Author: Nunun Barunawati
Publisher: Cuvillier Verlag
ISBN: 3736942664
Category : Science
Languages : en
Pages : 115
Book Description
Die Mikronährstoffe Fe und Zn werden von Samen für die Entwicklung des Keimlings benötigt. Getreidekörner besitzen geringe Fe und Zn Gehalte und sind deshalb eine schlechte Quelle dieser Mikronährstoffe für die menschliche Ernährung.Um eine Anreicherung von Mikronährstoffen in Getreidekörnern zu erreichen, müssen jene aufgenommen, von der Wurzel zu Blättern oder Stängeln transloziert und von seneszenten Blättern oder Stängeln in die sich entwickelnden Körner retransloziert werden. Es ist bekannt, dass Stickstoffernährung eine wichtige Rolle bei der Retranslokation von Mikronährstoffen spielt, da die Anregung der Synthese von N-haltigen Fe Chelatoren wie Nikotianamin und Phytosiderophoren zu einer erleichterten Langstreckentranslokation dieser Metalle führen kann. Andererseits könnte eine N Düngung auch entgegengerichtet wirken, da dadurch Seneszenz verzögert wird und Mikronährstoffe in vegetativen Organen festgehalten werden. Bisher wurden die meisten Studien zu Mirkronährstoffretranslokation während der Blattseneszenz in hydroponischer Kultur oder in Topfexperimenten durchgeführt. Die hier vorliegende Arbeit untersuchte deshalb den Effekt unterschiedlicher N Düngungsformen auf Blattseneszenz und Mikronährstoffanreicherung in Weizenkörnern (Triticum aestivum cv. Akteur) unter Feldbedingungen in zwei aufeinanderfolgenden Jahren. Es wurde beobachtet, dass die Seneszenz des Fahnenblattes durch N Düngung verzögert war und zwar besonders dann, wenn N in Form von Nitrat oder Ammonium angeboten wurde, wohingegen Harnstoff weniger effektvoll war. In beiden Feldexperimenten führte die Zugabe von Ammonium nach der Blüte zu einem erhöhten Fe und Zn Gehalt in den Körnern. Dies lässt darauf schließen, dass diese Behandlung eine vielversprechende Strategie zur verbesserten Anreicherung dieser Mikronährstoffen in Weizenkörnern darstellt. Die Stickstoffversorgung führte auch zu erhöhten Nikotianamingehalten in Blättern und Blattexudaten, wohingegen die Phytosiderophorkonzentrationen weit weniger von den N Behandlungen beeinflusst waren. In einem Versuch die Fe und Zn Mobilisierung zu verbessern wurde Zitrat auf seneszierende Blätter von Freilandweizen gesprüht und die Mikronährstoffanreicherung in den Körnern gemessen. In N-gedüngten Pflanzen erhöhte die Zitratapplikation die Zitratexudation von seneszierenden Blättern nicht und die Fe und Zn Anreicherung in Körnern blieb unverändert. In ungedüngten Pflanzen hingegen erhöhte die Zitratapplikation die Zitratgehalte in den Exudaten seneszenter Blätter und führte zu signifikant erhöhten Fe Gehalten in den Körnern. In diesem Fall ist der positive Effekt der Zitratapplikation höchstwahrscheinlich auf eine verbesserte Fe Solubilisierung durch Zitrat in den Fahnenblättern zurück zu führen, da diese Behandlung keinen Effekt auf die Nikotianamin- und Phytosiderophorgehalte hatte. Die Ergebnisse dieser Arbeit zeigen, dass N Düngung die Fe und Zn Anreicherung von Weizenkörnern verbessern kann und zwar besonders dann, wenn die unterschiedlichen Effekte der N Düngerform berücksichtigt werden, während die Zitratapplikation zu keiner erhöhten Fe und Zn Anreicherung in den Körnern geführt hat.
