Plant metabolomics to the benefit of crop protection and growth stimulation

Bertrand, Cédric; González-Coloma⊥, Azucena; Prigent‐Combaret, Claire

doi:10.1016/bs.abr.2020.11.002

Cited by 13 publications

(13 citation statements)

References 98 publications

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“…Essential oils (EOs) can act as priming molecules both in biotic and abiotic plant stress responses ( Bertrand et al, 2021 ). EOs can be an effective and sustainable tool to control seedborne diseases ( Klein et al, 2017 ; Spadaro et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Essential Oils Prime Epigenetic and Metabolomic Changes in Tomato Defense Against Fusarium oxysporum

et al. 2022

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In this work, we studied the direct and indirect plant protection effects of an Artemisia absinthium essential oil (AEO) on tomato seedlings against Fusarium oxysporum sp. oxysporum radicis lycopersici (Fol). AEO exhibited a toxic effect in vitro against Fol. Additionally, tomato seedlings germinated from seeds pretreated with AEO and grown hydroponically were protected against Fol. Plant disease symptoms, including, water and fresh weight loss, tissue necrosis, and chlorosis were less pronounced in AEO-treated seedlings. AEO also contributed to plant defenses by increasing callose deposition and the production of reactive oxygen species (ROS) on seed surfaces without affecting seed germination or plant development. The essential oil seed coating also primed a durable tomato seedling defense against the fungus at later stages of plant development. RNA-seq and metabolomic analysis performed on seedlings after 12 days showed that the AEO treatment on seeds induced transcriptomic and metabolic changes. The metabolomic analysis showed an induction of vanillic acid, coumarin, lycopene, oleamide, and an unknown metabolite of m/z 529 in the presence of Fol. The StNRPD2 gene, the second largest component of RNA polymerases IV and V directly involved in de novo cytosine methylation by RNA-directed DNA methylation (RdDM), was highly induced in the presence of AEO. The host methionine cycle (MTC) controlling trans-methylation reactions, was also altered by AEO through the high induction of S-adenosyl methionine transferases (SAMts). Our results suggest that AEO treatment could induce de novo epigenetic changes in tomato, modulating the speed and extent of its immune response to Fol. The EO-seed coating could be a new strategy to prime durable tomato resistance, compatible with other environmentally friendly biopesticides.

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Section: Introductionmentioning

confidence: 99%

Essential Oils Prime Epigenetic and Metabolomic Changes in Tomato Defense Against Fusarium oxysporum

et al. 2022

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“…The odorants were selected based on chemical structure and ecological relevance. Therefore, we chose a very diverse odor panel that consisted of a food odorant – hexanol 29 , a sexual maturation pheromone – 4-vinyl anisole 44 , and a putative aggregation pheromone – benzaldehyde 30 . In addition, we included an acid – octanoic acid, a base – ammonium, and an alcohol – 1-nonanol in our experiments.…”

Section: Methodsmentioning

confidence: 99%

Serotonergic amplification of odor-evoked neural responses maps onto flexible behavioral outcomes

Bessonova

Raman

2023

Preprint

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Behavioral responses to many odorants are not fixed but vary based on organismal needs. How such variations arise and the role of various neuromodulators in achieving flexible neural-to-behavioral mapping is not fully understood. In this study, we examined how serotonin modulates the neural and behavioral responses to odorants in locusts (Schistocerca americana). Our results indicated that serotonin can increase or decrease appetitive behavior in an odor-specific manner. On the other hand, in the antennal lobe, serotonergic modulation non-selectively enhanced odor-evoked response strength but left the temporal features and the combinatorial response profiles unperturbed. This result suggests that serotonin facilitates sensitive and robust recognition of odorants. Nevertheless, the uniform neural response amplification appeared to be at odds with the observed stimulus-specific behavioral modulation. We show that a simple linear model with neural ensembles segregated based on behavioral relevance is sufficient to explain the serotonin-mediated flexible mapping between neural and behavioral responses.

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“…On the other hand, the number of plant growth promoting bacteria (PGPB) used in various formulation is quite low when considering their great biodiversity [47]. PGPB and symbiotic microorganisms may act through various mechanisms related to hormone release or changes in hormonal balance within plants, the improvement in nutrients availability, the biosynthesis of volatile organic compounds, and the increased tolerance to abiotic stressors through the induction of systemic tolerance [17,[48][49][50]. The main negative effects of abiotic stressors (e.g., salinity, drought) on plants are related to changes in endogenous hormones balance (e.g., ethylene production, increase of absicic acid and decrease of cytokinins levels) which results to reduced shoot and root growth as a means to plant homeostasis regulation [51].…”

Section: Biostimulant Categoriesmentioning

confidence: 99%

“…In intensive cropping sectors such as in horticulture and floriculture, the biostimulants can also increase nutrient use efficiency, partly substitute the chemical fertilizer inputs and ameliorate the yield and quality of crops [14][15][16]. However, biostimulants are not only considered as important substitutes to mineral fertilizers, but also notable in organic farming systems within sustainable crop production management [17]. Increased root and shoot growth, improved resistance against stressors, better root growth potential, and reduction in nitrogen fertilizer inputs are some of the most noteworthy impacts of biostimulant application in sustainable agriculture system [1].…”

Section: Introductionmentioning

confidence: 99%

Biostimulants Application: A Low Input Cropping Management Tool for Sustainable Farming of Vegetables

et al. 2021

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Biostimulants, are a diverse class of compounds including substances or microorganism which have positive impacts on plant growth, yield and chemical composition as well as boosting effects to biotic and abiotic stress tolerance. The major plant biostimulants are hydrolysates of plant or animal protein and other compounds that contain nitrogen, humic substances, extracts of seaweeds, biopolymers, compounds of microbial origin, phosphite, and silicon, among others. The mechanisms involved in the protective effects of biostimulants are varied depending on the compound and/or crop and mostly related with improved physiological processes and plant morphology aspects such as the enhanced root formation and elongation, increased nutrient uptake, improvement in seed germination rates and better crop establishment, increased cation exchange, decreased leaching, detoxification of heavy metals, mechanisms involved in stomatal conductance and plant transpiration or the stimulation of plant immune systems against stressors. The aim of this review was to provide an overview of the application of plant biostimulants on different crops within the framework of sustainable crop management, aiming to gather critical information regarding their positive effects on plant growth and yield, as well as on the quality of the final product. Moreover, the main limitations of such practice as well as the future prospects of biostimulants research will be presented.

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Plant metabolomics to the benefit of crop protection and growth stimulation

Cited by 13 publications

References 98 publications

Essential Oils Prime Epigenetic and Metabolomic Changes in Tomato Defense Against Fusarium oxysporum

Essential Oils Prime Epigenetic and Metabolomic Changes in Tomato Defense Against Fusarium oxysporum

Serotonergic amplification of odor-evoked neural responses maps onto flexible behavioral outcomes

Biostimulants Application: A Low Input Cropping Management Tool for Sustainable Farming of Vegetables

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