کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8330660 | 1540239 | 2015 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Starch structure in developing barley endosperm
ترجمه فارسی عنوان
ساختار نشاسته در توسعه آندوسپرم جو
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کلمات کلیدی
جو، نشاسته، ساختار آمیلوپکتین، توسعه اندوسپرم،
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Barley spikes of the cultivars/breeding lines Gustav, Karmosé and SLU 7 were harvested at 9, 12 and 24 days after flowering in order to study starch structure in developing barley endosperm. Kernel dry weight, starch content and amylose content increased during development. Structural analysis was performed on whole starch and included the chain-length distribution of the whole starches and their β-limit dextrins. Karmosé, possessing the amo1 mutation, had higher amylose content and a lower proportion of long chains (DP â¥38) in the amylopectin component than SLU 7 and Gustav. Structural differences during endosperm development were seen as a decrease in molar proportion of chains of DP 22-37 in whole starch. In β-limit dextrins, the proportion of Bfp-chains (DP 4-7) increased and the proportion of BSmajor-chains (DP 15-27) decreased during development, suggesting more frequent activity of starch branching enzymes at later stages of maturation, resulting in amylopectin with denser structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 81, November 2015, Pages 730-735
Journal: International Journal of Biological Macromolecules - Volume 81, November 2015, Pages 730-735
نویسندگان
Anna Källman, Eric Bertoft, Kristine Koch, Chuanxin Sun, Per Ã
man, Roger Andersson,