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PRX102参与水稻根毛的顶端生长。

PRX102 Participates in Root Hairs Tip Growth of Rice.

作者信息

Moon Sunok, Derakhshani Behnam, Gho Yun Shil, Kim Eui-Jung, Lee Su Kyoung, Jiang Xu, Lee Choonseok, Jung Ki-Hong

机构信息

Graduate School of Green-Bio Science and Crop Biotech Institute, Kyung Hee University, Yongin, 17104, Korea.

出版信息

Rice (N Y). 2023 Nov 16;16(1):51. doi: 10.1186/s12284-023-00668-7.

DOI:10.1186/s12284-023-00668-7
PMID:37971600
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10654324/
Abstract

Root hairs are extensions of epidermal cells on the root tips that increase the root contract surface area with the soil. For polar tip growth, newly synthesized proteins and other materials must be incorporated into the tips of root hairs. Here, we report the characterization of PRX102, a root hair preferential endoplasmic reticulum peroxidase. During root hair growth, PRX102 has a polar localization pattern within the tip regions of root hairs but it loses this polarity after growth termination. Moreover, PRX102 participates in root hair outgrowth by regulating dense cytoplasmic streaming toward the tip. This role is distinct from those of other peroxidases playing roles in the root hairs and regulating reactive oxygen species homeostasis. RNA-seq analysis using prx102 root hairs revealed that 87 genes including glutathione S-transferase were downregulated. Our results therefore suggest a new function of peroxidase as a player in the delivery of substances to the tips of growing root hairs.

摘要

根毛是根尖表皮细胞的延伸部分，它增加了根与土壤的接触表面积。对于极性顶端生长，新合成的蛋白质和其他物质必须被整合到根毛的顶端。在此，我们报道了PRX102的特性，它是一种根毛优先表达的内质网过氧化物酶。在根毛生长过程中，PRX102在根毛顶端区域具有极性定位模式，但在生长终止后失去这种极性。此外，PRX102通过调节致密的细胞质流向顶端来参与根毛的生长。这一作用不同于其他在根毛中发挥作用并调节活性氧稳态的过氧化物酶。使用prx102根毛进行的RNA测序分析表明，包括谷胱甘肽S-转移酶在内的87个基因被下调。因此，我们的结果表明过氧化物酶具有一种新功能，即作为向生长中的根毛顶端输送物质的参与者。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/54ae68dd3389/12284_2023_668_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/15b9a06ea713/12284_2023_668_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/81c393a26369/12284_2023_668_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/6924c1cbb30f/12284_2023_668_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/4088662ac61a/12284_2023_668_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/54ae68dd3389/12284_2023_668_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/15b9a06ea713/12284_2023_668_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/81c393a26369/12284_2023_668_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/6924c1cbb30f/12284_2023_668_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/4088662ac61a/12284_2023_668_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ecd/10654324/54ae68dd3389/12284_2023_668_Fig5_HTML.jpg

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