Iron Nutrition in Soils and Plants
Author: Javier Abadía
Publisher: Springer Science & Business Media
ISBN: 9401105030
Category : Science
Languages : en
Pages : 389
Book Description
Iron is a major constituent of the earth crust. However, under alkaline conditions commonly found in arid and semi-arid environments iron becomes unavailable to plants. When plants are affected by a shortage of iron their leaves become yellow (chlorotic), and both plant growth and crop yield are reduced. The roots of plants affected by iron deficiency may develop a series of responses directed to improve iron uptake, such as increased proton excretion and iron reduction capabilities or excretion of iron chela tors called siderophores. Iron deficiency affects major crops worldwide, including some of major economic importance such as fruit trees and others. Correction of iron deficiency is usually implemented through costly application of synthetic chelates. Since these correction methods are very expensive, the competitivity of farmers is often reduced and iron deficiency may become a limiting factor for the maintenance, introduction or expansion of some crops. In spite of the many years devoted to the study of iron deficiency, the knowledge of iron deficiency in soils and plants is still fragmentary in many aspects. We have only incomplete information on the processes at the molecular level that make some plant species and cultivars unable to take and utilize iron from the soil, whereas other plants grow satisfactorily under the same conditions.
Publisher: Springer Science & Business Media
ISBN: 9401105030
Category : Science
Languages : en
Pages : 389
Book Description
Iron is a major constituent of the earth crust. However, under alkaline conditions commonly found in arid and semi-arid environments iron becomes unavailable to plants. When plants are affected by a shortage of iron their leaves become yellow (chlorotic), and both plant growth and crop yield are reduced. The roots of plants affected by iron deficiency may develop a series of responses directed to improve iron uptake, such as increased proton excretion and iron reduction capabilities or excretion of iron chela tors called siderophores. Iron deficiency affects major crops worldwide, including some of major economic importance such as fruit trees and others. Correction of iron deficiency is usually implemented through costly application of synthetic chelates. Since these correction methods are very expensive, the competitivity of farmers is often reduced and iron deficiency may become a limiting factor for the maintenance, introduction or expansion of some crops. In spite of the many years devoted to the study of iron deficiency, the knowledge of iron deficiency in soils and plants is still fragmentary in many aspects. We have only incomplete information on the processes at the molecular level that make some plant species and cultivars unable to take and utilize iron from the soil, whereas other plants grow satisfactorily under the same conditions.
Leaves of Iron
Author: Philip Drew
Publisher: HarperCollins Publishers
ISBN: 9780207173271
Category : Architecture
Languages : en
Pages : 148
Book Description
First published by the Law Book Company in 1985, this book chronicles the life and work of Glen Murcutt, a renowned Australian architect who contributed to the development of a distinctive Australian style. His veranda-house combined a lyrical sense of landscape with a practical design based on climatic considerations. The author has written several other books on local and international architecture.
Publisher: HarperCollins Publishers
ISBN: 9780207173271
Category : Architecture
Languages : en
Pages : 148
Book Description
First published by the Law Book Company in 1985, this book chronicles the life and work of Glen Murcutt, a renowned Australian architect who contributed to the development of a distinctive Australian style. His veranda-house combined a lyrical sense of landscape with a practical design based on climatic considerations. The author has written several other books on local and international architecture.
