论文部分内容阅读
提起虫害,人们马上会想起蝗灾的电视报道,铺天盖地的飞蝗成群飞迁,所到之作作物片甲无存,一派凄凉景象,然而在无情的虫灾中,总会有一块绿洲可免受虫害,这就是番茄园。番茄为何能逃过一劫,躲过蝗虫的噬食呢?昆虫学家通过观察研究后发现,当食叶性虫子爬上番茄叶子,稍有品尝后便会怏怏离去,这并非叶子不对口味,原因在于番茄植株遭受虫咬后,能迅即做出应变反应,叶内会分泌出一种对消化酶有抑制作用的阻酶物质,引起昆虫消化不良,使其不攻自退。番茄的这种特异的防御本领,可谓是植物王国的一种趣闻,可它为什么会生成这种阻酶物质,叶子与叶子之间又如何传递报警信号呢?长期以来一直是个难解之谜。
People are immediately reminded of television reports of locust infestations. Overwhelming migratory locust swarms migrate to places where crops are destroyed. There are always desolate scenes. However, there is always an oasis in the ruthless pests that can be protected Pests, this is tomato garden. Why tomato escaped escaping grasshoppers eating it? Entomologists through the observation and study found that when leaf-feeding insects climbing tomato leaves, a little tasting will leave, it is not the taste of leaves The reason is that tomato plants suffer from insect bites, the strain response can be made immediately, the leaves will be secreted a digestive enzyme inhibitory enzyme blocking substances, causing insects indigestion, making it offensive and retreat. This particular defense of tomatoes is an anecdote of the plant kingdom. But why does it generate this enzyme-blocking substance and how the leaves and leaves transmit warning signals? It has long been a mystery.