Author: M.k. Rai
Publisher: CRC Press
ISBN: 104028695X
Category : Science
Languages : en
Pages : 612
Book Description
An important overview of the state of the art in naturally occurring antimycotics!Here is a comprehensive and innovative examination of the antimycotic potential of essential plant oils and extracts against fungal infections affecting humans, animals, plants, and foodstuffs. Plant-Derived Antimycotics emphasizes the antimycotic activity of plants found in Central America, India, Nepal, Fiji, and China--areas rich in phyto-diversity and traditional botanical/medical knowledge.From editor M.K. Rai: “Since the inception of human civilization men have been using herbs against various mycotic infections. In the recent past, several antimycotic agents have been introduced into the market due to their rapid curative properties. Still, the quest for new antifungal agents of a fungicidal rather than fungistatic nature continues. Furthermore, there has been a dramatic increase in the new spectrum of fungal infections known as opportunistic fungal pathogens. Consequently, plant-derived antimycotics are gaining importance, being natural, cheaper, safer, eco-friendly, and within the reach of the common man.”With a distinguished list of contributors from around the world, Plant-Derived Antimycotics explores: antifungal compounds that strengthen plant-defense systems traditional herbs that have revealed their antifungal properties newer, faster methods of screening and evaluating antifungal drugs natural antimycotics derived from plants in Croatia, South America, South Africa, China, India, and Fiji the mechanism of herbal antimycotic action the diversity of antimycotic efficacy in Asteraceous and Meliaceous plants new bioactive antifungal molecules Plant-Derived Antimycotics is an essential reference for pharmacologists, microbiologists, clinical mycologists, oncologists, immunologists, drug manufacturers, botanists and ethnobotanists, phytochemists, herbalists, and everyone searching for a natural remedy for the new spectrum of opportunistic fungal infections generated by the immunocompromising difficulties encountered by AIDS and cancer patients. Color illustrations, photographs, charts, tables, and graphs make the information easier to absorb and understand.
Plant-Derived Antimycotics
Author: M.k. Rai
Publisher: CRC Press
ISBN: 104028695X
Category : Science
Languages : en
Pages : 612
Book Description
An important overview of the state of the art in naturally occurring antimycotics!Here is a comprehensive and innovative examination of the antimycotic potential of essential plant oils and extracts against fungal infections affecting humans, animals, plants, and foodstuffs. Plant-Derived Antimycotics emphasizes the antimycotic activity of plants found in Central America, India, Nepal, Fiji, and China--areas rich in phyto-diversity and traditional botanical/medical knowledge.From editor M.K. Rai: “Since the inception of human civilization men have been using herbs against various mycotic infections. In the recent past, several antimycotic agents have been introduced into the market due to their rapid curative properties. Still, the quest for new antifungal agents of a fungicidal rather than fungistatic nature continues. Furthermore, there has been a dramatic increase in the new spectrum of fungal infections known as opportunistic fungal pathogens. Consequently, plant-derived antimycotics are gaining importance, being natural, cheaper, safer, eco-friendly, and within the reach of the common man.”With a distinguished list of contributors from around the world, Plant-Derived Antimycotics explores: antifungal compounds that strengthen plant-defense systems traditional herbs that have revealed their antifungal properties newer, faster methods of screening and evaluating antifungal drugs natural antimycotics derived from plants in Croatia, South America, South Africa, China, India, and Fiji the mechanism of herbal antimycotic action the diversity of antimycotic efficacy in Asteraceous and Meliaceous plants new bioactive antifungal molecules Plant-Derived Antimycotics is an essential reference for pharmacologists, microbiologists, clinical mycologists, oncologists, immunologists, drug manufacturers, botanists and ethnobotanists, phytochemists, herbalists, and everyone searching for a natural remedy for the new spectrum of opportunistic fungal infections generated by the immunocompromising difficulties encountered by AIDS and cancer patients. Color illustrations, photographs, charts, tables, and graphs make the information easier to absorb and understand.
