INVESTIGADORES
GRESLEBIN Alina Gabriela
artículos
Título:
Rhizospheric microorganisms as potential biocontrol agents against Phytophthora austrocedri
Autor/es:
MARFETÁN, JORGE ARIEL; GRESLEBIN, ALINA G.; TACCARI, LEONARDO E.; VÉLEZ, MARÍA LAURA
Revista:
EUROPEAN JOURNAL OF PLANT PATHOLOGY
Editorial:
SPRINGER
Referencias:
Año: 2020 vol. 158 p. 721 - 732
ISSN:
0929-1873
Resumen:
Austrocedrus chilensis [D.Don] Pic. Serm. etBizarri (Pinales: Cupressaceae) is a keystone tree speciesin SouthAmerica.Mortality of A. chilensis has beenreported over most of its distribution in Argentina, andPhytophthora austrocedri has been identified as thecausal agent. The aim of this work was to evaluaterhizospheric microorganisms present in A. chilensisroots as biocontrol agents against P. austrocedri. Mycelialgrowth of P. austrocedri was inhibited by sevenfungal and four bacterial isolates in vitro. Interactionamong isolates and P. austrocedri was microscopicallystudied. Isolates with high in vitro fungistatic orfungicide performance were molecularly identified andinoculated in plants to evaluate their ability to reduce theeffect of the pathogen. Two of the bacterial isolates wereable to reduce the symptoms in A. chilensis seedlingsinoculated with P. austrocedri. These findings arepromising since they may contribute to the developmentof a biocontrol strategy for the disease.
