Genome- wide Analysis of bHLH Transcription Factor Family in Grape
YIN Huan;CAI Bin;LI Cheng-hui;CHEN Fei;College of Horticulture,Nanjing Agricultural University;Suzhou Polytechnic Institute of Agriculture;
By the bioinformatics analysis,a total of 110 bHLH genes were identified in grape,and they were phylogeneticly clustered into 24 subfamilies,designated as VvbHLH001 ~ VvbHLH110. These 110 bHLH genes non-randomly distributed on 19 chromosomes,and 10 groups of genes of them were the tandem duplication. The analysis of gene chip expression showed that bHLH genes in grape had organ-specific expression. For example,subfamily Ib(2) expressed in root specifically,which was possibly involved in root activity; the genes VvbHLH003 and VvbHLH16 had special expression in flower pistil and inflorescence,and they might be related to floral organ development. This study could provide a foundation for the further studies on the gene functions and molecular evolutionary mechanism of bHLH family.