Đánh giá khả năng kháng một số nấm bệnh thực vật của chủng xạ khuẩn Streptomyces murinus XKH6 phân lập từ đất trồng nghệ tại Hưng Yên=Assessment of the antifungal activity against plant pathogens of the Streptomyces murinus XKH6 strain isolated from soil growing Curcuma longa in Hung Yen province

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Tác giả: Thanh Bình Chu

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Việt Nam, 2024

Mô tả vật lý: tr.55-60

Bộ sưu tập: Metadata

ID: 478393

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Streptomyces are evaluated to have strong antagonistic abilities against many species of plant pathogenic fungi. Species of the Streptomyces genus are commonly applied in the creation of biological products used in the control of agricultural diseases. In this article, from 6 actinomycete strains isolated from turmeric-growing soil in Hung Yen province, the XKH6 strain was selected for its simultaneous antifungal activity against five plant pathogenic fungi: Penicillium digitatum, Colletotrichum gloeosporioides, Aspergillus niger, Fusarium oxysporum, and Aspergillus flavus. Notably, the broth cultures of the XKH6 strain 100% effectively controlled the P. digitatum, C. gloeosporioides, and A. niger on artificial infection of orange and apple. Based on morphological characteristics and 16S rRNA sequence, the XKH6 strain was identified as belonging to the species Streptomyces murinus. XKH6 has 100% similarity with S. murinus on GenBank. The S. murinus XKH6 strain has the potential for application in the development of biological products for the control of the P. digitatum, C. gloeosporioides, and A. niger that cause crop diseases.Xạ khuẩn Streptomyces được đánh giá có hoạt tính kháng nhiều loài vi nấm gây bệnh cây trồng. Các loài xạ khuẩn thuộc chi Streptomyces thường được ứng dụng tạo chế phẩm sinh học dùng kiểm soát bệnh hại trong nông nghiệp. Trong bài báo này, từ 6 chủng xạ khuẩn phân lập từ đất trồng nghệ tại Hưng Yên đã lựa chọn được chủng xạ khuẩn XKH6 có hoạt tính kháng đồng thời 5 loài nấm bệnh thực vật gồm Penicillium digitatum, Colletotrichum gloeosporioides, Aspergillus niger, Fusarium oxysporum và Aspergillus flavus. Đặc biệt, dịch nuôi cấy chủng xạ khuẩn XKH6 kiểm soát 100% khả năng gây bệnh của 3 loài nấm P. digitatum, C. gloeosporioides, A. niger khi lây nhiễm nhân tạo trên quả cam và táo. Chủng XKH6 được định danh thuộc loài Streptomyces murinus dựa vào đặc điểm về hình thái và phân tích trình tự gen 16S rRNA. XKH6 có độ tương đồng là 100% khi so sánh trên GenBank. Chủng S. murinus XKH6 có triển vọng trong phát triển chế phẩm vi sinh kiểm soát P. digitatum, A. niger, C. gloeosporioides gây bệnh cây trồng.

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