Iron Nutrition and Interactions in Plants, 2nd Edition
Author: Thomas J. Buckhout
Publisher: Frontiers Media SA
ISBN: 2889639703
Category :
Languages : en
Pages : 344
Book Description
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Publisher: Frontiers Media SA
ISBN: 2889639703
Category :
Languages : en
Pages : 344
Book Description
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Journal of Agricultural Research
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 682
Book Description
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 682
Book Description
Advances in Plant Sulfur Research
Author: Dimitris L. Bouranis
Publisher: MDPI
ISBN: 303936006X
Category : Science
Languages : en
Pages : 176
Book Description
As an essential nutrient for plant growth and development, sulfur (S) deficiency in productive systems limits yield and quality. This Special Issue hosts a collection of original research articles, focusing on the following topics: (1) The germinative and post-germinative behavior of Brassica napus seeds when severe S limitation is applied to the parent plants; (2) the independence of S-deficiency from the mRNA degradation initiation enzyme PARN in Arabidopsis; (3) the glucosinolate distribution in the aerial parts of sel1-10, a disruption mutant of the sulfate transporter SULTR1;2, in mature Arabidopsis thaliana plants; (4) the accumulation of S-methylcysteine as its γ-glutamyl dipeptide in Phaseolus vulgaris; and (5) the role of ferric iron chelation-strategy components in the leaves and roots of maize, have provided new insights into the effect of S availability on plant functionality. Moreover, the role of S deficiency in root system functionality has been highlighted, focusing on (6) the contribution of root hair development to sulfate uptake in Arabidopsis, and (7) the modulation of lateral root development by the CLE-CLAVATA1 signaling pathway under S deficiency. The role of S in plants grown under drought conditions has been investigated in more detail focusing (8) on the relationship between S-induced stomata closure and the canonical ABA signal transduction machinery. Furthermore, (9) the assessment of S deficiency under field conditions by single measurements of sulfur, chloride, and phosphorus in mature leaves, (10) the effect of fertilizers enriched with elemental S on durum wheat yield, and (11, 12) the impact of elemental S on the rhizospheric bacteria of durum wheat contributed to enhancing the scientific knowledge of S nutrition under field conditions.
Publisher: MDPI
ISBN: 303936006X
Category : Science
Languages : en
Pages : 176
Book Description
As an essential nutrient for plant growth and development, sulfur (S) deficiency in productive systems limits yield and quality. This Special Issue hosts a collection of original research articles, focusing on the following topics: (1) The germinative and post-germinative behavior of Brassica napus seeds when severe S limitation is applied to the parent plants; (2) the independence of S-deficiency from the mRNA degradation initiation enzyme PARN in Arabidopsis; (3) the glucosinolate distribution in the aerial parts of sel1-10, a disruption mutant of the sulfate transporter SULTR1;2, in mature Arabidopsis thaliana plants; (4) the accumulation of S-methylcysteine as its γ-glutamyl dipeptide in Phaseolus vulgaris; and (5) the role of ferric iron chelation-strategy components in the leaves and roots of maize, have provided new insights into the effect of S availability on plant functionality. Moreover, the role of S deficiency in root system functionality has been highlighted, focusing on (6) the contribution of root hair development to sulfate uptake in Arabidopsis, and (7) the modulation of lateral root development by the CLE-CLAVATA1 signaling pathway under S deficiency. The role of S in plants grown under drought conditions has been investigated in more detail focusing (8) on the relationship between S-induced stomata closure and the canonical ABA signal transduction machinery. Furthermore, (9) the assessment of S deficiency under field conditions by single measurements of sulfur, chloride, and phosphorus in mature leaves, (10) the effect of fertilizers enriched with elemental S on durum wheat yield, and (11, 12) the impact of elemental S on the rhizospheric bacteria of durum wheat contributed to enhancing the scientific knowledge of S nutrition under field conditions.
Plant Nutrition - Physiology and Applications
Author: M.L. Van Beusichem
Publisher: Springer Science & Business Media
ISBN: 9400905858
Category : Science
Languages : en
Pages : 759
Book Description
Exactly 35 years after the first Colloquium was held, the Eleventh International Plant Nutrition Colloquium took place from 30 July to 4 August 1989 in Wageningen, The Netherlands. Although impressive progress has been made during the past decades in our understanding of the mechanisms of uptake, distribution and assimilation of nutrients in relation to crop yield and quality, there are still significant gaps in our insight into many fundamental aspects of plant mineral nutrition and related metabolic processes. In spite of improved knowledge of nutrient requirements of crops and improved fertilizer application strategies, the world population remains to be burdened with an enormous shortage of plant products for food, timber, fuel, shelter, and other purposes. The main challenge facing the plant nutrition research community is to at least alleviate the increasing world-wide need for applying scientific knowledge to practical problems in agriculture, horticulture, and forestry. It is therefore felt by many scientists that the Plant Nutrition Colloquia, which are intended to bring together scientists and to integrate knowledge and approaches acquired in plant physiology, biochemis try, soil science, agronomy and related disciplines, have indeed made a significant contribution to the advancement of our knowledge and understanding in this vital and interdisciplinary field of agrobiology. About 260 scientists from 40 nations attended the Colloquium in Wageningen.
