Heat Stress and Plant–Biotic Interactions: Advances and Perspectives

Plants, Journal Year: 2024, Volume and Issue: 13(15), P. 2022 - 2022

Published: July 23, 2024

Climate change presents numerous challenges for agriculture, including frequent events of plant abiotic stresses such as elevated temperatures that lead to heat stress (HS). As the primary driving factor climate change, HS threatens global food security and biodiversity. In recent years, have negatively impacted physiology, reducing plant's ability maintain disease resistance resulting in lower crop yields. Plants must adapt their priorities toward defense mechanisms tolerate challenging environments. Furthermore, selective breeding long-term domestication higher yields made varieties vulnerable multiple stressors, making them more susceptible events. Studies on predict concurrent biotic will become severe future, potentially occurring simultaneously or sequentially. While most studies focused singular effects systems examine how plants respond specific stresses, simultaneous occurrence pose a growing threat agricultural productivity. Few explored interactions between plant-biotic interactions. Here, we aim shed light physiological molecular (bacteria, fungi, oomycetes, nematodes, insect pests, pollinators, weedy species, parasitic plants), well combined impact growth We also advances designing developing various strategies address multi-stress scenarios related factors.

Language: Английский

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Cell-free supernatants from plant growth-promoting rhizobacteria Bacillus albus strains control Aspergillus flavus disease in peanut and maize seedlings

Beni-Suef University Journal of Basic and Applied Sciences, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 17, 2025

Abstract Background Aspergillus flavus , a seed-borne fungal pathogen, colonizes host plants and exploits nutrients, hindering the growth of seedlings such as peanut maize. This study investigates effectiveness cell-free supernatants (CFSs) from plant growth-promoting rhizobacteria (PGPR) Bacillus albus strains NNK24 NDP61, which belong to cereus group, in suppressing A. AF1. Results The antifungal activity these CFSs was attributed their surfactant properties chemical composition. These were characterized using rapid assays ultra-high-performance liquid chromatography-electrospray ionization-quadrupole time-of-flight/mass spectrometry (UHPLC-ESI-QTOF/MS), combined with bioinformatic tools Global Natural Product Social Molecular Networking (GNPS) Products Atlas (NPAtlas). Identified putative compounds included two diketopiperazines (cyclo(Pro-Leu) cyclo(2-hydroxy-Pro-Leu)), four macrolactins (7-O-succinyl macrolactin A, 7-O-methyl-5′-hydroxy-3′-heptenoate-macrolactin, B, C), siderophores (petrobactin bacillibactin), three cyclic lipopeptides (kurstakin 1, 2 or 3, 4). are hypothesized act synergistically via multiple mechanisms, including disruption membranes, iron capture, direct antibiosis, triggering immunity. Both strongly suppressed harmful effects AF1 on maize seedlings, reducing disease incidence (DI) severity index (DSI) compared controls. control efficacy (DCE) comparable that commercial fungicide. Additionally, enhanced seed germination, vigor, seedling length, weight both Vigor (VI) values increased by 222.4–286.0% peanuts 181.7–216.4% at 7 days after treatment (DAT). Conclusion B. NDP61 show significant potential bioprotective agents for sustainable agriculture. Importantly, use eliminates need live bacterial cells addressing biosafety concerns. Graphical abstract

Language: Английский

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Biocontrol Potential of Trichoderma Ghanense and Trichoderma Citrinoviride toward Pythium aphanidermatum

Journal of Fungi, Journal Year: 2024, Volume and Issue: 10(4), P. 284 - 284

Published: April 12, 2024

Pythium-induced damping-off of cucumber is a major constraint to production in different parts the world. Although chemical fungicides are used for managing this disease, they have many drawbacks environment. The ability antagonistic fungi isolated from rhizosphere and endosphere Dactyloctenium robecchii Moraea sisyrinchium control soilborne pathogen Pythium aphanidermatum was inspected. Native Trichoderma isolates, ghanense citrinoviride, were plant stem soil samples collected Al-Seeb, Oman. Using dual culture technique, activity fungal isolates against P. examined vitro. Among T. more efficient restraining mycelial growth aphanidermatum, causing an inhibition percentage 44.6%. Further, citrinoviride induced significantly lower cessation (31.3%). Microscopic electrolyte leakage inspection mycelia depicted extreme morphological malformations their mycelium, which can be attributed antifungal metabolites antagonists. Greenhouse studies demonstrated effectivity controlling plants, where number surviving plants over 90% when biocontrol agents compared 0 plants. Furthermore, treatment with antagonists promoted characteristics uninoculated This included improvements shoot root lengths, leaf length width, dry weight. These findings suggest that developed as alternatives synthetic manage pathogens cucumber. research also first clarify caused by aphanidermatum.

Language: Английский

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One stone two birds: Endophytes alleviating trace elements accumulation and suppressing soilborne pathogen by stimulating plant growth, photosynthetic potential and defense related gene expression

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135084 - 135084

Published: July 4, 2024

Language: Английский

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Biological Control of Tomato Bacterial Leaf Spots and Its Impact on Some Antioxidant Enzymes, Phenolic Compounds, and Pigment Content

