Genome-wide analysis of VPE family in four Gossypium species and transcriptional expression of VPEs in the upland cotton seedlings under abiotic stresses.

生物 非生物胁迫 基因 非生物成分 转录组 基因表达 脱落酸 遗传学 基因组 棉属
作者
Liufang Zhu,Xingfen Wang,Juan Tian,Xianlong Zhang,Tingting Yu,Yan Li,Dahui Li
出处
期刊:Functional & Integrative Genomics [Springer Science+Business Media]
被引量:2
标识
DOI:10.1007/s10142-021-00818-4
摘要

Vacuolar processing enzymes (VPEs) play important roles in plant development, programmed cell death, and the responsiveness to biotic and abiotic stresses. To characterize the VPEs in upland cotton (Gossypium hirsutum), the VPE gene family within four Gossypium species, consisting of G. hirsutum, G. barbadense, G. arboreum, and G. raimondii, together with Arabidopsis thaliana, was comparatively analyzed at the genome-wide level. As a result, a total of 43 VPEs were identified, including 13 GhVPEs, 12 GbVPEs, 7 GaVPEs, and 7 GrVPEs, which are evenly distributed with one gene on a chromosome from four Gossypium species, respectively. The phylogenetic tree showed that the identified VPEs within the four Gossypium species could be categorized into β-type, δ-type, and γ-type VPE clades. Collinearity analysis presented 36 of intraspecies VPE-pairs and 152 of interspecies VPE-pairs, respectively, which are included in synteny blocks on chromosome. These results indicate that VPE duplication events have accorded well with the whole genome duplication. And expression profiles of GhVPEs in G. hirsutum seedlings demonstrated that the GhVPEs from the same clade are not necessarily identical in the pattern of transcriptional expression. Upon abiotic stresses (i.e., waterlogging and salt treatments), three GhVPEs (i.e., Ghir_A05G004610, Ghir_A09G011870, and Ghir_D09G011410) were significantly upregulated in their expression amounts, respectively. The GhVPE genes that presented inducible expression under some abiotic stresses may be applied to the improvement of resilience to abiotic stresses for the cultivated cottons.
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