Publisher: Springer Science & Business Media
ISBN: 9400905858
Category : Science
Languages : en
Pages : 759
Book Description
Exactly 35 years after the first Colloquium was held, the Eleventh International Plant Nutrition Colloquium took place from 30 July to 4 August 1989 in Wageningen, The Netherlands. Although impressive progress has been made during the past decades in our understanding of the mechanisms of uptake, distribution and assimilation of nutrients in relation to crop yield and quality, there are still significant gaps in our insight into many fundamental aspects of plant mineral nutrition and related metabolic processes. In spite of improved knowledge of nutrient requirements of crops and improved fertilizer application strategies, the world population remains to be burdened with an enormous shortage of plant products for food, timber, fuel, shelter, and other purposes. The main challenge facing the plant nutrition research community is to at least alleviate the increasing world-wide need for applying scientific knowledge to practical problems in agriculture, horticulture, and forestry. It is therefore felt by many scientists that the Plant Nutrition Colloquia, which are intended to bring together scientists and to integrate knowledge and approaches acquired in plant physiology, biochemis try, soil science, agronomy and related disciplines, have indeed made a significant contribution to the advancement of our knowledge and understanding in this vital and interdisciplinary field of agrobiology. About 260 scientists from 40 nations attended the Colloquium in Wageningen.
Plant Performance Under Environmental Stress
Author: Azamal Husen
Publisher: Springer Nature
ISBN: 3030785211
Category : Science
Languages : en
Pages : 604
Book Description
Global climate change is bound to create a number of abiotic and biotic stresses in the environment, which would affect the overall growth and productivity of plants. Like other living beings, plants have the ability to protect themselves by evolving various mechanisms against stresses, despite being sessile in nature. They manage to withstand extremes of temperature, drought, flooding, salinity, heavy metals, atmospheric pollution, toxic chemicals and a variety of living organisms, especially viruses, bacteria, fungi, nematodes, insects and arachnids and weeds. Incidence of abiotic stresses may alter the plant-pest interactions by enhancing susceptibility of plants to pathogenic organisms. These interactions often change plant response to abiotic stresses. Plant growth regulators modulate plant responses to biotic and abiotic stresses, and regulate their growth and developmental cascades. A number of physiological and molecular processes that act together in a complex regulatory network, further manage these responses. Crosstalk between autophagy and hormones also occurs to develop tolerance in plants towards multiple abiotic stresses. Similarly, biostimulants, in combination with correct agronomic practices, have shown beneficial effects on plant metabolism due to the hormonal activity that stimulates different metabolic pathways. At the same time, they reduce the use of agrochemicals and impart tolerance to biotic and abiotic stress. Further, the use of bio- and nano-fertilizers seem to hold promise to improve the nutrient use efficiency and hence the plant yield under stressful environments. It has also been shown that the seed priming agents impart stress tolerance. Additionally, tolerance or resistance to stress may also be induced by using specific chemical compounds such as polyamines, proline, glycine betaine, hydrogen sulfide, silicon, β-aminobutyric acid, γ-aminobutyric acid and so on. This book discusses the advances in plant performance under stressful conditions. It should be very useful to graduate students, researchers, and scientists in the fields of botanical science, crop science, agriculture, horticulture, ecological and environmental science.
