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Dominant and Priming Role of Waterlogging in Tomato at e[CO2] by Multivariate Analysis by Rong Zhou; Fangling Jiang; Xiaqing Yu; Lamis Abdelhakim; Xiangnan Li; Eva Rosenqvist; Carl-Otto Ottosen; Zhen Wu is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The frequency of waterlogging episodes has increased due to unpredictable and intense rainfalls. However, less is known about waterlogging memory and its interaction with other climate change events, such as elevated CO2 concentration (e[CO2]). This study investigated the combined effects of e[CO2] and two rounds of waterlogging stress on the growth of cultivated tomato (Solanum lycopersicum) and wild tomato (S. pimpinellifolium). The aim is to elucidate the interaction between genotypes and environmental factors and thereby to improve crop resilience to climate change. We found that two rounds of treatments appeared to induce different acclimation strategies of the two tomato genotypes. S. pimpinellifolium responded more negatively to the first-time waterlogging than S. lycopersicum, as indicated by decreased photosynthesis and biomass loss. Nevertheless, the two genotypes respond similarly when waterlogging stress recurred, showing that they could maintain a higher leaf photosynthesis compared to single stress, especially for the wild genotype. This showed that waterlogging priming played a positive role in stress memory in both tomato genotypes. Multivariate analysis showed that

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Author

Rong Zhou; Fangling Jiang; Xiaqing Yu; Lamis Abdelhakim; Xiangnan Li; Eva Rosenqvist; Carl-Otto Ottosen; Zhen Wu

Published

2022

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)