Regulation of Migration in<i>Mythimna separata</i>(Walker) in China: A Review Integrating Environmental, Physiological, Hormonal, Genetic, and Molecular Factors

Jiang, Xingfu; LiZhi, Luo; Zhang, Lei; Sappington, Thomas W.; Hu, Yi

doi:10.1603/en10199

Cited by 171 publications

(175 citation statements)

References 101 publications

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“…Long-distance movement of M. separata between overwintering sites and non-overwintering sites were responsible for six nationwide economic pests in China from 1970 to 1978 [3]. The environmental, physiological, hormonal, and genetic control of individual M. separata migratory behavior has been systematically elucidated [3–7]. However, our understanding of olfaction systems in M. separate is limited.…”

Section: Introductionmentioning

confidence: 99%

Age influences the olfactory profiles of the migratory oriental armyworm mythimna separate at the molecular level

Feng

Guo

2017

BMC Genomics

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BackgroundThe oriental armyworm Mythimna separata (Walk) is a serious migratory pest; however, studies on its olfactory response and its underlying molecular mechanism are limited. To gain insights to the olfactory mechanism of migration, olfactory genes were identified using antennal transcriptome analysis. The olfactory response and the expression of olfactory genes for 1-day and 5-day-old moths were respectively investigated by EAG and RT-qPCR analyses.ResultsPutative 126 olfactory genes were identified in M. separata, which included 43 ORs, 13 GRs, 16 IRs, 37 OBPs, 14 CSPs, and 3 SNMPs. RPKM values of IR75d and 10 ORs were larger than co-receptors IR25a and ORco, and the RPKM value of PR2 was larger than that of other ORs. Expression of GR1 (sweet receptor) was higher than that of other GRs. Several sex pheromones activated evident EAG responses where the responses of 5-day-old male moths to the sex pheromones were significantly greater than those of female and 1-day old male moths. In accordance with the EAG response, 11 pheromone genes, including 6 PRs and 5 PBPs were identified in M. separate, and the expression levels of 7 pheromone genes in 5-day-old moths were significantly higher than those of females and 1-day-old moths. PR2 and PBP2 might be used in identifying Z11-16: Ald, which is the main sex pheromone component of M. separata. EAG responses to 16 plant volatiles and the expression levels of 43 olfactory genes in 1-day-old moths were significantly greater than that observed in the 5-day-old moths. Heptanal, Z6-nonenal, and benzaldehyde might be very important floral volatiles for host searching and recognized by several olfactory genes with high expression. Some plant volatiles might be important to male moths because the EAG response to 16 plant volatiles and the expression of 43 olfactory genes were significantly larger in males than in females.ConclusionsThe findings of the present study show the effect of adult age on olfactory responses and expression profile of olfactory genes in the migratory pest M. separate.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-3427-2) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Age influences the olfactory profiles of the migratory oriental armyworm mythimna separate at the molecular level

Feng

Guo

2017

BMC Genomics

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“…The infestation of these two insect pests very 26 easily occurs, mainly because they have developed multiple resistances to commonly used 27 conventional agrochemicals resulting in population outbreaks, affecting yields of maize, 28 wheat, rice and some crucifer crops. [1][2][3][4][5][6][7] Consequently, the search for new potential alternatives 29 to effectively and selectively control insect pests has recently received considerable attention 30 in the agricultural field. 8-18 31 Fraxinellone, 1 (Figure 1), a degraded limonoid, exhibited interesting pesticidal 32 activities.…”

Section: Introduction 23mentioning

confidence: 99%

Semisynthesis of Esters of Fraxinellone C4/10-Oxime and Their Pesticidal Activities

Qin

Huang

et al. 2016

J. Agric. Food Chem.

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A total of 20 esters of fraxinellone C4/10-oxime were synthesized and determined by melting points, optical rotation, infrared spectra, proton nuclear magnetic resonance spectra, and high-resolution mass spectrometry spectra. Two steric configurations of compounds 7i and 8i were unambiguously confirmed by X-ray crystallography. Additionally, their pesticidal activities were assessed on two typical lepidopteran pests, Mythimna separata Walker and Plutella xylostella Linnaeus. Generally, all compounds exhibited less potent oral toxicity than toosendanin against third-instar larvae of P. xylostella. However, all compounds showed the growth inhibitory property against early third-instar larvae of M. separata. Notably, compounds 7m, 8b, 8k, 9, and 11 displayed more potent pesticidal activity than toosendanin. This demonstrated that introducing the C-4 carbonyl or oxime group on fraxinellone resulted in more promising derivatives than those bearing a C-10 carbonyl or oxime substituent.

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“…2009; Jiang et al . 2011). The downregulation of the AT receptor, BNGR‐A16 , in long fliers from Dafeng suggests that the contrasting flight propensities between Dafeng and Anyang (Fig.…”

Section: Resultsmentioning

confidence: 99%

Genomewide transcriptional signatures of migratory flight activity in a globally invasive insect pest

et al. 2015

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Migration is a key life history strategy for many animals and requires a suite of behavioural, morphological and physiological adaptations which together form the ‘migratory syndrome’. Genetic variation has been demonstrated for many traits that make up this syndrome, but the underlying genes involved remain elusive. Recent studies investigating migration‐associated genes have focussed on sampling migratory and nonmigratory populations from different geographic locations but have seldom explored phenotypic variation in a migratory trait. Here, we use a novel combination of tethered flight and next‐generation sequencing to determine transcriptomic differences associated with flight activity in a globally invasive moth pest, the cotton bollworm Helicoverpa armigera. By developing a state‐of‐the‐art phenotyping platform, we show that field‐collected H. armigera display continuous variation in flight performance with individuals capable of flying up to 40 km during a single night. Comparative transcriptomics of flight phenotypes drove a gene expression analysis to reveal a suite of expressed candidate genes which are clearly related to physiological adaptations required for long‐distance flight. These include genes important to the mobilization of lipids as flight fuel, the development of flight muscle structure and the regulation of hormones that influence migratory physiology. We conclude that the ability to express this complex set of pathways underlines the remarkable flexibility of facultative insect migrants to respond to deteriorating conditions in the form of migratory flight and, more broadly, the results provide novel insights into the fundamental transcriptional changes required for migration in insects and other taxa.

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Regulation of Migration inMythimna separata(Walker) in China: A Review Integrating Environmental, Physiological, Hormonal, Genetic, and Molecular Factors

Cited by 171 publications

References 101 publications

Age influences the olfactory profiles of the migratory oriental armyworm mythimna separate at the molecular level

Age influences the olfactory profiles of the migratory oriental armyworm mythimna separate at the molecular level

Semisynthesis of Esters of Fraxinellone C4/10-Oxime and Their Pesticidal Activities

Genomewide transcriptional signatures of migratory flight activity in a globally invasive insect pest

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