浙江农业科学 ›› 2026, Vol. 67 ›› Issue (10): 2385-2393.DOI: 10.16178/j.issn.0528-9017.20250543

• 药用植物 • 上一篇    下一篇

连作半夏根际促生菌BXGJ053的分离鉴定及其促进种子萌发的研究

向栎伊(), 李柔, 吴德梦, 王云, 杨韩奕琪, 张彩虹, 罗倩, 周丹, 程搏幸()   

  1. 贵州师范学院 生物科学学院,贵州 贵阳 550018
  • 收稿日期:2025-07-29 出版日期:2026-10-11 发布日期:2026-10-19
  • 通讯作者: 程搏幸
  • 作者简介:向栎伊,研究方向为植物资源的调查与研究。E-mail:3312233811@qq.com
    程搏幸,E-mail:cbx@gznc.edu.cn。
  • 基金资助:
    贵州师范学院2024年度大学生创新创业训练计划项目(2024142230460);贵州师范学院2023年大学生自主研究科研项目(2023DXS014);第十届全国大学生生命科学竞赛(科学探究类)(1009539);贵州师范学院2024年度校级博士课题(2024BS006);贵州师范学院科学研究基金(2022ZD003)

Isolation and identification of plant growth-promoting rhizobacteria Priestia megaterium BXGJ053 from Pinellia ternata under continuous cropping and its effect on promoting seed germination

XIANG Liyi(), LI Rou, WU Demeng, WANG Yun, YANG Hanyiqi, ZHANG Caihong, LUO Qian, ZHOU Dan, CHENG Boxing()   

  1. College of Biological Sciences,Guizhou Education University,Guiyang 550018,Guizhou
  • Received:2025-07-29 Online:2026-10-11 Published:2026-10-19
  • Contact: CHENG Boxing

摘要:

连作障碍是半夏种植过程中常见的问题之一,导致半夏产量和品质下降,严重阻碍了半夏产业健康发展。本研究从连作栽培中健康生长的半夏根际土壤分离促生菌株,开展菌株促进种子萌发和生长特性的研究。使用平板法分离菌株,利用上海青种子、半夏种子进行促生菌株筛选。基于16S rDNA序列分析、系统发育分析及形态特征观察等方法鉴定该菌株,并评价该菌株的促生特性。结果表明,共筛选到半夏根际细菌109株,其中BXGJ053菌株具有促进上海青种子、半夏种子萌发的作用,且对半夏发芽率、根长及株高均有显著(p<0.05)促进作用。BXGJ053菌株的16S rDNA序列分析和系统发育分析表明,该菌株与巨大普里斯特氏菌(Priestia megaterium)聚为一支,被命名为巨大普里斯特氏菌BXGJ053。BXGJ053菌株具有溶磷、产铁载体和产吲哚乙酸的能力。本研究为半夏生态种植提供了理论基础。

关键词: 半夏, 连作障碍, 巨大普里斯特氏菌BXGJ053, 种子萌发

Abstract:

Continuous cropping obstacle is one of the common problems during continuous cultivation of Pinellia ternata,which causes the yield and quality of Pinellia ternata to decline,and seriously hinders the healthy development of Pinellia ternata industry. Isolation and identification of plant growth-promoting rhizobacteria (PGPR) from the rhizosphere soil of healthy Pinellia ternata grown under continuous cropping were carried out in this study,and their seed germination-promoting effects and growth characterization were also validated. The isolation of the strain was carried out using the plate method. PGPR was screened out using Shanghaiqing seeds and Pinellia ternata seeds, and the growth-promoting characteristics were identified and evaluated based on 16S rDNA sequence analysis,phylogenetic analysis,and morphological feature analysis. The results showed that a total of 109 strains were screened from Pinellia ternata,among which BXGJ053 strain had the effect of promoting the germination of Shanghaiqing seeds and Pinellia ternata seeds,and had a significant(p<0.05))effec on the germination rate,root length and plant height of Pinellia ternata. The results of 16S rDNA sequence analysis and phylogenetic analysis of BXGJ053 strain showed that the strain clustered with Priestia megaterium,and it was named as Priestia megaterium BXGJ053. BXGJ053 strain had the ability to lyse phosphorus,produce ion carriers and IAA. This study provides a theoretical basis for the ecological cultivation of Pinellia ternata.

Key words: Pinellia ternata, continuous cropping obstacle, Priestia megaterium BXGJ053, seed germination

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