Genetic diversity of the banana Fusarium wilt pathogen in Cuba and across Latin America and the Caribbean,Environmental Microbiology

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Genetic diversity of the banana Fusarium wilt pathogen in Cuba and across Latin America and the Caribbean
Environmental Microbiology ( IF 4.3 ) Pub Date : 2024-05-24 , DOI: 10.1111/1462-2920.16636
Einar Martínez-de la Parte _{1,

2} , Luis Pérez-Vicente ₂ , David E Torres _{1,

3} , Anouk van Westerhoven _{1,

3} , Harold J G Meijer ₄ , Michael F Seidl ₃ , Gert H J Kema ₁

Affiliation

Fusarium wilt of bananas (FWB) is a severe plant disease that leads to substantial losses in banana production worldwide. It remains a major concern for Cuban banana cultivation. The disease is caused by members of the soil‐borne Fusarium oxysporum species complex. However, the genetic diversity among Fusarium species infecting bananas in Cuba has remained largely unexplored. In our comprehensive survey, we examined symptomatic banana plants across all production zones in the country, collecting 170 Fusarium isolates. Leveraging genotyping‐by‐sequencing and whole‐genome comparisons, we investigated the genetic diversity within these isolates and compared it with a global Fusarium panel. Notably, typical FWB symptoms were observed in Bluggoe cooking bananas and Pisang Awak subgroups across 14 provinces. Our phylogenetic analysis revealed that F. purpurascens, F. phialophorum, and F. tardichlamydosporum are responsible for FWB in Cuba, with F. tardichlamydosporum dominating the population. Furthermore, we identified between five and seven distinct genetic clusters, with F. tardichlamydosporum isolates forming at least two subgroups. This finding underscores the high genetic diversity of Fusarium spp. contributing to FWB in the Americas. Our study sheds light on the population genetic structure and diversity of the FWB pathogen in Cuba and the broader Latin American and Caribbean regions.

中文翻译：

古巴以及整个拉丁美洲和加勒比地区香蕉枯萎病病原体的遗传多样性

香蕉枯萎病 (FWB) 是一种严重的植物病害，导致全世界香蕉生产遭受重大损失。这仍然是古巴香蕉种植的一个主要问题。该病害是由土传微生物引起的尖孢镰刀菌物种复杂。然而，遗传多样性镰刀菌属感染古巴香蕉的物种基本上仍未被探索。在我们的综合调查中，我们检查了全国所有产区有症状的香蕉植株，收集了 170 株香蕉植株。镰刀菌属隔离。利用测序基因分型和全基因组比较，我们研究了这些分离株的遗传多样性，并将其与全球菌株进行比较。镰刀菌属控制板。值得注意的是，在 14 个省的 Bluggoe 烹饪香蕉和 Pisang Awak 亚群中观察到了典型的 FWB 症状。我们的系统发育分析表明紫星镰刀菌,瓶口镰刀菌，和迟衣孢镰刀菌负责古巴的 FWB，迟衣孢镰刀菌统治人口。此外，我们还确定了五到七个不同的基因簇，其中迟衣孢镰刀菌分离物形成至少两个亚组。这一发现强调了基因的高度多样性镰刀菌属种。为美洲的 FWB 做出贡献。我们的研究揭示了古巴以及更广泛的拉丁美洲和加勒比地区 FWB 病原体的群体遗传结构和多样性。

更新日期：2024-05-24

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