Publisher: CRC Press
ISBN: 104028695X
Category : Science
Languages : en
Pages : 612
Book Description
An important overview of the state of the art in naturally occurring antimycotics!Here is a comprehensive and innovative examination of the antimycotic potential of essential plant oils and extracts against fungal infections affecting humans, animals, plants, and foodstuffs. Plant-Derived Antimycotics emphasizes the antimycotic activity of plants found in Central America, India, Nepal, Fiji, and China--areas rich in phyto-diversity and traditional botanical/medical knowledge.From editor M.K. Rai: “Since the inception of human civilization men have been using herbs against various mycotic infections. In the recent past, several antimycotic agents have been introduced into the market due to their rapid curative properties. Still, the quest for new antifungal agents of a fungicidal rather than fungistatic nature continues. Furthermore, there has been a dramatic increase in the new spectrum of fungal infections known as opportunistic fungal pathogens. Consequently, plant-derived antimycotics are gaining importance, being natural, cheaper, safer, eco-friendly, and within the reach of the common man.”With a distinguished list of contributors from around the world, Plant-Derived Antimycotics explores: antifungal compounds that strengthen plant-defense systems traditional herbs that have revealed their antifungal properties newer, faster methods of screening and evaluating antifungal drugs natural antimycotics derived from plants in Croatia, South America, South Africa, China, India, and Fiji the mechanism of herbal antimycotic action the diversity of antimycotic efficacy in Asteraceous and Meliaceous plants new bioactive antifungal molecules Plant-Derived Antimycotics is an essential reference for pharmacologists, microbiologists, clinical mycologists, oncologists, immunologists, drug manufacturers, botanists and ethnobotanists, phytochemists, herbalists, and everyone searching for a natural remedy for the new spectrum of opportunistic fungal infections generated by the immunocompromising difficulties encountered by AIDS and cancer patients. Color illustrations, photographs, charts, tables, and graphs make the information easier to absorb and understand.
Antifungal Metabolites from Plants
Author: Mehdi Razzaghi-Abyaneh
Publisher: Springer Science & Business Media
ISBN: 364238076X
Category : Science
Languages : en
Pages : 453
Book Description
The goal of this book is to provide essential information on the use of different medicinal plants and their secondary metabolites for the treatment of various fungal diseases affecting human beings, animals and plants. It is divided in four parts: Part I examines the global distribution of plant-derived antifungal compounds, Part II deals with antifungal activities of plant metabolites, Part III includes plants used in Ayurveda and traditional systems for treating fungal diseases, and Part IV discusses the use of plant-derived products to protect plants against fungal diseases.
Publisher: Springer Science & Business Media
ISBN: 364238076X
Category : Science
Languages : en
Pages : 453
Book Description
The goal of this book is to provide essential information on the use of different medicinal plants and their secondary metabolites for the treatment of various fungal diseases affecting human beings, animals and plants. It is divided in four parts: Part I examines the global distribution of plant-derived antifungal compounds, Part II deals with antifungal activities of plant metabolites, Part III includes plants used in Ayurveda and traditional systems for treating fungal diseases, and Part IV discusses the use of plant-derived products to protect plants against fungal diseases.
Medicinal Plants
Author: Bassam Hassan
Publisher: BoD – Books on Demand
ISBN: 1789858879
Category : Medical
Languages : en
Pages : 194
Book Description
This book is focused on clarifying the anticancer effects (i.e., apoptotic, antiproliferative, antimetastatic, antiangiogenic) and mechanisms of most of the medicinal plants found in the world against solid and/or hematological cancers.
Publisher: BoD – Books on Demand
ISBN: 1789858879
Category : Medical
Languages : en
Pages : 194
Book Description
This book is focused on clarifying the anticancer effects (i.e., apoptotic, antiproliferative, antimetastatic, antiangiogenic) and mechanisms of most of the medicinal plants found in the world against solid and/or hematological cancers.
Recent Trends in Antifungal Agents and Antifungal Therapy
Author: Amit Basak
Publisher: Springer
ISBN: 8132227824
Category : Science
Languages : en
Pages : 254
Book Description
Fungal infections have taken a new spectrum due to the increased incidence of multi-drug resistant fungal pathogens. Freedom of choice for drugs to treat fungal infections is also narrow because of lesser probability of discovering drugs that would bypass affecting human cells and target fungal cells producing fewer side effects in patients. An approach has gained prominence in research is to look for bioactive antifungal compounds from natural to synthetic sources. It is necessary to discover new classes of antifungals to control the recent emergence of multi-drug resistant fungal infections. This book proposed a details top to bottom outline of antifungal compounds derived naturally or synthetically. The details of their modifications or synthetic analogues have been described, helpful to understand the structure-activity relationship which leads to new compound development in antifungal chemotherapy. Each chapter begins with a comprehensive, top-bottom in-depth discussion of antifungal agents with updated bibliographic references. This compendium will serve as a companion not only for Scientists, Researchers, and Professors, Medical Practitioners but also a valuable reference text for the university students.
