不同生境小叶红豆全株连续体细菌群落格局
{"_":"Bacterial Community Patterns Across the Whole-Plant Continuum of in Diverse Habitats.","i":["Ormosia microphylla"]}
摘要(中文译文)
该植物是中国国家一级保护野生植物，面临自然更新能力弱和环境适应性有限等保护挑战。植物相关细菌群落是宿主相关微生态系统的重要组成部分，但该植物全株连续体上的细菌群落模式尚不清楚。为提供描述性微生态基线，我们表征了中国西南三个地理生境（喀斯特山区、高原向平原过渡的坡地带和丘陵区）中该植物根际-根-茎-叶连续体的细菌群落。采用高通量扩增子测序分析细菌多样性和组成，并采用共现网络分析描述细菌分类群之间的统计学关联。观察到三种主要模式。第一，细菌α多样性总体上从根际向内部组织递减（根际 > 根 > 茎 > 叶）。第二，细菌组成因植物部位和生境而异。优势根际分类群在不同生境间存在差异，而内部组织总体上以变形菌门（Proteobacteria）为主。某属在多个内生部位中显示相对较高的丰度，提示该属可作为候选内生分类群供未来验证。第三，共现网络分析显示网络大小、复杂性及正/负共现模式存在生境和部位相关差异。总体而言，这些结果描述了该植物中部位和生境相关的细菌群落模式，并为未来的培养依赖性和功能性研究提供了微生态基线。
Abstract
is a national first-class protected wild plant in China that faces conservation challenges, including weak natural regeneration and limited environmental adaptability. Plant-associated bacterial communities are important components of host-associated microecosystems, but bacterial community patterns across the whole-plant continuum of remain poorly understood. To provide a descriptive micro-ecological baseline, we characterized bacterial communities across the rhizosphere-root-stem-leaf continuum of in three geographic habitats in Southwest China: karst mountainous area, a plateau-to-plain transitional slope zone, and a hilly area. High-throughput amplicon sequencing was used to analyze bacterial diversity and composition, and co-occurrence network analysis was used to describe statistical associations among bacterial taxa. Three main patterns were observed. First, bacterial alpha diversity generally declined from the rhizosphere to internal tissues (rhizosphere > root > stem > leaf). Second, bacterial composition varied by plant compartment and habitat. Dominant rhizosphere taxa differed among habitats, whereas internal tissues were generally dominated by Proteobacteria. showed relatively high abundance in several endophytic compartments, suggesting that this genus may be considered a candidate endophytic taxon for future validation. Third, co-occurrence network analysis showed habitat- and compartment-associated differences in network size, complexity, and positive/negative co-occurrence patterns. Overall, these results describe compartment- and habitat-associated bacterial community patterns in and provide a micro-ecological baseline for future culture-dependent and functional studies.
如何引用
AMA
Lixu Li, Feng Chen, Guohua He, Xiao Wei, Feng Wang, Jianmin Tang. {"_":"Bacterial Community Patterns Across the Whole-Plant Continuum of in Diverse Habitats.","i":["Ormosia microphylla"]}. Microorganisms. 2026; doi:10.3390/microorganisms14051143.
APA
Lixu Li, Feng Chen, Guohua He, Xiao Wei, Feng Wang, Jianmin Tang (2026). {"_":"Bacterial Community Patterns Across the Whole-Plant Continuum of in Diverse Habitats.","i":["Ormosia microphylla"]}. Microorganisms. https://doi.org/10.3390/microorganisms14051143
GB/T 7714
Lixu Li, Feng Chen, Guohua He, Xiao Wei, Feng Wang, Jianmin Tang. {"_":"Bacterial Community Patterns Across the Whole-Plant Continuum of in Diverse Habitats.","i":["Ormosia microphylla"]}[J]. Microorganisms, 2026 doi:10.3390/microorganisms14051143.
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