Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose
Background: Colletotrichum truncatum is the most common pathogenic fungus associated with soybean anthracnose, a prevalent disease in Argentina. Pectinolytic enzymes are involved in the pathogenicity of a wide range of plant pathogenic fungi. Objectives: To explore pectinolytic enzyme production in Argentinian Colletotrichum strains isolated from diseased soybean plants from different geographic locations, as a preliminary step to establish the biological role of the pectinolytic enzymes in the Colletotrichum spp.-soybean system, yet unknown. Methods: Ten strains were screened for in vitro pectinolytic enzyme production on a defined medium based on pectin as carbon source. Results: All isolates were able to grow in this medium and polymethylgalacturonase [PMG], polygalacturonase [PG] and pectin lyase [PL] activities were detected. On the whole, the peak of polygalacturonases activities preceded the day of maximum growth, while PL activity reached its highest level afterwards. Strain BAFC 3097 [from Santa Fe province] yielded high titles of the three enzymes [1.08. U/ml PG, 1.05. U/ml PMG, 156. U/ml PL], after a short incubation period [7-10 days]. Low synthesis of polygalacturonases in cultures containing glucose as unique carbon source suggests that these enzymes are constitutive in contrast with PL, which was not detected. Conclusions: The disparity observed in enzyme production among strains cannot be related to fungal growth, since no major differences in mycelial yield were found; it was not connected with their geographic origin, but might be associated with differences in virulence among strains not yet evaluated.
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Subjects: | ANTHRACNOSE, COLLETOTRICHUM TRUNCATUM, PECTINOLYTIC ENZYMES, SOYBEAN, PECTIN, PECTIN LYASE, POLYGALACTURONASE, COLLETOTRICHUM, CONTROLLED STUDY, CULTURE MEDIUM, ENZYME ACTIVITY, ENZYME SYNTHESIS, FUNGAL STRAIN, FUNGAL VIRULENCE, FUNGUS CULTURE, FUNGUS GROWTH, FUNGUS ISOLATION, GEOGRAPHIC DISTRIBUTION, IN VITRO STUDY, NONHUMAN, PH MEASUREMENT, PLANT PATHOGEN INTERACTION, PECTINS, PLANT DISEASES, SOYBEANS, FUNGI, GLYCINE MAX, |
Online Access: | http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46467 |
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KOHA-OAI-AGRO:464672021-11-26T15:45:34Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46467AAGPectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnoseRamos, Araceli M.Gally, Marcela EdithGarcía, María CeliaLevin, Lauratextengapplication/pdfBackground: Colletotrichum truncatum is the most common pathogenic fungus associated with soybean anthracnose, a prevalent disease in Argentina. Pectinolytic enzymes are involved in the pathogenicity of a wide range of plant pathogenic fungi. Objectives: To explore pectinolytic enzyme production in Argentinian Colletotrichum strains isolated from diseased soybean plants from different geographic locations, as a preliminary step to establish the biological role of the pectinolytic enzymes in the Colletotrichum spp.-soybean system, yet unknown. Methods: Ten strains were screened for in vitro pectinolytic enzyme production on a defined medium based on pectin as carbon source. Results: All isolates were able to grow in this medium and polymethylgalacturonase [PMG], polygalacturonase [PG] and pectin lyase [PL] activities were detected. On the whole, the peak of polygalacturonases activities preceded the day of maximum growth, while PL activity reached its highest level afterwards. Strain BAFC 3097 [from Santa Fe province] yielded high titles of the three enzymes [1.08. U/ml PG, 1.05. U/ml PMG, 156. U/ml