Insects, Journal Year: 2025, Volume and Issue: 16(2), P. 218 - 218
Published: Feb. 17, 2025
The fall armyworm (FAW), Spodoptera frugiperda, is one of the major agricultural pests that has invaded China. FAW a polyphagous insect with gramineous crop sorghum being key host plant. However, basis sorghum’s chemical defense against feeding still unclear. In this study, we investigated potential defensive mechanism species. It was found larvae preferred maize over sorghum, selection and damage rates for plants by were significantly lower than those plants, on restricted larval weight. non-target metabolomics revealed altered plant secondary metabolite spectra in resulting species-specific differential metabolites (DSMs). Of these, 19 DSMs specific maize, 51 only 6 both Two-choice no-choice assays gambogenic acid chimonanthine, two unique to deter decrease These findings reveal regulated changing response induced have function acting as antifeedants, which provides new insights into employing bioactive compounds insects.
Language: Английский
Citations
1Flood‐Induced Insect Resistance in Maize Involves Flavonoid‐Dependent Salicylic Acid Induction
Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown
Published: March 31, 2025
ABSTRACT Plants have evolved the ability to respond a diverse range of biotic and abiotic stresses. Often, combining these stresses multiplies challenge for plants, but occasionally combined stress can induce unexpected synergistic defences. In maize, flooding herbivory induces salicylic acid (SA)‐dependent defence against Spodoptera frugiperda (fall armyworm). this study we used RNAseq metabolic profiling show that flavonoids are involved in maize response herbivory. To assess role flood‐induced S. resistance, analyzed idf mutant has compromised expression chalcone synthase, first enzyme flavonoid biosynthesis. This flavonoid‐deficient was both resistance SA accumulation. These data revealed an requirement induction. contrast , 3′ hydroxylase mutant, pr1 showed enhanced accumulation after combinatorial treatment, which closely correlated with elevated levels select dihydroflavonol reductase, anthocyaninless1 ( a1 ) unaffected its SA‐induction. indicate specific likely play resistance.
Language: Английский
Citations
1Leaf Extracts of Miconia albicans (Sw.) Triana (Melastomataceae) Prevent the Feeding and Oviposition of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae)
Agronomy, Journal Year: 2023, Volume and Issue: 13(3), P. 890 - 890
Published: March 17, 2023
Sustainability in food production is an increasingly discussed issue nowadays; therefore, demands for research that can reduce costs and ensure the quality autonomy of are relevant, with attention to use plants due their importance biodiversity. Thus, objective this was evaluate bioactivity, feeding preference, oviposition preference Miconia albicans botanical extracts at concentrations 1%, 5%, 10% against Plutella xylostella. We observed reduced larval duration, survival, female hatching success, repellence all concentrations. For higher concentrations, showed a mortality rate 58%, reduction 82%, 94%, showing potential pest control. Phytochemical analyses identified phenolic compounds, flavonoids, tannins, which substances repellent larvicidal properties. This first report on phytosanitary M. albicans, plant has both lethal sublethal effects P.
Language: Английский
Citations
21Beyond Bites: Differential Role of Fall Armyworm Oral Secretions and Saliva in Modulating Sorghum Defenses
Molecular Plant-Microbe Interactions, Journal Year: 2024, Volume and Issue: 37(3), P. 232 - 238
Published: Jan. 19, 2024
Flavonoids are major plant secondary metabolites that provide defense against several insect pests. Previously, it has been shown sorghum ( Sorghum bicolor) flavonoids required for providing resistance to fall armyworm (FAW; Spodoptera frugiperda), which is an important chewing pest on crops. We demonstrate here the role of FAW oral cues in modulating flavonoid defenses. While feeding, insects release two kinds cues: secretions (OS)/regurgitant and saliva. Our results indicate OS induced expression genes related biosynthesis total flavonoids, thereby enhancing sorghum's larvae. Conversely, saliva suppressed flavonoid-based defenses promoted caterpillar growth, independent salivary component, glucose oxidase (GOX). Thus, we infer different may have contrasting roles altering These findings expand our understanding precise modes action help designing novel management strategies this vital cereal crop. [Formula: see text] Copyright © 2024 The Author(s). This open access article distributed under CC BY-NC-ND 4.0 International license .
Language: Английский
Citations
7Dynamic regulation of phenylpropanoid pathway metabolites in modulating sorghum defense against fall armyworm
Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13
Published: Nov. 25, 2022
Plants undergo dynamic metabolic changes at the cellular level upon insect infestation to better defend themselves. Phenylpropanoids, a hub of secondary plant metabolites, encompass wide range compounds that can contribute resistance. Here, role sorghum (Sorghum bicolor) phenylpropanoids in providing defense against chewing herbivore, fall armyworm (FAW), Spodoptera frugiperda, was explored. We screened panel nested association mapping (NAM) founder lines FAW and identified SC1345 Ajabsido as most resistant susceptible FAW, respectively, compared reference parent, RTx430. Gene expression metabolomic studies suggested feeding suppressed genes involved monolignol biosynthetic pathway their associated phenolic intermediates 10 days post infestation. Further, genotype displayed elevated levels flavonoid after for days, suggesting diversion precursors from lignin biosynthesis pathway. Additionally, bioassays with having altered flavonoids provided genetic evidence are crucial resistance FAW. Finally, application regurgitant FAW-resistant genotype. Overall, our study indicates regulation phenylpropanoid plants imparts
Language: Английский
Citations
24Greenbug feeding-induced resistance to sugarcane aphids in sorghum
Frontiers in Ecology and Evolution, Journal Year: 2023, Volume and Issue: 11
Published: Feb. 10, 2023
Plants are attacked by multiple insect pest species and herbivory can alter plant defense mechanisms. The responses to a specific herbivore may also contribute the growth/survival on plants. Feeding one modulate defenses, which either facilitate or hamper colonization of subsequent incoming insects. However, little is known about effect sequential sorghum In this study, we demonstrate that specialist aphid, sugarcane aphid (SCA; Melanaphis sacchari ) grows faster than generalist species, greenbug (GB; Schizaphis graminum ). We determined how pre-infestation SCA affected invasion GB vice-versa . Our experiments revealed reproduction was lower GB-primed plants, however, reverse not true. To assess differences in defenses induced vs. aphids, monitored expression salicylic acid (SA) jasmonic (JA) marker genes, flavonoid biosynthetic pathway genes after 48 h infestation. results indicated infestation higher SA JA-related ( DFR , FNR FNSII compared Overall, our suggested GB-infested plants activate via phytohormones flavonoids at early time points hampers SCA, as well explain reproductive success GB.
Language: Английский
Citations
15Fall Armyworm Frass Induce Sorghum Defenses Against Insect Herbivores
Journal of Chemical Ecology, Journal Year: 2025, Volume and Issue: 51(2)
Published: March 13, 2025
Language: Английский
Citations
0Sorghum defense responses to sequential attack by insect herbivores of different feeding guilds
Planta, Journal Year: 2023, Volume and Issue: 258(2)
Published: June 30, 2023
Language: Английский
Citations
10The fall armyworm: recent advances in biology and management
Journal of Pest Science, Journal Year: 2023, Volume and Issue: 96(4), P. 1341 - 1343
Published: Aug. 19, 2023
Language: Английский
Citations
10Plant defense against insect herbivory: Flavonoid-mediated growth inhibition of Helicoverpa zea
Plant Stress, Journal Year: 2025, Volume and Issue: unknown, P. 100738 - 100738
Published: Jan. 1, 2025
Language: Английский
Citations
0