Publisher: Springer
ISBN: 8132227824
Category : Science
Languages : en
Pages : 254
Book Description
Fungal infections have taken a new spectrum due to the increased incidence of multi-drug resistant fungal pathogens. Freedom of choice for drugs to treat fungal infections is also narrow because of lesser probability of discovering drugs that would bypass affecting human cells and target fungal cells producing fewer side effects in patients. An approach has gained prominence in research is to look for bioactive antifungal compounds from natural to synthetic sources. It is necessary to discover new classes of antifungals to control the recent emergence of multi-drug resistant fungal infections. This book proposed a details top to bottom outline of antifungal compounds derived naturally or synthetically. The details of their modifications or synthetic analogues have been described, helpful to understand the structure-activity relationship which leads to new compound development in antifungal chemotherapy. Each chapter begins with a comprehensive, top-bottom in-depth discussion of antifungal agents with updated bibliographic references. This compendium will serve as a companion not only for Scientists, Researchers, and Professors, Medical Practitioners but also a valuable reference text for the university students.
Plant-Derived Antimycotics
Author: M.k. Rai
Publisher: CRC Press
ISBN: 9781560229278
Category : Science
Languages : en
Pages : 622
Book Description
An important overview of the state of the art in naturally occurring antimycotics! Here is a comprehensive and innovative examination of the antimycotic potential of essential plant oils and extracts against fungal infections affecting humans, animals, plants, and foodstuffs. Plant-Derived Antimycotics emphasizes the antimycotic activity of plants found in Central America, India, Nepal, Fiji, and China--areas rich in phyto-diversity and traditional botanical/medical knowledge. From editor M.K. Rai: “Since the inception of human civilization men have been using herbs against various mycotic infections. In the recent past, several antimycotic agents have been introduced into the market due to their rapid curative properties. Still, the quest for new antifungal agents of a fungicidal rather than fungistatic nature continues. Furthermore, there has been a dramatic increase in the new spectrum of fungal infections known as opportunistic fungal pathogens. Consequently, plant-derived antimycotics are gaining importance, being natural, cheaper, safer, eco-friendly, and within the reach of the common man.” With a distinguished list of contributors from around the world, Plant-Derived Antimycotics explores: antifungal compounds that strengthen plant-defense systems traditional herbs that have revealed their antifungal properties newer, faster methods of screening and evaluating antifungal drugs natural antimycotics derived from plants in Croatia, South America, South Africa, China, India, and Fiji the mechanism of herbal antimycotic action the diversity of antimycotic efficacy in Asteraceous and Meliaceous plants new bioactive antifungal molecules Plant-Derived Antimycotics is an essential reference for pharmacologists, microbiologists, clinical mycologists, oncologists, immunologists, drug manufacturers, botanists and ethnobotanists, phytochemists, herbalists, and everyone searching for a natural remedy for the new spectrum of opportunistic fungal infections generated by the immunocompromising difficulties encountered by AIDS and cancer patients. Color illustrations, photographs, charts, tables, and graphs make the information easier to absorb and understand.
