Effect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains
查看参考文献32篇
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文摘
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Starch content is a key factor affecting sorghum grain quality. The research of sorghum grain starch accumulation and the related synthesis enzyme activities has great signiifcance for understanding the mechanisms of starch metabolisms. The differences between a high and a low starch content sorghum hybrids (Tieza 17 and Liaoza 11, respectively) in grain starch accumulation and the related synthesis enzyme activities were assessed following imposition of water stress during lfowering stage. The total starch, amylase and amylopectin accumulation all decreased at the mid-late stage of grain iflling under drought stress during lfowering stage. The maximum and mean accumulation rates also decreased. During grain iflling, soluble starch synthase (SSS), granule-bound starch synthase (GBSS), starch branching enzyme (SBE), and starch debranching enzymes (DBE) activities were all affected, though differently. Drought stress reduced starch accumulation in a larger extent for Tieza 17 than Liaoza 11. Drought stress during lfowing stage reduced starch synthesis enzyme activities, thus reducing starch accumulation in grains, and the differences between starch components were also demonstrated under drought stress. |
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来源
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Journal of Integrative Agriculture
,2014,13(11):2399-2406 【核心库】
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DOI
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10.1016/s2095-3119(13)60694-2
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关键词
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sorghum
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drought stress
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starch accumulation
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enzyme activity
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地址
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1.
College of Agronomy, Shenyang Agricultural University, Shenyang, 110866
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Keshan Research Institute, Heilongjiang Institute of Agricultural Sciences, Qiqihar, 161606
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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2095-3119 |
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学科
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生物工程学(生物技术) |
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基金
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supported by the Earmarked Fund for Modern Agro-Industry Technology Research System, China.
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文献收藏号
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CSCD:5305123
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