Type VI glandular trichome density and their derived volatiles are differently induced by jasmonic acid in developing and fully developed tomato leaves: Implications for thrips resistance

Chen, Gang; Klinkhamer, Peter G. L.; Escobar‐Bravo, Rocío; Leiss, Kirsten A.

doi:10.1016/j.plantsci.2018.08.007

Cited by 55 publications

(50 citation statements)

References 82 publications

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“…Type-VI glandular trichomes are controlled by the JA-pathway (Boughton et al, 2005;Maes and Goossens, 2010) and provide physical and chemical barriers which are known to produce and secrete diverse compounds affecting survival (Frelichowski and Juvik, 2001), growth (Kang et al, 2010) and fecundity (Bleeker et al, 2012) of many herbivorous arthropods. In tomato, artificial application of JA or its volatile derivative methyl jasmonate (MeJA) has been reported to induce the production of type-VI leaf glandular trichomes and volatile emissions (Escobar-Bravo et al, 2017;Chen et al, 2018). Carousel plants contained significantly less type-VI glandular trichomes than Moneymaker, however, we observed no significant effect of seed treatment on trichome densities.…”

Section: Effect Of Ja Seed Treatment On Physicochemical Leaf Propertiescontrasting

confidence: 64%

“…In tomato, foliar application of JA or its volatile derivative methyl jasmonate has been reported to induce the production of type-VI leaf glandular trichomes (Escobar-Bravo et al, 2017;Chen et al, 2018). To investigate whether exogenous JA seed treatment also influenced physical leaf properties, we measured the density of type-VI glandular trichomes following the methodology described by Chen et al (2018). The second terminal leaflet from the third youngest and fully expanded leaf was sampled in 4 weeks old plants grown from mock-and JA-treated seeds.…”

Section: Determination Of Type VI Glandular Trichome Densitymentioning

confidence: 99%

“…PPO activities may have increased after this lag period with a slow decrease thereafter. Furthermore, induced plant responses often decline with age and, in addition, are markedly influenced by leaf developmental stage (Cipollini and Redman, 1999;Chen et al, 2018). Perhaps, 4 weeks post treatment, when PPO activity was measured, induction of defense related enzyms, in the absence of thrips, might thus not be measurable anymore.…”

Section: Figure 5 |mentioning

confidence: 99%

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Cultivar Variation in Tomato Seed Coat Permeability Is an Important Determinant of Jasmonic Acid Elicited Defenses Against Western Flower Thrips

et al. 2020

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Induction of defenses is one of the most widely accepted eco-friendly approaches for management of pests and diseases. Seeds are receptive to resistance-inducing chemicals and could offer broad-spectrum protection at the early stages of development. However, seed treatment with elicitors has previously been shown to differentially influence induced defense responses among cultivars and thus, could hamper commercial exploitation. In this context, the objective of the present study was to evaluate the genotype-dependent ability of jasmonic acid (JA) to induce resistance against western flower thrips (WFT) at the seed stage. We examined the variation in inducibility of resistance in eight commercial tomato cultivars. Causal factors accounting for discrepancies in JA-induced responses at the seed stage were phenotypically and biochemically evaluated. Seed receptivity to exogenous JA appeared to be cultivar dependent. Thrips associated silver damage was only reduced in JA seed-treated plants of cultivar Carousel. Enhancement of resistance, was not associated with activation of defense-related traits such as polyphenol oxidase activity (PPO), trichomes or volatiles. Sulfuric acid scarification, prior to JA seed incubation, significantly augmented the embryonic responsiveness to JA in cv. Moneymaker without an adverse effect on growth. Hence, these results support the hypothesis that seed coat permeability is a key factor for successfully inducing JA mediated thrips defenses. The outcome of our study is of translational value as it creates opportunities for the seed industry to perform pre-treatments on non-responsive cultivars as well as for tomato breeding programs to select for genetic traits that affect seed permeability.

