Fungal Community Dynamics in Cyperus rotundus: Implications for Rhizophora mangle in a Mangrove Ecosystem

International Journal of Plant Biology, Journal Year: 2025, Volume and Issue: 16(1), P. 23 - 23

Published: Feb. 19, 2025

Mangrove ecosystems are globally significant for their biodiversity and ecosystem services but face persistent threats from invasive species anthropogenic disturbances. This study investigates the interactions between Cyperus rotundus, a widespread weed, fungal communities in mangrove-adjacent wetlands of Isla Santay, Ecuador. Using metagenomic sequencing ITS region, we analyzed diversity samples an anthropogenically pressured area non-impacted site. Results revealed differences microbial assemblages: rhizosphere sample disturbed exhibited lower richness was dominated by Magnaporthaceae (9%) Aureobasidium melanogenum (5%), both associated with stress-tolerant traits. In contrast, site showed higher diversity, Cladosporium dominicanum (62%) Talaromyces (11%) as dominant endophytic taxa. Principal Coordinates Analysis (PCoA) co-occurrence networks highlighted distinct partitioning two tissues, indicating that C. rotundus mediates composition response to environmental gradients. These findings underscore role plant’s success suggest leveraging beneficial fungi could enhance resilience support wetland restoration. By integrating molecular approaches ecological insights, this work contributes deeper understanding dynamics coastal informs targeted management strategies preserve mangrove habitats.

Language: Английский

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Potential of an entomopathogenic fungus from the Cladosporium cladosporioides species complex for aphid control: insights from biological parameters and bioassays

BioControl, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Language: Английский

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Host diet and phylogeny interact to shape the bacterial and fungal microbiome in the regurgitant of four Spodoptera species

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

The gut microbiome of Lepidopteran insects is highly dynamic, influenced by both host diet and phylogeny. While microbial communities are thought to facilitate adaptation diverse diets environments, the existence a core shared among closely related herbivores remains largely untested. In this study, we examined in regurgitant four Spodoptera species (S. exigua, S. frugiperda, latifascia, littoralis) across different (artificial diet, cotton, maize, squash). Using high-throughput sequencing, characterized bacterial fungal community composition diversity. Bacterial were shaped species, indicating species-specific selection. contrast, exclusively structured with lower diversity dominance few key taxa. Notably, no operational taxonomic units consistently all or diets, challenging concept conserved these generalist herbivores. Understanding how shape herbivores’ ability feed on plants may offer potential strategies for microbiome-based pest management.

Language: Английский

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Neglected Microbes in Floral Nectar: Influence of Filamentous Fungi on Nectar Scent and Parasitoid Olfactory Responses

Journal of Chemical Ecology, Journal Year: 2025, Volume and Issue: 51(2)

Published: March 12, 2025

Abstract Floral nectar is a sugar-rich resource which ubiquitously inhabited by wide array of microorganisms. Fermentation nectar-inhabiting microbes can alter several traits, including scent, via changes in the blend volatile organic compounds (VOCs). Although there growing evidence on how yeasts and bacteria influence foraging behavior flower-visiting insects, potential role other microbial taxa that colonize has been largely neglected. In this study, we investigated filamentous fungi isolated from floral buckwheat, Fagopyrum esculentum , affect scent olfactory responses two co-occurring egg parasitoid species, Trissolcus basalis Ooencyrtus telenomicida . Among nectar-feeding adult parasitoids are common visitors flowers as they depend resources to satisfy their energetic nutritional needs. olfactometer assays, found fermentation out six fungal strains, namely Cladosporium sp. SAAF 22.2.11 22.3.29, elicited behavioral response species when tested against non-fermented nectar. particular, O. displayed positive both -fermented nectars, while T. only responded positively fermented 22.2.11. Chemical investigations revealed significant differences VOC blends across all fungus-fermented despite partial overlap between emitted attractive versus non-attractive nectars. Altogether, these findings highlight previously unexplored interactions insects flower-associated microbes, broadening our understanding beyond well-studied influences bacteria.