PL], after a short incubation period [7-10 days]. Low synthesis of polygalacturonases in cultures containing glucose as unique carbon source suggests that these enzymes are constitutive in contrast with PL, which was not detected. Conclusions: The disparity observed in enzyme production among strains cannot be related to fungal growth, since no major differences in mycelial yield were found; it was not connected with their geographic origin, but might be associated with differences in virulence among strains not yet evaluated.Background: Colletotrichum truncatum is the most common pathogenic fungus associated with soybean anthracnose, a prevalent disease in Argentina. Pectinolytic enzymes are involved in the pathogenicity of a wide range of plant pathogenic fungi. Objectives: To explore pectinolytic enzyme production in Argentinian Colletotrichum strains isolated from diseased soybean plants from different geographic locations, as a preliminary step to establish the biological role of the pectinolytic enzymes in the Colletotrichum spp.-soybean system, yet unknown. Methods: Ten strains were screened for in vitro pectinolytic enzyme production on a defined medium based on pectin as carbon source. Results: All isolates were able to grow in this medium and polymethylgalacturonase [PMG], polygalacturonase [PG] and pectin lyase [PL] activities were detected. On the whole, the peak of polygalacturonases activities preceded the day of maximum growth, while PL activity reached its highest level afterwards. Strain BAFC 3097 [from Santa Fe province] yielded high titles of the three enzymes [1.08. U/ml PG, 1.05. U/ml PMG, 156. U/ml PL], after a short incubation period [7-10 days]. Low synthesis of polygalacturonases in cultures containing glucose as unique carbon source suggests that these enzymes are constitutive in contrast with PL, which was not detected. Conclusions: The disparity observed in enzyme production among strains cannot be related to fungal growth, since no major differences in mycelial yield were found; it was not connected with their geographic origin, but might be associated with differences in virulence among strains not yet evaluated.ANTHRACNOSECOLLETOTRICHUM TRUNCATUMPECTINOLYTIC ENZYMESSOYBEANPECTINPECTIN LYASEPOLYGALACTURONASECOLLETOTRICHUMCONTROLLED STUDYCULTURE MEDIUMENZYME ACTIVITYENZYME SYNTHESISFUNGAL STRAINFUNGAL VIRULENCEFUNGUS CULTUREFUNGUS GROWTHFUNGUS ISOLATIONGEOGRAPHIC DISTRIBUTIONIN VITRO STUDYNONHUMANPH MEASUREMENTPLANT PATHOGEN INTERACTIONCOLLETOTRICHUMPECTINSPLANT DISEASESSOYBEANSFUNGIGLYCINE MAXRevista Iberoamericana de Micología |
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ANTHRACNOSE COLLETOTRICHUM TRUNCATUM PECTINOLYTIC ENZYMES SOYBEAN PECTIN PECTIN LYASE POLYGALACTURONASE COLLETOTRICHUM CONTROLLED STUDY CULTURE MEDIUM ENZYME ACTIVITY ENZYME SYNTHESIS FUNGAL STRAIN FUNGAL VIRULENCE FUNGUS CULTURE FUNGUS GROWTH FUNGUS ISOLATION GEOGRAPHIC DISTRIBUTION IN VITRO STUDY NONHUMAN PH MEASUREMENT PLANT PATHOGEN INTERACTION COLLETOTRICHUM PECTINS PLANT DISEASES SOYBEANS FUNGI GLYCINE MAX ANTHRACNOSE COLLETOTRICHUM TRUNCATUM PECTINOLYTIC ENZYMES SOYBEAN PECTIN PECTIN LYASE POLYGALACTURONASE COLLETOTRICHUM CONTROLLED STUDY CULTURE MEDIUM ENZYME ACTIVITY ENZYME SYNTHESIS FUNGAL STRAIN FUNGAL VIRULENCE FUNGUS CULTURE FUNGUS GROWTH FUNGUS ISOLATION GEOGRAPHIC DISTRIBUTION IN VITRO STUDY NONHUMAN PH MEASUREMENT PLANT PATHOGEN INTERACTION COLLETOTRICHUM PECTINS PLANT DISEASES SOYBEANS FUNGI GLYCINE MAX |
spellingShingle |
