Biological Control of Fusarium oxysporum f. sp. cubense Tropical Race 4 in Banana Plantlets Using Newly Isolated Streptomyces sp. WHL7 from Marine Soft Coral
文献类型： 外文期刊
作者： Wang, Jie 1 ; Cai, Bingyu 1 ; Li, Kai 3 ; Zhao, Yankun 3 ; Li, Chunyu 4 ; Liu, Siwen 4 ; Xiang, Dandan 4 ; Zhang, Lu 2 ; Xie, Jianghui 3 ; Wang, Wei 3 ;
作者机构： 1.Hainan Univ, Haikou 570228, Hainan, Peoples R China
2.Hainan Normal Univ, Coll Life Sci, Minist Educ,Key Lab Ecol Trop Isl, Key Lab Trop Anim & Plant Ecol Hainan Prov, Haikou 571158, Hainan, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Minist Agr, Haikou 571101, Hainan, Peoples R China
4.Guangdong Acad Agr Sci, Inst Fruit Tree Res,Minist Agr, Key Lab South Subtrop Fruit Biol & Genet Resource, Key Lab Trop & Subtrop Fruit Tree Res Guangdong P, Guangzhou 510640, Guangdong, Peoples R China
关键词： antifungal mechanism; banana Fusarium wilt; biocontrol; Streptomyces
期刊名称：PLANT DISEASE （ 影响因子：4.614； 五年影响因子：5.33 ）
ISSN： 0191-2917
年卷期： 2022 年 106 卷 1 期
页码：
收录情况： SCI
摘要： Banana Fusarium wilt caused by Fusarium oxysporum f. sp. cubense is a disastrous fungal disease. Foc tropical race 4 (Foc TR4) infects almost all banana cultivars. Use of chemical fungicides caused serious environment pollution. Biological control with antagonistic microbes is a promising strategy for controlling Foc TR4. Here, strain WHL7 isolated from marine soft coral exhibited a high antifungal activity against Foc TR4. Based on the morphological and physicochemical profiles as well as the phylogenetic tree, the strain was assigned to Streptomyces sp. Fermentation broth of Streptomyces sp. WHL7 significantly increased the resistance of banana plantlets to Foc TR4 in the pot experiment. Analysis of antifungal mechanism showed that strain WHL7 extracts inhibited spore germination and mycelial growth of Foc TR4, and destroyed cell integrity and ultrastructure. Hence, Streptomyces sp. WHL7 is an important bioresource for exploring novel natural products and biofertilizer to manage Foc TR4.
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