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农学学报 ›› 2020, Vol. 10 ›› Issue (10): 1-6.doi: 10.11923/j.issn.2095-4050.cjas19040021

所属专题: 水稻

• 农艺科学/生理生化 •    下一篇

非结构性碳水化合物与水稻颖花形成关系的研究进展

董明辉1,2(), 江贻2, 陈培峰1, 赵步洪2, 顾俊荣1   

  1. 1江苏太湖地区农业科学研究所,江苏苏州 215155
    2扬州大学江苏省作物遗传生理国家重点实验室培育点,江苏扬州 225009
  • 收稿日期:2019-04-15 修回日期:2019-06-23 出版日期:2020-10-20 发布日期:2020-11-18
  • 作者简介:董明辉,男,1970年出生,江苏高邮人,研究员,博士,研究方向:水稻高产优质栽培与生理。通信地址:215106 江苏省苏州市吴中区东山大道2351号,Tel:0512-65382356,E-mail: mhdong@yzu.edu.cn
  • 基金资助:
    粮食丰产增效科技创新专项“水稻生产系统对气候变化的响应机制及其适应性栽培途径”(2017YFD0300102);国家自然科学基金“水氮互作调控超级稻弱势籽粒充实的生理机制”(31471447);江苏省六大人才高峰计划项目“优质食味多抗粳稻新品种选育与应用”(NY-129);扬州市现代农业项目“高产水稻节肥减药增效技术集成与示范”(YZ2017045)

The Relationship Between Non-structural Carbohydrates and Rice Spikelet Formation: A Review

Dong Minghui1,2(), Jiang Yi2, Chen Peifeng1, Zhao Buhong2, Gu Junrong1   

  1. 1Institute of Agricultural Sciences in the Taihu Lake Region of Jiangsu Province, Suzhou 215155, Jiangsu, China
    2Fostering Base for the National Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, Jiangsu, China
  • Received:2019-04-15 Revised:2019-06-23 Online:2020-10-20 Published:2020-11-18

摘要:

为了深入研究水稻幼穗分化发育及颖花形成过程中非结构性碳水化合物(NSC)作用机理,本文综合分析了水稻颖花形成的特点,总结了幼穗分化发育与同化物代谢的关系和幼穗发育与非结构性碳水化合物的关系,并探讨糖信号与激素信号的相互关系及其对幼穗发育的调节作用及机理。认为大穗型水稻二次颖花易退化、穗粒数不稳定与NSC关系密切,可溶性糖与植物激素调节及其相互作用对幼穗的分化发育有重要调控作用,提出通过深入研究NSC代谢特征及穗分化发育阶段各可溶性糖组分的积累与分解规律,以及幼穗分化发育过程中内源激素水平、蛋白表达及代谢关键酶活性,探寻NSC糖信号-激素及激素间的平衡-相关蛋白表达和代谢酶活性-颖花数形成之间的内在联系,以期通过调节NSC代谢,构建促进颖花分化、减少退化为目标的栽培调控技术。

关键词: 水稻, 籽粒, 颖花形成, 非结构性碳水化合物, 生理机制

Abstract:

To further study the mechanism of non-structural carbohydrates (NSC) during the differentiation and development of young panicles and the formation of spikelets in rice, this study comprehensively analyzed the characteristics of spikelet formation in rice, cleared the relationship between the differentiation and development of young panicle and the metabolism of assimilates, the relationship between the development of young panicle and non-structural carbohydrates, then discussed the relationship between sugar signal and hormone signal and its mechanism of regulating young panicle development is believed panicle. It is believed that the easy degeneration of secondary spikelets and the unstable number of grains per panicle of large panicle type rice are closely related to NSC. The regulating of soluble sugar and plant hormones play an important role in regulating the differentiation and development of young panicles. By studying the metabolic characteristics of NSC and the accumulation and decomposition of soluble sugar components, endogenous hormone level in rice spike, protein expression, key metabolic enzyme activity at the different spike developmental stages, and using the different panicle type rice varieties as materials, we could explore the internal relationship between sugar signal and hormone in NSC, and hormone balance related protein expression and metabolic enzyme activity and spike grain number, aiming to construct the cultivation techniques for promoting spikelet differentiation and reducing degradation by adjusting the NSC metabolic.

Key words: Rice, Seed, Spikelets Formation, Non-structural Carbohydrates, Physiological Mechanism

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