Scholarlink

<p><i>Moniliophthora perniciosa</i> C-biotype is the causal agent of witches’ broom disease of cacao (WBD), one of the most important diseases of the crop in Peru. Several questions remain unanswered about this disease in the country, such as the incidence levels, the morphological and genetic diversity, and the dissemination routes of the pathogen. We evaluated fifty isolates from districts located in areas of “Difficult Access” deep in the Amazon, and of “Easy Access” close to urban areas on the Western side of the Amazon. We found higher incidence levels of WBD in districts with historical records of high humidity and precipitation. We also found significant differences in the radial growth of isolates and documented nine mycelial colony growth groups with a varying presence of clamp connections. The microsatellite marker genotyping revealed the highest indexes of diversity in areas of “Difficult Access” and identified these Amazonian areas harbored the ancestral population of <i>M. perniciosa</i> from which the pathogen most likely disseminated towards the “Easy Access” areas. This study lays the foundation for future studies to fully understand the morphological and genetic diversity, and epidemiology of <i>M. perniciosa</i> in the northern Peruvian Amazon.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Amazonian dissemination routes and genetic diversity of Moniliophthora perniciosa C-biotype in Northern Peru

  • 期刊论文

  • 发表日期：

    2025年9月5日

查看全文
  • Tito A. Ramos-Carrasco,
  • Ingrid M. Iliquin-Inga,
  • M. Catherine Aime,
  • Santos T. Leiva-Espinoza,
  • Segundo M. Oliva-Cruz,
  • Jorge R. Díaz-Valderrama

摘要

Moniliophthora perniciosa C-biotype is the causal agent of witches’ broom disease of cacao (WBD), one of the most important diseases of the crop in Peru. Several questions remain unanswered about this disease in the country, such as the incidence levels, the morphological and genetic diversity, and the dissemination routes of the pathogen. We evaluated fifty isolates from districts located in areas of “Difficult Access” deep in the Amazon, and of “Easy Access” close to urban areas on the Western side of the Amazon. We found higher incidence levels of WBD in districts with historical records of high humidity and precipitation. We also found significant differences in the radial growth of isolates and documented nine mycelial colony growth groups with a varying presence of clamp connections. The microsatellite marker genotyping revealed the highest indexes of diversity in areas of “Difficult Access” and identified these Amazonian areas harbored the ancestral population of M. perniciosa from which the pathogen most likely disseminated towards the “Easy Access” areas. This study lays the foundation for future studies to fully understand the morphological and genetic diversity, and epidemiology of M. perniciosa in the northern Peruvian Amazon.