Pectinolytic enzyme production by Colletotrichum truncatum, causal agent of soybean anthracnose

Revista iberoamericana de micología
Araceli Marcela RamosLaura Levin

Abstract

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. 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. Ten strains were screened for in vitro pectinolytic enzyme production on a defined medium based on pectin as carbon source. 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 (1.08U/ml PG, 1.05U/ml PMG, 156U/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 consti...Continue Reading

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Citations

Jan 20, 2011·Biotechnology Letters·Alicia Lara-MárquezHoracio Cano Camacho
Aug 12, 2014·Journal of the Science of Food and Agriculture·Marco A Mata-GómezMarcelo Fernández-Lahore
Apr 9, 2020·Frontiers in Microbiology·Qiaoqiao LuoWeibing Zhang
Feb 21, 2021·Molecular Plant Pathology·Thais R BoufleurRiccardo Baroncelli

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