Publisher: CRC Press
ISBN: 9781560229278
Category : Science
Languages : en
Pages : 622
Book Description
An important overview of the state of the art in naturally occurring antimycotics! Here is a comprehensive and innovative examination of the antimycotic potential of essential plant oils and extracts against fungal infections affecting humans, animals, plants, and foodstuffs. Plant-Derived Antimycotics emphasizes the antimycotic activity of plants found in Central America, India, Nepal, Fiji, and China--areas rich in phyto-diversity and traditional botanical/medical knowledge. From editor M.K. Rai: “Since the inception of human civilization men have been using herbs against various mycotic infections. In the recent past, several antimycotic agents have been introduced into the market due to their rapid curative properties. Still, the quest for new antifungal agents of a fungicidal rather than fungistatic nature continues. Furthermore, there has been a dramatic increase in the new spectrum of fungal infections known as opportunistic fungal pathogens. Consequently, plant-derived antimycotics are gaining importance, being natural, cheaper, safer, eco-friendly, and within the reach of the common man.” With a distinguished list of contributors from around the world, Plant-Derived Antimycotics explores: antifungal compounds that strengthen plant-defense systems traditional herbs that have revealed their antifungal properties newer, faster methods of screening and evaluating antifungal drugs natural antimycotics derived from plants in Croatia, South America, South Africa, China, India, and Fiji the mechanism of herbal antimycotic action the diversity of antimycotic efficacy in Asteraceous and Meliaceous plants new bioactive antifungal molecules Plant-Derived Antimycotics is an essential reference for pharmacologists, microbiologists, clinical mycologists, oncologists, immunologists, drug manufacturers, botanists and ethnobotanists, phytochemists, herbalists, and everyone searching for a natural remedy for the new spectrum of opportunistic fungal infections generated by the immunocompromising difficulties encountered by AIDS and cancer patients. Color illustrations, photographs, charts, tables, and graphs make the information easier to absorb and understand.
Combating Fungal Infections
Author: Iqbal Ahmad
Publisher: Springer Science & Business Media
ISBN: 364212173X
Category : Medical
Languages : en
Pages : 549
Book Description
Fungi are eukaryotic microorganisms that are closely related to humans at cellular level. Human fungal pathogens belong to various classes of fungi, mainly zygo- cetes, ascomycetes, basidiomycetes, and deuteromycetes. In recent years, fungal infections have dramatically increased as a result of improved diagnosis, high frequency of catheterization, instrumentation, etc. However, the main cause remains the increasing number of immunosuppressed patients, mostly because of HIV infection and indiscriminate usage of antineoplastic and immunosuppressive agents, broad-spectrum antibiotics and prosthetic devices, and grafts in clinical settings. Presently available means of combating fungal infections are still weak and clumsy compared to control of bacterial infection. The present scenario of antifungal therapy is still based on two classes of antifungal drugs (polyenes and azoles). These drugs are effective in many cases, but display toxicity and limited spectrum of ef?cacy. The recent trend towards emergence of drug-resistant isolates in the clinic is an additional problem. In recent years, a few new antifungal drugs have entered the clinics, but they are expected to undergo same fate as the older antifungal drugs. The application of fungal genomics offers an unparalleled opportunity to develop novel antifungal drugs. However, it is too early to expect any novel drugs, as the antifungal drug discovery program is in the stage of infancy. Interestingly, several novel antifungal drug targets have been identi?ed and validated.
Publisher: Springer Science & Business Media
ISBN: 364212173X
Category : Medical
Languages : en
Pages : 549
Book Description
Fungi are eukaryotic microorganisms that are closely related to humans at cellular level. Human fungal pathogens belong to various classes of fungi, mainly zygo- cetes, ascomycetes, basidiomycetes, and deuteromycetes. In recent years, fungal infections have dramatically increased as a result of improved diagnosis, high frequency of catheterization, instrumentation, etc. However, the main cause remains the increasing number of immunosuppressed patients, mostly because of HIV infection and indiscriminate usage of antineoplastic and immunosuppressive agents, broad-spectrum antibiotics and prosthetic devices, and grafts in clinical settings. Presently available means of combating fungal infections are still weak and clumsy compared to control of bacterial infection. The present scenario of antifungal therapy is still based on two classes of antifungal drugs (polyenes and azoles). These drugs are effective in many cases, but display toxicity and limited spectrum of ef?cacy. The recent trend towards emergence of drug-resistant isolates in the clinic is an additional problem. In recent years, a few new antifungal drugs have entered the clinics, but they are expected to undergo same fate as the older antifungal drugs. The application of fungal genomics offers an unparalleled opportunity to develop novel antifungal drugs. However, it is too early to expect any novel drugs, as the antifungal drug discovery program is in the stage of infancy. Interestingly, several novel antifungal drug targets have been identi?ed and validated.
