Sichuan Agricultural University, Chengdu, China.
PeerJ. 2023 Sep 6;11:e15997. doi: 10.7717/peerj.15997. eCollection 2023.
Rhizosphere bacteria play important roles in plant growth and secondary metabolite accumulation. Moreover, only with favorable production areas and desirable germplasm can high-yield and high-quality medicinal materials be produced. However, whether origin and germplasm indirectly affect the yield and quality of var. through rhizosphere bacterial effects are not known.
In this study, a high-throughput sequencing strategy was used to explore the relationship between the rhizosphere bacterial community and the cultivation of var. from different production areas and germplasm for the first time.
(1) was the dominant bacterial phylum in the rhizosphere soil of var. , and these bacteria were stable and conserved to a certain extent. (2) High abundance of was an important rhizospheric indicator of high yield, and high abundance of was an important indicator of high quality. and might have an important relationship with the yield and quality of var. , respectively. (3) PCoA cluster analysis demonstrated that both production area and germplasm affected the bacterial community structure in the rhizosphere of var. to a certain extent, and production area had the greatest effect. In addition to available potassium, the rhizosphere soil nutrient levels of different production areas strongly affected the bacterial diversity and community. These findings provide a theoretical basis for the exploitation and utilization of rhizosphere microbial resources of var. and offer a novel approach for increasing the yield and quality of this crop.
根际细菌在植物生长和次生代谢物积累中发挥着重要作用。此外，只有拥有优良的生产区域和理想的种质资源，才能生产出高产、高质量的药用材料。然而，产地和种质是否通过根际细菌的作用间接影响 的产量和质量尚不清楚。
本研究首次采用高通量测序策略，探讨了不同产地和种质栽培的 根际细菌群落与 之间的关系。
（1） 是 根际土壤中优势细菌门，这些细菌具有一定的稳定性和保守性。（2） 的高丰度是高产的重要根际指示菌，而 的高丰度是高质量的重要指示菌。 和 可能分别与 的产量和质量有重要关系。（3）PCoA 聚类分析表明，产地和种质在一定程度上均影响 根际细菌群落结构，且产地影响最大。除有效钾外，不同产地根际土壤养分水平强烈影响细菌多样性和群落。这些发现为开发利用 根际微生物资源提供了理论依据，为提高该作物的产量和质量提供了新的途径。
