New approaches to improve crop tolerance to biotic and abiotic stresses

Physiologia Plantarum, Год журнала: 2021, Номер 174(1)

Опубликована: Сен. 4, 2021

During the last years, a great effort has been dedicated at development and employment of diverse approaches for achieving more stress-tolerant climate-flexible crops sustainable yield increases to meet food energy demands future. The ongoing climate change is in fact leading frequent extreme events with negative impact on production, such as increased temperatures, drought, soil salinization well invasive arthropod pests diseases. In this review, "green strategies" (e.g., chemical priming, root-associated microorganisms), advanced technologies genome editing, high-throughput phenotyping) are described basis most recent research evidence. Particularly, attention focused potential use context climate-smart agriculture (the so called "next generation") improve plant tolerance resilience abiotic biotic stresses. addition, gap between results obtained controlled experiments those from application these real field conditions (lab step) also discussed.

Язык: Английский

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Interactive effects of changes in UV radiation and climate on terrestrial ecosystems, biogeochemical cycles, and feedbacks to the climate system

Photochemical & Photobiological Sciences, Год журнала: 2023, Номер 22(5), С. 1049 - 1091

Опубликована: Фев. 1, 2023

Terrestrial organisms and ecosystems are being exposed to new rapidly changing combinations of solar UV radiation other environmental factors because ongoing changes in stratospheric ozone climate. In this Quadrennial Assessment, we examine the interactive effects ozone, climate on terrestrial biogeochemical cycles context Montreal Protocol. We specifically assess organisms, agriculture food supply, biodiversity, ecosystem services feedbacks system. Emphasis is placed role extreme events altering exposure potential biodiversity. also address responses plants increased temporal variability radiation, change (e.g. drought, temperature) crops, driving breakdown organic matter from dead plant material (i.e. litter) biocides (pesticides herbicides). Our assessment indicates that interact various ways affect structure function ecosystems, by protecting layer, Protocol continues play a vital maintaining healthy, diverse land sustain life Earth. Furthermore, its Kigali Amendment mitigating some negative consequences limiting emissions greenhouse gases carbon sequestration vegetation pool.

Язык: Английский

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Microbe-mediated organic fertilization increases insect predator attraction upon fruit damage in olive trees

Soil Ecology Letters, Год журнала: 2025, Номер 7(1)

Опубликована: Янв. 4, 2025

Abstract Revalorized olive waste impacts root microbiome. Root microbiome modulates plant-induced defense. Insect’s exudate simulates the pest attack. The objective of this study was to investigate combined effect soil amendments and attack on defense their impact a biological control agent’s behavior. effects mill wastes revalorized through vermicomposting aboveground tri-trophic interactions among trees ( Olea europaea ), seed-feeder, Prays oleae , its natural predator, Chrysoperla carnea were evaluated. findings demonstrate that nitrogen organic carbon levels, in conjunction with fungal diversity functionality within roots, exert significant influence volatile compounds emitted by plant under are most appealing C. . Moreover, attractiveness aerial volatiles found correlate content taxonomic functional both bacteria fungi system. It is worthy note three particular compounds, namely 5-hepten-2-one-6-methyl, acetic acid nonanal, consistently observed attract These highlight potential enhance strategies. Future research should prioritise validation greenhouse large-scale field trials assessment practical applications management programmes.

Язык: Английский

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Induction of plant defenses: the added value of zoophytophagous predators

Journal of Pest Science, Год журнала: 2022, Номер 95(4), С. 1501 - 1517

Опубликована: Май 13, 2022

Язык: Английский

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The Dual Benefit of Plant Essential Oils against Tuta absoluta

Plants, Год журнала: 2023, Номер 12(5), С. 985 - 985

Опубликована: Фев. 21, 2023

Plant essential oils (PEOs) are being studied as a potential alternative to synthetic pesticides in agriculture. PEOs have the control pests both directly, by toxic or repellent pests, and indirectly, activating plant's defense mechanisms. In this study, effectiveness of five (Achillea millefolium, Allium sativum, Rosmarinus officinallis, Tagetes minuta, Thymus zygis) on controlling Tuta absoluta their impact predator Nesidiocoris tenuis was examined. The study revelead that from A. millefolium sativum-sprayed plants significantly reduced number T. absoluta-infested leaflets did not affect establishment reproduction N. tenuis. Additionally, spraying sativum increased expression genes plants, triggering release herbivory-induced plant volatiles (HIPVs), such C6 green leaf volatiles, monoterpenes, aldehydes, which can be messengers tritrophic interactions. results suggest provide dual benefit for arthropod they directly exhibit toxicity against these while also Overall, provides new insights into using sustainable solution diseases agriculture, reducing promoting use natural predators.

