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Temporal regulation of alternative splicing events in rice memory under drought stress

Plant Diversity 2022年第1期44卷 116-125页

作者： Hong Yang Ping Li Guihua Jin Daping Gui Li Liu Chengjun Zhang Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan650201China State Key Laboratory of Biocatalysis and Enzyme Engineering Hubei Collaborative Innovation Center for Green Transformation of Bio-ResourcesHubei Key Laboratory of Industrial BiotechnologySchool of Life SciencesHubei UniversityWuhan430062China Haiyan Engineering&Technology Center Kunming Institute of BotanyChinese Academy of ScienceKunmingYunnan650201China University of Chinese Academy of Sciences Beijing100049China

Plant adaptation to drought stress is essential for plant survival and crop ***,harnessing drought memory,which is induced by repeated stress and recovery cycles,was suggested as a means to improve drought resistance at the transcriptional ***,the genetic mechanism underlying drought memory is ***,we carried out a quantitative analysis of alternative splicing(AS)events in rice memory under drought stress,generating 12 transcriptome ***,we identified exon skipping(ES)as the predominant AS type(>80%)in differential alternative splicing(DAS)in response to drought *** our analysis pipeline to investigate DAS events following drought stress in six other plant species revealed variable ES frequencies ranging from 9.94%to 60.70%depending on the species,suggesting that the relative frequency of DAS types in plants is likely to be *** dinucleotide sequence at AS splice sites in rice following drought stress was preferentially GC-AG and *** U12-type splicing uses the AFAC site,this suggests that drought stress may increase U12-type splicing,and thus increase ES *** hypothesize that multiple isofbrms derived from exon skipping may be induced by drought stress in *** also identified 20 transcription factors and three highly connected hub genes with potential roles in drought memory that may be good targets for plant breeding.

关键词： Alternative splicing drought memory Exon skipping

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