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Effect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains
Alternative TitleEffect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains
Yi Bing1; Zhou Yufei1; Gao Mingyue1; Zhang Zhuang1; Han Yi1; Yang Guangdong2; Xu Wenjuan1; Huang Ruidong1
2014
Source PublicationJOURNAL OF INTEGRATIVE AGRICULTURE
ISSN2095-3119
Volume13Issue:11Pages:2399-2406
AbstractStarch content is a key factor affecting sorghum grain quality. The research of sorghum grain starch accumulation and the related synthesis enzyme activities has great significance 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 flowering stage. The total starch, amylase and amylopectin accumulation all decreased at the mid-late stage of grain filling under drought stress during flowering stage. The maximum and mean accumulation rates also decreased. During grain filling, 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 flowing stage reduced starch synthesis enzyme activities, thus reducing starch accumulation in grains, and the differences between starch components were also demonstrated under drought stress.
Other AbstractStarch 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.
KeywordDEVELOPING ENDOSPERM RICE ENDOSPERM WHEAT BIOSYNTHESIS LOCALIZATION PULLULANASE ISOAMYLASE sorghum drought stress starch accumulation enzyme activity
Indexed ByCSCD
Language英语
Funding Project[Earmarked Fund for Modern Agro-Industry Technology Research System, China]
CSCD IDCSCD:5305123
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152615
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.Heilongjiang Institute Agr Sci, Keshan Res Institute, Qiqihar 161606, Peoples R China
Recommended Citation
GB/T 7714
Yi Bing,Zhou Yufei,Gao Mingyue,et al. Effect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2014,13(11):2399-2406.
APA Yi Bing.,Zhou Yufei.,Gao Mingyue.,Zhang Zhuang.,Han Yi.,...&Huang Ruidong.(2014).Effect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains.JOURNAL OF INTEGRATIVE AGRICULTURE,13(11),2399-2406.
MLA Yi Bing,et al."Effect of Drought Stress During Flowering Stage on Starch Accumulation and Starch Synthesis Enzymes in Sorghum Grains".JOURNAL OF INTEGRATIVE AGRICULTURE 13.11(2014):2399-2406.
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