Genome-Wide Identification and Expression Profiling Suggest that Invertase Genes Function in Silique Development and the Response to Sclerotinia sclerotiorum in Brassica napus  

作　　者：Jingsen Liu Jinqi Ma Ai Lin Chao Zhang Bo Yang Liyuan Zhang Lin Huang Jiana Li 

机构地区：[1]Chongqing Rapeseed Engineering Research Center,College of Agronomy and Biotechnology,Chongqing,400715,China [2]Academy of Agricultural Sciences,Southwest University,Chongqing,400715,China

出　　处：《Phyton-International Journal of Experimental Botany》2020年第2期253-273,共21页国际实验植物学杂志（英文）

基　　金：This work was supported by grants from the National Natural Science Foundation of China(31830067);National Key Research and Development Program of China(2018YFD0100504-05);the“111”Project(B12006).

摘　　要：Invertase(INV),a key enzyme in sucrose metabolism,irreversibly catalyzes the hydrolysis of sucrose to glucose and fructose,thus playing important roles in plant growth,development,and biotic and abiotic stress responses.In this study,we identified 27 members of the BnaINV family in Brassica napus.We constructed a phylogenetic tree of the family and predicted the gene structures,conserved motifs,cis-acting elements in promoters,physicochemical properties of encoded proteins,and chromosomal distribution of the BnaINVs.We also analyzed the expression of the BnaINVs in different tissues and developmental stages in the B.napus cultivar Zhongshuang 11 using qRT-PCR.In addition,we analyzed RNA-sequencing data to explore the expression patterns of the BnaINVs in four cultivars with different harvest indices and in plants inoculated with the pathogenic fungus Sclerotinia sclerotiorum.We used WGCNA(weighted coexpression network analysis)to uncover BnaINV regulatory networks.Finally,we explored the expression patterns of several BnaINV genes in cultivars with long(Zhongshuang 4)and short(Ningyou 12)siliques.Our results suggest that BnaINVs play important roles in the growth and development of rapeseed siliques and the defense response against pathogens.Our findings could facilitate the breeding of high-yielding B.napus cultivars with strong disease resistance.

关 键 词：Brassica napus INVERTASE SCLEROTINIA WGCNA RNA-SEQ 

分 类 号：R73[医药卫生—肿瘤]