Coordinating gibberellin and brassinosteroid signaling beyond Green Revolution  

作　　者：Hongning Tong Chengcai Chu 

机构地区：[1]National Key Facility for Crop Gene Resources and Genetic Improvement,Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China [2]Guangdong Laboratory for Lingnan Modern Agriculture,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,College of Agriculture,South China Agricultural University,Guangzhou,Guangdong 510642,China

出　　处：《Journal of Genetics and Genomics》2023年第7期459-461,共3页遗传学报（英文版）

基　　金：supported by grants from the National Key R&D Program of China (2022YFD1201700);the National Science Foundation of China (U21A20208)

摘　　要：The Green Revolution,which took place in the 1960s,was instrumental in increasing grain yields and mitigating the world’s food crisis.Breeding semi-dwarfing crops was a critical activity that significantly improved lodging resistance,field management,and harvesting convenience.Subsequent molecular genetic studies revealed that the semi-dwarfing genes used in rice and wheat,two major staple crops,are related to the plant hormone gibberellin(GA).In rice,SD1 encodes a defective GA synthetic enzyme GA20ox-2,while in wheat,Rht-1(Rht-B1b or Rht-D1b)encodes the gain-of-function form of the GA signaling inhibitors known as DELLA proteins(Peng et al.,1999;Sasaki et al.,2002).However,defects in either GA synthesis or signaling can decrease nitrogen use efficiency(NUE)and potentially lead to inferior grain development.Ultimately,the success of the Green Revolution relies heavily on the massive input of nitrogen fertilizer,which causes severe environmental issues.

关 键 词：WHEAT BR GA Green Revolution 

分 类 号：S565.4[农业科学—作物学]