数字农科院2.0

Genetic Variation In Lbl1 Contributes T.o Depth Of Leaf B lades Lobes Between Cotton Subspecies, Gossypium Barbadense And Gossypium Hirsutum

文献类型： 外文期刊

作者： Zhao Xiang;He Dao-fang;Abid, Muhammad Ali;He Dao-fang;Zhang Rui;Liang Cheng-zhen;Cai Yong-ping;Zhu Tao;He Jin-ling;Zhao Xiang

作者机构：

关键词： leaf blades lobes; HD-ZIPI; LBL1; cotton; Gossypium barbadense; Gossypium hirsutum

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2018 年 17 卷 11 期

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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 P30A (shallow-lobed leaf) and sea-island cotton genotype ISR (deep-lobed 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.002G244000. 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.

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