<正>潜伏侵染是病原菌侵入到寄主组织后不马上发病 ,而要等到寄主或环境条件适宜才表现症状的一种侵染现象。生物鉴定法、组织学法和血清学法可用于确定某一病害是否存在潜伏侵染。已知果树和农作物病害存在潜伏侵染现象的主要有香蕉炭疽病 (Colletotrichumgloeosporioides)、西红柿腐烂病 (Alternariaalternata)、羽扇豆茎腐病 (Phomopsisleptostromi formis)和油菜腐烂病 (Leptosphaeriamaculans)等。林木病害存在潜伏侵染现象的主要有杨树溃疡病 (Dothiorellagregaria)、杉木炭疽病 (Glomerellacingulata)和针叶树落针病 (Lopho dermiumspp .)等。对潜伏侵染的研究有助于病害防治和抗病育种。

Latent infection is the state in which a host is infected with a pathogen but does not show symptoms and persists until signs or symptoms are prompted to appear by environmental or nutritional conditions. Bioassay and histological method as well as serological techniques can be used to detect latent infection. Latent infection is common by diverse species of pathogens. Colletotrichum gloeosporioides, Alternaria alternata, Phomopsis leptostromiformis, Leptosphaeria maculans, Dothiorella gregaria, Glomerella cingulata and Lophodermium spp. etc. can persist on various hosts such as fruit trees, crops or trees. Research about latent infection is important in control of plant disease and in the breeding for resistance to a pathogen.