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Section: Effect Of Ja Seed Treatment On Physicochemical Leaf Propertiescontrasting

confidence: 64%

Section: Determination Of Type VI Glandular Trichome Densitymentioning

confidence: 99%

Section: Figure 5 |mentioning

confidence: 99%

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Cultivar Variation in Tomato Seed Coat Permeability Is an Important Determinant of Jasmonic Acid Elicited Defenses Against Western Flower Thrips

et al. 2020

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“…We hypothesized that diminished systemic induction of resistance to thrips when JA is locally applied to basal leaves might be explained by a reduced capacity of these leaves to respond to the hormone treatment. For instance, a reduced inducibility upon herbivory or application of JA in old leaf tissues has been observed in other plant species (Constabel et al 2000;Ohnmeiss and Baldwin 2000;van Dam et al 2001;Köhler et al 2015;Chen et al 2018). Furthermore, Van Dam et al (2001) reported that simulated damage in old leaves did not trigger a strong systemic response when compared to young leaves in wild tobacco (Nicotiana attenuata).…”

Section: Discussionmentioning

confidence: 93%

Site-dependent induction of jasmonic acid-associated chemical defenses against western flower thrips in Chrysanthemum

Chen

Kim

Klinkhamer

et al. 2019

Planta

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“…Glandular trichomes are characterized by the ability to synthesize, store and secrete a vast array of secondary metabolites, mostly terpenoids and phenylpropanoids, making them appealing platforms for biotechnological applications (Tissier, 2012; Huchelmann et al , 2017). Furthermore, considerable interest has arisen in exploiting glandular trichomes as a breeding tool to increase resistance to herbivory and thus avoid excessive use of pesticides (Simmons and Gurr, 2005; Maluf et al , 2007; Tian et al , 2014; Chen et al , 2018). Thus, research has focused on identifying metabolic pathways within glandular trichomes (Besser et al , 2009; Sallaud et al , 2009; Bleeker et al , 2012; Balcke et al , 2017; Leong et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

Gasparini

Souto

Silva

et al. 2020

Preprint

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Background and aimsTrichomes are epidermal structures with an enormous variety of ecological functions and economic applications. Glandular trichomes produce a rich repertoire of secondary metabolites, whereas non-glandular trichomes create a physical barrier against biotic and abiotic stressors. Intense research is underway to understand trichome development and function and enable breeding of more resilient crops. However, little is known on how enhanced trichome density would impinge on leaf photosynthesis, gas exchange and energy balance.MethodsPrevious work has compared multiple species differing in trichome density, instead here we analyzed monogenic trichome mutants in a single tomato genetic background (cv. Micro-Tom). We determined growth parameters, leaf spectral properties, gas exchange and leaf temperature in the hairs absent (h), Lanata (Ln) and Woolly (Wo) trichome mutants.Key resultsShoot dry mass, leaf area, leaf spectral properties and cuticular conductance were not affected by the mutations. However, the Ln mutant showed increased carbon assimilation (A) possibly associated with higher stomatal conductance (gs), since there were no differences in stomatal density or stomatal index between genotypes. Leaf temperature was furthermore reduced in Ln in the early hours of the afternoon.ConclusionsWe show that a single monogenic mutation can increase glandular trichome density, a desirable trait for crop breeding, whilst concomitantly improving leaf gas exchange and reducing leaf temperature.HIGHLIGHTA monogenic mutation in tomato increases trichome density and optimizes gas exchange and leaf temperature

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Type VI glandular trichome density and their derived volatiles are differently induced by jasmonic acid in developing and fully developed tomato leaves: Implications for thrips resistance

Cited by 55 publications

References 82 publications

Cultivar Variation in Tomato Seed Coat Permeability Is an Important Determinant of Jasmonic Acid Elicited Defenses Against Western Flower Thrips

Cultivar Variation in Tomato Seed Coat Permeability Is an Important Determinant of Jasmonic Acid Elicited Defenses Against Western Flower Thrips

Site-dependent induction of jasmonic acid-associated chemical defenses against western flower thrips in Chrysanthemum

TheLanatatrichome mutation increases stomatal conductance and reduces leaf temperature in tomato

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