Elevated carbon dioxide-induced regulation of ethylene in plants

文献类型： 外文期刊

第一作者： Ahammed, Golam Jalal

作者： Ahammed, Golam Jalal;Li, Xin;Ahammed, Golam Jalal

作者机构：

关键词： Ethylene; Climate change; Hormone; Stomatal movement; Stress tolerance; Postharvest storage

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：6.028； 五年影响因子：6.246 ）

ISSN： 0098-8472

年卷期： 2022 年 202 卷

页码：

收录情况： SCI

摘要： Climate change-associated rise in atmospheric CO2 concentration has a wide range of both beneficial and detrimental effects on global food production. In C-3 plants, elevated CO2 concentrations enhance photosynthesis, growth, yield and abiotic stress tolerance, but reduce nutritional values and plant defense against certain pests and pathogens. Phytohormone ethylene is involved in many biological processes and also mediates responses to CO2. Elevated CO2 has been shown to increase, impede, or have no influence on ethylene production at various phases of plant growth and development. Recent studies have unveiled the importance of ethylene biosynthesis and signaling in elevated CO2-induced stress tolerance. Diverse and complex effects of elevated CO2 on ethylene production, stomatal behavior, photosynthesis and metabolic homeostasis mediate abiotic stress tolerance; whereas suppression of ethylene/jasmonate pathways by elevated CO2 attenuates plant defense against insect herbivores and necrotrophic fungal pathogens. Furthermore, treatments with high CO2 concentrations have been found advantageous for postharvest storage of a variety of fresh horticultural products. The senescence-delaying impact of CO2 is ascribed to its role as an ethylene competitor at the ethylene receptor site and on various metabolic pathways. In this review, we firstly discuss the impacts of high atmospheric CO2 concentrations on photosynthesis, stomatal movement, ethylene production and its relationship to plant growth, development, physiology and stress responses. We also expand the discussion to the effect of increased CO2 levels on commercially important plant organs, such as fruit, vegetables and flowers concerning its advantages and dis-advantages in postharvest management. As atmospheric CO2 concentrations will further rise, it is far more important than ever to know how plants react to high CO2 concentrations using cutting-edge molecular technology.

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