PRX102 Participates in Root Hairs Tip Growth of Rice

Autor: Sunok Moon, Behnam Derakhshani, Yun Shil Gho, Eui-Jung Kim, Su Kyoung Lee, Xu Jiang, Choonseok Lee, Ki-Hong Jung
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Rice, Vol 16, Iss 1, Pp 1-10 (2023)
Druh dokumentu: article
ISSN: 1939-8425
1939-8433
DOI: 10.1186/s12284-023-00668-7
Popis: 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.
Databáze: Directory of Open Access Journals
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