New Geographical Insights of the Latest Expansion of Fusarium oxysporum f. sp cubense Tropical Race 4 Into the Greater Mekong Subregion

文献类型： 外文期刊

第一作者： Zheng, Si-Jun

作者： Zheng, Si-Jun;Li, Xundong;Zeng, Li;Bai, Tingting;Xu, Shengtao;Yin, Kesuo;Zheng, Si-Jun;Garcia-Bastidas, Fernando A.;Meijer, Harold J. G.;Kema, Gert H. J.;Garcia-Bastidas, Fernando A.;Seidl, Michael F.;Kema, Gert H. J.;Li, Hongxiang;Fu, Gang;Yu, Yanchun;Yang, Liu;Huy Chung Nguyen;Douangboupha, Bounneuang;Khaing, Aye Aye;Drenth, Andre

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关键词： Laos; Myanmar; Vietnam; China; Fusarium wilt; single nucleotide polymorphism (SNP); phytogeography; The Greater Mekong Subregion (GMS)

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2018 年 9 卷

页码：

收录情况： SCI

摘要： Banana is the most popular and most exported fruit and also a major food crop for millions of people around the world. Despite its importance and the presence of serious disease threats, research into this crop is limited. One of those is Panama disease or Fusarium wilt. In the previous century Fusarium wilt wiped out the "Gros Michel" based banana industry in Central America. The epidemic was eventually quenched by planting "Cavendish" bananas. However, 50 years ago the disease recurred, but now on "Cavendish" bananas. Since then the disease has spread across South-East Asia, to the Middle-East and the Indian subcontinent and leaped into Africa. Here, we report the presence of Fusariumoxysporumf. sp. cubense Tropical Race 4 (Foc TR4) in "Cavendish" plantations in Laos, Myanmar, and Vietnam. A combination of classical morphology, DNA sequencing, and phenotyping assays revealed a very close relationship between the Foc TR4 strains in the entire Greater Mekong Subregion (GMS), which is increasingly prone to intensive banana production. Analyses of single-nucleotide polymorphisms enabled us to initiate a phylogeography of Foc TR4 across three geographical areas-GMS, Indian subcontinent, and the Middle East revealing three distinct Foc TR4 sub-lineages. Collectively, our data place these new incursions in a broader agroecological context and underscore the need for awareness campaigns and the implementation of validated quarantine measures to prevent further international dissemination of Foc TR4.

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