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应用烯丙苯噻唑对肾形螺旋线虫和爪哇根结线虫的影响

Effects of Acibenzolar-S-Methyl Application to Rotylenchulus reniformis and Meloidogyne javanica.

作者信息

Chinnasri B, Sipes B S, Schmitt D P

出版信息

J Nematol. 2003 Mar;35(1):110-4.

Abstract

Effects of acibenzolar-s-methyl, an inducer of systemic acquired resistance in plants, on Rotylenchulus reniformis and Meloidogyne javanica in vitro and in vivo were determined. A single foliar application of acibenzolar at 50 mg/liter (5 ml of solution per plant) to 7-day-old cowpea or soybean seedlings decreased R. reniformis and M. javanica egg production by 50% 30 days after inoculation. The mechanism of acibenzolar on plant-parasitic nematodes was then investigated. Acibenzolar at 50 to 200 mg/liter did not affect movement of R. reniformis and M. javanica or penetration of second-stage juveniles (J2) of M. javanica on cowpea. However, M. javanica development was slowed and fecundity was reduced in plants treated with acibenzolar. On average, 50% of J2 that penetrated acibenzolar-treated cowpeas developed into mature females with eggs, whereas the other 50% exhibited arrested development. The number of eggs per egg mass was 450 in water-treated cowpeas, whereas the number declined to 250 in acibenzolar-treated plants. Acibenzolar may be responsible for stimulating the plants to express some resistance to the nematodes.

摘要

测定了植物系统获得性抗性诱导剂烯丙苯噻唑对肾形肾线虫和爪哇根结线虫的体内外效应。对7日龄豇豆或大豆幼苗叶面喷施一次浓度为50毫克/升(每株5毫升溶液)的烯丙苯噻唑,接种30天后,肾形肾线虫和爪哇根结线虫的产卵量减少了50%。随后研究了烯丙苯噻唑对植物寄生线虫的作用机制。浓度为50至200毫克/升的烯丙苯噻唑不影响肾形肾线虫和爪哇根结线虫的活动,也不影响爪哇根结线虫二龄幼虫(J2)在豇豆上的侵入。然而,在经烯丙苯噻唑处理的植物中,爪哇根结线虫的发育减缓,繁殖力降低。平均而言,侵入经烯丙苯噻唑处理的豇豆的J2中,有50%发育成有卵的成熟雌虫,而另外50%则发育停滞。水处理豇豆中每个卵块的卵数为450个,而在烯丙苯噻唑处理的植物中,这一数字降至250个。烯丙苯噻唑可能促使植物对线虫表现出某种抗性。

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