Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, Université Paris-Sud, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Bâtiment 630, 91405 Orsay, France.
Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, Université Paris-Sud, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Sorbonne Paris-Cité, Bâtiment 630, 91405 Orsay, France; Current address: Department of Plant Systems Biology, VIB, and Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium.
Trends Plant Sci. 2017 Oct;22(10):857-870. doi: 10.1016/j.tplants.2017.07.007. Epub 2017 Aug 12.
Ongoing human-induced changes in the composition of the atmosphere continue to stimulate interest in the effects of high CO on plants, but its potential impact on inducible plant defense pathways remains poorly defined. Recently, several studies have reported that growth at elevated CO is sufficient to induce defenses such as the salicylic acid pathway, thereby increasing plant resistance to pathogens. These reports contrast with evidence that defense pathways can be promoted by photorespiration, which is inhibited at high CO. Here, we review signaling, metabolic, and redox processes modulated by CO levels and discuss issues to be resolved in elucidating the relationships between primary metabolism, inducible defense, and biotic stress resistance.
大气成分的持续人为改变继续激发人们对高浓度 CO 对植物影响的兴趣，但它对植物诱导防御途径的潜在影响仍未得到明确界定。最近，有几项研究报告称，在高浓度 CO 下生长足以诱导防御途径，如水杨酸途径，从而提高植物对病原体的抗性。这些报告与防御途径可以通过光合作用促进的证据相矛盾，而光合作用在高浓度 CO 下受到抑制。在这里，我们综述了由 CO 水平调节的信号转导、代谢和氧化还原过程，并讨论了在阐明初级代谢、诱导防御和生物胁迫抗性之间的关系时需要解决的问题。
