脂氧合酶与作物黄曲霉毒素污染抗性关系研究进展  

Advances of research on relationship between lipoxygenase and resistance to aflatoxin in crops

作　　者：娄庆任[1] 黄家权[1] 王后苗[1] 廖伯寿[1] 

机构地区：[1]中国农业科学院油料作物研究所/农业部油料作物生物学与遗传育种重点实验室,湖北武汉430062

出　　处：《中国油料作物学报》2014年第1期127-134,共8页Chinese Journal of Oil Crop Sciences

基　　金：公益性行业(农业)科研专项经费项目(200903004);国家花生产业技术体系(CARS-14)

摘　　要：曲霉属真菌(Aspergillus)侵染玉米、花生等富含油脂的作物种子后产生的黄曲霉毒素(aflatoxin)具有强致癌作用,严重威胁食品安全和人类健康。脂氧合酶(LOX)及其代谢衍生物在曲霉菌-种子互作中具有重要调节作用。LOX活性的增加可提高植物对细菌、真菌和病毒等病原物的抵抗力,同时由于其催化不饱和脂肪酸代谢生成的脂氧合物如茉莉酸甲酯以及挥发性醛类等物质,可影响黄曲霉菌的生长及黄曲霉毒素的生物合成,因而LOX在作物黄曲霉毒素污染抗性遗传改良中具有潜在的利用价值。本文评述了脂氧合酶及其代谢产物与黄曲霉毒素污染抗性关系的研究进展,旨在从植物-病原菌互作的角度揭示作物黄曲霉毒素污染抗性机制,为下一步的研究提供指导。Aspergillus spp. such as A.flavus and A. parasiticus can infect oil - rich crop seeds and subsequent- ly lead to aflatoxin contamination, which has important impact on economic loss and health risk. Recent studies have revealed the role of lipoxygenases and their derivatives in signalling cross - kingdom communication between crop seeds and toxigenic Aspergillus spp. The metabolites of plant lipoxygenase pathway has a significant effect on differential processes such as HPODE, methyl jasmonate and aldehyde, which may either inhibit or stimulate fungal development and aflatoxin production. This paper reviewed the concerned research progress on lipoxygenases and their correlation with aflatoxin contamination.

关 键 词：脂氧合酶 黄曲霉毒素污染 产毒抗性 

分 类 号：Q554[生物学—生物化学] Q949.3