%0 Journal Article
%T Isolation and screening of Trichoderma strains antagonistic to Sclerotinia sclerotiorum and Sclerotinia minor
%A Ibarra-Medina
%A Ver¨®nica Azucena
%A Ferrera-Cerrato
%A Ronald
%A Alarc¨®n
%A Alejandro
%A Lara-Hern¨¢ndez
%A Mar¨ªa Encarnaci¨®n
%A Valdez-Carrasco
%A Jorge Manuel
%J Revista mexicana de micolog¨ªa
%D 2010
%I Sociedad Mexicana de Micolog¨ªa
%X sclerotinia sclerotiorum (ss) and sclerotinia minor (sm) drastically affect more than 400 plant species, and may cause crop yield reductions up to 50%. with the purpose to obtain potential microorganisms to control both pathogens, the isolation of trichoderma strains from soil samples with different agricultural and forestry use was performed. seventy-one fungal trichoderma isolates (iba) were obtained through sclerotia-trap techniques. subsequently their mycoparasitic activities on mycelium as well as on sclerotia of both phytopathogens were assessed by in vitro dual cultures. the highest percentages of colonization (>90%) of the trichoderma strains on ss and sm were found for the isolates iba-3, iba-4, iba-38, iba-54. the ability of trichoderma strains to parasitize and to degrade sclerotia in general was aggressive for the strains iba-3, iba-4, iba-23, iba-38, iba-46, iba-54, and iba-56. based on morphological criteria, four of the most prominent strains were identified as t. viride (iba-4), t. pseudokoningii (iba-23), t. harzianum (iba-38), and t. virens (iba-46). these trichoderma strains have important potential as antagonists to ss and sm.
%K mycoparasitism
%K antibiosis
%K sclerotia degradation.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S0187-31802010000100008&lng=en&nrm=iso&tlng=en