Genetic variation in LBL1 contributes to depth of leaf blades lobes between cotton subspecies, Gossypium barbadense and Gossypium hirsutum

查看全文 作　　者：HE Dao-[1,2]fang;ZHAO [1,2]Xiang;LIANG Cheng-[2]zhen;ZHU [2]Tao;Muhammad Ali [2]Abid;CAI Yong-[1]ping;HE Jin-[1]ling;ZHANG [2]Rui

机构地区：[1]School of Life Science, Anhui Agricultural University;[2]Biotechnology Research Institute, Chinese Academy of Agricultural Sciences

出　　处：《Journal of Integrative Agriculture》索引2018年第17卷第11期,共11页

基　　金：supported by the Genetically Modified Organisms Breeding Major Projects,China (2016ZX0800 5004, 2016ZX08009003-003-004);the National Natural Science Foundation of China (31601349);the Innovation Program of Chinese Academy of Agricultural Sciences 摘　　要：Leaf is a essential part of the plants for photosynthetic activities which mainly economize the resources for boll heath. Significant variations of leaf shapes across the Gossypium sp. considerably influence the infiltration of sunlight for photosynthesis. To understand the genetic variants and molecular processes underlying for cotton leaf shape, we used F_2 population derived from upland cotton genotype P30 A(shallow-lobed leaf) and sea-island cotton genotype ISR(deeplobed leaf) to map leaf deep lobed phenotype controlling genes LBL1 and LBL2. Genetic analysis and localization results have unmasked the position and interaction between both loci of LBL1 and LBL2, and revealed the co-dominance impact of the genes in regulating depth of leaf blades lobes in cotton. LBL1 had been described as a main gene and member of transcription factor family leucine zipper(HD-ZIPI) from a class I homologous domain factor Gorai.002 G244000. The qRT-PCR results elaborated the continuous change in expression level of LBL1 at different growth stages and leaf parts of cotton. Higher expression level was observed in mature large leaves followed by medium and young leaves respectively. For further confirmation, plants were tested from hormonal induction treatments, which explained that LBL1 expression was influenced by hormonal signaling. Moreover, the highest expression level was detected in brassinolides(BR) treatment as compared to other hormones, and this hormone plays an important role in the process of leaf blade lobed formation. 关键词：基因变化棉花叶片脑亚种光合作用控制基因基因分析

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Genetic variation in LBL1 contributes to depth of leaf blades lobes between cotton subspecies, Gossypium barbadense and Gossypium hirsutum

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