Role of Plant Volatiles in Defense and Communication

Meena, Rahul Kumar; Jangra, Sumit; Wadhwa, Zeenat; Wati, Monika Leela

doi:10.20546/ijcmas.2017.604.033

Cited by 13 publications

(19 citation statements)

References 59 publications

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“…The adjustment might include increased uptake resistances for air pollution or the production of compounds that are difficult to digest by herbivores. In addition, also BVOCs, i.e., mono-and sesquiterpenes can reduce the effectiveness of induced stressors as they can detoxify ozone already within the leaf (Vickers et al, 2009) and might directly repel herbivores or indirectly reduce their impact by attracting predators (Meena et al, 2017;Turlings and Erb, 2018). In general, very strong or prolonged induction is also likely to pose a feedback to stress-induced emissions since it decreases the amount of emitting tissue (i.e., by herbivore feeding) and damages the photosynthetic process (i.e., due to ozone) thus leading to supply limitation (Visakorpi et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Another reason may be that the same substances that are used for repair of and protection against oxidative stress also serve for signaling in order to repel parasites or attract enemies of herbivores (Cape, 2008;Loreto and Schnitzler, 2010). In fact, many of the volatile terpenes that serve as antioxidative defenses, are also non-specific toxins active against a wide range of organisms (bacteria, fungi, plants, and animals) (Meena et al, 2017). Nevertheless, the large variety of the emitted compounds and the species-specific as well as stress-specific emission intensity results in a multitude of different possible blends (Kravitz et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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A New Modeling Approach for Estimating Abiotic and Biotic Stress-Induced de novo Emissions of Biogenic Volatile Organic Compounds From Plants

Grote

Sharma

Ghirardo

et al. 2019

Front. For. Glob. Change

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The emission of biogenic volatile organic compounds (BVOCs) is usually thought to depend on species-specific emission capacities that vary with seasonal and phenological conditions. Actual-so called constitutive-emissions are then calculated from prevailing temperature and radiation. However, various abiotic and biotic stressors such as ozone, extreme radiation and temperature conditions, as well as wounding e.g., from insect feeding, can lead to de-novo emissions of stress-induced BVOCs (sBVOCs) that may excel constitutive emissions by more than an order of magnitude. These emissions often have a considerable different compound composition and are short-lived but can prolong under continuous stress for quite some time. Thus, they may easily have a large impact on overall regional BVOC emissions. However, sBVOCs are generally not considered in models since up to date no consistent mechanism has been proposed. This manuscript suggests a new mechanism based on the finding that sBVOCs originate from a handful of biosynthetic pathways which synthesize compounds in the groups of monoterpenes, sesquiterpenes, and green leave volatiles, as well as methyl salicylate, ethanol/acetaldehyde, methanol/formaldehyde, and acetone. Isoprene is also considered but since it is often constitutively emitted, the specific role of stress induction is difficult to determine for this compound. A function is proposed that describes the production of all de-novo sBVOCs sufficiently well and scales with stress intensity. It is hypothesized that the response delay and the form of the function is specific for the production pathway and valid for ozone as well as wounding (herbivory) induced stress. Model parameters are then derived from pooled literature data based on a metaanalysis of suitable induction-response measurements of different plant species. The overall emission amount derives from the intensity and frequency of the stress impulse. We present a number of literature studies that are used to parameterize the new model as well as a selection of evaluations for single-and multiple-stress inductions. Furthermore, coupling and interaction with constitutive emission models as well as limitations and possible further developments are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A New Modeling Approach for Estimating Abiotic and Biotic Stress-Induced de novo Emissions of Biogenic Volatile Organic Compounds From Plants

Grote

Sharma

Ghirardo

et al. 2019

Front. For. Glob. Change

View full text Add to dashboard Cite

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“…thaliana(Boachonet al 2019) also showed that genes participating in defence are mainly active during early stages of development and in young tissues of plants. This is a time period when plants need to supply energy for growth and defensive strategies concurrently, which is difficult because each of these two pathways requires high energy expenditure (Meena et al et al . 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Meanwhile, HIPVs, including mint-derived volatiles such as limonene, 1,8-cineole, and carvone, can also attract species that predate on herbivores, such as predatory mites that feed on two-spotted spider mites (Togashi et al 2019). Therefore, volatile compounds may be part of a defence system used directly or indirectly by plants to protect themselves via tritrophic interactions (Meena et al . 2017).…”

Section: Introductionmentioning

confidence: 99%

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Gene co-expression modulating terpene metabolism is associated with plant anti-herbivore defence during initial flowering stages

Liu

Dong

et al.

Authorea

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To protect themselves from herbivore attacks, especially during early developmental stages, plants produce volatiles possessing various ecological and physiological functions. Here, we identified three genes cloned from Lavandula angustifolia. These genes, designated as LaTPS7, LaTPS8, and LaCYP71D582, were hypothesized to be active in plant defense during early developmental stages. The in-vitro assays showed LaTPS7 produced eight compounds including camphene, myrcene, limonene etc. and LaTPS8 catalyzed nine volatiles from α-pinene, sylvestrene to fenchol etc. using geranyl diphosphate (GPP) and nerolidyl diphosphate (NPP) as substrate separately. However, LaTPS7 present in plastids only, synthesized limonene within Nicotiana benthamiana. Limonene was then converted into carveol by LaCYP71D582 present in the endoplasmic reticulum. LaTPS8, also located in plastids, synthesized α-pinene and sylvestrene. Odour response of aphids (Myzus persicae) and ladybugs (Harmonia axyridis) showed that volatiles from transgenic tobacco leaves repelled aphids and attracted ladybugs. LaTPS7 promoter GUS stain assay in Arabidopsis thaliana showed that LaTPS7 displayed a wound-induced expression in leaves. Together, our findings show that these compounds and gene-expression pattern played important roles in protecting plants during vulnerable stages. More practically, these plant tactics can be exploited in agriculture to decrease the use of insecticides, thereby contributing to improved human and environmental health.Gene co-expression modulating terpene metabolism is associated with plant anti-herbivore defence during initial flowering stagesZhengyi Ling 1,

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Metabolic Mechanisms of Host Species Against Citrus Huanglongbing (Greening Disease)

Rao

Ding

Wang

et al. 2018

Critical Reviews in Plant Sciences

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Role of Plant Volatiles in Defense and Communication

Cited by 13 publications

References 59 publications

A New Modeling Approach for Estimating Abiotic and Biotic Stress-Induced de novo Emissions of Biogenic Volatile Organic Compounds From Plants

A New Modeling Approach for Estimating Abiotic and Biotic Stress-Induced de novo Emissions of Biogenic Volatile Organic Compounds From Plants

Gene co-expression modulating terpene metabolism is associated with plant anti-herbivore defence during initial flowering stages

Metabolic Mechanisms of Host Species Against Citrus Huanglongbing (Greening Disease)

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