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Whole Genome Sequencing and Biocontrol Potential of Streptomyces luteireticuli ASG80 Against Phytophthora Diseases

文献类型： 外文期刊

作者： Xu, Gang 1 ; Wu, Weihuai 2 ; Zhu, Liqian 2 ; Liang, Yanqiong 2 ; Liang, Minli 2 ; Tan, Shibei 2 ; Chen, Helong 2 ; Huang, Xing 2 ; He, Chunping 2 ; Lu, Ying 2 ; Yi, Kexian 2 ; Ma, Xiang 1 ;

作者机构： 1.Hainan Univ, Collaborat Innovat Ctr One Hlth, Pathogenesis & Control Pathogen Microorganisms Res, Hainan Prov Key Lab One Hlth,Sch Life & Hlth Sci, Haikou 570228, Peoples R China

2.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Hainan Key Lab Monitoring & Control Trop Agr Pests, Haikou 571101, Peoples R China

3.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Peoples R China

4.Chinese Acad Trop Agr Sci, Sanya Res Inst, Sanya 572025, Peoples R China

关键词： Phytophthora; Streptomyces; antimicrobial activity; biocontrol agent; whole genome sequencing

期刊名称：MICROORGANISMS （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN：

年卷期： 2024 年 12 卷 11 期

页码：

收录情况： SCI

摘要： Phytophthora-induced crop diseases, commonly known as "plant plagues", pose a significant threat to global food security. In this study, strain ASG80 was isolated from sisal roots and demonstrated a broad-spectrum antagonistic activity against several Phytophthora species and fungal pathogens. Strain ASG80 was identified as Streptomyces luteireticuli via phylogenetic analysis, digital DNA-DNA hybridization (dDDH), and average nucleotide identity (ANI). Whole-genome sequencing identified 40 biosynthetic gene clusters (BGCs) related to secondary metabolite production, including antimicrobial compounds. Strain ASG80 extract exhibited broad-spectrum inhibitory activity against Phytophthora nicotianae, P. vignae, P. cinnamomi, and P. sojae. Pot experiments showed that strain ASG80 extract significantly reduced sisal zebra disease incidence, with an efficacy comparable to the fungicide metalaxyl. These findings suggest that strain ASG80 is a promising biocontrol agent with substantial potential for managing Phytophthora-related diseases in agriculture.

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