Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)

One-hundred and forty isolates of Sclerotinia sclerotiorum (Lib.) DeBary were obtained in a 6500-km2 area of the Buenos Aires Province. These isolates were collected from soybean (60 isolates), lettuce (59 isolates) and sunflower (21 isolates) fields. Fifty different mycelial compatibility groups (M...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Durman, S.B., Menéndez, A.B., Godeas, A.M.
Formato: JOUR
Materias:
fungus
morphology
species diversity
Argentina
Apium graveolens var. dulce
Fungi
Glycine max
Helianthus
Lactuca
Sclerotinia
Sclerotinia sclerotiorum
Sclerotiniaceae
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00671924_v51_n4_p421_Durman
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00671924_v51_n4_p421_Durman
record_format dspace
spelling todo:paper_00671924_v51_n4_p421_Durman2023-10-03T14:53:10Z Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae) Durman, S.B. Menéndez, A.B. Godeas, A.M. fungus morphology species diversity Argentina Apium graveolens var. dulce Fungi Glycine max Helianthus Lactuca Sclerotinia Sclerotinia sclerotiorum Sclerotiniaceae One-hundred and forty isolates of Sclerotinia sclerotiorum (Lib.) DeBary were obtained in a 6500-km2 area of the Buenos Aires Province. These isolates were collected from soybean (60 isolates), lettuce (59 isolates) and sunflower (21 isolates) fields. Fifty different mycelial compatibility groups (MCGs) were distinguished overall, 27 of which consisted of two or more isolates. Populations of S. sclerotiorum were made up by numerous MCGs and shared a similar frequency profile regardless the locality or the date of sampling. MCG occurrences differed among the crops, only two MCGs were shared by the three crops and approximately 60% of the MCGs were unique for each crop. The Shannon diversity index (Ho) of MCG for the whole region was 0.314 (Htot). Partition of total diversity (Htot) showed that 98.4% corresponded to variations of diversity within populations. Morphological characteristics were not significantly different among MCGs, except for the dry weight per sclerotium. On the basis of the detached celery petiole assay, there were no differences in aggressiveness between MCGs either. However, isolates collected from sunflower plants were more aggressive than those collected from soybean, regardless the MCG they belonged. Aggressiveness was positively correlated to colony radial growth. After principal component analyses (PCA) were performed, it could be identified a main central group of isolates and two other smaller groups. Main contributors to the total variance were the percentages of large sclerotia, the dry weight per sclerotium and the percentages of medium and small sclerotia. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00671924_v51_n4_p421_Durman
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic fungus
morphology
species diversity
Argentina
Apium graveolens var. dulce
Fungi
Glycine max
Helianthus
Lactuca
Sclerotinia
Sclerotinia sclerotiorum
Sclerotiniaceae
spellingShingle fungus
morphology
species diversity
Argentina
Apium graveolens var. dulce
Fungi
Glycine max
Helianthus
Lactuca
Sclerotinia
Sclerotinia sclerotiorum
Sclerotiniaceae
Durman, S.B.
Menéndez, A.B.
Godeas, A.M.
Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
topic_facet fungus
morphology
species diversity
Argentina
Apium graveolens var. dulce
Fungi
Glycine max
Helianthus
Lactuca
Sclerotinia
Sclerotinia sclerotiorum
Sclerotiniaceae
description One-hundred and forty isolates of Sclerotinia sclerotiorum (Lib.) DeBary were obtained in a 6500-km2 area of the Buenos Aires Province. These isolates were collected from soybean (60 isolates), lettuce (59 isolates) and sunflower (21 isolates) fields. Fifty different mycelial compatibility groups (MCGs) were distinguished overall, 27 of which consisted of two or more isolates. Populations of S. sclerotiorum were made up by numerous MCGs and shared a similar frequency profile regardless the locality or the date of sampling. MCG occurrences differed among the crops, only two MCGs were shared by the three crops and approximately 60% of the MCGs were unique for each crop. The Shannon diversity index (Ho) of MCG for the whole region was 0.314 (Htot). Partition of total diversity (Htot) showed that 98.4% corresponded to variations of diversity within populations. Morphological characteristics were not significantly different among MCGs, except for the dry weight per sclerotium. On the basis of the detached celery petiole assay, there were no differences in aggressiveness between MCGs either. However, isolates collected from sunflower plants were more aggressive than those collected from soybean, regardless the MCG they belonged. Aggressiveness was positively correlated to colony radial growth. After principal component analyses (PCA) were performed, it could be identified a main central group of isolates and two other smaller groups. Main contributors to the total variance were the percentages of large sclerotia, the dry weight per sclerotium and the percentages of medium and small sclerotia.
format JOUR
author Durman, S.B.
Menéndez, A.B.
Godeas, A.M.
author_facet Durman, S.B.
Menéndez, A.B.
Godeas, A.M.
author_sort Durman, S.B.
title Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
title_short Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
title_full Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
title_fullStr Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
title_full_unstemmed Mycelial compatibility groups in Buenos Aires field populations of Sclerotinia sclerotiorum (Sclerotiniaceae)
title_sort mycelial compatibility groups in buenos aires field populations of sclerotinia sclerotiorum (sclerotiniaceae)
url http://hdl.handle.net/20.500.12110/paper_00671924_v51_n4_p421_Durman
work_keys_str_mv AT durmansb mycelialcompatibilitygroupsinbuenosairesfieldpopulationsofsclerotiniasclerotiorumsclerotiniaceae
AT menendezab mycelialcompatibilitygroupsinbuenosairesfieldpopulationsofsclerotiniasclerotiorumsclerotiniaceae
AT godeasam mycelialcompatibilitygroupsinbuenosairesfieldpopulationsofsclerotiniasclerotiorumsclerotiniaceae
_version_ 1807321280819494912

Ejemplares similares