【文献解读】|NG-- A gene encoding maize caffeoyl-CoA O-methyltransferase confers quantitative resistanc...

背景：

multiple disease resistance (MDR)

A quantitative trait locus, qMdr9.02

SLB (causal agent Cochliobolusheterostrophus), GLS (causal agent Cercospora zeae-maydis) and NLB (causalagent Setosphaeria turcica)

结果：

ZmCCoAOMT2, which encodes a caffeoyl-CoAO-methyltransferase associated with the phenylpropanoid pathway and ligninproduction,conferring quantitative resistance to both southern leaf blight andgray leaf spot.

qMdr9.02位点对抗病性起作用的基因是ZmCCoAOMT2（GRMZM2G099363）。ZmCCoAOMT2基因编码咖啡酰辅酶A-O-甲基转移酶，该酶参与类苯基丙烷和脂氧合酶代谢途径，对木质素的合成有重要作用。ZmCCoAOMT2通过强化植物细胞壁，抑制植物细胞编程性死亡来实现抗病的效果。该基因氨基酸序列的差异导致了表达水平的多样性，最终造成了该位点在玉米品种中抗病性状的遗传多态性。

日积月累：

Foliar: [ˈfoʊliər]   adj.叶的

Blight: [blaɪt]  n.枯萎病；荒芜 vt. 破坏；使…枯萎 vi. 枯萎

Fungal diseases are a major constraint tothe production of maize (Zea mays. L), one of the world’s most widely usedcrops.