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首页> 中文期刊> 《农业科学学报（英文版）》 >Up-regulation of a homeodomain-leucine zipper gene HD-1 contributes to trichome initiation and development in cotton

Up-regulation of a homeodomain-leucine zipper gene HD-1 contributes to trichome initiation and development in cotton

         
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摘要

Plant trichomes originate from epidermal cells. In this work, we demonstrated that a homeodomain-leucine zipper (HD-Zip) gene, Gh_A06G1283 (GhHD-1A), was related to the leaf trichome trait in allotetraploid cotton and could be a candidate gene for the T1 locus. The ortholog of GhHD-1A in the hairless accession Gossypium barbadense cv. Hai7124 was interrupted by a long terminal repeat (LTR) retrotransposon, while GhHD-1A worked well in the hairy accession Gossypium hirsutum acc. T586. Sequence and phylogenetic analysis showed that GhHD-1A belonged to the HD-Zip IV gene family, which mainly regulated epidermis hair development in plants. Silencing of GhHD-1A and its homoeologs GhHD-1D in allotetraploid T586 and Hai7124 could significantly reduce the density of leaf hairs and affect the expression levels of other genes related to leaf trichome formation. Further analysis found that GhHD-1A mainly regulated trichome initiation on the upper epidermal hairs of leaves in cotton, while the up-regulated expression of GhHD-1A in different organs/tissues also altered epidermal trichome development. This study not only helps to unravel the important roles of GhHD-1A in regulating trichome initiation in cotton, but also provides a reference for exploring the different forms of trichome development in plants.

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  • 来源
    《农业科学学报（英文版）》 |2019年第2期|361-371|共11页
  • 作者

    NIU Er-li; CAI Cai-ping; BAO Jiang-hao; WU Shuang; ZHAO Liang; GUO Wang-zhen;

  • 作者单位

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

    State Key Laboratory of Crop Genetics & Germplasm Enhancement, Ministry of Science and Technology/Hybrid Cotton R&D Engineering Research Center, Ministry of Education/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;

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