期刊
PHYTOCHEMISTRY
卷 66, 期 20, 页码 2474-2480出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2005.08.013
关键词
Zea mays; Gramineae; maize; teosinte; Gibberella moniliformis; Fusarium verticillioides; phytotoxicity; fumonisins; beauvericin; diacetoxyscirpenol; moniliformin
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 FBI (ED50 = ca. 200 mu m). The teosintes and 76% of the maize landraces were moderately or highly sensitive to FBI (ED50 <= 30 mu M), which indicates that FB1 sensitivity is likely to be an ancestral trait in Z. mays. F-1 generations derived from crosses between FBI-sensitive maize inbred B73 and insensitive landraces were significantly less sensitive than B73. Thus, our data indicate that FB1-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. Published by Elsevier Ltd.
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