Volatiles and Food Security
Author: Devendra K. Choudhary
Publisher: Springer
ISBN: 981105553X
Category : Science
Languages : en
Pages : 380
Book Description
This book presents research on volatiles produced by microbes and plants along with their biotechnological implications for sustainable agriculture. A greater understanding of how plants and microbes live together and benefit each other can provide new strategies to improve plant productivity, while at the same time helping to protect the environment and maintain global biodiversity. To date, the use of chemicals to enhance plant growth or induced resistance in plants has been limited due to the negative effects and the difficulty in determining the optimal concentrations to benefit the plant. The book discusses extensive studies on biological alternatives that avoid these problems, and the research presented suggests that these compounds could offer an environmentally sound means to better grow and protect plants under greenhouse or field conditions. To understand the nature of VOCs and gene expression profiling of plant genes responding against these compounds can be conducted. It is possible that VOCs produced by microbes while colonizing roots are generated at sufficient concentrations to trigger plant responses. In conclusion, positive or negative effects of VOCs on plant productivity will be dependent on upon specific VOCs microbial strain, plant genotype, and presence/absence of abiotic/biotic stresses
Publisher: Springer
ISBN: 981105553X
Category : Science
Languages : en
Pages : 380
Book Description
This book presents research on volatiles produced by microbes and plants along with their biotechnological implications for sustainable agriculture. A greater understanding of how plants and microbes live together and benefit each other can provide new strategies to improve plant productivity, while at the same time helping to protect the environment and maintain global biodiversity. To date, the use of chemicals to enhance plant growth or induced resistance in plants has been limited due to the negative effects and the difficulty in determining the optimal concentrations to benefit the plant. The book discusses extensive studies on biological alternatives that avoid these problems, and the research presented suggests that these compounds could offer an environmentally sound means to better grow and protect plants under greenhouse or field conditions. To understand the nature of VOCs and gene expression profiling of plant genes responding against these compounds can be conducted. It is possible that VOCs produced by microbes while colonizing roots are generated at sufficient concentrations to trigger plant responses. In conclusion, positive or negative effects of VOCs on plant productivity will be dependent on upon specific VOCs microbial strain, plant genotype, and presence/absence of abiotic/biotic stresses
Medicinal and Aromatic Plants
Author: Tariq Aftab
Publisher: Springer Nature
ISBN: 3030589757
Category : Science
Languages : en
Pages : 781
Book Description
Before the concept of history began, humans undoubtedly acquired life benefits by discovering medicinal and aromatic plants (MAPs) that were food and medicine. Today, a variety of available herbs and spices are used and enjoyed throughout the world and continue to promote good health. The international market is also quite welcoming for MAPs and essential oils. The increasing environment and nature conscious buyers encourage producers to produce high quality essential oils. These consumer choices lead to growing preference for organic and herbal based products in the world market. As the benefits of medicinal and aromatic plants are recognized, these plants will have a special role for humans in the future. Until last century, the production of botanicals relies to a large degree on wild-collection. However, the increasing commercial collection, largely unmonitored trade, and habitat loss lead to an incomparably growing pressure on plant populations in the wild. Therefore, medicinal and aromatic plants are of high priority for conservation. Given the above, we bring forth a comprehensive volume, “Medicinal and Aromatic Plants: Healthcare and Industrial Applications”, highlighting the various healthcare, industrial and pharmaceutical applications that are being used on these immensely important MAPs and its future prospects. This collection of chapters from the different areas dealing with MAPs caters to the need of all those who are working or have interest in the above topic.
Publisher: Springer Nature
ISBN: 3030589757
Category : Science
Languages : en
Pages : 781
Book Description
Before the concept of history began, humans undoubtedly acquired life benefits by discovering medicinal and aromatic plants (MAPs) that were food and medicine. Today, a variety of available herbs and spices are used and enjoyed throughout the world and continue to promote good health. The international market is also quite welcoming for MAPs and essential oils. The increasing environment and nature conscious buyers encourage producers to produce high quality essential oils. These consumer choices lead to growing preference for organic and herbal based products in the world market. As the benefits of medicinal and aromatic plants are recognized, these plants will have a special role for humans in the future. Until last century, the production of botanicals relies to a large degree on wild-collection. However, the increasing commercial collection, largely unmonitored trade, and habitat loss lead to an incomparably growing pressure on plant populations in the wild. Therefore, medicinal and aromatic plants are of high priority for conservation. Given the above, we bring forth a comprehensive volume, “Medicinal and Aromatic Plants: Healthcare and Industrial Applications”, highlighting the various healthcare, industrial and pharmaceutical applications that are being used on these immensely important MAPs and its future prospects. This collection of chapters from the different areas dealing with MAPs caters to the need of all those who are working or have interest in the above topic.
