Root volatiles in plant–plant interactions I: High root sesquiterpene release is associated with increased germination and growth of plant neighbours

Gfeller, Valentin; Huber, Meret; Förster, Christiane; Huang, Wei; Köllner, Tobias G.; Erb, Matthias

doi:10.1111/pce.13532

Cited by 66 publications

(60 citation statements)

References 70 publications

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“…In both studies, ( E )‐β‐caryophyllene was among the volatiles that modified the neighbor plant‐herbivore interaction . Another interesting phenomenon is that volatiles emitted from C. stoebe roots, including ( E )‐β‐caryophyllene, also can affect the composition of the sympatric plant community by promoting germination and growth of neighboring plants . Hence, volatiles emitted from plants play multiple roles in the interactions among organisms belonging to the same or different trophic levels.…”

Section: Discussionmentioning

confidence: 93%

Overexpression of the caryophyllene synthase gene GhTPS1 in cotton negatively affects multiple pests while attracting parasitoids

Zhang

Huang

et al. 2019

Pest Management Science

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BACKGROUD Volatile terpenes can act as ecological signals to affect insect behavior. It has been proposed that the manipulation of terpenes in plants can help to control herbivore pests. In order to investigate the potential pest management function of (E)‐β‐caryophyllene in cotton plants, the (E)‐β‐caryophyllene synthase gene (GhTPS1) was inserted into Gossypium hirsutum variety R15 to generate overexpression lines. RESULTS Four GhTPS1‐transgenic lines were generated, and GhTPS1 expression in transgenic L18 and L46 lines was 3‐5‐fold higher than in R15 plants. The transgenic L18 and L46 lines also emitted significantly more (E)‐β‐caryophyllene than R15. In laboratory bioassays, L18 and L46 plants reduced pests Apolygus lucorum, Aphis gossypii and Helicoverpa armigera, and attracted parasitoids Peristenus spretus and Aphidius gifuensis, but not Microplitis mediator. In open‐field trials, L18 and L46 plants reduced A. lucorum, Adelphocoris suturalis and H. armigera, but had no significant effects on predators. CONCLUSION Our findings suggest that L18 and L46 plants reduce several major hemipteran and lepidopteran cotton pests, whereas, two parasitoids P. spretus and A. gifuensis, were attracted by L18 and L46 plants. This study shows that overexpressing GhTPS1 in cotton may help to improve pest management in cotton fields. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 93%

Overexpression of the caryophyllene synthase gene GhTPS1 in cotton negatively affects multiple pests while attracting parasitoids

Zhang

Huang

et al. 2019

Pest Management Science

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“…A schematic drawing of the setup is shown in Figure a. The setup is identical to the one used in the companion paper (Gfeller et al, ). Seven weeks after transplantation, a preweighted M .…”

Section: Methodsmentioning

confidence: 99%

“…The chromatograms were processed using default settings for spectral alignment and peak picking of PROGENESIS QI (Nonlinear Dynamics, Newcastle, UK). Features were assigned to individual compounds by retention time and peak shape matching and all VOCs were tentatively identified by the use of the NIST search 2.2 Mass Spectral Library (Gaithersburg, MD, USA) as well as retention time and spectral comparison with pure compounds as described (Gfeller et al, ). During the experiment, the pots were watered every day and rearranged every week.…”

Section: Methodsmentioning

confidence: 99%

“…In a companion paper, we describe that C . stoebe constitutively produces and releases significant amounts of sesquiterpenes into the rhizosphere (Gfeller et al, ). Furthermore, we show that C .…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, we show that C . stoebe root VOCs have neutral to positive effects on the germination and growth of different neighbouring species (Gfeller et al, ). Based on these results, we hypothesized that C .…”

Section: Introductionmentioning

confidence: 99%

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Root volatiles in plant–plant interactions II: Root volatiles alter root chemistry and plant–herbivore interactions of neighbouring plants

Huang

Gfeller

Erb

2019

Plant Cell & Environment

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Volatile organic compounds (VOCs) emitted by plant roots can influence the germination and growth of neighbouring plants. However, little is known about the effects of root VOCs on plant–herbivore interactions of neighbouring plants. The spotted knapweed (Centaurea stoebe) constitutively releases high amounts of sesquiterpenes into the rhizosphere. Here, we examine the impact of C. stoebe root VOCs on the primary and secondary metabolites of sympatric Taraxacum officinale plants and the resulting plant‐mediated effects on a generalist root herbivore, the white grub Melolontha melolontha. We show that exposure of T. officinale to C.stoebe root VOCs does not affect the accumulation of defensive secondary metabolites but modulates carbohydrate and total protein levels in T. officinale roots. Furthermore, VOC exposure increases M. melolontha growth on T. officinale plants. Exposure of T. officinale to a major C. stoebe root VOC, the sesquiterpene (E)‐β‐caryophyllene, partially mimics the effect of the full root VOC blend on M. melolontha growth. Thus, releasing root VOCs can modify plant–herbivore interactions of neighbouring plants. The release of VOCs to increase the susceptibility of other plants may be a form of plant offense.

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Effect of plant VOCs and light intensity on growth and reproduction performance of an invasive and a native Phytolacca species in China

Liu

Chen

et al. 2022

Ecology and Evolution

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Invasive plants often pose great threats to the growth of co‐occurring native plant species. Identifying environmental factors that facilitate exotic plant invasion and native species decline are important. In this study, we measured the effects of plant volatile organic compounds (VOCs), light intensity, and their interactions on the growth and reproduction performance of indigenous Phytolacca acinosa, and invasive Phytolacca americana, which has largely replaced the former in China. VOCs of invasive P. americana and low light levels both had negative effects on P. acinosa morphological and reproductive traits (stem length, average leaf number, total number, and length of racemes), and biomass allocation (total biomass, and leaf and flower mass fraction); low light also affected photosynthesis‐related trait (specific leaf area) of P. acinosa. In contrast, VOCs of P. acinosa had no significant effect on P. americana, but low light levels adversely affected its morphological and reproductive traits (stem length, total number, and length of racemes) and biomass allocation (total biomass, stem, and leaf mass fraction). Interactions between plant VOCs and light intensity had no significant effects on P. acinosa or P. americana. Under all experimental treatments, stem length, average leaf area, total number, and length of racemes, Root/Shoot ratio, root and flower mass fraction of P. americana were higher than those of P. acinosa, while average leaf number, specific leaf area, and leaf mass fraction was lower. These results indicated that P. acinosa was sensitive to P. americana VOCs and low light, which might affect the growth of sympatric P. acinosa. P. americana was negatively influenced by low light, but higher plant height and more reproductive organ resource allocation relative to sympatric P. acinosa might contribute to invasion success.

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Root volatiles in plant–plant interactions I: High root sesquiterpene release is associated with increased germination and growth of plant neighbours

Cited by 66 publications

References 70 publications

Overexpression of the caryophyllene synthase gene GhTPS1 in cotton negatively affects multiple pests while attracting parasitoids

Overexpression of the caryophyllene synthase gene GhTPS1 in cotton negatively affects multiple pests while attracting parasitoids

Root volatiles in plant–plant interactions II: Root volatiles alter root chemistry and plant–herbivore interactions of neighbouring plants

Effect of plant VOCs and light intensity on growth and reproduction performance of an invasive and a native Phytolacca species in China

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