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中国农学通报 ›› 2026, Vol. 42 ›› Issue (16): 110-121.doi: 10.11924/j.issn.1000-6850.casb2026-0332

• 林学·园艺·园林 • 上一篇    下一篇

2种生防菌对澳蜡花扦插生根及其根际、根内微生物多样性的影响

王丽花1(), 孙爱青2, 瞿素萍1, 杨维1, 陈敏1, 杨秀梅1()   

  1. 1 云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心, 昆明 650205
    2 北京林业大学, 北京 100083
  • 收稿日期:2026-04-27 修回日期:2026-06-15 出版日期:2026-08-25 发布日期:2026-08-20
  • 通讯作者:
    杨秀梅,女,1977年出生,云南建水人,研究员,硕士,主要从事花卉病害识别及防控技术研究工作。通信地址:650205 云南昆明盘龙区北京路2238号 省农科院花卉所,Tel:0871-65892602,E-mail:
  • 作者简介:

    王丽花,女,1977年出生,云南祥云人,研究员,学士,主要从事花卉病虫害防控及质量控制技术研究工作。通信地址:650205 云南昆明盘龙区北京路2238号 省农科院花卉所,Tel:0871-65892602,E-mail:

  • 基金资助:
    中央引导地方科技发展资金“新特澳蜡盆花规模化生产技术集成与应用研究”(202407AC110002)

Effects of Two Biocontrol Bacteria on Cutting Rooting and Diversity of Rhizosphere and Endophytic Microbes of Chamelaucium ciliatum

WANG Lihua1(), SUN Aiqing2, QU Suping1, YANG Wei1, CHEN Min1, YANG Xiumei1()   

  1. 1 Flower Research Institute, Yunnan Academy of Agriculture Science/Yunnan Key Laboratory for Flower Breeding/National Engineering Research Center for Ornamental Horticulture, Kunming 650205
    2 Beijing Forestry University, Beijing 100083
  • Received:2026-04-27 Revised:2026-06-15 Published:2026-08-25 Online:2026-08-20

摘要:

为探究枯草芽孢杆菌(Bacillus subtilis)和木霉菌(Trichoderma harzianum)对澳蜡花(Chamelaucium ciliatum)扦插生根效果及根际、根内微生物多样性和群落结构的调控作用,以‘中白’澳蜡花插穗为材料,设置对照(CK,喷施75%百菌清)、枯草芽孢杆菌处理(BS)和木霉菌处理(TH),开展扦插试验,并结合扩增子、宏基因组及代谢组分析,评估不同处理对澳蜡花扦插生根能力的影响。结果表明,BS处理组的生根率最高(85.94%),较CK组(58.59%)提升27.35%;TH处理组平均单株根重最大(112.34 mg),较CK组(87.63 mg)提升28.19%,且BS、TH处理组的根系更新鲜丰满,无黄褐根和偏根。微生物群落分析显示,BS组的根内生细菌中,变形菌门(77.75%)、拟杆菌门(4.20%)、厚壁菌门(1.98%)的丰度显著高于CK组,且富集酸微菌目及短根瘤菌属等兼具促生和抗逆功能的菌群;TH组的根际微生物物种OTU数达2821个,特有类群达559个,多样性最高。代谢组分析发现,BS组的根系代谢物显著富集去氧腺苷等参与嘌呤代谢的相关物质,TH组显著富集L-谷氨酰胺等与丙氨酸-天冬氨酸-谷氨酸代谢相关物质,且2组的多肽类物质占比(BS组91.50%、TH组95.47%)均高于CK组(91.15%)。综上,枯草芽孢杆菌和木霉菌可通过调控根际与根内微生物群落结构,并优化根系代谢途径,显著提升澳蜡花的扦插生根效果,其中,枯草芽孢杆菌在提高生根率方面优势更为突出。研究结果可为澳蜡花的高效扦插繁育提供重要的科学依据。

关键词: 澳蜡花, 扦插生根, 枯草芽孢杆菌, 木霉菌, 根际微生物, 代谢组

Abstract:

This study aimed to explore the regulation of Bacillus subtilis and Trichoderma harzianum on cutting rooting, rhizosphere and endophytic microbes diversity and community structure of Chamelaucium ciliatum. Using the cuttings of the cultivar ‘Zhong Bai’ as materials, three treatments were set up: control (CK, sprayed with 75% chlorothalonil), Bacillus subtilis (BS), and Trichoderma (TH). A cutting experiment was conducted, combined with amplicon, metagenomic and metabolomic sequencing, to analyze the effects of different treatments on cutting rooting and the diversity of rhizosphere and endophytic microbes of Chamelaucium ciliatum. The results showed that the rooting rate of the BS group was the highest (85.94%), which was 27.35% higher than that of the CK group (58.59%). The average root weight per plant of the TH group was the largest (112.34 mg), increased by 28.19% compared with the CK group (87.63 mg). Moreover, the root systems in the BS and TH groups were fresher and stronger, without yellow-brown roots or deformed roots. Microbial community analysis showed that the relative abundances of Proteobacteria (77.75%), Bacteroidetes (4.20%) and Firmicutes (1.98%) in root endophytic bacteria of the BS group were significantly higher than those in the CK group, and growth-promoting and stress-resistant functional bacteria such as Acidimicrobiales and Bradyrhizobium were enriched. The number of OTUs of rhizosphere microorganisms in the TH group reached 2821, with 559 unique groups, showing the highest diversity. Metabolomic analysis revealed that purine metabolism-related substances such as deoxyadenosine were significantly enriched in the BS group, while alanine-aspartate-glutamate metabolism-related substances such as L-glutamine were significantly enriched in the TH group. The proportions of polypeptide substances in the two groups (91.50% in BS and 95.47% in TH) were both higher than that in the CK group (91.15%). In conclusion, Bacillus subtilis and Trichoderma can significantly improve the cutting rooting effect of Chamelaucium ciliatum by regulating the community structure of rhizosphere and endophytic microbes and optimizing root metabolic pathways. Among them, Bacillus subtilis has more prominent advantages in increasing the rooting rate, and has important application potential in the efficient cutting propagation of Chamelaucium ciliatum.

Key words: Chamelaucium ciliatum, cutting rooting, Bacillus subtilis, Trichoderma, rhizosphere microorganisms, metabolome

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