Biocontrol and population dynamics of Fusarium spp. on wheat stubble in Argentina

Autor: Sofia Noemi Chulze, Juan Manuel Palazzini, Adriana Mabel Torres, B. H. Groenenboom-de Haas, Jürgen Köhl
Jazyk: angličtina
Rok vydání: 2012
Předmět:
0106 biological sciences
Fusarium
Microdochium nivale
Crop residue
crop residues
gliocladium-roseum
Population
Biotecnología Agropecuaria
Biological pest control
Plant Science
Horticulture
01 natural sciences
Ética relacionada con Biotecnología Agrícola
Wheat stubble
clonostachys-rosea
03 medical and health sciences
Genetics
education
grain
030304 developmental biology
Botrytis cinerea
2. Zero hunger
0303 health sciences
education.field_of_study
biology
Real-time qPCR
biological-control
food and beverages
Biocontrol
gibberella-zeae
head blight
Fusarium spp
biology.organism_classification
Gibberella zeae
Agronomy
fumonisin content
CIENCIAS AGRÍCOLAS
Clonostachys rosea
PRI BIOINT Ecological Interactions
quantitative detection
botrytis-cinerea
Agronomy and Crop Science
010606 plant biology & botany
Zdroj: Plant Pathology, 62(4), 859-866
Plant Pathology 62 (2013) 4
Plant Pathology
ISSN: 0032-0862
Popis: The biocontrol effect of Clonostachys rosea (strains 016 and 1457) on Fusarium graminearum, F. avenaceum, F. verticillioides, F. langsethiae, F. poae, F. sporotrichioides, F. culmorum and Microdochium nivale was evaluated on naturally infected wheat stalks exposed to field conditions for 180 days. Experiments were conducted at two locations in Argentina, Marcos Juarez and Rı´o Cuarto. Antagonists were applied as conidial suspensions at two inoculum levels. Pathogens were quantified by TaqMan real-time qPCR. During the first year at Marcos Juarez, biocontrol was observed in one antagonist treatment for F. graminearum after 90 days (73% reduction) but after 180 days, the pathogen decreased to undetectable levels. During the second year, biocontrol was observed in three antagonist treatments for F. graminearum and F. avenaceum (68 3% and 98 9% DNA reduction, respectively, after 90 days). Fusarium verticillioides was not controlled at Marcos Juarez. At Rı´o Cuarto, biocontrol effects were observed in several treatments at different intervals, with a mean DNA reduction of 88 7% for F. graminearum and F. avenaceum, and 100% reduction for F. verticillioides in two treatments after 180 days. Populations of F. avenaceum and F. verticillioides were stable; meanwhile, F. graminearum population levels varied during the first 90 days, and low levels were observed after 180 days. The other pathogens were not detected. The study showed that wheat stalks were important reservoirs for F. avenaceum and F. verticillioides populations but less favourable for F. graminearum survival. Clonostachys rosea (strain 1457) showed potential to reduce the Fusarium spp. on wheat stalks. Fil: Palazzini, Juan Manuel. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Haas, B. H. Groenenboom de. University Of Agriculture Wageningen; Países Bajos Fil: Torres, Adriana Mabel. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Köhl, J.. University Of Agriculture Wageningen; Países Bajos Fil: Chulze, Sofia Noemi. Universidad Nacional de Río Cuarto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Databáze: OpenAIRE
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