Regulation of Gene Expression by Low Temperature in Lycopersicon Esculentum (tomato) PDF Download
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Author: Mark Alan Schaffer
Publisher:
ISBN:
Category :
Languages : en
Pages : 264
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Author: Mark Alan Schaffer
Publisher:
ISBN:
Category :
Languages : en
Pages : 264
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Author: James E. Lincoln
Publisher:
ISBN:
Category :
Languages : en
Pages : 208
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Author: Julia Reeder Montgomery
Publisher:
ISBN:
Category :
Languages : en
Pages : 318
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Author: Jong Kuk Na
Publisher:
ISBN:
Category : Inositol
Languages : en
Pages :
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Abstract: The objective of this study was to increase the resistance of crops (tobacco and tomato) to water deficit stress. To achieve this goal transgenic plants were generated using two genes, a putative tomato type I inositol 5 polyphosphatase (5PTase) that terminates inositol 1,4,5 trisphosphate (IP3) signaling and ABRE binding factor ABF4 derived from Arabidopsis. Inositol 1,4,5 triphosphate (IP3), as one of phosphoinositides, is known to transduce a stress signal by changing its level in response to water deficit, osmotic stress, and low temperature in plants. Recently it was shown that type I inositol 5 phosphatases (5PTases), At5PTase1 and AtIP5PII/At5PTase2, regulate IP3 level in plant like in animals and that up-regulation of these genes decreases IP3 levels which leads to a reduction in the expression of ABA-/drought-responsive genes in Arabidopsis. On the basis of sequence similarity to Arabidopsis 5PTases, four tomato cDNAs (Le5PT1-4) that encode putative tomato type I 5PTase proteins were identified. Predicted protein sequences of identified Le5PTs had conserved catalytic domains that are required for 5PTase enzyme activity. Two clones, Le5PT1 and Le5PT2 were similar to AtIP5PII/At5PTase2 and At5PTase1, respectively. The expression of Le5PT1 was down-regulated in early time point under dehydration, NaCl, and exogenous ABA treatment, indicating that Le5PT1 may play a negative role in stress signaling. Transgenic tobacco plants with 35S:Le5PT1 did exhibit weak expression of the drought inducible gene, NtERD10B, but did not show correlation with resistance to water deficit stress. AtABF4, a bzip transcription factor, is known to induce the expression of ABA-responsive genes. The expression of Arabidopsis ABF4/AREB2 gene under the control of guard cell specific KST1 promoter was shown to significantly increase drought tolerance in tobacco and tomato plants. The transgenic plants exhibit significantly lower water loss per unit leaf area compared to wild type plants. ABF4-mGFP protein strongly accumulated in guard cell nuclei. The possibility that ABF4 protein can activate 4XKST1-rd29B:mGFP-GUS fusion construct in a water stress dependent manner was tested. The results show that ABF4 itself may not be sufficient to induce GUS expression even under water stress.
Author: Robert D. Warmbrodt
Publisher:
ISBN:
Category : Gene expression
Languages : en
Pages : 42
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![Characterization of Gene Expression in Salinity-stressed Roots of Tomato, Lycopersicon Esculentum (Mill) [microform] PDF](https://books.google.com/books/content/images/frontcover/0A_ZXwAACAAJ?fife=w80-h100)
Author: Jollanda Effendy
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780612817845
Category : Plants
Languages : en
Pages : 276
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Author: James A. Duke
Publisher: Routledge
ISBN: 1351442120
Category : Health & Fitness
Languages : en
Pages : 678
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CRC Handbook of Phytochemical Constituents of GRAS Herbs and Other Economic Plants is a unique catalog that includes more than 15,000 phytochemical constituents from over 1,000 higher plant species. This volume covers all of the generally-recognized-as-safe (GRAS) herbs and at least 250 important food and medicinal plants. Each entry features the scientific name, one or more common names, a listing of phytochemical constituents, a single datum or range of quantitative data (wet-weight to dry-weight in parts per million), two-letter abbreviation identifying the plant part, and three-letter abbreviation(s) indicating the source(s) of the data. The extraordinary amount of data compiled into an easy-to-use tabular format makes the CRC Handbook of Phytochemical Constituents of GRAS Herbs and Other Economic Plants a volume useful to all pharmacologists, toxicologists, nutritionists, pharmacognicists, and food scientists.
Author: Jerry A. Bartz
Publisher: CRC Press
ISBN: 0824745795
Category : Science
Languages : en
Pages : 841
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Book Description
Focusing exclusively on postharvest vegetable studies, this book covers advances in biochemistry, plant physiology, and molecular physiology to maximize vegetable quality. The book reviews the principles of harvest and storage; factors affecting postharvest physiology, calcium nutrition and irrigation control; product quality changes during handling and storage; technologies to improve quality; spoilage factors and biocontrol methods; and storage characteristics of produce by category. It covers changes in sensory quality such as color, texture, and flavor after harvest and how biotechnology is being used to improve postharvest quality.
Author: Raymond Dobert
Publisher:
ISBN:
Category : Gene expression
Languages : en
Pages : 124
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Author: G.B. Seymour
Publisher: Springer Science & Business Media
ISBN: 9401115842
Category : Technology & Engineering
Languages : en
Pages : 461
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Book Description
It is over 20 years since the publication of A.c. Hulme's two volume text on The Biochemistry of Fruits and thei.r Products. Whilst the bulk of the information contained in that text is still relevant it is true to say that our understanding of the biochemical and genetic mech
