Genomic analysis of sugar transporter genes in peanut (Arachis hypogaea):Characteristic,evolution and expression profiles during development and stress  

作　　者：Zhijun Xu Lei Xu Xiaowen Hu 

机构地区：[1]Guangdong Engineering Technology Research Center for Dryland Water-saving Agriculture,Zhanjiang Experiment Station,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang,Guangdong,China [2]Zhanjiang Experimental and Observation Station for National Long-term Agricultural Green Development,Zhanjiang,Guangdong,China

出　　处：《Oil Crop Science》2022年第4期189-199,共11页中国油料作物学报(英文版）

基　　金：funded by Guangdong Basic and Applied Research Foundation,Grant Number 2020A1515010636;Central publicinterest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences,Grant Number 1630102017002 and1630102017006。

摘　　要：Peanut(Arachis hypogaea L.) is an economically significant crop with aerial cleistogamous flowers and subterranean geocarpic fruit(pods).The formation of peanut pod requires movement of the embryo from air to ground and then development in the soil,which is a complex biological process involving transport and accumulation of sugars.Sugar transport proteins(STP) mediate the transport of monosaccharides in various physiological processes,including fertilization,ovary formation,and seed development.In this study,a total of 36 AhSTP genes(AhSTP1–36) containing the conserved sugar_tr motif were identified in the A.hypogaea genome.Phylogenetic analysis revealed that AhSTP genes were classified into four clades,and the arrangement of motifs in AhSTP proteins was similar within clades.Synteny analysis revealed that segmental duplication events have played an important role in the expansion of STP genes in peanut,and chromosome rearrangements might have facilitated the exchange of STP genes between the A and B sub-genomes.Transcriptome analyses revealed that the expression patterns of AhSTP genes varied among tissues.Hormone and abiotic stress treatments could upregulate or down-regulate the expression of AhSTP genes,and low temperature had a major effect on the expression of most AhSTP genes.Four AhSTP genes(AhSTP3,AhSTP9,AhSTP19,and AhSTP28) were specifically expressed in the pod,indicating that these genes might be involved in pod formation and development in peanut.The unique expression of these four genes during pod construction and development was confirmed in two different type cultivars using quantitative real-time PCR analysis.Our findings provide new insights into the STP gene family in peanut and will aid future functional studies of AhSTP genes.

关 键 词：PEANUT STP gene Family EVOLUTION Expression patterns Pod development 

分 类 号：S565.2[农业科学—作物学]