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, MinLiang Wu College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic XinXin Bian College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic ShouRong Hu College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic BenBen Huang College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic JingYuan Shen College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic YaDi Du College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China College of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic YanLi Wang College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China College of Life Sciences, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic MengYuan Xu College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic HuiMin Xu College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic MeiNa Yang College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Search for other works by this author on: Oxford Academic
https://orcid.org/0000-0002-5126-1740 Shuang Wu College of Horticulture, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University , Fuzhou 350002 , China Author for correspondence: wus@fafu.edu.cn Search for other works by this author on: Oxford Academic
The Plant Cell, Volume 36, Issue 6, June 2024, Pages 2375–2392, https://doi.org/10.1093/plcell/koae077
Published:
12 March 2024
Article history
Received:
23 August 2023
Accepted:
28 February 2024
Published:
12 March 2024
Corrected and typeset:
01 April 2024
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MinLiang Wu, XinXin Bian, ShouRong Hu, BenBen Huang, JingYuan Shen, YaDi Du, YanLi Wang, MengYuan Xu, HuiMin Xu, MeiNa Yang, Shuang Wu, A gradient of the HD-Zip regulator Woolly regulates multicellular trichome morphogenesis in tomato, The Plant Cell, Volume 36, Issue 6, June 2024, Pages 2375–2392, https://doi.org/10.1093/plcell/koae077
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Abstract
Homeodomain (HD) proteins regulate embryogenesis in animals such as the fruit fly (Drosophila melanogaster), often in a concentration-dependent manner. HD-leucine zipper (Zip) IV family genes are unique to plants and often function in the L1 epidermal cell layer. However, our understanding of the roles of HD-Zip IV family genes in plant morphogenesis is limited. In this study, we investigated the morphogenesis of tomato (Solanum lycopersicum) multicellular trichomes, a type of micro-organ in plants. We found that a gradient of the HD-Zip IV regulator Woolly (Wo) coordinates spatially polarized cell division and cell expansion in multicellular trichomes. Moreover, we identified a TEOSINTE BRANCHED1, CYCLOIDEA, and PROLIFERATING CELL NUCLEAR ANTIGEN BINDING FACTOR (TCP) transcription factor-encoding gene, SlBRANCHED2a (SlBRC2a), as a key downstream target of Wo that regulates the transition from cell division to cell expansion. High levels of Wo promote cell division in apical trichome cells, whereas in basal trichome cells, Wo mediates a negative feedback loop with SlBRC2a that forces basal cells to enter endoreduplication. The restricted high and low activities of Wo pattern the morphogenesis of tomato multicellular trichomes. These findings provide insights into the functions of HD-Zip IV genes during plant morphogenesis.
© The Author(s) 2024. Published by Oxford University Press on behalf of American Society of Plant Biologists. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
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