Xiong Xi, Zeng Ye, Yang Song, et al. Effects of different microbial inoculants on seedling growth and rhizosphere soil microbial diversity of Melicope pteleifolia[J/OL]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2026, 1-9. DOI: 10.11714/acta.snus.ZR20260010.
DOI:
Xiong Xi, Zeng Ye, Yang Song, et al. Effects of different microbial inoculants on seedling growth and rhizosphere soil microbial diversity of Melicope pteleifolia[J/OL]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2026, 1-9. DOI: 10.11714/acta.snus.ZR20260010.DOI:
Effects of different microbial inoculants on seedling growth and rhizosphere soil microbial diversity of Melicope pteleifolia
is a traditional medicinal herb in China and a vital raw material for renowned Chinese patent medicines such as Guangdong herbal tea and Sanjiu Weitai Granules. In the present study,
M. pteleifolia
seedlings were employed as experimental materials, and various types of microbial inoculants were foliar-sprayed to investigate the variations in seedling growth and development as well as rhizosphere soil microbial communities. The results demonstrated that microbial inoculant treatments significantly enhanced the plant height, the stem diameter, the seedling vigor index, and the number of leaf nodes of
M. pteleifolia
seedlings, among which the treatment with photosynthetic bacterial inoculant (T2) exhibited the most remarkable effect. Soil microbial analysis revealed that the application of compound EM inoculants (T1), photosynthetic bacterial inoculant (T2), or their combined application (T4) could all increase the number of soil operational taxonomic units (OTUs), whereas other microbial inoculants resulted in a reduction in OTU abundance. It was observed that Proteobacteria was the dominant phylum in the rhizosphere soil of
M. pteleifolia
seedlings, and the application of all microbial inoculants elevated the relative abundance of Acidobacteriota in the rhizosphere soil. α d
iversity analysis indicated that the diversity of soil microbial communities was higher under T1, T2, and T4 treatments, and this diversity was positively correlated with seedling growth indices. In conclusion, T1, T2, and T4 can serve as suitable microbial fertilizer application schemes for
M. pteleifolia
at the seedling stage, among which Acidobacteriota and Bacteroidota may play pivotal roles in regulating rhizosphere microbial communities and improving soil fertility. This study provides a theoretical foundation for optimizing the cultivation techniques of
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