The HKT1 Na + transporter protects plant fertility by decreasing Na + content in stamen filaments.

Autor: Uchiyama T; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Saito S; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Yamanashi T; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Kato M; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Takebayashi K; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Hamamoto S; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Tsujii M; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Takagi T; Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Bunkyo-ku, Tokyo 112-8681, Japan., Nagata N; Department of Chemical and Biological Sciences, Faculty of Science, Japan Women's University, Bunkyo-ku, Tokyo 112-8681, Japan., Ikeda H; Research Center for Electron Photon Science, Tohoku University, Sendai 982-0826, Japan.; Cyclotron and Radioisotope Center, Tohoku University, Sendai 980-8578, Japan., Kikunaga H; Research Center for Electron Photon Science, Tohoku University, Sendai 982-0826, Japan., Suda T; Research Center for Electron Photon Science, Tohoku University, Sendai 982-0826, Japan., Toyama S; Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Miwa M; Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Matsuyama S; Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Seo M; RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan., Horie T; Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan., Kuromori T; Advanced Science Research Center, Okayama University, Okayama 700-8530, Japan., Yamagami M; Institute for Environmental Sciences, Aomori 039-3212, Japan., Ishimaru Y; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan., Uozumi N; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2023 Jun 02; Vol. 9 (22), pp. eadg5495. Date of Electronic Publication: 2023 Jun 02.
DOI: 10.1126/sciadv.adg5495
Abstrakt: Salinity stress can greatly reduce seed production because plants are especially sensitive to salt during their reproductive stage. Here, we show that the sodium ion transporter AtHKT1;1 is specifically expressed around the phloem and xylem of the stamen in Arabidopsis thaliana to prevent a marked decrease in seed production caused by salt stress. The stamens of AtHKT1;1 mutant under salt stress overaccumulate Na + , limiting their elongation and resulting in male sterility. Specifically restricting AtHKT1;1 expression to the phloem leads to a 1.5-fold increase in the seed yield upon sodium ion stress. Expanding phloem expression of AtHKT1;1 throughout the entire plant is a promising strategy for increasing plant productivity under salinity stress.
Databáze: MEDLINE