Prospects for plant defence activators and biocontrol in IPM - Concepts and lessons learnt so far
Prospects for plant defence activators and biocontrol in IPM - Concepts and lessons learnt so far
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DOI：
10.1016/j.cropro.2016.10.003
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发表时间：
2017-07-01
期刊：
影响因子：
2.8
通讯作者：
Ton, Jurriaan
中科院分区：
文献类型：
--
作者：
Bruce, Toby J. A.;Smart, Lesley E.;Ton, Jurriaan
迫切需要开发新的干预措施来控制害虫，因为杀虫剂抗药性的演变和立法的变化限制了农民的常规防治选择。研究了β-氨基丁酸(BABA)、茉莉酸(JA)和果糖对灰霉病(Botrytis Cinerea)和南方根结线虫(Meloidogyne Ingenita)的植物防病活性。我们还测试了赤眼蜂和一种拒食植物提取物对入侵的番茄潜叶蛾的生物防治作用。BABA和JA提高了番茄植株对灰霉病的抗性，但这两种处理都不能提供完全的保护，而且处理的效果随时间而异，BABA比JA更持久。番茄的药效部分取决于番茄品种，有些品种对BABA处理的反应好于其他品种。此外，用BABA、JA和果糖处理番茄可部分抑制南方根结线虫卵块的发育。通过调整饲养条件，可以提高生防剂刺蛾的防治效果。在绝对星天牛上饲养寄生蜂，而不是在其他昆虫上饲养，可提高寄生率和寿命。结果表明，虎杖提取物具有显著的拒食活性。我们的发现表明，在保护农作物方面存在潜在的新解决方案，但它们比传统杀虫剂更复杂、更多变，需要更多的生物学知识。单独而言，它们可能无法提供与杀虫剂相同的保护水平，但在综合防治战略中使用时可能会更有效。(C)2016爱思唯尔有限公司。保留所有权利。
There is an urgent need to develop new interventions to manage pests because evolution of pesticide resistance and changes in legislation are limiting conventional control options for farmers. We investigated beta-aminobutyric acid (BABA), jasmonic acid (JA) and fructose as possible plant defence activators against grey mould disease, Botrytis cinerea, and root knot nematode, Meloidogyne incognita. We also tested Trichogramma achaeae parasitoid wasps and an antifeedant plant extract for biocontrol of the invasive tomato leafminer, Tuta absoluta. BABA and JA enhanced resistance of tomato plants to B. cinerea but neither treatment provided complete protection and the efficacy of treatment varied over time with BABA being more durable than JA. Efficacy was partly dependent on tomato cultivar, with some cultivars responding better to BABA treatment than others. Furthermore, treatment of tomato with BABA, JA and fructose led to partial suppression of M. incognita egg mass development. Biocontrol agent, T achaeae, performance against T. absoluta could be enhanced by adjusting the rearing conditions. Both attack rate and longevity were improved by rearing the parasitoids on T. absoluta rather than on other insects. Finally, Ajuga chamaepitys extract was shown to have significant antifeedant activity against T. absoluta. Our findings suggest that there are potential new solutions for protection of crops but they are more complicated to deploy, more variable and require more biological knowledge than conventional pesticides. In isolation, they may not provide the same level of protection as pesticides but are likely to be more potent when deployed in combination in IPM strategies. (C) 2016 Elsevier Ltd. All rights reserved.