Abstract
Tomato is one of the most widely consumed horticultural products. However, tomato is very sensitive to changes in temperature. Daily average temperatures above 32 °C severely reduced tomato plant growth, development, and productivity. Therefore, climate change-induced global warming is a major threat to future tomato production. Good photosynthetic capability under heat stress conditions is known to be a major sign of heat tolerance. Tomato INDOLE-ACETIC-ACID (SlIAA9) is a transcriptional repressor in auxin signaling. SlIAA9 mutation caused heightened endogenous auxin response and biosynthesis within plant tissues. In this study, we studied the photosynthetic capability of iaa9-3 and iaa9-5 mutants under heat-stress conditions. We discovered that both iaa9-3 and iaa9-5 could maintain their photosynthetic capability after 14 days of heat treatment (>40 °C), differing from Wild Type-Micro-Tom (WT-MT) tomato. Both iaa9 mutants had higher net photosynthetic rate, stomatal conductance, leaf total chlorophyll, leaf carotenoids, Fv/Fm value, and lower leaf MDA than WT-MT. These results suggested that the SlIAA9 mutation benefits plant adaptation to heat stress.
Subject
Plant Science,Ecology,Ecology, Evolution, Behavior and Systematics
Reference60 articles.
1. Development of a Nutritionally Balanced Pizza as a Functional Meal Designed to Meet Published Dietary Guidelines;Combet;Public Health Nutr.,2014
2. Drought Tolerance Mechanisms in Plants: Physiological Responses Associated with Water Deficit Stress in Solanum Lycopersicum;Kamanga;Adv. Crop Sci. Technol.,2018
3. Rajametov, S.N., Yang, E.Y., Jeong, H.B., Cho, M.C., Chae, S.Y., and Paudel, N. (2021). Heat Treatment in Two Tomato Cultivars: A Study of the Effect on Physiological and Growth Recovery. Horticulturae, 7.
4. Collins, M., Knutti, R., Arblaster, J., Dufresne, J.-L., Fichefet, T., Friedlingstein, P., Gao, X., Gutowski, W.J., Johns, T., and Krinner, G. (2013). Climate Change 2013-The Physical Science Basis: Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press.
5. Assessing the Impact of Global Warming on Worldwide Open Field Tomato Cultivation through CSIRO-Mk3·0 Global Climate Model;Silva;J. Agric. Sci.,2017
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献