菊芋14-3-3基因家族的鉴定及其对非生物胁迫响应的分析OA北大核心CSTPCD

[Objectives]The paper aimed to provide a basis for studying the function of 14-3-3 protein and breeding of Jerusalem artichoke,we identified the 14-3-3 gene family of Jerusalem artichoke and analyzed their expression patterns in response to high temperature,cold,salt and drought stresses.[Methods]Cloning and bioinformatics analysis were used to study gene properties,and RNA-seq data analysis and RT-qPCR were used to study gene response patterns to abiotic stress.[Results]Ten members of the 14-3-3 gene family,namely HtGRF1-HtGRF10(GenBank accession No.OP132618-OP132627),were cloned from Jerusalem artichoke.According to the evolutionary relationship,these genes were divided into two subfamilies,HtGRF1-HtGRF7 belonged to the non-ε group,and HtGRF8-HtGRF10 belonged to the ε group,which usually formed homologous or heterodimers.The expression level of HtGRF2/3/6/9 in sprouts,roots,stems and leaves was higher than those of other genes.The expression level of HtGRF3/5/9 was higher in stolon and tuber formation stages than that in the tuber rapid intamescentia and maturity stages during the tuber development.Comprehensive analysis of HtGRF in response to abiotic stress in roots and leaves showed that HtGRF6 expression level decreased under high temperature,salt and drought stresses,while HtGRF2/3/7/8/9 expression level decreased under salt stress,but increased under drought stress.HtGRF1 expression level increased under cold stress,HtGRF4/5 expression level decreased under drought stress,and HtGRF10 expression level did not change significantly.[Conclusions]The 14-3-3 protein family in Jerusalem artichoke was highly conserved and encoded by multiple genes,and played an important role in the growth and development and in coping with complex environments.