Induction of 2-cyanoethyl-isoxazolin-5-one as an antifeedant against the tobacco cutworm (Spodoptera litura) by jasmonic acid in sweet pea leaf

Induction of 2-cyanoethyl-isoxazolin-5-one as an antifeedant against the tobacco cutworm (Spodoptera litura) by jasmonic acid in sweet pea leaf
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甜豌豆叶中茉莉酸诱导 2-氰乙基-异恶唑啉-5-酮作为烟草地老虎(斜纹夜蛾)的拒食剂

DOI:
10.1080/09168451.2020.1724072
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发表时间:
2020
期刊:
Bioscience, Biotechnology, and Biochemistry
影响因子:
--
通讯作者:
Sato Masashi
Sato Masashi
中科院分区:
--
文献类型:
--
作者:
Tebayashi Shinichi;Moriyama Ruri;Arakawa Ryo;Sato Masashi

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虽然香豌豆(Lathyrus odoratus)含有有毒的β-氨基丙腈,但植物本身很容易受到昆虫的攻击,因此通过使用杀虫剂来保护。因此,L.通过外源处理来抵抗昆虫攻击是害虫控制发展的前景。诱导型激发子筛选结果表明,茉莉酸(JA)处理甜豌豆叶片可诱导烟草地老虎(Spodoptera litura)幼虫产生拒食抗性。光谱分析确定2-氰乙基-异恶唑啉-5-酮(2-CEIX)为拒食剂,半最大有效浓度为33.6 µmol/g fr. wt.,也就是说,外源JA处理由于2-CEIX的积累而诱导拒食活性。此外,2-CEIX诱导S.通过浸渍试验评价了lituralarlavine,并确定半数最大致死剂量为5.9 mg/mL。因此,2-CEIX被认为是一个合适的诱导抗性的目标诱导剂或杀虫剂开发的先导化合物。
Although sweet pea (Lathyrus odoratus) beans contain toxic β-aminopropionitrile, the plant itself is readily attacked by insects and is, therefore, protected through the use of pesticides. Consequently, the induction ofL. odoratusresistance to insect attack via exogenous treatment is promising for pest control development. Screening of inducible elicitor effects showed that treatment of sweet pea foliage with jasmonic acid (JA) can induce antifeeding-based resistance to tobacco cutworm (Spodoptera litura) larvae. Spectroscopic analysis identified 2-cyanoethyl-isoxazolin-5-one (2-CEIX) as the antifeedant with a half-maximal effective concentration of 33.6 µmol/g fr. wt., i.e., exogenous JA treatment induced antifeeding activity due to the accumulation of 2-CEIX. Moreover, 2-CEIX-induced mortality ofS. lituralarvae was evaluated by a dipping test and the half-maximal lethal dose was determined to be 5.9 mg/mL. Therefore, 2-CEIX was concluded to be a suitable induced resistance target for elicitors or a lead compound for insecticide development.
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