Two host‐plant strains in the fall armyworm DOI Creative Commons
Kiwoong Nam, Nicolas Nègre,

Clara Ines Saldamando Benjumea

и другие.

Insect Science, Год журнала: 2024, Номер unknown

Опубликована: Март 4, 2024

Abstract The fall armyworm ( Spodoptera frugiperda ) is one of the major pest insects damaging diverse crops including cotton, corn, rice, and sorghum. Fall armyworms have been identified as two morphologically indistinguishable strains, corn strain, rice named after their preferred host‐plants. Although initially recognized host‐plant there has an ongoing debate regarding whether strains should be considered such. In this article, we present arguments based on recent population genomics studies supporting that these to strains. Furthermore, adaptation appears a driving evolutionary force responsible for incipient speciation in armyworm.

Язык: Английский

Omics: A new, promising technologies for boosting crop yield and stress resilience in African agriculture DOI Creative Commons
Gideon Sadikiel Mmbando

Plant Stress, Год журнала: 2024, Номер 11, С. 100366 - 100366

Опубликована: Янв. 17, 2024

African agricultural systems are now in crucial need to assure food for the overgrowing population. To meet this challenges, we better way identify and modify key proteins genes involved yield potential, nutrient value, stress tolerance crops like maize, sorghum, soybeans, cassava, rice, etc. The deep understanding of metabolomics, transcriptomics, proteomics, genomics has proven be a useful tool increasing crop resilience Africa. However, there is very little information available regarding recent use omics technology increase yields This review provided advances plants molecular profiling techniques enhance our breeding strategies grown study will plant technologies inform strategies.

Язык: Английский

Процитировано

10
Geographic Monitoring of Insecticide Resistance Mutations in Native and Invasive Populations of the Fall Armyworm DOI Creative Commons
Sudeeptha Yainna, Nicolas Nègre, Pierre Silvie

и другие.

Insects, Год журнала: 2021, Номер 12(5), С. 468 - 468

Опубликована: Май 18, 2021

Field evolved resistance to insecticides is one of the main challenges in pest control. The fall armyworm (FAW) a lepidopteran species causing severe crop losses, especially corn. While native Americas, presence FAW was confirmed West Africa 2016. Since then, has been detected over 70 countries covering sub-Saharan Africa, Middle East, North South Asia, Southeast and Oceania. In this study, we tested whether invasion accompanied by spread mutations from invasive areas. We observed that Bt at ABCC2 genes were only populations where initially reported. Invasive found have higher gene numbers cytochrome P450 than proportion multiple acetylcholinesterase genes, supporting strong selective pressure for against synthetic insecticides. This result explains susceptibility various Chinese populations. These results highlight necessity regular standardized monitoring insecticide using both genomic approaches bioassay experiments.

Язык: Английский

Процитировано

44
Soil-derived bacteria endow Camellia weevil with more ability to resist plant chemical defense DOI Creative Commons
Shouke Zhang,

Zikun Li,

Jinping Shu

и другие.

Microbiome, Год журнала: 2022, Номер 10(1)

Опубликована: Июнь 25, 2022

Abstract Background Herbivorous insects acquire their gut microbiota from diverse sources, and these microorganisms play significant roles in insect hosts’ tolerance to plant secondary defensive compounds. Camellia weevil ( Curculio chinensis ) (CW) is an obligate seed parasite of oleifera plants. Our previous study linked the CW’s microbiome tea saponin (TS) C. seeds. However, source microbiomes, key bacteria involved TS tolerance, degradation functions remain unresolved. Results indicated that CW was more affected by soil than fruits. The soil-derived Acinetobacter served as core bacterial genus, sp. putatively regarded responsible for saponin-degradation guts. Subsequent experiments using fluorescently labeled cultures verified isolate AS23 can migrate into larval guts, ultimately endow its host with ability degrade saponin, thereby allowing subsist a pest within fruits resisting higher concentration chemical. Conclusions systematic studies sources microorganisms, screening taxa metabolite degradation, investigation toxicity mitigation provide clarified evidence intestinal mediate herbivorous against toxins.

