Arabidopsis NHX5 and NHX6 regulate PIN6-mediated auxin homeostasis and growth
Copyright © 2020 Elsevier GmbH. All rights reserved.
| Publié dans: | Journal of plant physiology. - 1979. - 255(2020) vom: 15. Dez., Seite 153305 |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2020
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| Accès à la collection: | Journal of plant physiology |
| Sujets: | Journal Article Arabidopsis thaliana Auxin NHX5 NHX6 Na(+),K(+)/H(+) antiporters PIN6 Arabidopsis Proteins Indoleacetic Acids Ions plus... |
| Résumé: | Copyright © 2020 Elsevier GmbH. All rights reserved. NHX5 and NHX6, endosomal Na+,K+/H+ antiporters in Arabidopsis thaliana, play a vital role in growth and development. Our previous study has shown that NHX5 and NHX6 function as H+ leak to regulate auxin-mediated growth in Arabidopsis. In this report, we investigated the function of NHX5 and NHX6 in controlling PIN6-mediated auxin homeostasis and growth in Arabidopsis. Phenotypic analyses found that NHX5 and NHX6 were critical for the function of PIN6, an auxin transporter. We further showed that PIN6 depended on NHX5 and NHX6 in regulating auxin homeostasis. NHX5 and NHX6 were colocalized with PIN6, but they did not interact physically. The conserved acidic residues that are vital for the activity of NHX5 and NHX6 were critical for PIN6 function. Together, NHX5 and NHX6 may regulate PIN6 function by their transport activity |
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| Description: | Date Completed 09.03.2021 Date Revised 09.03.2021 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1618-1328 |
| DOI: | 10.1016/j.jplph.2020.153305 |