Université Paul Sabatier, Centre de Physiologie Végétale. U.A. 241 CNRS, 118, route de Narbonne, 31062 Toulouse Cédex, France.
Plant Physiol. 1986 May;81(1):228-33. doi: 10.1104/pp.81.1.228.
Treatment of melon leaves or seedlings with elicitors of Colletotrichum lagenarium, a fungal pathogen of melon, increases chitinase activity. In treated leaves, chitinase is enhanced within the first 6 hours and becomes 2 to 10 times higher than in control leaves after 24 hours. Ethylene is increased simultaneously and is correlated with chitinase elicitation. In the presence of aminoethoxyvinylglycine, an inhibitor of ethylene synthesis, both elicitor-induced ethylene and elicitor-induced chitinase are inhibited. This inhibition is overcome by added exogenous ethylene. On the other hand, 1-aminocyclopropane-1-carboxylic acid the direct precursor of ethylene, triggers chitinase activity. Chitinase elicitation is thought to be a protein synthesis dependent process, as it does not occur in the presence of cycloheximide.
用瓜类炭疽病菌(Colletotrichum lagenarium)的诱导物处理甜瓜叶片或幼苗会增加几丁质酶的活性。在处理过的叶片中,几丁质酶在最初的 6 小时内增强,并在 24 小时后比对照叶片高出 2 到 10 倍。同时,乙烯也会增加,并且与几丁质酶的诱导有关。在乙烯合成抑制剂氨基乙氧基乙烯甘氨酸存在的情况下,诱导物诱导的乙烯和几丁质酶都受到抑制。这种抑制可以通过添加外源乙烯来克服。另一方面,1-氨基环丙烷-1-羧酸(ethylene 的直接前体)触发几丁质酶的活性。几丁质酶的诱导被认为是一个依赖于蛋白质合成的过程,因为在环己酰亚胺存在的情况下,它不会发生。