Occurrence of Fusarium species in asymptomatic barley plants grown in field conditions under differential phosphate regimes

ECHEVERRIA, MARIELA; MORENO, MARIA VIRGINIA; CAPUTO SUAREZ, CARLA PAULA

CURRENT SCIENCE

INDIAN ACAD SCIENCES

Lugar: Bangalore ; Año: 2018 vol. 115

0011-3891

Occurrence of genus Fusarium as endophytes in roots of healthy barley plants cultivated in field under two levels of phosphorous (P) was examined. F. avenaceum, F. graminearum, F. konzum, F. oxysporum, F. sacchari, F. scirpi, F. solani were isolated from asymptomatic surface sterilised root tissues. F. konzum and F. solani were only present in the roots of fertilized plants, whereas F. sacchari in the unfertilized ones. F. scirpi was isolated in highest frequency and relative density, and was higher under P deficiency suggesting that P availability would determinate the occurrence of this species, suggesting the possibility of their association with stressed plants. This is the first report about the occurrence of Fusarium spp. as endophytes in healthy barley plants. However, it remains to be determined whether Fusarium spp. isolated are nonpathogenic forms and beneficial to the barley plants or latent pathogens and could produce disease symptoms in other conditions.