Regulation of Starch Degradation in Mature Leaves of Transgenic Apple Trees with Decreased Sorbitol Synthesis
نویسندگان
چکیده
منابع مشابه
Down-regulation of sorbitol dehydrogenase and up-regulation of sucrose synthase in shoot tips of the transgenic apple trees with decreased sorbitol synthesis.
Both sorbitol and sucrose are translocated to, and utilized in, sink tissues of apple (Malus domestica). Considering that antisense suppression of aldose 6-phosphate reductase resulted in lower concentrations of sorbitol and higher concentrations of sucrose in source leaves without altering the vegetative growth of apple trees, it was hypothesized that sorbitol metabolism is down-regulated and ...
متن کاملSorbitol metabolism and sink-source interconversions in developing apple leaves.
In apple (Malus domestica Borkh.) sorbitol is the primary product of photosynthesis, the major translocated form of carbon, and a common fruit constituent and storage compound. Previous work on sorbitol metabolism has revealed a NADPH-dependent aldose 6-phosphate reductase (A6PR) in green tissues, and a NAD-dependent sorbitol dehydrogenase in nongreen tissues. Results here show a decrease in so...
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Leaves from organic apple trees were dipped with different organic materials and leaves were placed on the orchard floor in autumn. Leaf area and the amount of ascospores of Venturia inaequalis were measured in spring. The objective of this research was to find alternatives for urea that simulate the decomposition of apple leaves and reduces the ascospore production. In both years urea gave an ...
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heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
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ژورنال
عنوان ژورنال: HortScience
سال: 2006
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.41.4.1009e