Putrescine, spermidine, and spermine play distinct roles in rice salt tolerance

作     者：Md Azizul ISlam PANG Jin-huan MENG Fan-wei LI Ya-wen XU Ning YANG Chao LIU Jun Md Azizul Islam;PANG Jin-huan;MENG Fan-wei;LI Ya-wen;XU Ning;YANG Chao;LIU Jun

作者机构：State Key Laboratory of Plant GenomicsInstitute of MicrobiologyChinese Academy of Sciences(CAS)Beijing 100101P.R.China CAS Center for Excellence in Biotic InteractionsUniversity of Chinese Academy of SciencesBeijing 100049P.R.China Department of Biotechnology and Genetic EngineeringFaculty of Applied Science and TechnologyIslamic UniversityKushtia 7003Bangladesh 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2020年第19卷第3期

页      面：643-655页

核心收录：

学科分类：0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 0905[农学-畜牧学] 0906[农学-兽医学] 09[农学] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the National Key R&D Program(2017YFD0200900) the Natural Science Foundation of China(31570252 and 31601629) the Chinese Academy of Sciences(CAS)and the World Academy of Sciences(TWAS)Presidents Fellowship for supporting Md Azizul Islam as a doctoral student(2015CTF068) 

主　　题：rice polyamines NaCl polyamine oxidase guazatine 

摘      要：Polyamines(PAs) play diverse roles in plant growth and development,as well as responses to environmental *** this study,the effects of PAs on rice salt tolerance were *** stress resulted in the alteration of endogenous PAs levels in rice roots and leaves,where spermidine(Spd) and spermine(Spm) contents were increased,and putrescine(Put) content was ***-qPCR analysis revealed that PAs biosynthesis-related genes ADC1,ODC,and Arginase were significantly downregulated by salt treatment;however,SAMDC transcription was significantly *** Spm enhanced rice salt tolerance remarkably;however,exogenous Put and Spd undermined rice salt *** rice plants overexpressing SAMDC display a higher ratio of Spm/(Put+Spd) and enhanced salt *** stress also increased polyamine oxidase activities in rice,resulting in elevated reactive oxygen species(ROS) *** findings revealed that accumulation of Put and Spd substantially reduced salt tolerance in rice,likely by facilitating ROS production;whereas,conversion of Put and Spd to Spm contributes to rice salt tolerance.