Identification and heritability of fumonisin insensitivity in Zea mays.
Phytochemistry
; 66(20): 2474-80, 2005 Oct.
Article
em En
| MEDLINE
| ID: mdl-16198380
ABSTRACT
Landraces of maize (Zea mays ssp. mays) and its wild teosinte relatives (Zea mays spp. parviglumis and mexicana) were surveyed for sensitivity to fumonisin B(1), a phytotoxin produced by the maize pathogen Gibberella moniliformis. Only two of 42 Z. mays samples were highly insensitive to FB(1) (ED(50) = ca. 200 microM). The teosintes and 76% of the maize landraces were moderately or highly sensitive to FB(1) (ED(50) < or = 30 microM), which indicates that FB(1) sensitivity is likely to be an ancestral trait in Z. mays. F(1) generations derived from crosses between FB(1)-sensitive maize inbred B73 and insensitive landraces were significantly less sensitive than B73. Thus, our data indicate that FB(1)-insensitivity is a relatively rare but heritable trait in maize. We also report the sensitivity of maize to other Gibberella toxins - beauvericin, diacetoxyscirpenol, and moniliformin.
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Base de dados:
MEDLINE
Assunto principal:
Zea mays
/
Fumonisinas
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article