Induced Plant Defenses Against Herbivory in Cultivated and Wild Tomato

Paudel, Sulav; Lin, Po An; Foolad, Majid R.; Ali, Jared G.; Rajotte, Edwin G.; Felton, Gary W.

doi:10.1007/s10886-019-01090-4

Cited by 57 publications

(49 citation statements)

References 103 publications

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“…The results presented here also showed that B. napus emitted the lowest amount of constitutive volatiles but had the greatest diversity of HIPVs. This result is in agreement with a recent study comparing plant defences in wild and cultivated tomatoes (Paudel et al 2019 ). They found that all tomato species (cultivated and wild) responded to herbivore-feeding by increasing their level of volatile emissions.…”

Section: Discussionsupporting

confidence: 94%

Does ozone exposure affect herbivore-induced plant volatile emissions differently in wild and cultivated plants?

Brosset

Saunier

Kivimäenpää

et al. 2020

Environ Sci Pollut Res

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Concentrations of tropospheric ozone have more than doubled in the Northern Hemisphere since pre-industrial times. Plant responses to single abiotic or biotic stresses, such as ozone exposure and herbivore-feeding, have received substantial attention, especially for cultivated plants. Modern cultivated plants have been subjected to selective breeding that has altered plant chemical defences. To understand how ozone might affect plant responses to herbivore-feeding in wild and cultivated plants, we studied the volatile emissions of brassicaceous plants after exposure to ambient (~15 ppb) or elevated ozone (80 ppb), with and without Plutella xylostella larvae-feeding. Results indicated that most of the wild and cultivated plants increased volatile emissions in response to herbivore-feeding. Ozone alone had a weaker and less consistent effect on volatile emissions, but appeared to have a greater effect on wild plants than cultivated plants. This study highlights that closely related species of the Brassicaceae have variable responses to ozone and herbivore-feeding stresses and indicates that the effect of ozone may be stronger in wild than cultivated plants. Further studies should investigate the mechanisms by which elevated ozone modulates plant volatile emissions in conjunction with biotic stressors.

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Section: Discussionsupporting

confidence: 94%

Does ozone exposure affect herbivore-induced plant volatile emissions differently in wild and cultivated plants?

Brosset

Saunier

Kivimäenpää

et al. 2020

Environ Sci Pollut Res

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“…Some of these induced effects persist over an entire season, therefore, may have a significant impact on overall crop losses (Paudel et al 2014 ; Strapasson et al 2014 ). This emphasizes the importance of induced resistance to estimate the impact of climatic change on insect-plant interactions (Paudel et al 2019 ), which has generally been overlooked in past studies. In contrast to plants’ resistance, tolerance ability as measured by the photosynthesis recovery rate and shoot regrowth increased initially but was compromised at the above-optimum temperatures (T E2 ) (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Fourteen days post caterpillar feeding, the youngest terminal leaflets were randomly selected from plants ( n = 10) from each temperature treatment to compare the density of trichomes on the adaxial leaf surface (Paudel et al 2019 ). Both glandular and non-glandular trichomes were counted.…”

Section: Methodsmentioning

confidence: 99%

Asymmetric Responses to Climate Change: Temperature Differentially Alters Herbivore Salivary Elicitor and Host Plant Responses to Herbivory

et al. 2020

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The effect of temperature on insect-plant interactions in the face of changing climate is complex as the plant, its herbivores and their interactions are usually affected differentially leading to an asymmetry in response. Using experimental warming and a combination of biochemical and herbivory bioassays, the effects of elevated temperatures and herbivore damage (Helicoverpa zea) on resistance and tolerance traits of Solanum lycopersicum var. Better boy (tomato), as well as herbivory performance and salivary defense elicitors were examined. Insects and plants were differentially sensitive towards warming within the experimental temperature range. Herbivore growth rate increased with temperature, whereas plants growth as well as the ability to tolerate stress measured by photosynthesis recovery and regrowth ability were compromised at the highest temperature regime. In particular, temperature influenced the caterpillars' capacity to induce plant defenses due to changes in the amount of a salivary defense elicitor, glucose oxidase (GOX). This was further complexed by the temperature effects on plant inducibility, which was significantly enhanced at an above-optimum temperature; this paralleled with an increased plants resistance to herbivory but significantly varied between previously damaged and undamaged leaves. Elevated temperatures produced asymmetry in species' responses and changes in the relationship among species, indicating a more complicated response under a climate change scenario.

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“…Plant trichomes are epidermal outgrowths that protect plants from the attack of herbivorous insects, which develop even when plants are grown under optimal conditions [ 9 ]. Interestingly, plasticity allows plants to respond to insect attacks by increasing the population and density of trichomes in new growing leaves, stems, and flowers [ 10 ]. Trichomes exhibit high morphological variations and can be divided into several classes, which can be unicellular or multicellular, glandular or glandless, as well as branched or unbranched.…”

Section: Introductionmentioning

confidence: 99%

Comparative transcriptomics analysis revealing flower trichome development during flower development in two Lonicera japonica Thunb. cultivars using RNA-seq

Chang

2020

BMC Plant Biol

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Background Lonicera japonica Thunb. ( L. japonica ) has the functions of clearing away heat and detoxifying, broad-spectrum antibacterial and anti-virus, etc. More than 70% of anti-inflammatory and cold Chinese patent medicines contain L. japonica . Trichomes comprise specialized multicellular structures that have the capacity to synthesize and secrete secondary metabolites and protect plants from biotic and abiotic stresses. The extraction of trichome secretions has great commercial value. However, little is known about the trichome formation mechanism in L. japonica . Therefore, the study of trichome development between different varieties provides a basis for selecting suitable planting resources. Results Here, we present a genome-wide comparative transcriptome analysis between two L. japonica cultivars, toward the identification of biological processes and functional gene activities that occur during flowering stage trichome development. In this study, the density and average lengths of flower trichomes were at their highest during three-green periods (S2). Using the Illumina RNA-Seq method, we obtained 134,304 unigenes, 33,733 of which were differentially expressed. In an analysis of 40 differentially expressed unigenes (DEGs) involved in trichome development, 29 of these were transcription factors. The DEGs analysis of plant hormone signal transduction indicated that plant growth and development may be independent of gibberellin (GA) and cytokinine (CTK) signaling pathways, and plant stress may be independent of jasmonic acid (JA) and ethylene (ET) signaling pathways. We screened several genes involved in the floral biosynthesis of odors, tastes, colors, and plant hormones, and proposed biosynthetic pathways for sesquiterpenoid, triterpenoid, monoterpenoid, flavonoid, and plant hormones. Furthermore, 82 DEGs were assigned to cell cycles and 2616 were predicted as plant resistance genes (PRGs). Conclusions This study provides a comprehensive characterization of the expression profiles of flower development during the seven developmental stages of L. japonica , thereby offering valuable insights into the molecular networks that underly flower development in L. japonica .

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Induced Plant Defenses Against Herbivory in Cultivated and Wild Tomato

Cited by 57 publications

References 103 publications

Does ozone exposure affect herbivore-induced plant volatile emissions differently in wild and cultivated plants?

Does ozone exposure affect herbivore-induced plant volatile emissions differently in wild and cultivated plants?

Asymmetric Responses to Climate Change: Temperature Differentially Alters Herbivore Salivary Elicitor and Host Plant Responses to Herbivory

Comparative transcriptomics analysis revealing flower trichome development during flower development in two Lonicera japonica Thunb. cultivars using RNA-seq

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