Identification and heritability of fumonisin insensitivity in Zea mays |
| |
Authors: | Desjardins Anne E Plattner Ronald D Stessman Richard J McCormick Susan P Millard Mark J |
| |
Institution: | National Center for Agricultural Utilization Research, United States Department of Agriculture, Peoria, IL 61604, USA. desjarae@ncaur.usda.gov |
| |
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. |
| |
Keywords: | Zea mays Gramineae Maize Teosinte Gibberella moniliformis Fusarium verticillioides Phytotoxicity Fumonisins Beauvericin Diacetoxyscirpenol Moniliformin |
本文献已被 ScienceDirect PubMed 等数据库收录! |