@ARTICLE{TreeBASE2Ref27617,
author = {Leilani Galdones Sumabat and Robert Kemerait and Marin Talbot Brewer},
title = {Phylogenetic diversity and host specialization of Corynespora cassiicola causing emerging diseases on cotton and other crops in the southeastern U.S.},
year = {2017},
keywords = {target spot, cotton, Corynespora cassiicola, host specialization},
doi = {},
url = {http://},
pmid = {},
journal = {Phytopathology},
volume = {},
number = {},
pages = {},
abstract = {Corynespora cassiicola is a ubiquitous fungal pathogen causing emerging plant diseases worldwide, including target spot of cotton, which has rapidly increased in incidence and severity throughout the southeastern U.S. Target spot has also increased on tomato and soybean within the same region. Our objective is to understand target spot emergence by comparing phylogenetic relationships of isolates from cotton with other hosts, and to determine their host range. Fifty-three C. cassiicola isolates were sampled from different hosts in the southeastern U.S. and 1380 nucleotides were sequenced. Across four loci, C. cassiicola showed significant clusters based on host of origin, irrespective of geographic location. On cotton, no genetic diversity among isolates was identified and showed them to be genetically distinct from isolates of different hosts of origin. Furthermore, pathogenicity and virulence testing of 40 isolates from various hosts on cotton, soybean, tomato, and cucumber cultivars showed significant differences in severity and incidence. Isolates originally from cotton were more aggressive on cotton than those from other hosts. Also, soybean and tomato were most susceptible only to isolates that originated from the same host, providing evidence of host specialization. These results suggest that emerging epidemics in the U.S. are caused by either, introduction of host-specific isolates or the evolution of more aggressive strains on each host.}
}
Trees for Study 21566
Citation title:
"Phylogenetic diversity and host specialization of Corynespora cassiicola causing emerging diseases on cotton and other crops in the southeastern U.S.".
Study name:
"Phylogenetic diversity and host specialization of Corynespora cassiicola causing emerging diseases on cotton and other crops in the southeastern U.S.".
This study is part of submission 21566
(Status: Published).
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