Tian Zhenya, Ma Chao, Zhao Chenchen, Zhang Yan, Gao Xuyuan, Tian Zhenqi, Chen Hongsong, Guo Jianying, Zhou Zhongshi
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
National Nanfan Research Institute, Chinese Academy of Agricultural Sciences, Sanya, China.
Front Plant Sci. 2022 Jul 27;13:907764. doi: 10.3389/fpls.2022.907764. eCollection 2022.
To predict and mitigate the effects of climate change on communities and ecosystems, the joint effects of extreme climatic events on species interactions need to be understood. Using the common ragweed ( L.)-leaf beetle () system, we investigated the effects of heat wave and elevated CO on common ragweed growth, secondary metabolism, and the consequent impacts on the beetle. The results showed that elevated CO and heat wave facilitated growth; further, accumulated large amounts of defensive secondary metabolites. Being fed on grown under elevated CO and heat wave conditions resulted in the poor performance of (high mortality, long development period, and low reproduction). Overall, under elevated CO, heat wave improved the defensive ability of against herbivores. On the other hand, enhanced adaptability to climatic changes may aggravate invasive plant distribution, posing a challenge to the control of invasive plants in the future.
为预测和减轻气候变化对群落和生态系统的影响，需要了解极端气候事件对物种相互作用的联合影响。我们利用普通豚草（L.）-叶甲虫（）系统，研究了热浪和二氧化碳浓度升高对普通豚草生长、次生代谢以及对甲虫后续影响。结果表明，二氧化碳浓度升高和热浪促进了普通豚草的生长；此外，普通豚草积累了大量防御性次生代谢产物。取食在二氧化碳浓度升高和热浪条件下生长的普通豚草导致叶甲虫表现不佳（高死亡率、长发育周期和低繁殖率）。总体而言，在二氧化碳浓度升高的情况下，热浪提高了普通豚草对食草动物的防御能力。另一方面，增强的气候变化适应能力可能会加剧入侵植物的分布，给未来入侵植物的控制带来挑战。
