Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam

Fusarium basal rot (FBR) is particularly problematic to Allium producers worldwide. In Vietnam, information on the profile of FBR is scarce, even though the presence of Fusarium spp. in Allium plants has long been recorded. In this study, a total of 180 isolates of Fusarium spp. were recovered from...

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Tác giả chính: Lê, Dũng
Định dạng: Journal article
Ngôn ngữ:English
Được phát hành: The American Phytopathological Society (APS) 2023
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Truy cập trực tuyến:https://scholar.dlu.edu.vn/handle/123456789/2509
https://doi.org/10.1094/PDIS-08-20-1850-RE
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Thư viện lưu trữ: Thư viện Trường Đại học Đà Lạt
id oai:scholar.dlu.edu.vn:123456789-2509
record_format dspace
institution Thư viện Trường Đại học Đà Lạt
collection Thư viện số
language English
topic Allium
Fusarium basal rot
virulence variability
LC MS/MS
Mycotoxin
spellingShingle Allium
Fusarium basal rot
virulence variability
LC MS/MS
Mycotoxin
Lê, Dũng
Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
description Fusarium basal rot (FBR) is particularly problematic to Allium producers worldwide. In Vietnam, information on the profile of FBR is scarce, even though the presence of Fusarium spp. in Allium plants has long been recorded. In this study, a total of 180 isolates of Fusarium spp. were recovered from Allium bulbs/plants showing symptoms of FBR in 34 commercial Allium fields around Da Lat, Lam Dong, Vietnam. These isolates were identified to the species level by sequencing the internal transcribed spacer region and the translation elongation factor 1α gene. F. oxysporum was most prevalent (81%) in samples from all locations and Allium varieties, followed by F. solani (15%) and F. proliferatum (4%), which were only found in onion (Allium cepa L.). Pathogenicity tests on onion seedlings (56 isolates) and mini bulbs (10 isolates) indicated that onion can be infected by all of these species but virulence varied greatly between isolates. Moreover, isolates that were virulent on seedlings were sometimes not virulent on bulbs and vice versa, which points to a specialization of isolates for the host phenology. Mycotoxin analyses showed that the highest amounts of beauvericin were detected in seedlings and bulbs infected by F. oxysporum, whereas F. proliferatum was mainly responsible for the presence of fumonisin B1 in bulbs, suggesting a natural occurrence of beauvericin and fumonisin B1 in onions infected by these pathogens.
format Journal article
author Lê, Dũng
author_facet Lê, Dũng
author_sort Lê, Dũng
title Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
title_short Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
title_full Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
title_fullStr Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
title_full_unstemmed Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam
title_sort population, virulence, and mycotoxin profile of fusarium spp. associated with basal rot of allium spp. in vietnam
publisher The American Phytopathological Society (APS)
publishDate 2023
url https://scholar.dlu.edu.vn/handle/123456789/2509
https://doi.org/10.1094/PDIS-08-20-1850-RE
_version_ 1785973143096000512
spelling oai:scholar.dlu.edu.vn:123456789-25092023-12-13T03:44:34Z Population, Virulence, and Mycotoxin Profile of Fusarium spp. Associated With Basal Rot of Allium spp. in Vietnam Lê, Dũng Allium Fusarium basal rot virulence variability LC MS/MS Mycotoxin Fusarium basal rot (FBR) is particularly problematic to Allium producers worldwide. In Vietnam, information on the profile of FBR is scarce, even though the presence of Fusarium spp. in Allium plants has long been recorded. In this study, a total of 180 isolates of Fusarium spp. were recovered from Allium bulbs/plants showing symptoms of FBR in 34 commercial Allium fields around Da Lat, Lam Dong, Vietnam. These isolates were identified to the species level by sequencing the internal transcribed spacer region and the translation elongation factor 1α gene. F. oxysporum was most prevalent (81%) in samples from all locations and Allium varieties, followed by F. solani (15%) and F. proliferatum (4%), which were only found in onion (Allium cepa L.). Pathogenicity tests on onion seedlings (56 isolates) and mini bulbs (10 isolates) indicated that onion can be infected by all of these species but virulence varied greatly between isolates. Moreover, isolates that were virulent on seedlings were sometimes not virulent on bulbs and vice versa, which points to a specialization of isolates for the host phenology. Mycotoxin analyses showed that the highest amounts of beauvericin were detected in seedlings and bulbs infected by F. oxysporum, whereas F. proliferatum was mainly responsible for the presence of fumonisin B1 in bulbs, suggesting a natural occurrence of beauvericin and fumonisin B1 in onions infected by these pathogens. 105 07 1942--1950 2023-06-10T01:51:28Z 2023-06-10T01:51:28Z 2021 Journal article Bài báo đăng trên tạp chí thuộc ISI, bao gồm book chapter https://scholar.dlu.edu.vn/handle/123456789/2509 https://doi.org/10.1094/PDIS-08-20-1850-RE en Plant Disease Abawi, G. S., and Lorbeer, J. W. 1971. Pathological histology of four onion cultivars infected by Fusarium oxysporum f. sp. cepae. Phytopathology 61:1164-1169. Crossref, Google Scholar Audenaert, K., Van Broeck, R., Bekaert, B., De Witte, F., Heremans, B., Messens, K., Höfte, M., and Haesaert, G. 2009. 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