Cargando…
Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants
Soil salinization and water shortage cause ion imbalance and hyperosmoticity in plant cells, adversely impairing photosynthesis efficiency. How soil salinity-induced photosynthetic acclimation influences the cross-tolerance to drought conditions represents a promising research topic. This study was...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7154942/ https://www.ncbi.nlm.nih.gov/pubmed/32187994 http://dx.doi.org/10.3390/plants9030363 |
_version_ | 1783521930952835072 |
---|---|
author | Yang, Xiaolong Li, Yangyang Chen, Hangbing Huang, Juan Zhang, Yumeng Qi, Mingfang Liu, Yufeng Li, Tianlai |
author_facet | Yang, Xiaolong Li, Yangyang Chen, Hangbing Huang, Juan Zhang, Yumeng Qi, Mingfang Liu, Yufeng Li, Tianlai |
author_sort | Yang, Xiaolong |
collection | PubMed |
description | Soil salinization and water shortage cause ion imbalance and hyperosmoticity in plant cells, adversely impairing photosynthesis efficiency. How soil salinity-induced photosynthetic acclimation influences the cross-tolerance to drought conditions represents a promising research topic. This study was to reveal the photosynthetic mechanism of soil salinity-induced resistance to the subsequent drought stress in tomato leaves through comprehensive photosynthesis-related spectroscopy analysis. We conducted soil salinity pretreatment and subsequent drought stress experiments, including irrigation with 100 mL water, 100 mL 100 mM NaCl solution (NaCl100), 50 mL water, and 50 mL 100 mM NaCl solution (NaCl50) for five days, followed by five-day drought stress. The results showed that soil salinity treatment by NaCl decreased the rate of photosynthetic gas exchange but enhanced CO(2) assimilation, along with photosystem II [PS(II)] and photosystem I [PS(I)] activity and photochemical efficiency in tomato plants compared with water pretreatment after subsequent drought stress. NaCl100 and NaCl50 had the capacity to maintain non-photochemical quenching (NPQ) of chlorophyll fluorescence and the cyclic electron (CEF) flow around PSI in tomato leaves after being subjected to subsequent drought stress, thus avoiding the decrease of photosynthetic efficiency under drought conditions. NaCl100 and NaCl50 pretreatment induced a higher proton motive force (pmf) and also alleviated the damage to the thylakoid membrane and adenosine triphosphate (ATP) synthase of tomato leaves caused by subsequent drought stress. Overall, soil salinity treatment could enhance drought resistance in tomato plants by inducing NPQ, maintaining CEF and pmf that tradeoff between photoprotection and photochemistry reactions. This study also provides a photosynthetic perspective for salt and drought cross-tolerance. |
format | Online Article Text |
id | pubmed-7154942 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-71549422020-04-21 Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants Yang, Xiaolong Li, Yangyang Chen, Hangbing Huang, Juan Zhang, Yumeng Qi, Mingfang Liu, Yufeng Li, Tianlai Plants (Basel) Article Soil salinization and water shortage cause ion imbalance and hyperosmoticity in plant cells, adversely impairing photosynthesis efficiency. How soil salinity-induced photosynthetic acclimation influences the cross-tolerance to drought conditions represents a promising research topic. This study was to reveal the photosynthetic mechanism of soil salinity-induced resistance to the subsequent drought stress in tomato leaves through comprehensive photosynthesis-related spectroscopy analysis. We conducted soil salinity pretreatment and subsequent drought stress experiments, including irrigation with 100 mL water, 100 mL 100 mM NaCl solution (NaCl100), 50 mL water, and 50 mL 100 mM NaCl solution (NaCl50) for five days, followed by five-day drought stress. The results showed that soil salinity treatment by NaCl decreased the rate of photosynthetic gas exchange but enhanced CO(2) assimilation, along with photosystem II [PS(II)] and photosystem I [PS(I)] activity and photochemical efficiency in tomato plants compared with water pretreatment after subsequent drought stress. NaCl100 and NaCl50 had the capacity to maintain non-photochemical quenching (NPQ) of chlorophyll fluorescence and the cyclic electron (CEF) flow around PSI in tomato leaves after being subjected to subsequent drought stress, thus avoiding the decrease of photosynthetic efficiency under drought conditions. NaCl100 and NaCl50 pretreatment induced a higher proton motive force (pmf) and also alleviated the damage to the thylakoid membrane and adenosine triphosphate (ATP) synthase of tomato leaves caused by subsequent drought stress. Overall, soil salinity treatment could enhance drought resistance in tomato plants by inducing NPQ, maintaining CEF and pmf that tradeoff between photoprotection and photochemistry reactions. This study also provides a photosynthetic perspective for salt and drought cross-tolerance. MDPI 2020-03-16 /pmc/articles/PMC7154942/ /pubmed/32187994 http://dx.doi.org/10.3390/plants9030363 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yang, Xiaolong Li, Yangyang Chen, Hangbing Huang, Juan Zhang, Yumeng Qi, Mingfang Liu, Yufeng Li, Tianlai Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title | Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title_full | Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title_fullStr | Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title_full_unstemmed | Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title_short | Photosynthetic Response Mechanism of Soil Salinity-Induced Cross-Tolerance to Subsequent Drought Stress in Tomato Plants |
title_sort | photosynthetic response mechanism of soil salinity-induced cross-tolerance to subsequent drought stress in tomato plants |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7154942/ https://www.ncbi.nlm.nih.gov/pubmed/32187994 http://dx.doi.org/10.3390/plants9030363 |
work_keys_str_mv | AT yangxiaolong photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT liyangyang photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT chenhangbing photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT huangjuan photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT zhangyumeng photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT qimingfang photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT liuyufeng photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants AT litianlai photosyntheticresponsemechanismofsoilsalinityinducedcrosstolerancetosubsequentdroughtstressintomatoplants |