Zhu Jia-Tao, Xue Wei, Gao Jun-Qin, Li Qian-Wei, Yu Wen-Han, Yu Fei-Hai
School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China.
Institute of Wetland Ecology & Clone Ecology/Zhejiang Provincial Key Laboratory of Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang, China.
Front Plant Sci. 2023 Oct 9;14:1272313. doi: 10.3389/fpls.2023.1272313. eCollection 2023.
Biodiversity plays important roles in ecosystem functions and genetic diversity is a key component of biodiversity. While effects of genetic diversity on ecosystem functions have been extensively documented, no study has tested how genetic diversity of plants influences greenhouse gas fluxes from plant-soil systems. We assembled experimental populations consisting of 1, 4 or 8 genotypes of the clonal plant in microcosms, and measured fluxes of CO and CH from the microcosms. The fluxes of CO and CO equivalent from the microcosms with the 1-genotype populations of were significantly lower than those with the 4- and 8-genotype populations, and such an effect increased significantly with increasing the growth period. The cumulative CO flux was significantly negatively related to the growth of the populations. However, genotypic diversity did not significantly affect the flux of CH. We conclude that genotypic diversity of plant populations can influence CO flux from plant-soil systems. The findings highlight the importance of genetic diversity in regulating greenhouse gas fluxes.
生物多样性在生态系统功能中发挥着重要作用，而遗传多样性是生物多样性的关键组成部分。虽然遗传多样性对生态系统功能的影响已有大量文献记载，但尚无研究测试植物的遗传多样性如何影响植物 - 土壤系统的温室气体通量。我们在微观世界中组建了由克隆植物的1、4或8个基因型组成的实验种群，并测量了微观世界中CO和CH的通量。具有1个基因型种群的微观世界中CO和CO2当量的通量显著低于具有4个和8个基因型种群的微观世界，并且随着生长期的增加，这种影响显著增强。累积CO通量与该种群的生长显著负相关。然而，基因型多样性对CH通量没有显著影响。我们得出结论，植物种群的基因型多样性可以影响植物 - 土壤系统的CO通量。这些发现凸显了遗传多样性在调节温室气体通量方面的重要性。
