An ABA-serotonin module regulates root suberization and salinity tolerance.

Autor: Lu HP; State Key Laboratory of Rice Biology, Zhejiang Provincial Key Laboratory of Crop Genetic Resources, The Advanced Seed Institute, Zhejiang University, Hangzhou, 310058, China.; State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China., Gao Q; State Key Laboratory of Rice Biology & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, 310058, China., Han JP; Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland., Guo XH; State Key Laboratory of Rice Biology, Zhejiang Provincial Key Laboratory of Crop Genetic Resources, The Advanced Seed Institute, Zhejiang University, Hangzhou, 310058, China., Wang Q; Wuxi Hupper Bioseed Technology Institute Ltd, Wuxi, 214000, Jiangsu, China., Altosaar I; Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, K1H 8M5, Canada.; Proteins Easy Corp., Kemptville, ON, K0G 1J0, Canada., Barberon M; Department of Botany and Plant Biology, University of Geneva, 1211, Geneva, Switzerland., Liu JX; State Key Laboratory of Plant Physiology and Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China., Gatehouse AMR; School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK., Shu QY; State Key Laboratory of Rice Biology, Zhejiang Provincial Key Laboratory of Crop Genetic Resources, The Advanced Seed Institute, Zhejiang University, Hangzhou, 310058, China.
Jazyk: angličtina
Zdroj: The New phytologist [New Phytol] 2022 Nov; Vol. 236 (3), pp. 958-973. Date of Electronic Publication: 2022 Aug 08.
DOI: 10.1111/nph.18397
Abstrakt: Suberin in roots acts as a physical barrier preventing water/mineral losses. In Arabidopsis, root suberization is regulated by abscisic acid (ABA) and ethylene in response to nutrient stresses. ABA also mediates coordination between microbiota and root endodermis in mineral nutrient homeostasis. However, it is not known whether this regulatory system is common to plants in general, and whether there are other key molecule(s) involved. We show that serotonin acts downstream of ABA in regulating suberization in rice and Arabidopsis and negatively regulates suberization in rice roots in response to salinity. We show that ABA represses transcription of the key gene (OsT5H) in serotonin biosynthesis, thus promoting root suberization in rice. Conversely, overexpression of OsT5H or supplementation with exogenous serotonin represses suberization and reduces tolerance to salt stress. These results identify an ABA-serotonin regulatory module controlling root suberization in rice and Arabidopsis, which is likely to represent a general mechanism as ABA and serotonin are ubiquitous in plants. These findings are of significant importance to breeding novel crop varieties that are resilient to abiotic stresses and developing strategies for production of suberin-rich roots to sequestrate more CO 2 , helping to mitigate the effects of climate change.
(© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.)
Databáze: MEDLINE
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