ANTHRACNOSE COLLETOTRICHUM TRUNCATUM PECTINOLYTIC ENZYMES SOYBEAN PECTIN PECTIN LYASE POLYGALACTURONASE COLLETOTRICHUM CONTROLLED STUDY CULTURE MEDIUM ENZYME ACTIVITY ENZYME SYNTHESIS FUNGAL STRAIN FUNGAL VIRULENCE FUNGUS CULTURE FUNGUS GROWTH FUNGUS ISOLATION GEOGRAPHIC DISTRIBUTION IN VITRO STUDY NONHUMAN PH MEASUREMENT PLANT PATHOGEN INTERACTION COLLETOTRICHUM PECTINS PLANT DISEASES SOYBEANS FUNGI GLYCINE MAX ANTHRACNOSE COLLETOTRICHUM TRUNCATUM PECTINOLYTIC ENZYMES SOYBEAN PECTIN PECTIN LYASE POLYGALACTURONASE COLLETOTRICHUM CONTROLLED STUDY CULTURE MEDIUM ENZYME ACTIVITY ENZYME SYNTHESIS FUNGAL STRAIN FUNGAL VIRULENCE FUNGUS CULTURE FUNGUS GROWTH FUNGUS ISOLATION GEOGRAPHIC DISTRIBUTION IN VITRO STUDY NONHUMAN PH MEASUREMENT PLANT PATHOGEN INTERACTION COLLETOTRICHUM PECTINS PLANT DISEASES SOYBEANS FUNGI GLYCINE MAX Ramos, Araceli M. Gally, Marcela Edith García, María Celia Levin, Laura Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
description |
Background: Colletotrichum truncatum is the most common pathogenic fungus associated with soybean anthracnose, a prevalent disease in Argentina. Pectinolytic enzymes are involved in the pathogenicity of a wide range of plant pathogenic fungi. Objectives: To explore pectinolytic enzyme production in Argentinian Colletotrichum strains isolated from diseased soybean plants from different geographic locations, as a preliminary step to establish the biological role of the pectinolytic enzymes in the Colletotrichum spp.-soybean system, yet unknown. Methods: Ten strains were screened for in vitro pectinolytic enzyme production on a defined medium based on pectin as carbon source. Results: All isolates were able to grow in this medium and polymethylgalacturonase [PMG], polygalacturonase [PG] and pectin lyase [PL] activities were detected. On the whole, the peak of polygalacturonases activities preceded the day of maximum growth, while PL activity reached its highest level afterwards. Strain BAFC 3097 [from Santa Fe province] yielded high titles of the three enzymes [1.08. U/ml PG, 1.05. U/ml PMG, 156. U/ml PL], after a short incubation period [7-10 days]. Low synthesis of polygalacturonases in cultures containing glucose as unique carbon source suggests that these enzymes are constitutive in contrast with PL, which was not detected. Conclusions: The disparity observed in enzyme production among strains cannot be related to fungal growth, since no major differences in mycelial yield were found; it was not connected with their geographic origin, but might be associated with differences in virulence among strains not yet evaluated. |
format |
Texto |
topic_facet |
ANTHRACNOSE COLLETOTRICHUM TRUNCATUM PECTINOLYTIC ENZYMES SOYBEAN PECTIN PECTIN LYASE POLYGALACTURONASE COLLETOTRICHUM CONTROLLED STUDY CULTURE MEDIUM ENZYME ACTIVITY ENZYME SYNTHESIS FUNGAL STRAIN FUNGAL VIRULENCE FUNGUS CULTURE FUNGUS GROWTH FUNGUS ISOLATION GEOGRAPHIC DISTRIBUTION IN VITRO STUDY NONHUMAN PH MEASUREMENT PLANT PATHOGEN INTERACTION COLLETOTRICHUM PECTINS PLANT DISEASES SOYBEANS FUNGI GLYCINE MAX |
author |
Ramos, Araceli M. Gally, Marcela Edith García, María Celia Levin, Laura |
author_facet |
Ramos, Araceli M. Gally, Marcela Edith García, María Celia Levin, Laura |
author_sort |
Ramos, Araceli M. |
title |
Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
title_short |
Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
title_full |
Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
title_fullStr |
Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
title_full_unstemmed |
Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose |
title_sort |
pectinolytic enzyme production by colletotrichum truncatum, causal agent of soybean anthracnose |
url |
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46467 |
work_keys_str_mv |
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_version_ |
1756046649060229121 |