Effect of Metabolic Changes in <i>Aphis gossypii</i>-Damaged Cotton Plants on Oviposition Preference and Larval Development of Subsequent <i>Helicoverpa armigera</i>

Zheng, Shuaichao; Chen, Ruifang; Wang, Lisha; Pan, Shaodong; Liu, Weijiao; Zhu, Xiangzhen; Gao, Xueke; Luo, Junyu; Cui, Jinjie

doi:10.1021/acs.jafc.2c02876

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…Phenylalanine generates trans-cinnamic acid under the action of phenylalanine ammonium lyase (PAL), and finally, SA is synthesized through benzoic acid-2 hydroxylase (BA2H). Chorismate, an important precursor of the synthetic pathway, 50 is also the synthetic precursor of phenylalanine. 51 Both are downstream products of the shikimate pathway.…”

Section: Discussionmentioning

confidence: 99%

Egg-Associated Germs Induce Salicylate Defenses but Not Render Plant Against a Global Invasive Fruit Fly Effectively

Zhao

2023

J. Agric. Food Chem.

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Germs associated with insect eggs can profoundly mediate interactions between host plants and herbivores, with the potential to coordinate plant physiological reactions with cascading effects on insect fitness. An experimental system was established including the oriental fruit fly (OFF, Bactrocera dorsalis) and tomato to examine the functions of egg-associated germs in mediating plant–herbivore interactions. OFF feeding resulted in significantly increased tannins, flavonoids, amino acids, and salicylic acid in the host tomato. These defensive responses of tomato were induced by the egg-associated germs, including Lactococcus sp., Brevundimonas sp., and Vagococcus sp. Tannins and flavonoids had no significant feedback effects on the pupal weight of OFF, while pupal biomass was significantly decreased by tannins and flavonoids in the germ-free treatment. Metabolome analysis showed that OFF mainly induced metabolic changes in carboxylic acid derivatives. Phenylalanine significantly induced downstream metabolic changes associated with phenylpropanoid accumulation. Finally, we conclude that the effects of egg-associated germs played an important role in facilitating OFF population adaptation and growth by mediating plant defenses, which provides a new paradigm for exploring the interaction of plant–pest and implementing effective pest biocontrol.

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Section: Discussionmentioning

confidence: 99%

Egg-Associated Germs Induce Salicylate Defenses but Not Render Plant Against a Global Invasive Fruit Fly Effectively

Zhao

2023

J. Agric. Food Chem.

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“…TraesCS1B02G397300 for QRai-1B-12814 is annotated as a cyclopropane-fatty-acylphospholipid synthase (CFAS). In cotton, CFAS was significantly upregulated in the Aphis gossypii-damaged plants when compared with undamaged plants [46]. TraesCS1B02G-397300 had one non-synonymous substitution (His80Arg) in the exon, and eight SNPs in the promoter.…”

Section: Seven Candidate Genes Have Been Reported To Play Roles In Ap...mentioning

confidence: 97%

Identification of Candidate Genes for English Grain Aphid Resistance from QTLs Using a RIL Population in Wheat

Zhang,

Chen,

et al. 2024

Agronomy

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The English grain aphid (EGA) (Sitobion avenae F.) is one of the most destructive species of aphids in wheat- (Triticum aestivum L.) planting areas worldwide. Large quantities of insecticides are usually used to control aphid damage. The identification of new EGA-resistant genes is necessary for sustainable wheat production. The objective of this study was to identify candidate genes for EGA resistance from stable quantitative trait loci (QTLs). We previously constructed a genetic map of unigenes (UG-Map) with 31,445 polymorphic sub-unigenes via the RNA sequencing of ‘TN18 × LM6’ recombinant inbred lines (TL-RILs). The relative aphid index (RAI) for the TL-RILs was investigated for two growing seasons, with three measured times (MTs) in each season. Using the UG-Map, 43 candidate genes were identified from 22 stable QTLs, with an average of 1.95 candidate genes per QTL. Among the 34 candidate genes annotated in the reference genome Chinese Spring (CS) RefSeq v1.1, the homologous genes of seven candidate genes, TraesCS1A02G-319900, TraesCS1B02G397300, TraesCS2D02G460800, TraesCS4A02G015600LC, TraesCS5B02G329200, TraesCS-6A02G000600 and TraesCS6A02G418600LC have been previously reported to play roles in aphid resistance. This suggests that these genes are strongly associated with EGA resistance in wheat. The candidate genes in this study should facilitate the cloning of EGA-resistant genes and genetic improvement in wheat breeding programs.

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Life table analysis and RNA‐Seq reveal hormesis and transgenerational effects of deltamethrin on Aphis gossypii

Huangfu,

Shang,

Guo

et al. 2024

Pest Management Science

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BackgroundDeltamethrin, as a highly effective and broad‐spectrum insecticide, has been widely used for agricultural pest control such as Aphis gossypii worldwide. Increasing evidence has shown that despite great economic benefits brought by it, deltamethrin has also non‐negligible side effects. However, the potential risks and related molecular mechanisms remain largely unclear.ResultsHerein, the life table parameters and transcriptome sequencing analyses of the four successive aphid generations were performed to investigate the hormesis and transgenerational effects of deltamethrin on A. gossypii. The life table analysis showed that although the exposure of G0 aphid to 30% lethal concentration (LC30) deltamethrin significantly reduced the net reproduction rate (R0), intrinsic rate of increase (r), and fecundity of G0, but it significantly enhanced the R0 and fecundity of subsequent two generations (G1 and G2) of A. gossypii. Moreover, transcriptomic analyses showed that the signaling pathways related to posttranscriptional regulation (spliceosome), protein processing, longevity regulating, and cell proliferation (DNA replication, homologous recombination and non‐homologous end‐joining) were significantly up‐regulated in G1 or G2 under LC30 deltamethrin treatment. Additionally, we also found that the deltamethrin–sulfoxaflor rotation of G0 and G1 still induced reproductive stimulation, but the reproductive stimulation induced by insecticides rotation treatment was significantly lower than that in the deltamethrin exposure alone.ConclusionOur study demonstrates that sublethal concentrations of deltamethrin significantly enhanced the offspring fecundity of cotton aphid. In addition, our study also reveals the transcriptional response mechanism of hormesis‐induced fecundity increase, providing valuable reference for optimizing the application of deltamethrin in integrated pest management. © 2024 Society of Chemical Industry.

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Effect of Metabolic Changes in Aphis gossypii-Damaged Cotton Plants on Oviposition Preference and Larval Development of Subsequent Helicoverpa armigera

Cited by 5 publications

References 46 publications

Egg-Associated Germs Induce Salicylate Defenses but Not Render Plant Against a Global Invasive Fruit Fly Effectively

Egg-Associated Germs Induce Salicylate Defenses but Not Render Plant Against a Global Invasive Fruit Fly Effectively

Identification of Candidate Genes for English Grain Aphid Resistance from QTLs Using a RIL Population in Wheat

Life table analysis and RNA‐Seq reveal hormesis and transgenerational effects of deltamethrin on Aphis gossypii

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