Язык: Английский

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Transcriptomics and Metabolomics Analyses Reveal High Induction of the Phenolamide Pathway in Tomato Plants Attacked by the Leafminer Tuta absoluta

Metabolites, Год журнала: 2022, Номер 12(6), С. 484 - 484

Опубликована: Май 26, 2022

Tomato plants are attacked by a variety of herbivore pests and among them, the leafminer Tuta absoluta, which is currently major threat to global tomato production. Although commercial susceptible T. absoluta attacks, better understanding defensive plant responses this pest will help in defining resistance traits broaden range agronomic levers that can be used for an effective integrated management strategy over crop cycle. In study, we developed integrative approach combining untargeted metabolomic transcriptomic analyses characterize local systemic metabolic young larvae herbivory. From analyses, response appeared both systemic, with infested leaves being much more intense than other parts plant. The main was massive accumulation phenolamides great structural diversity, including rare derivatives composed spermine dihydrocinnamic acids. family specialized metabolites supported data, showed induction phenylpropanoid polyamine precursor pathways. Moreover, our data identified two genes strongly induced herbivory, functionally characterized as putrescine hydroxycinnamoyl transferases. They catalyze biosynthesis several phenolamides, caffeoylputrescine. Overall, study provided new mechanistic clues tomato/T. interaction.

Язык: Английский

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Eliciting Plant Defenses Through Herbivore-Induced Plant Volatiles’ Exposure in Sweet Peppers

Frontiers in Ecology and Evolution, Год журнала: 2022, Номер 9

Опубликована: Янв. 4, 2022

Insect herbivory activates plant defense mechanisms and releases a blend of herbivore-induced volatiles (HIPVs). These volatile compounds may be involved in plant-plant communication induce response undamaged plants. In this work, we investigated whether the exposure sweet pepper plants to HIPVs [ (Z) -3-hexenol, -3-hexenyl acetate, propanoate, butanoate, hexyl methyl salicylate jasmonate] immune system. For this, healthy were individually exposed each above mentioned over 48 h. The expression jasmonic acid salicylic related genes was quantified. Here, show that all tested induced defenses by upregulating signaling pathway. Additionally, Frankliniella occidentalis , key pest, Orius laevigatus main natural enemy F. HIPV-exposed studied Y-tube olfactometer. Only propanoate repelled whereas O. showed strong preference jasmonate. Our results act as elicitors enhancing defensive pathways. We anticipate our starting point for integrating HIPVs-based approaches pest management systems which provide sustainable strategy manage insect pests horticultural

Язык: Английский

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Changes in plant responses induced by an arthropod influence the colonization behavior of a subsequent herbivore

Pest Management Science, Год журнала: 2021, Номер 77(9), С. 4168 - 4180

Опубликована: Май 3, 2021

Abstract BACKGROUND Plants in nature can be sequentially attacked by different arthropod herbivores. Feeding one species may induce plant‐defense responses that might affect the performance of a later‐arriving herbivorous species. Understanding these interactions help developing pest‐management strategies. In tomato, sweet‐potato whitefly Bemisia tabaci and two‐spotted spider mite Tetranychus urticae are key pests frequently cohabit on same plant. We studied whether colonization either facilitate or impede later tomato plants conspecific heterospecific individuals. RESULTS B. females showed strong preference for increased oviposition previously colonized conspecifics. contrast, infested with T. repelled reduced their rate 86%. Although no between conspecific‐infested uninfested plants, we observed 50% reduction number eggs laid plants. Both arthropods up‐regulated expression genes involving jasmonic acid abscisic pathways, increasing emissions fatty‐acid derivatives, but only related to salicylic pathway total amount phenylpropanoids released. Terpenoids were most abundant compounds volatile blends; many terpenoids emitted at rates, which have influenced arthropods' host selection. CONCLUSION Our results indicate infestation facilitated subsequent infestations conspecifics mites, while promoted herbivore‐induced resistance. Based both molecular behavioral findings, novel sustainable strategy is discussed.

Язык: Английский

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Tomato transcriptomic response to Tuta absoluta infestation

BMC Plant Biology, Год журнала: 2021, Номер 21(1)

Опубликована: Авг. 4, 2021

Abstract Background The South America pinworm, Tuta absoluta , is a destructive pest of tomato that causes important losses worldwide. Breeding resistant/tolerant cultivars could be an effective strategy for T. management but, despite the economic importance tomato, very limited information available about its response to this treat. To elucidate defense mechanisms herbivore feeding comparative analysis was performed between tolerant and susceptible cultivated at both morphological transcriptome level highlight constitutive leaf barriers, molecular biochemical counter effect attack. Results genotype showed enhanced barrier possibly as result higher density trichomes increased inducible reactions upon mild infestation thanks activation/repression key transcription factors regulating genes involved in cuticle formation cell wall strength well antinutritive enzymes, production chemical toxins bioactive secondary metabolites. Conclusions Overall, our findings suggest resilience pinworm achieved by combined induced system. A well-orchestrated modulation plant regulation ensure trade-off needs fitness costs. Our finding can further exploited developing cultivars, acting component integrated more sustainable production.

Язык: Английский

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Mechanistic perceptions of the elicitorial resources from the marine kingdom - A paradigm shift in plant defense against insect pests

Biocatalysis and Agricultural Biotechnology, Год журнала: 2024, Номер 58, С. 103141 - 103141

Опубликована: Апрель 4, 2024

Язык: Английский

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