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Moderately Elevated Temperature Offsets the Adverse Effects of Waterlogging Stress on Tomato

Authors :
Junqin Wen
Shumei Sui
Jie Tian
Yanhai Ji
Zhen Wu
Fangling Jiang
Carl-Otto Ottosen
Qiwen Zhong
Rong Zhou
Source :
Plants, Vol 13, Iss 14, p 1924 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

Global warming and waterlogging stress due to climate change are expected to continue influencing agricultural production worldwide. In the field, two or more environmental stresses usually happen simultaneously, inducing more complex responses in plants compared with individual stresses. Our aim was to clarify how the two key factors (temperature and water) interacted and influenced physiological response and plant growth in tomatoes under ambient temperature, moderately elevated temperature, waterlogging stress, and moderately elevated temperature and waterlogging stress. The results showed that leaf photosynthesis was inhibited by waterlogging stress but enhanced by elevated temperature, as shown by both the light- and temperature-response curves. The elevated temperature decreased leaf water-use efficiency, but enhanced plant growth and fresh and dry weights of plants under both normal water supply and waterlogging stress conditions. Elevated temperature generally decreased the anthocyanin and flavonol index in tomato leaves compared with the control temperature, regardless of water status. The increase in the optimal temperature was more pronounced in plants under normal irrigation than under waterlogging stress. Waterlogging stress significantly inhibited the root length, and leaf number and area, while the moderately elevated temperature significantly enhanced the leaf number and area. Overall, the moderately elevated temperature offset the effects of waterlogging stress on tomato plants, as shown by leaf gas exchange, plant size, and dry matter accumulation. Our study will improve the understanding of how tomatoes respond to increasing temperature and excess water.

Details

Language :
English
ISSN :
22237747
Volume :
13
Issue :
14
Database :
Directory of Open Access Journals
Journal :
Plants
Publication Type :
Academic Journal
Accession number :
edsdoj.5b9d4d957d74d51a85e876bed9879e7
Document Type :
article
Full Text :
https://doi.org/10.3390/plants13141924