Explaining evolution of plant communication by airborne signals

Heil, Martin; Karban, Richard

doi:10.1016/j.tree.2009.09.010

Cited by 501 publications

(522 citation statements)

References 89 publications

Supporting

Mentioning

507

Contrasting

Unclassified

Order By: Relevance

“…There is growing evidence that plants respond to microbial attack by releasing volatiles, which initiates defense mechanisms by signaling within as well as possibly between plants ( Kesselmeier and Staudt, 1999). Volatile organic compounds released from inoculated plants induce the resistance to fungi in Arabidopsis (Kishimoto et al, 2006), but little is known about plant communication in conifers (Heil and Karban, 2009). The increased emission of 3-carene after fungal inoculation in our study might be due to allocation of that compound towards the inoculation site by the plant, thus fighting the fungus and the wound facilitating its release.…”

Section: Discussionmentioning

confidence: 69%

Effect of Water Stress and Fungal Inoculation on Monoterpene Emission from an Historical and a New Pine Host of the Mountain Pine Beetle

et al. 2011

View full text Add to dashboard Cite

The mountain pine beetle (Dendroctonus ponderosae, MPB) has killed millions of lodgepole pine (Pinus contorta) trees in Western Canada, and recent range expansion has resulted in attack of jack pine (Pinus banksiana) in Alberta. Establishment of MPB in the Boreal forest will require use of jack pine under a suite of environmental conditions different from those it typically encounters in its native range. Lodgepole and jack pine seedlings were grown under controlled environment conditions and subjected to either water deficit or well watered conditions and inoculated with Grosmannia clavigera, a MPB fungal associate. Soil water content, photosynthesis, stomatal conductance, and emission of volatile organic compounds (VOCs) were monitored over the duration of the six-week study. Monoterpene content of bark and needle tissue was measured at the end of the experiment. β-Phellandrene, the major monoterpene in lodgepole pine, was almost completely lacking in the volatile emission profile of jack pine. The major compound in jack pine was α-pinene. The emission of both compounds was positively correlated with stomatal conductance. 3-Carene was emitted at a high concentration from jack pine seedlings, which is in contrast to monoterpene profiles of jack pine from more southern and eastern parts of its range. Fungal inoculation caused a significant increase in total monoterpene emission in water deficit lodgepole pine seedlings right after its application. By 4 weeks into the experiment, water deficit seedlings of both species released significantly lower levels of total monoterpenes than well watered seedlings. Needle tissue contained lower total monoterpene content than bark. Generally, monoterpene tissue content increased over time independent from any treatment. The results suggest that monoterpenes that play a role in pine-MPB interactions differ between lodgepole and jack pine, and also that they are affected by water availability.

show abstract

Section: Discussionmentioning

confidence: 69%

Effect of Water Stress and Fungal Inoculation on Monoterpene Emission from an Historical and a New Pine Host of the Mountain Pine Beetle

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Instead, they rely on volatile cues that are emitted at the site of attack to coordinate systemic defenses against further herbivory [27 ]. Volatile cues that likely evolved to coordinate systemic defenses of individuals can also be sensed by neighboring plants [28]. Sagebrush plants were found to respond more strongly to volatiles from genetically identical (self) tissues than genetically different tissues, and to cues from relatives more than strangers [29,30].…”

Section: Rupture Of Trichomementioning

confidence: 99%

A comparison of plants and animals in their responses to risk of consumption

Karban

Orrock

Preisser

et al. 2016

Current Opinion in Plant Biology

Self Cite

View full text Add to dashboard Cite

“…The well-known neighbouring SAR transmission system is an indirect form of defence involving transmission of volatile organic compounds (VOCs) and a common root-root network via fungal mycelia (Heil and Karban, 2010;Song et al, 2010). First, following wounding by a herbivore, certain plant tissues produce VOCs such as methyl jasmonate (MeJA), which plays an important role as an alarm signal for undamaged neighbours, resulting in increased levels of toxin and repellent production or the attraction of natural enemies of the herbivore (Paré and Tumlinson, 1999;Kessler et al, 2006;Heil, 2014).…”

Section: Introductionmentioning

confidence: 99%

Root-mediated signal transmission of systemic acquired resistance against above-ground and below-ground pathogens

Song

Sim

Kim

et al. 2016

Ann Bot

View full text Add to dashboard Cite

Background and Aims Plants modulate defence signalling networks in response to various biotic stresses via inter-organ communications. The root-mediated transmission of systemic acquired resistance (SAR) against soilborne and air-borne plant pathogens from SAR-induced plants to neighbouring plants subjected to local chemical and pathogen treatments was evaluated.Methods The first two plants out of ten Nicotiana benthamiana seedlings were pre-treated with the SARtriggering chemical benzothiadiazole (BTH). All ten seedlings were then challenged with two pathogenic bacteria, i.e. the root (bacterial wilt) pathogen Ralstonia solanacearum and the leaf (wildfire) pathogen Pseudomonas syringae pv. tabaci, at 7 d after SAR induction.Key Results Disease severity was noticeably lower in BTH-pre-treated plants than in the control. Surprisingly, two plants located next to BTH-treated plants exhibited reduced disease symptoms indicating that SAR signal transmission occurred through the root system. Determinant(s) secreted from the root system were search for and it was found that salicylic acid (SA) is a major molecule involved in SAR transmission through the root. Analysis of the expression of the defence-related genes N. benthamiana pathogenesis-related gene 1a (NbPR1a) and NbPR2 confirmed that BTH treatment elicited SAR via root-root transmission between plants. Plants with knock-down of the multiple resistance component SGT1 and SA biosynthesis-related gene ICS1 by Tobacco rattle virus-mediated virus-induced gene silencing exhibited a lack of root-mediated SAR transmission. The biological relevance of this finding was validated by challenge with the SAR-inducing avirulent pathogen P. syringae pv. syringae instead of BTH, which produced similar results.Conclusions Our findings demonstrated that SAR is transmissible through the root system from SAR-triggered plants to neighbouring plants.

show abstract

Explaining evolution of plant communication by airborne signals

Cited by 501 publications

References 89 publications

Effect of Water Stress and Fungal Inoculation on Monoterpene Emission from an Historical and a New Pine Host of the Mountain Pine Beetle

Effect of Water Stress and Fungal Inoculation on Monoterpene Emission from an Historical and a New Pine Host of the Mountain Pine Beetle

A comparison of plants and animals in their responses to risk of consumption

Root-mediated signal transmission of systemic acquired resistance against above-ground and below-ground pathogens

Contact Info

Product

Resources

About