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Lee, Sichul
식물 노화·수명 연구단
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Redundant roles of four ZIP family members in zinc homeostasis and seed development in Arabidopsis thaliana

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Title
Redundant roles of four ZIP family members in zinc homeostasis and seed development in Arabidopsis thaliana
Author(s)
Sichul Lee; Lee, Joohyun; Ricachenevsky, Felipe K.; Punshon, Tracy; Tappero, Ryan; Salt, David E.; Guerinot, Mary Lou
Publication Date
2021-11
Journal
Plant Journal, v.108, no.4, pp.1162 - 1173
Publisher
John Wiley and Sons Inc
Abstract
© 2021 Society for Experimental Biology and John Wiley & Sons LtdZinc (Zn) is essential for normal plant growth and development. The Zn-regulated transporter, iron-regulated transporter (IRT)-like protein (ZIP) family members are involved in Zn transport and cellular Zn homeostasis throughout the domains of life. In this study, we have characterized four ZIP transporters from Arabidopsis thaliana (IRT3, ZIP4, ZIP6, and ZIP9) to better understand their functional roles. The four ZIP proteins can restore the growth defect of a yeast Zn uptake mutant and are upregulated under Zn deficiency. Single and double mutants show no phenotypes under Zn-sufficient or Zn-limited growth conditions. In contrast, triple and quadruple mutants show impaired growth irrespective of external Zn supply due to reduced Zn translocation from root to shoot. All four ZIP genes are highly expressed during seed development, and siliques from all single and higher-order mutants exhibited an increased number of abnormal seeds and decreased Zn levels in mature seeds relative to wild type. The seed phenotypes could be reversed by supplementing the soil with Zn. Our data demonstrate that IRT3, ZIP4, ZIP6, and ZIP9 function redundantly in maintaining Zn homeostasis and seed development in A. thaliana.
URI
https://pr.ibs.re.kr/handle/8788114/11001
DOI
10.1111/tpj.15506
ISSN
0960-7412
Appears in Collections:
Center for Plant Aging Research (식물 노화·수명 연구단) > 1. Journal Papers (저널논문)
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