INVESTIGADORES
SCERVINO Jose martin
artículos
Título:
Effects of the phosphate-solubilizing fungus Talaromyces flavus on the development and efficiency of the Gigaspora rosea-Triticum aestivum symbiosis
Autor/es:
I. DELLA MONICA; STEFANONI RUBIO, PJ; R. CINA; RECCHI, M; A GODEAS; J. M. SCERVINO
Revista:
SYMBIOSIS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 64 p. 25 - 32
ISSN:
0334-5114
Resumen:
This study analyzed the interaction between the phosphate-solubilizing fungus (PSF) Talaromyces flavus and the arbuscular mycorrhizal fungus (AMF) Gigaspora rosea in vitro, and whether the in vivo application of T. flavus was able to stimulate the efficiency of the symbiosis between G. rosea and wheat (Triticum aestivum). In vitro, the soluble chemical substances released by T. flavus promoted the development of pre-infective mycelium from germinating AMF spores, increasing the length of each branch and the number of branches. In vivo, the inoculation of T. flavus increased plant wet and dry weight of mycorrhizal plants, regardless of the P conditions. AMF root colonization was inhibited under high P conditions but was promoted by T. flavus inoculation. The inoculation of T. flavus also improved the symbiotic efficiency of mycorrhizal plants, measured as APA, and increased the total plant phosphate content and shoot:root phosphate ratio in mycorrhizal plants. To our knowledge, this is the first report where exudates produced by a PSF as T. flavus promote pre-infective development, root colonization and symbiotic efficiency of G. rosea in wheat. Finally, the role of T. flavus in rhizosphere interactions is discussed