1. Spatial and Temporal Genetic Diversity and Population Structure of Hemileia vastatrix from Peruvian Coffee Plantations
- Author
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Giovanni Bernacchia, Cinthia Quispe-Apaza, Roberto Mansilla-Samaniego, Rosa Espejo-Joya, Marisela Yabar-Larios, and César López-Bonilla
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0106 biological sciences ,Demographic history ,Population ,01 natural sciences ,Intraspecific competition ,Nucleotide diversity ,genetic variability ,Peru ,Genetic variability ,education ,Hemileia vastatrix ,purl.org/pe-repo/ocde/ford#2.03.04 [https] ,education.field_of_study ,Genetic diversity ,biology ,Phylogenetic tree ,fungus ,demographic history ,biology.organism_classification ,Coffee leaf rust ,Fungus ,010602 entomology ,Evolutionary biology ,coffee leaf rust ,Agronomy and Crop Science ,Research Article ,010606 plant biology & botany - Abstract
Population genetic studies of Hemileia vastatrix have been conducted in order to describe the evolutionary dynamics of the pathogen and the disease epidemiology as consequence of changes in disease management and host distribution occurred in Peru after the 2013 epidemic. These analyses were performed by sequencing the internal transcribed spacers of the nuclear ribosomal DNA (rDNA-ITS) of H. vastatrix collected from two coffee growing areas in 2014 and 2018. H. vastatrix population showed high haplotype diversity (Hd = 0.9373 ± 0.0115) with a low nucleotide diversity (π = 0.00322 ± 0.00018). Likewise, AMOVA indicated that fungus population has behaved as a large population without structuring by geographical origin and sampling years (FST = 0.00180, P = 0.20053 and FST = 0.00241, P = 0.19693, respectively). Additionally, the haplotype network based on intraspecific phylogenetic analysis of H. vastatrix using Peruvian and NCBI sequences revealed that Peruvian ancestral haplotypes, which were maintained in time and space, would correspond to the reported sequences of the races II and XXII. This re-sult suggests that no substantial changes have occurred through time in Peruvian Hemileia vastatrix population. © 2021, Korean Society of Plant Pathology. All rights reserved. This research was supported by project N? 177-2015 FONDECYT (The National Fund for Scientific and Technological Development) and Universidad Nacional Agraria La Molina, Peru.
- Published
- 2021
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