Publisher: Springer Nature
ISBN: 3030785211
Category : Science
Languages : en
Pages : 604
Book Description
Global climate change is bound to create a number of abiotic and biotic stresses in the environment, which would affect the overall growth and productivity of plants. Like other living beings, plants have the ability to protect themselves by evolving various mechanisms against stresses, despite being sessile in nature. They manage to withstand extremes of temperature, drought, flooding, salinity, heavy metals, atmospheric pollution, toxic chemicals and a variety of living organisms, especially viruses, bacteria, fungi, nematodes, insects and arachnids and weeds. Incidence of abiotic stresses may alter the plant-pest interactions by enhancing susceptibility of plants to pathogenic organisms. These interactions often change plant response to abiotic stresses. Plant growth regulators modulate plant responses to biotic and abiotic stresses, and regulate their growth and developmental cascades. A number of physiological and molecular processes that act together in a complex regulatory network, further manage these responses. Crosstalk between autophagy and hormones also occurs to develop tolerance in plants towards multiple abiotic stresses. Similarly, biostimulants, in combination with correct agronomic practices, have shown beneficial effects on plant metabolism due to the hormonal activity that stimulates different metabolic pathways. At the same time, they reduce the use of agrochemicals and impart tolerance to biotic and abiotic stress. Further, the use of bio- and nano-fertilizers seem to hold promise to improve the nutrient use efficiency and hence the plant yield under stressful environments. It has also been shown that the seed priming agents impart stress tolerance. Additionally, tolerance or resistance to stress may also be induced by using specific chemical compounds such as polyamines, proline, glycine betaine, hydrogen sulfide, silicon, β-aminobutyric acid, γ-aminobutyric acid and so on. This book discusses the advances in plant performance under stressful conditions. It should be very useful to graduate students, researchers, and scientists in the fields of botanical science, crop science, agriculture, horticulture, ecological and environmental science.
Iron
Author: Perry Fairfax Nursey
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 644
Book Description
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 644
Book Description
Iron Nutrition in Plants and Rhizospheric Microorganisms
Author: Larry L. Barton
Publisher: Springer Science & Business Media
ISBN: 9781402066238
Category : Medical
Languages : en
Pages : 500
Book Description
This book provides a comprehensive review on the status of iron nutrition in plants. It contains updated reviews of most relevant issues involving Fe in plants and combines research on molecular biology with physiological studies of plant-iron nutrition. It also covers molecular aspects of iron uptake and storage in Arabidopsis and transmembrane movement and translocation of iron in plants. This book should serve to stimulate continued exploration in the field.
Publisher: Springer Science & Business Media
ISBN: 9781402066238
Category : Medical
Languages : en
Pages : 500
Book Description
This book provides a comprehensive review on the status of iron nutrition in plants. It contains updated reviews of most relevant issues involving Fe in plants and combines research on molecular biology with physiological studies of plant-iron nutrition. It also covers molecular aspects of iron uptake and storage in Arabidopsis and transmembrane movement and translocation of iron in plants. This book should serve to stimulate continued exploration in the field.
Handbook of Plant Nutrition
Author: Allen V. Barker
Publisher: CRC Press
ISBN: 1420014870
Category : Science
Languages : en
Pages : 662
Book Description
The burgeoning demand on the world food supply, coupled with concern over the use of chemical fertilizers, has led to an accelerated interest in the practice of precision agriculture. This practice involves the careful control and monitoring of plant nutrition to maximize the rate of growth and yield of crops, as well as their nutritional value.
Publisher: CRC Press
ISBN: 1420014870
Category : Science
Languages : en
Pages : 662
Book Description
The burgeoning demand on the world food supply, coupled with concern over the use of chemical fertilizers, has led to an accelerated interest in the practice of precision agriculture. This practice involves the careful control and monitoring of plant nutrition to maximize the rate of growth and yield of crops, as well as their nutritional value.