AI Article Synopsis
- The study focuses on the causes of brown spot needle blight (BSNB) linked to a pathogen believed to originate from Central America, based on morphological differences seen in various isolates.
- Recent phylogenetic analyses identified six species of the pathogen, including four new species from Guatemala, Nicaragua, and Honduras, highlighting the area as a center for diversity within the genus.
- Additionally, new host and country records were documented, while a previously speculated native pathogen was not detected, suggesting it may exist in northern regions instead.
Article Abstract
causes the disease known as brown spot needle blight (BSNB), on species. The pathogen is thought to have a Central American centre of origin. This was based on the morphological variation between isolates believed to represent from native spp. Two species of , and , have recently been described from Mexico and Guatemala respectively based on morphology and sequence-derived phylogenetic inference. However, the putative native pathogen, was not found in those areas. In this study, the species diversity of a large collection of isolates from Central America was considered. Phylogenetic analyses of the 1, ITS, , 2 and 1 gene regions revealed six species of , four of which represented undescribed taxa. These are described here as sp. nov. from Guatemala and Nicaragua, sp. nov. from Guatemala and Honduras, sp. nov. from Guatemala and sp. nov. from Guatemala, Honduras, and Mexico. New host and country records were also found for the previously described and was not found in any of the samples from Central America, and we hypothesize that it could be a northern hemisphere taxon. The high species diversity of found in Mesoamerica suggests that this is a centre of diversity for the genus.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7325671 | PMC |
| http://dx.doi.org/10.1186/s43008-019-0004-8 | DOI Listing |
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