A Polyphasic Approach Reveals Novel Genotypes and Updates the Genetic Structure of the Banana Fusarium Wilt Pathogen
文献类型： 外文期刊
作者： Mostert, Diane 1 ; Wicker, Emmanuel 2 ; de Jager, Mignon M. 1 ; Al Kaabi, Saif M. 1 ; O'Neill, Wayne T. 5 ; Perry, Suzy 5 ; Li, Chunyu 6 ; Yi Ganyun 6 ; Pegg, Kenneth G. 5 ; Mostert, Lizel 1 ; Viljoen, Altus 1 ;
作者机构： 1.Stellenbosch Univ, Dept Plant Pathol, ZA-7600 Stellenbosch, South Africa
2.CIRAD, UMR PHIM, F-34398 Montpellier, France
3.Univ Montpellier, CIRAD, Plant Hlth Inst Montpellier, F-34398 Montpellier, France
4.Minist Agr & Fisheries, Ghadafan Agr Res Stn, Seeb 121, Oman
5.Ecosci Precinct, Dept Agr & Fisheries, Brisbane, Qld 4102, Australia
6.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510640, Peoples R China
关键词： banana Fusarium wilt; diversity array technology; phylogeny; secreted in xylem genes; vegetative compatibility
期刊名称：MICROORGANISMS （ 影响因子：4.926； 五年影响因子：5.143 ）
ISSN：
年卷期： 2022 年 10 卷 2 期
页码：
收录情况： SCI
摘要： Fusarium oxysporum f. sp. cubense (Foc) is a soil-borne fungus that causes Fusarium wilt, a destructive plant disease that has resulted in devastating economic losses to banana production worldwide. The fungus has a complex evolutionary history and taxonomic repute and consists of three pathogenic races and at least 24 vegetative compatibility groups (VCGs). Surveys conducted in Asia, Africa, the Sultanate of Oman and Mauritius encountered isolates of F. oxysporum pathogenic to banana that were not compatible to any of the known Foc VCGs. Genetic relatedness between the undescribed and known Foc VCGs were determined using a multi-gene phylogeny and diversity array technology (DArT) sequencing. The presence of putative effector genes, the secreted in xylem (SIX) genes, were also determined. Fourteen novel Foc VCGs and 17 single-member VCGs were identified. The multi-gene tree was congruent with the DArT-seq phylogeny and divided the novel VCGs into three clades. Clustering analysis of the DArT-seq data supported the separation of Foc isolates into eight distinct clusters, with the suite of SIX genes mostly conserved within these clusters. Results from this study indicates that Foc is more diverse than hitherto assumed.
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