Язык: Английский

Процитировано

32
Molecular interaction network of plant-herbivorous insects DOI Creative Commons
Chao Hu, Yuting Li, Yuxi Liu

и другие.

Advanced Agrochem, Год журнала: 2023, Номер 3(1), С. 74 - 82

Опубликована: Сен. 2, 2023

The interactions between plants and herbivorous insects are complex involve multiple factors, driving species formation leading to the beginning of co-evolution diversification plant insect molecules. Various molecular processes regulate insects. Here, we discuss patterns perception feeding through activation early signaling components, crosstalk defense network composed hormones, various adaptive changes in responses defenses. Both defenses counter-defenses adaptation each other. Molecular models plant-herbivorous can more intuitively help us understand co-evolutionary arms race These results will provide detailed evidence elucidate enrich interaction

Язык: Английский

Процитировано

21
Global genomic signature reveals the evolution of fall armyworm in the Eastern hemisphere DOI Creative Commons
Lei Zhang, Zaiyuan Li, Yan Peng

и другие.

Molecular Ecology, Год журнала: 2023, Номер 32(20), С. 5463 - 5478

Опубликована: Авг. 28, 2023

The major plant pest fall armyworm (FAW), Spodoptera frugiperda, is native to the Americas and has colonized Africa Asia within Eastern hemisphere since 2016, causing severe damage multiple agricultural crop species. However, genetic origin of these invasive populations requires more in-depth exploration. We analysed variation across genomes 280 FAW individuals from both Americas. global range-wide structure shows that in America experienced deep differentiation, largely consistent with Z-chromosomal Tpi haplotypes commonly used differentiate 'corn-strain' 'rice-strain' populations. are different American ones have a relatively homogeneous population structure, common recent spreading Asia. Our analyses suggest north- central most likely sources invasion into hemisphere. Furthermore, evidence based on genomic, transcriptomic mitochondrial haplotype network indicates an earlier, independent introduction Africa, subsequent migration population.

Язык: Английский

Процитировано

20
iJAZ-based approach to engineer lepidopteran pest resistance in multiple crop species DOI
Huijuan Mo,

Huimin Chang,

Ge Zhao

и другие.

Nature Plants, Год журнала: 2024, Номер 10(5), С. 771 - 784

Опубликована: Апрель 29, 2024

Язык: Английский

Процитировано

9
Differential detoxification enzyme profiles in C-corn strain and R-rice strain of Spodoptera frugiperda by comparative genomic analysis: insights into host adaptation DOI Creative Commons
Pengfei Yao,

Syed Husne Mobarak,

Mao‐Fa Yang

и другие.

BMC Genomics, Год журнала: 2025, Номер 26(1)

Опубликована: Янв. 6, 2025

The fall armyworm (FAW) Spodoptera frugiperda, a highly invasive, polyphagous pest, poses global agricultural threat. It has two strains, the C-corn and R-rice each with distinct host preferences. This study compares detoxification enzyme gene families across these strains related species to explore their adaptation diverse plant metabolites. A total of 1,995 detoxification-related genes, including cytochrome P450 monooxygenases (CYPs), carboxylesterases (COEs), glutathione S-transferases (GSTs), UDP-glucuronosyltransferases (UGTs), ATP-binding cassette transporters (ABCs), were identified genus Spodoptera, S. littoralis, litura, picta, exigua, both FAW strains. higher abundance phase I enzymes (CYPs COEs) GSTs was observed in species, while exhibited fewer notable differences copy numbers between C R Analyses at subfamily level revealed significant variation distribution expression, particularly within II enzymes. Expansions CYP6AE detected strain, contractions GST-ε, CYP9A, CYP4M, UGT33B, UGT33F occurred In contrast, no substantial III ABC Functional predictions protein interaction networks suggest broader expansion metabolism-related genes strain compared strain. These findings emphasize pivotal role adaptation, providing molecular insights into FAW's capacity for range expansion, which are crucial devising targeted sustainable pest management strategies. differential expression different frugiperda.

