2026-10-07T05:19:17Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33960463 2026-09-26T03:58:15Z category_26983 item_type_3 month_year_09_2026

<b><i>Stellera chamaejasme</i></b><b> enhances soil bacterial adaptive potential to facilitate expansion</b> Qingchen Xiao (22652471) Soil biology Poisonous weeds Bacterial community Stochastic processes Phylogenetic conservatism Niche breadth Environmental adaptability Network stability <p dir="ltr"><a href="" target="_blank">1. Poisonous weeds pose severe threats to ecosystem functions and services in grasslands. Soil microorganisms play crucial roles in mediating plant growth and adaptation, yet </a>their responses to poisonous weeds and potential contributions to plant expansion via enhanced microbial adaptability remain elusive.</p><p dir="ltr"><a href="" target="_blank">2. Here, we carried out a large</a>-scale investigation spanning 3,000 km across grasslands dominated by <i>Stellera chamaejasme</i>, an iconic poisonous weed widely distributed in China, aiming to elucidate soil bacterial community assembly mechanisms, ecological and evolutionary attributes, and co-occurrence network traits, thereby revealing microbial environmental adaptive potential.</p><p dir="ltr">3. The results indicated that stochastic processes played a significantly greater role in shaping soil bacterial community assembly in <i>Stellera</i>-dominated grasslands than control grasslands free of <i>Stellera</i>. Correspondingly, bacterial communities showed broader niche breadths, stronger phylogenetic conservatism, and more complex and stable co-occurrence networks.</p><p dir="ltr">4. <i>Synthesis and applications. </i>Our findings demonstrate that soil bacterial communities in <i>Stellera</i>-dominated grasslands exhibit enhanced environmental adaptive potential, as indicated by proxy metrics including stochasticity, niche breadth, phylogenetic signal, and network topology. This enhanced potential may be associated with <i>Stellera</i> colonization and expansion across heterogeneous habitats via positive plant-soil feedbacks. Therefore, disrupting this positive feedback and modulating microbial communities beneficial to palatable forage species may contribute to grassland restoration.</p> 2026-09-26T03:58:15Z Dataset Dataset 10.6084/m9.figshare.33960463.v2 https://figshare.com/articles/dataset/_b_i_Stellera_chamaejasme_i_b_b_enhances_soil_bacterial_adaptive_potential_to_facilitate_expansion_b_/33960463 CC BY 4.0