Language: Английский

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Immune Gene Repertoire of Soft Scale Insects (Hemiptera: Coccidae)

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(9), P. 4922 - 4922

Published: April 30, 2024

Insects possess an effective immune system, which has been extensively characterized in several model species, revealing a plethora of conserved genes involved recognition, signaling, and responses to pathogens parasites. However, some taxonomic groups, by peculiar trophic niches, such as plant-sap feeders, are often important pests crops forestry ecosystems, have largely overlooked regarding their gene repertoire. Here we annotated the soft scale insects (Hemiptera: Coccidae) for omics data publicly available. By using aphids Drosophila query genome Ericerus pela, well transcriptomes Ceroplastes cirripediformis Coccus sp., highlight lack peptidoglycan recognition proteins, galectins, thaumatins, antimicrobial peptides Coccidae. This work contributes expanding our knowledge about evolutionary trajectories offers list promising candidates developing new control strategies based on suppression pests' immunity through RNAi technologies.

Language: Английский

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Microbial Community Structure and Metabolic Function in the Venom Glands of the Predatory Stink Bug, Picromerus lewisi (Hemiptera: Pentatomidae)

Insects, Journal Year: 2024, Volume and Issue: 15(9), P. 727 - 727

Published: Sept. 21, 2024

The predatory stink bug, Picromerus lewisi (Hemiptera: Pentatomidae), is an important and valuable natural enemy of insect pests in their ecosystems. While insects are known to harbor symbiotic microorganisms, these microbial symbionts play a crucial role various aspects the host’s biology, there paucity knowledge regarding microbiota present venom glands P. lewisi. This study investigated adult bugs using both traditional vitro isolation cultural methods, as well Illumina high-throughput sequencing technology. Additionally, carbon metabolism gland’s microorganisms was analyzed Biolog ECO metabolic phenotyping results showed 10 different culturable bacteria where dominant ones were Enterococcus spp. Lactococcus lactis. With sequencing, main bacterial phyla community Proteobacteria (78.1%) Firmicutes (20.3%), with genera being Wolbachia, Enterococcus, Serratia, Lactococcus. At fungal level, Ascomycota accounted for largest proportion (64.1%), followed by Basidiomycota (27.6%), Vishniacozyma, Cladosporium, Papiliotrema, Penicillium, Fusarium, Aspergillus most highly represented genera. structure exhibited high species richness diversity, along strong 22 sources. Functional prediction indicated that primary function venom-gland metabolism. eco-functional groups included undefined saprotroph, parasite–undefined unassigned, endophyte–plant pathogen, plant pathogen–soil saprotroph–wood animal pathogen–endophyte–plant pathogen–wood pathogen–endophyte–epiphyte–plant pathogen–undefined saprotroph. These provide comprehensive characterization demonstrate stability (over one week) within glands. represents first report on composition from captive-reared individuals. insights gained this invaluable future investigations into lewisi’s development possible interactions between some Lepidopteran pests.

Language: Английский

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Identification and Biocontrol of Cladosporium Mold Caused by Cladosporium cladosporioides on Wheat Spikes in Central China

Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2330 - 2330

Published: Oct. 10, 2024

Wheat (Triticum aestivum L.) is one of the most agriculturally and economically important crops in world. fungal diseases are becoming more severe frequent due to global climate change, threatening wheat yields security. While such as fusarium head blight, stripe rust, powdery mildew have been extensively studied, newly emerged pathogens still under-researched. In May 2023, black mold symptoms were observed on spikes Xinxiang City, Henan Province, China. However, causal agent this disease was not known. We employed a combination morphological examination molecular techniques identify pathogen. The internal transcribed spacer (ITS) region, translation elongation factor 1-alpha (tef1), actin (act) genes fungus partially sequenced (accession no. OR186209, PQ271633 PQ271632) showed 99.59–100% identity with previously reported Cladosporium cladosporioides, which affects wheat, pokeweed, black-eyed pea. pathogenicity confirmed by fulfilling Koch’s postulates. Through rigorous screening process, we found Simplicillium aogashimaense, Trichothecium roseum, Bacillus velezensis effective biocontrol agents, B. demonstrating potent antagonistic activity against mold. This discovery potential for management. findings underscore importance present study advancing control disease.

Language: Английский

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Biological control of Oligia latruncula (Denis & Schiffermüller, 1775) using Cladosporium sp.: evaluation of virulence and efficacy

International Journal of Tropical Insect Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Language: Английский

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