在源自印度尼西亚品种Bramadi的玉米自交系中，对HtNB基因进行定位，该基因在抽穗前赋予对大斑病菌（Exserohilum turcicum (Pass.)）的非损伤抗性。

Mapping of HtNB, a gene conferring non-lesion resistance before heading to Exserohilum turcicum (Pass.), in a maize inbred line derived from the Indonesian variety Bramadi.

作者信息

Wang H, Xiao Z X, Wang F G, Xiao Y N, Zhao J R, Zheng Y L, Qiu F Z

机构信息

National Key Laboratory of Crop Genetic Improvement, HuaZhong Agriculture University, Wuhan, China.

出版信息

Genet Mol Res. 2012 Aug 16;11(3):2523-33. doi: 10.4238/2012.July.10.7.

DOI:10.4238/2012.July.10.7

PMID:22869072

Abstract

The gene HtNB confers non-lesion resistance to the fungal pathogen Exserohilum turcicum in maize. To map this gene, we developed two F₂ populations, P111 (resistant line) x HuangZao 4 (susceptible line) and P111 x B73 (susceptible). HtNB was located on chromosome 8.07 bin, flanked by MAC216826-4 and umc2218 at distances of 3.3 and 3.4 cM, respectively. HtNB appears to be a new gene responsible for resistance to northern corn leaf blight. Functions of the genes in the region between umc1384 and umc2218 were predicted. In addition, several genes were found to be related to disease resistance, such as the genes encoding Ser/Thr protein kinase and protein-like leaf senescence.

摘要

基因HtNB赋予玉米对真菌病原菌大斑突脐蠕孢菌的非损伤抗性。为了定位该基因，我们构建了两个F₂群体，即P111（抗性系）×黄早4（感病系）和P111×B73（感病系）。HtNB位于8.07染色体 bins 上，两侧分别是MAC216826 - 4和umc2218，距离分别为3.3和3.4 cM。HtNB似乎是一个负责抗玉米大斑病的新基因。预测了umc1384和umc2218之间区域内基因的功能。此外，还发现了几个与抗病性相关的基因，如编码丝氨酸/苏氨酸蛋白激酶和类蛋白叶片衰老的基因。