生物技术通报 ›› 2020, Vol. 36 ›› Issue (11): 103-111.doi: 10.13560/j.cnki.biotech.bull.1985.2020-0263

• 综述与专论 • 上一篇    下一篇

水稻耐碱性研究进展

冷春旭(), 郑福余, 赵北平, 刘海英, 王玉杰()   

  1. 黑龙江省农业科学院生物技术研究所 黑龙江省作物与家畜分子育种重点实验室,哈尔滨 150028
  • 收稿日期:2020-03-12 出版日期:2020-11-26 发布日期:2020-11-20
  • 作者简介:冷春旭,女,博士,助理研究员,研究方向:水稻抗逆分子育种;E-mail: lengchunxu@163.com
  • 基金资助:
    国家自然科学基金项目(31701503);国家重点研发计划课题(2016YFD0300501);黑龙江省农业科学院院级科研项目(2019YYYF011)

Advances on Alkaline Tolerance of Rice

LENG Chun-xu(), ZHENG Fu-yu, ZHAO Bei-ping, LIU Hai-ying, WANG Yu-jie()   

  1. Biotechnology Research Institute of Heilongjiang Academy of Agricultural Sciences,Key Laboratory of Crop and Livestock Molecular Breeding of Heilongjiang, Harbin 150028
  • Received:2020-03-12 Published:2020-11-26 Online:2020-11-20

摘要:

我国土地盐碱化程度不断加剧,严重制约了粮食生产。水稻作为中度盐敏感作物,根系具有吸收盐分和分泌有机酸的作用,其生长的水环境能够淡化土壤表层盐碱度,是改良盐碱地的首选粮食作物。碱胁迫和盐胁迫均能对水稻造成渗透胁迫和离子毒害,而碱胁迫使水稻遭受高pH值和高盐分双重损伤,伤害作用和调控机制比盐胁迫更为严重和复杂。目前,研究多集中于盐胁迫,对碱胁迫下水稻响应和调控机制的研究较少。综述了碱胁迫对水稻生长发育和生理生化的影响、水稻耐碱机理及相关基因的研究,提出了强化水稻耐碱性的策略,以期通过分子生物技术培育耐碱水稻新品种,实现盐碱地改良,扩大水稻种植面积和总产量,保障粮食生产安全。

关键词: 水稻, 耐碱性, 碱胁迫

Abstract:

In China,with the degree of land salinization aggravating,the crop production is impeded. Rice,as a moderately salt-sensitive crop,as its roots absorb salt and secrete organic acids,may dilute the salinity-alkalinity of the soil surface in its growing water environment,thus making it the first choice for improving saline-alkali land. Salt and alkali stress cause both osmotic stress and ion toxicity to rice plants. Furthermore,alkali stress results in the rice suffering from double damages of high pH value and high salinity,the damage is more severe and the regulation mechanism is more complex than salt stress. At present,most of the researches had focused on salt stress,but few studies were on the response and regulation mechanism of alkali stress. This paper systematically reviewed the effects of alkali stress on the growth,development,physiology,and biochemistry of rice,as well as the alkali-resistance mechanism and related genes,and finally proposed a strategy of enhancing the alkali tolerance of rice. It is aimed to breed new alkali-resistant rice varieties through the molecular biological technique for improving saline-alkali soil,increasing rice plating area and rice yield,and thus protecting national food security.

Key words: rice, alkali resistance, alkali stress