Novel Plant Bioresources
Author: Ameenah Gurib-Fakim
Publisher: John Wiley & Sons
ISBN: 1118460588
Category : Technology & Engineering
Languages : en
Pages : 1141
Book Description
Novel Plant Bioresources: Applications in Food, Medicine and Cosmetics serves as the definitive source of information on under-utilized plant species, and fills a key niche in our understanding of the relationship of human beings with under-utilized plants. By covering applications in food, medicine and cosmetics, the book has a broad appeal. In a climate of growing awareness about the perils of biodiversity loss, the world is witnessing an unprecedented interest in novel plants, which are increasingly prized for their potential use in aromas, dyes, foods, medicines and cosmetics. This book highlights these plants and their uses. After an introductory section which sets the scene with an overview of the historical and legislative importance of under-utilized plants, the main four parts of the book are dedicated to the diverse potential application of novel plant bioresources in Food, Medicine, Ethnoveterinary Medicine and Cosmetics. Examples and contributors are drawn from Africa, Europe, the USA and Asia. The economic, social, and cultural aspects of under-utilized plant species are addressed, and the book provides a much needed boost to the on-going effort to focus attention on under-utilized plant species and conservation initiatives. By focusing on novel plants and the agenda for sustainable utilization, Novel Plant Bioresources highlights key issues relevant to under-utilized plant genetic resources, and brings together international scholars on this important topic.
Publisher: John Wiley & Sons
ISBN: 1118460588
Category : Technology & Engineering
Languages : en
Pages : 1141
Book Description
Novel Plant Bioresources: Applications in Food, Medicine and Cosmetics serves as the definitive source of information on under-utilized plant species, and fills a key niche in our understanding of the relationship of human beings with under-utilized plants. By covering applications in food, medicine and cosmetics, the book has a broad appeal. In a climate of growing awareness about the perils of biodiversity loss, the world is witnessing an unprecedented interest in novel plants, which are increasingly prized for their potential use in aromas, dyes, foods, medicines and cosmetics. This book highlights these plants and their uses. After an introductory section which sets the scene with an overview of the historical and legislative importance of under-utilized plants, the main four parts of the book are dedicated to the diverse potential application of novel plant bioresources in Food, Medicine, Ethnoveterinary Medicine and Cosmetics. Examples and contributors are drawn from Africa, Europe, the USA and Asia. The economic, social, and cultural aspects of under-utilized plant species are addressed, and the book provides a much needed boost to the on-going effort to focus attention on under-utilized plant species and conservation initiatives. By focusing on novel plants and the agenda for sustainable utilization, Novel Plant Bioresources highlights key issues relevant to under-utilized plant genetic resources, and brings together international scholars on this important topic.
Fungi
Author: Kevin Kavanagh
Publisher: John Wiley & Sons
ISBN: 111997769X
Category : Science
Languages : en
Pages : 315
Book Description
Fungi: Biology and Applications, Second Edition provides a comprehensive treatment of fungi, covering biochemistry, genetics and the medical and economic significance of these organisms at introductory level. With no prior knowledge of the subject assumed, the opening chapters offer a broad overview of the basics of fungal biology, in particular the physiology and genetics of fungi and also a new chapter on the application of genomics to fungi. Later chapters move on to include more detailed coverage of topics such as antibiotic and chemical commodities from fungi, new chapters on biotechnological use of fungal enzymes and fungal proteomics, and fungal diseases of humans, antifungal agents for use in human therapy and fungal pathogens of plants.
Publisher: John Wiley & Sons
ISBN: 111997769X
Category : Science
Languages : en
Pages : 315
Book Description
Fungi: Biology and Applications, Second Edition provides a comprehensive treatment of fungi, covering biochemistry, genetics and the medical and economic significance of these organisms at introductory level. With no prior knowledge of the subject assumed, the opening chapters offer a broad overview of the basics of fungal biology, in particular the physiology and genetics of fungi and also a new chapter on the application of genomics to fungi. Later chapters move on to include more detailed coverage of topics such as antibiotic and chemical commodities from fungi, new chapters on biotechnological use of fungal enzymes and fungal proteomics, and fungal diseases of humans, antifungal agents for use in human therapy and fungal pathogens of plants.