Biology, Journal Year: 2024, Volume and Issue: 13(6), P. 369 - 369

Published: May 23, 2024

Tomato bacterial spots, caused by Xanthomonas campestris pv. vesicatoria (Xcv1) and X. euvesicatoria (Xe2), as well specks, two strains of Pseudomonas syringae tomato (Pst1 Pst2), represent significant threats to production in the El-Sharkia governorate, often resulting substantial yield losses. The objective this study was evaluate efficacy various biocontrol culture filtrates, including bacteria fungi agents, managing occurrence severity these diseases, while also monitoring physiological changes leaves, antioxidant enzymes, phenolics, pigment content. filtrates from examined Trichoderma species (T. viride, T. harzianum, album), tested (Bacillus subtilis, fluorescens, Serratia marcescens) at concentrations 25%, 50%, 100%, significantly inhibited proliferation pathogenic In vitro. For vivo experiments, we used specific doses 5 mL spore suspension per plant for fungal bioagents a concentration 2.5 × 107 spores/mL. were applied 10 1 108 CFU/mL. Spraying days before infection reduced disease incidence severity. viride exhibited highest among bioagents, followed harzianum album. Meanwhile, filtrate B. subtilis emerged most potent P. fluorescens. Furthermore, applying resulted elevated levels chitinase, peroxidase, polyphenol oxidase activity. This effect extended increased phenol contents, chlorophyll a, b, carotenoids sprayed plants compared control treatment. Overall, findings underscore potential strategies effectively mitigate enhancing defense mechanisms parameters, thus offering promising avenues sustainable management production.

Language: Английский

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Biological Control Agents in Greenhouse Tomato Production (Solanum lycopersicum L.): Possibilities, Challenges and Policy Insights for Western Balkan Region

Horticulturae, Journal Year: 2025, Volume and Issue: 11(2), P. 155 - 155

Published: Feb. 2, 2025

Greenhouse tomato production holds strong economic importance in the Western Balkan (WB) countries, driven by escalating market demands. To align with global food safety trends, systematic advancements cultivation practices and pest management strategies are essential for WB region. Conventional reliance on chemical pesticides as primary control method has led to various adverse outcomes, impacting effectiveness reducing product quality. The impact of climate change agricultural productivity further emphasizes need environmentally friendly solutions protection. address these challenges mitigate detrimental effects pesticides, this review explores sustainable, alternative solutions, like biological agents (BCAs), With gaining recognition an effective approach, yet remaining underutilized WB, provides a thorough analysis most effective, commercially available BCAs, critically evaluating their advantages limitations. Widespread BCA application could support expansion sector while fostering sustainable practices. Furthermore, role BCAs within Integrated Pest Management (IPM) frameworks production, emphasizing alignment Sustainable Development Goals (SDGs), particularly countries aiming EU integration.

Language: Английский

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From Field to Fork: the benefits of Trichoderma spp. in food quality and safety

Current Opinion in Food Science, Journal Year: 2025, Volume and Issue: unknown, P. 101286 - 101286

Published: Feb. 1, 2025

Language: Английский

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Biological Control of Pseudomonas syringae in Tomato Using Filtrates and Extracts Produced by Alternaria leptinellae

Horticulturae, Journal Year: 2024, Volume and Issue: 10(4), P. 334 - 334

Published: March 28, 2024

Endophytic fungi offer promising alternatives for sustainable plant disease management strategies, often through the production of bioactive secondary metabolites. This study investigated biocontrol potential filtrates and extracts, produced under controlled conditions, from Alternaria leptinellae E138 against Pseudomonas syringae in tomato plants greenhouse conditions. To understand main mechanisms involved biocontrol, direct inhibition bacterial growth disruption quorum sensing activity caused by metabolites were studied vitro, as well indirect mechanisms, such their capacity to produce phytohormone-like substances, nutrient mobilization, antioxidant activity, which can enhance fitness. Moreover, a mass spectrometry analysis was used tentatively identify present extract with antimicrobial properties, could explain effects observed. Mycopriming assays, involving treatment seeds fungal A. increased germination rates seedling vigor seeds. As another treatment, postemergence application extracts conditions significantly improved health resulted 41% decrease severity. Overall, this underscores promoter capabilities, offering avenues management.

Language: Английский

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Synergistic interactions of biocontrol agents and chemical fungicides enhance the disease resistance in Vigna radiata (L.) against Macrophomina phaseolina-associated with dry root rot

Physiological and Molecular Plant Pathology, Journal Year: 2024, Volume and Issue: 134, P. 102441 - 102441

Published: Oct. 11, 2024

Language: Английский

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Identifikasi jamur endofit dari tumbuhan Sonneratia alba J. E. Smith dan potensi antagonisnya terhadap jamur Alternaria alternata (Fr.) Keissler

Jurnal Biologi Udayana, Journal Year: 2025, Volume and Issue: 28(2), P. 207 - 207

Published: Jan. 5, 2025

Alternaria alternata adalah jamur patogen penyebab penyakit early blight tanaman tomat yang mengakibatkan penurunan produksi mencapai 79% di beberapa negara. Solusi biokontrol alternatif untuk mengatasi masalah ini dapat memanfaatkan endofit berasosiasi dengan tumbuhan mangrove. Tumbuhan mangrove Sonneratia alba memiliki banyak senyawa bioaktif dan strain telah dimanfaatkan bidang agrikultur hingga farmakologis. Penelitian bertujuan mengidentifikasi dari S. mengetahui kemampuannya dalam menghambat pertumbuhan A. alternata. Hasil penelitian teridentifikasi 5 spesies endofit, salah satunya Penicillium sp. penghambatan tertinggi terhadap sebesar 73,96 ± 2,24%. Filtrat KPM-2.1 secara signifikan (P?0,05) menunjukkan daya hambat terbesar pada konsentrasi 100% (v/v) koloni alternata, yakni 37,76 1,97%. Berdasarkan hasil tersebut disimpulkan bahwa filtrat kurang efektif sebagai antagonis dibandingkan pembanding Trichoderma harzianum KPD-1, 72,64 1,90%.

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