Язык: Английский

Процитировано

1
Responses of biological characteristics and detoxification enzymes in the fall armyworm to methoxyfenozide stress DOI
Shuqi Yang, Yue Yuan,

Xiongwei Zhang

и другие.

Journal of Economic Entomology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Abstract Methoxyfenozide is an insecticide with a unique mode of action on the insect ecdysone receptor and has been registered for control pests all over world. In present work, Spodoptera frugiperda was exposed to sublethal lethal concentrations methoxyfenozide determine its impact specific biological traits, metabolic enzyme activity, expression detoxification enzymes. The result showed that 72-h posttreatment LC50 LC70 significantly reduced fecundity (eggs/female) F0 generation compared those group. However, duration prepupal period increased. exposure LC10, LC30, LC50, extended developmental larvae in F1 individuals. decreased, population life table parameters were also affected. activity carboxylesterases little significant change, whereas glutathione S-transferases (GSTs) cytochrome P450 monooxygenases (P450s) altered after methoxyfenozide. total, 24-, 48-, 96-h could cause upregulation genes such as CYP6AE44, CYP6B39, CYP9A26, CYP9A58, CYP9A59, CYP9A60, well GST including GSTe3, GSTe9, GSTe10, GSTe15, GSTo2, GSTs1, GSTs5, GSTm2, GSTm3. These findings be instrumental elucidating molecular mechanisms underlying effects S. frugiperda.

Язык: Английский

Процитировано

1
Associational resistance in the milpa: herbivore‐induced maize volatiles enhance extrafloral nectar‐mediated defenses in common bean via shared parasitoids DOI Open Access
Patrick Grof‐Tisza,

Yerko Moreno,

Clarisse Erb

и другие.

New Phytologist, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Mixed cropping systems typically provide better natural pest control compared with monocultures, although the success varies depending on crop and cultivar combinations. Understanding trait interactions that confer associational resistance (AR) to companion plants is key optimizing these benefits. The Mesoamerican milpa system, known for its resistance, provides a model studying interactions. We tested two hypotheses investigate whether access extrafloral nectar (EFN) produced by Phaseolus vulgaris (common bean) can protect Zea mays (maize): (1) EFN enhances survival performance of parasitoid wasp, leading increased parasitism fall armyworm (FAW) caterpillars accompanying maize reduced herbivory, (2) bean detect herbivore-induced plant volatiles (HIPVs) respond increasing secretion. Controlled experiments demonstrated wasps from lived longer, had higher fecundity, parasitized more maize, thereby reducing herbivore damage. Additionally, caterpillar-damaged primed secretion in via HIPVs. Our findings reveal potentially important AR mechanism milpa, contributing reputed resistance. This understanding could inform design sustainable mixed enhance control.

Язык: Английский

Процитировано

1
Comparison of Gut Bacterial Communities of Fall Armyworm (Spodoptera frugiperda) Reared on Different Host Plants DOI Open Access

Dongbiao Lv,

Xueying Liu,

Yanlu Dong

и другие.

International Journal of Molecular Sciences, Год журнала: 2021, Номер 22(20), С. 11266 - 11266

Опубликована: Окт. 19, 2021

Spodoptera frugiperda is a highly polyphagous and invasive agricultural pest that can harm more than 300 plants cause huge economic losses to crops. Symbiotic bacteria play an important role in the host biology ecology of herbivores, have wide range effects on growth adaptation. In this study, high-throughput sequencing technology was used investigate different hosts (corn, wild oat, oilseed rape, pepper, artificial diet) gut microbial community structure diversity. Corn one most favored S. frugiperda. We compared microbiota corn with without seed coating agent. The results showed Firmicutes Bacteroidetes dominated community. abundance rape highest, diversity oat lowest, agent significantly higher such PCoA analysis there were significant differences among hosts. PICRUSt functional prediction categories related metabolic cellular processes. affected not only by species, but also treatments, which played It deepen our understanding symbiotic relationships between organisms microorganisms. study adaptability insects contributes development effective environmentally friendly management strategies.

Язык: Английский

Процитировано

41