Micro-trichome as a class I homeodomain-leucine zipper gene regulates multicellular trichome development in Cucumis sativus

Journal of Integrative Plant Biology
Junlong ZhaoRun Cai

Abstract

Plant trichomes serve as a highly suitable model for investigating cell differentiation at the single-cell level. The regulatory genes involved in unicellular trichome development in Arabidopsis thaliana have been intensively studied, but genes regulating multicellular trichome development in plants remain unclear. Here, we characterized Cucumis sativus (cucumber) trichomes as representative multicellular and unbranched structures, and identified Micro-trichome (Mict), using map-based cloning in an F2 segregating population of 7,936 individuals generated from a spontaneous mict mutant. In mict plants, trichomes in both leaves and fruits, are small, poorly developed, and denser than in the wild type. Sequence analysis revealed that a 2,649-bp genomic deletion, spanning the first and second exons, occurred in a plant-specific class I homeodomain-leucine zipper gene. Tissue-specific expression analysis indicated that Mict is strongly expressed in the trichome cells. Transcriptome profiling identified potential targets of Mict including putative homologs of genes known in other systems to regulate trichome development, meristem determinacy, and hormone responsiveness. Phylogenic analysis charted the relationships among putative hom...Continue Reading

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Citations

Nov 1, 2015·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yun-Li WangRun Cai
Nov 12, 2015·Journal of Integrative Plant Biology·Dabing Zhang
Mar 27, 2016·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Haiyang ZhangZhonghai Ren
Feb 14, 2018·Journal of Experimental Botany·Sen YangHuazhong Ren
Nov 9, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Chunli GuoRun Cai
Nov 18, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Huayu ZhuLuming Yang
Sep 23, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kailiang BoXingfang Gu
Dec 17, 2018·Molecular Biology Reports·Gabriela Carmona-CastroIrene Perea-Arango
Feb 13, 2021·The Plant Journal : for Cell and Molecular Biology·Yaqi ZhangXingwang Liu
Feb 26, 2021·Annals of Botany·Harold Suárez-BaronNatalia Pabón-Mora
May 3, 2021·Microscopy Research and Technique·Dao-Jing WangHua-Ming An
Jun 29, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kiros GebretsadikKailiang Bo
Jul 2, 2021·Horticulture Research·Zhongxuan FengXingwang Liu

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