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Effect of Co‐infection by Fusarium oxysporum and Cowpea Mosaic Virus on the Growth and Colonization of Cowpea Seedlings ( Vigna unguiculata [L.] Walp.)
Author(s) -
Chant S. R.,
Gbaja I. S.
Publication year - 1986
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1986.tb00897.x
Subject(s) - biology , vigna , fusarium oxysporum , cowpea mosaic virus , infectivity , cucumber mosaic virus , pathogen , colonization , virus , horticulture , botany , plant virus , microbiology and biotechnology , virology
Combined infection of cowpea seedlings (c. v. ‘California Blackeye”) by cowpea mosaic virus (CPMV) and Fusarium oxysporum induced greater losses in leaf area, fresh and dry weights than infection by either pathogen alone. The growth of seedlings infected by F. oxysporum f. sp. tracheiphilum was less than that of comparable seedlings infected by F. oxysporum f. sp. phaseoli. The virus infectivity of extracts of the trifoliate leaves of dual‐infected plants was significantly higher than that of comparable extracts from the leaves of plants singly infected with CPMV. The nature of the effects of multiple infection in cowpea is discussed.