Can fungal endophytes suppress Trialeurodes vaporariorum and the transmission of tomato infectious chlorosis and chlorosis viruses in field conditions?

Frontiers in Cellular and Infection Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Feb. 4, 2025

Field trials were conducted for two seasons in experimental sites (Mwea Kirinyaga and Ngoliba Kiambu counties of Kenya) to assess the efficacy fungal endophytes Hypocrea lixii F3ST1 Trichoderma asperellum M2RT4 control Trialeurodes vaporariorum vector tomato infectious chlorosis virus (TICV) (ToCV) through seeds inoculation. TICV ToCV’s disease incidence, severity yield also evaluated. All successfully colonized all plant parts, but highest root colonization was observed H. compared T. both seasons. The number nymphs significantly lower endophytically plants than treatments at sites. However, lowest recorded M2RT4. On other hand, ToCV incidence rates crops plots. This could be attributed reduction replication feeding ability that characterized by less excretion honeydew causing sooty mold. no significant difference among across higher endophyte plots study demonstrates conferred systemic resistance against vector, reduced transmission ToCV, contributing high diseases’ field. further studies are warranted confirm these results large scale trials.

Language: Английский

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Trichoderma virens and Pseudomonas chlororaphis Differentially Regulate Maize Resistance to Anthracnose Leaf Blight and Insect Herbivores When Grown in Sterile versus Non-Sterile Soils

Plants, Journal Year: 2024, Volume and Issue: 13(9), P. 1240 - 1240

Published: April 30, 2024

Soil-borne Trichoderma spp. have been extensively studied for their biocontrol activities against pathogens and growth promotion ability in plants. However, the beneficial effect of on inducing resistance insect herbivores has underexplored. Among diverse species, consistent with previous reports, we showed that root colonization by T. virens triggered induced systemic (ISR) to leaf-infecting hemibiotrophic fungal Colletotrichum graminicola. Whether induces ISR pests not tested before. In this study, investigated whether affects jasmonic acid (JA) biosynthesis defense fall armyworm (FAW) western corn rootworm (WCR). Unexpectedly, results maize seedlings grown autoclaved soil suppressed wound-induced production JA, resulting reduced FAW. Similarly, bacterial endophyte Pseudomonas chlororaphis 30-84 was found suppress FAW due JA. Further comparative analyses effects these endophytes when applied sterile or non-sterile field both P. C. graminicola conditions, but only JA soil, while no significant impact observed soil. contrast defense, roots WCR larvae survival weight gain. This is first report suggesting potential role as a agent WCR.

Language: Английский

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Biocontrol potential of fungal endophytes for pests management in cereals

Biocontrol Science and Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 42

Published: Dec. 9, 2024

Cereal production is vital for food security and economic growth, but insect infestations can significantly reduce crop yields quality, leading to substantial losses. Recent pest management strategies in cereal crops have incorporated innovative techniques, such as utilizing mutualistic plant-microbe interactions that trigger molecular defense mechanisms against pests. Entomopathogenic fungi, particularly Beauveria Metarhizium (Hypocreales), are naturally found soil infect a wide range of arthropod These fungi also colonize plants rhizosphere inhabitants endophytes, offering multiple benefits, including enhanced growth resistance. As these promote plant biomass herbivore development, consumption, oviposition, survival the field. Species like bassiana anisopliae shown potential controlling both chewing sap-sucking pests major cereals wheat, rice, maize, sorghum. However, exact through which control endophytes not yet fully understood. This review summarizes biological entomopathogenic fungi-plant their role control, exploring how could be integrated into discussing challenges application. Future research should focus on understanding adaptive enable function endophytic genetics influence improve suppression. By uncovering mechanisms, we enhance effectiveness fungi-based contributing more sustainable crops.

Language: Английский

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Trichoderma virens and Pseudomonas chlororaphis Differentially Regulate Maize Resistance to Anthracnose Leaf Blight and Insect Herbivores When Grown in Sterile versus Non-sterile Soils

Published: March 22, 2024

Soil-borne Trichoderma spp. have been extensively studied for their biocontrol activities against pathogens and growth promotion ability with plants. However, the beneficial effect of on inducing resistance insect herbivores has considered only recently. Among diverse species, consistent previous reports, we showed that root colonization by T. virens triggered induced systemic (ISR) to leaf-infecting fungal pathogens. Whether induces ISR pests not tested before. In this study, investigated whether affects jasmonic acid (JA) biosynthesis defense fall armyworm (FAW) western corn rootworm (WCR). Unexpectedly, results maize seedlings grown in autoclaved soil suppressed wound-induced production JA, resulting reduced FAW. Similarly, bacterial endophyte Pseudomonas chlororaphis 30-84 FAW due JA. Further comparative analyses effects these endophytes when applied into sterile or non-sterile field both P. hemibiotrophic pathogen Colletotrichum graminicola conditions, but soil. contrast defense, roots WCR larvae survival weight gain. This is first report suggesting potential role as a agent WCR.

Language: Английский

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