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Microscopic and transcriptome analyses of early colonization of tomato roots by "Trichoderma harzianum".

Opened Access Microscopic and transcriptome analyses of early colonization of tomato roots by "Trichoderma harzianum".

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Autor: Chacón, Mariola R.
Rodríguez Galán, Olga
Benítez Fernández, Concepción Tahía
Sousa, Sonia
Rey, Manuel
Llobell González, Antonio
Delgado Jarana, Jesús
Departamento: Universidad de Sevilla. Departamento de Genética
Fecha: 2007
Publicado en: International microbiology: official journal of the Spanish Society for Microbiology, 10 (1), 19-27.
Tipo de documento: Artículo
Resumen: The capacity of the fungus Trichoderma harzianum CECT 2413 to colonize roots and stimulate plant growth was analyzed. Tobacco seedlings (Nicotiana benthamiana) transferred to Petri dishes inoculated with T. harzianum conidia showed increased plant fresh weight (140%) and foliar area (300%), as well as the proliferation of secondary roots (300%) and true leaves (140%). The interaction between strain CECT 2413 and the tomato-root system was also studied during the early stages of root colonization by the fungus. When T. harzianum conidia were inoculated into the liquid medium of hydroponically grown tomato plants (Lycopersicum esculentum), profuse adhesion of hyphae to the plant roots as well as colonization of the root epidermis and cortex were observed. Confocal microscopy of a T. harzianum transformant that expressed the green fluorescent protein (GFP) revealed intercellular hyphal growth and the formation of plant-induced papilla-like hyphal tips. Analysis of the T. harzianu...
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Cita: Chacón, M.R., Rodríguez Galán, O., Benítez Fernández, C.T., Sousa, S., Rey, M., Llobell González, A. y Delgado Jarana, J. (2007). Microscopic and transcriptome analyses of early colonization of tomato roots by "Trichoderma harzianum".. International microbiology: official journal of the Spanish Society for Microbiology, 10 (1), 19-27.
Tamaño: 706.1Kb
Formato: PDF

URI: http://hdl.handle.net/11441/41597

DOI: 10.2436/20.1501.01.4

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