Genome-wide identification and expression analysis of heat shock protein 90s family in kiwifruit
The purpose of this study is to identify members of AcHsp90 gene family in kiwifruit,so as to provide a basis for the further study of the Hsp90 genes biological functions and making a contribution to research the mechanism of heat resistance of kiwifruit.In this study,the members of AcHsp90 gene family of kiwifruit were identified and systematically analyzed by bioinformatics software.Analysis results revealed that a total of 10 AcHsp90 family genes were identified in kiwifruit.Gene structure and phylogenetic analysis divided the AcHsp90 genes into four groups,the conserved structures and motifs were similar among proteins within the same group,but which differed among different groups.Promoter analysis revealed multiple abiotic stress-related cis-elements and hormone-responsive cis-elements in the promoters of the AcHsp90 genes.Genomic collinearity analysis re-vealed that AcHsp90 genes existed four segmental duplication events.Heat expression patterns showed that AcHsp90 genes were significantly expressed in three tissues of thermos-sensitive species'Hongyang'and ther-mos-tolerant species'Huate'root,leaf and flower,but the relative expression levels were different.Compared to those in thermos-sensitive species'Hongyang',the appearance of peak values observed in most AcHsp90 genes in thermos-tolerant species'Huate'under heat stress was hysteretic.The members of AcHsp90 gene family exhibit structural diversity and evolutionary conservation,which display significantly expression patterns in heat stress condition,implying they are widely involved in the process of kiwifruit acquired thermos-tolerance.
Hsp90 gene familykiwifruitheat stressexpression patterngene family analysis
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