摘要
应用病原菌瓜类剌盘孢(Colletotrichum langenarium)和细菌性角斑病菌(Pseudomonas lachrymans)对黄瓜第1片真叶进行免疫诱导处理,发现处理后黄瓜第2片真叶的G6PD(6磷酸葡萄糖脱氢酶,下同)、PAL(苯丙氨酸解氨酶,下同)、4CL(4肉桂酸羟化酶,下同)、PO(过氧化物酶,下同)活性都有所增强,并分别在诱导后的第2或第3天出现高峰,酶活性的增高与抗性出现相对应。免疫诱导处理的植株与对照植株的第2片真叶,在受病原菌感染时表现:(1)G6PD、PAL、4CL、PO活性都同步上升,但免疫诱导处理的植株各酶活性上升较快,幅度较大,维持时间较长;(2)接种后4天,免疫诱导处理的植株中木质素含量是对照的二倍。
By inoculating the first true leaf of cucumber with Colletotrichum lagenarium or Pseudomonas lachrymas, the activities of four enzymes (G6PD, PAL, 4CL, PO) in the second true leaf increased and got to a maximum two or three days after induction. The activities of enzymes coincided with the protection. When immunized plant and unimmunized plant were challenged by pathogens, (1) the activities of four enzymes (G6PD, PAL, 4CL, PO) increased synchronously; however. the activities of these enzymes increased more largely and easily in the former than in the latter; (2) immunized plant contained as about twice amount of lignin as unimmunized one four days after challenge.
出处
《上海农业学报》
CSCD
1990年第2期21-26,共6页
Acta Agriculturae Shanghai
基金
国家自然科学基金
