Gomola Courtney E, McKay John K, Wallenstein Matthew D, Wagg Cameron, O'Brien Michael J
Bioagricultural Sciences and Pest Management, C129 Plant Sciences Colorado State University Fort Collins Colorado.
Graduate Degree Program in Ecology Colorado State University Fort Collins Colorado.
Ecol Evol. 2018 Oct 31;8(23):11717-11724. doi: 10.1002/ece3.4623. eCollection 2018 Dec.
Soil microbial communities affect species demographic rates of plants. In turn, plants influence the composition and function of the soil microbiome, potentially resulting in beneficial feedbacks that alter their fitness and establishment. For example, differences in the ability to stimulate soil enzyme activity among plant lineages may affect plant growth and reproduction. We used a common garden study to test differences in plant-stimulated soil enzyme activity between lineages of the same species across developmental stages. Lineages employed different strategies whereby growth, days to flowering and seed size traded-off with plant-stimulated soil enzyme activity. Specifically, the smaller seeded lineage stimulated more enzyme activity at the early stage of development and flowered earlier while the larger seeded lineage sustained lower but consistent enzyme activity through development. We suggest that these lineages, which are both successful invaders, employ distinct strategies (a colonizer and a competitor) and differ in their influence on soil microbial activity. . The ability to influence the soil microbial community by plants may be an important trait that trades off with growth, flowering, and seed size for promoting plant establishment, reproduction, and invasion.
土壤微生物群落影响植物的物种种群统计学速率。反过来，植物也会影响土壤微生物组的组成和功能，这可能会产生有益的反馈，从而改变它们的适合度和定植情况。例如，不同植物谱系刺激土壤酶活性的能力差异可能会影响植物的生长和繁殖。我们采用了一项共同花园研究，来测试同一物种的不同谱系在发育阶段之间植物刺激土壤酶活性的差异。不同谱系采用了不同的策略，即生长、开花天数和种子大小与植物刺激的土壤酶活性之间存在权衡。具体而言，种子较小的谱系在发育早期刺激更多的酶活性，并且开花更早，而种子较大的谱系在整个发育过程中维持较低但稳定的酶活性。我们认为，这些都是成功入侵物种的谱系采用了不同的策略（一个殖民者和一个竞争者），并且它们对土壤微生物活性的影响也不同。植物影响土壤微生物群落的能力可能是一个重要的性状，它与生长、开花和种子大小进行权衡，以促进植物的定植、繁殖和入侵。
