Direct and indirect chemical defence of pine against folivorous insects

Mumm, Roland; Hilker, Monika

doi:10.1016/j.tplants.2006.05.007

Cited by 181 publications

(175 citation statements)

References 73 publications

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“…This idea is consistent with our results that showed the pine families with high resistance to H. abietis also showed high resistance to T. pityocampa. Although the defensive traits measured in this study, quantitative resin and phenolics, have been commonly shown to confer resistance to a diverse array of herbivores associated with conifers (see review by Mumm and Hilker (2006)), further studies should address whether trade-offs between other defensive traits not assayed here, that is, individual terpenes and phenolics, proteins, alkaloids and anatomical defences, may be also involved in the success of this exotic pine species in non-indigenous habitats.…”

Section: Resultsmentioning

confidence: 96%

“…For example, the combined expression of multiple defensive traits may work to reduce herbivory and improve plant resistance to a large number of natural enemies more effectively than defensive traits that target individual herbivore species. The possession of multiple and generalist defensive mechanisms is especially relevant for long-lived trees that need to defend themselves against a wide array of herbivores (Mumm and Hilker, 2006). These different enemies are expected to exert diffuse selection pressures on pine trees, favouring the expression of multiple defence compounds, effective against multiple herbivores.…”

Section: Resultsmentioning

confidence: 99%

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Additive genetic variation in resistance traits of an exotic pine species: little evidence for constraints on evolution of resistance against native herbivores

2012

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The apparent failure of invasions by alien pines in Europe has been explained by the co-occurrence of native pine congeners supporting herbivores that might easily recognize the new plants as hosts. Previous studies have reported that exotic pines show reduced tolerance and capacity to induce resistance to those native herbivores. We hypothesize that limited genetic variation in resistance to native herbivores and the existence of evolutionary trade-offs between growth and resistance could represent additional potential constraints on the evolution of invasiveness of exotic pines outside their natural range. In this paper, we examined genetic variation for constitutive and induced chemical defences (measured as non-volatile resin in the stem and total phenolics in the needles) and resistance to two major native generalist herbivores of pines in cafeteria bioassays (the phloem-feeder Hylobius abietis and the defoliator Thaumetopoea pityocampa) using half-sib families drawn from a sample of the population of Pinus radiata introduced to Spain in the mid-19th century. We found (i) significant genetic variation, with moderate-to-high narrow-sense heritabilities for both the production of constitutive non-volatile resin and induced total phenolics, and for constitutive resistance against T. pityocampa in bioassays, (ii) no evolutionary trade-offs between plant resistance and growth traits or between the production of different quantitative chemical defences and (iii) a positive genetic correlation between constitutive resistance to the two studied herbivores. Overall, results of our study indicate that the exotic pine P. radiata has limited genetic constraints on the evolution of resistance against herbivores in its introduced range, suggesting that, at least in terms of interactions with these enemies, this pine species has potential to become invasive in the future. (2010)). For instance, the enemy release hypothesis predicts that exotic plants spread rapidly because they escape from their co-evolved natural enemies in the new range (Elton, 1958;Maron and Vilà, 2001). Accordingly, the evolution of increased competitive ability (EICA) hypothesis states that exotic plant species, with few specialized enemies in their new range, are more competitive than native species because they preferentially allocate resources to growth or reproduction instead of defences (Blossey and Nötzold, 1995). Although both hypotheses have been examined in a diverse array of terrestrial (Bossdorf et al.,

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Additive genetic variation in resistance traits of an exotic pine species: little evidence for constraints on evolution of resistance against native herbivores

2012

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“…β-caryophyllen, a sesquiterpenes, was also found at high rates in larvae gallery resin. Various studies have reported that following ovulation (egg laying) of various insects, the quantity of β-farnesene dramatically increases oleoresin (Mumm and Hilker, 2006;Köpke, 2010). The higher quantity of β-farnesene in trees, which were exposed to ovulation, is considered as a defence mechanism that attracts egg parasites to the tree.…”

Section: Rezultati I Raspravamentioning

confidence: 99%

Chemical Composition of Oleoresin and Larvae Gallery Resin of Pinus Brutia Attacked by Dioryc tria Sylvestrella Ratz.

et al. 2015

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Chemical Composition of Oleoresin and Larvae Gallery Resin of Pinus Brutia Attacked byDioryc tria Sylvestrella Ratz.Kemijski sastav oleorezina i smole galerije ličinki sa stabla bora (Pinus brutia) napadnutoga insektima Dioryctria sylvestrella Ratz. Received -prispjelo: 27. 2. 2014. Accepted -prihvaćeno: 20. 5. 2015 630*813.27; 674.032.475.4 doi:10.5552/drind.2015 Original scientifi c paper • Izvorni znanstveni rad

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“…Oleoresin (a mixture of monoterpenes, resin acids, and neutral compounds) is the most obvious and widespread resin of coniferous trees, providing a chemical and physical barrier against biotic intrusions (Lombardero et al, 2000(Lombardero et al, , 2006. Terpenoids in pine resin are considered to readily interact with cell membranes, which can lead to uncontrolled cell leakage, consequently resulting in cell death of insects (Mumm and Hilker, 2006).…”

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confidence: 99%

Resin Flow, Symptom Development, and Lignin Biosynthesis of Two Pine Species in Response to Wounding and Inoculation with Fusarium circinatum

Kim¹,

Lee²,

Kim³

et al. 2010

The Plant Pathology Journal

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Resin flow, symptom development, and lignin biosynthesis in response to wounding and fungal inoculation were investigated in Pinus rigida and Pinus densiflora. The two-year-old seedling stems were subjected to three types of treatments: (i) wounding without inoculation, (ii) wound-inoculation with a conidial suspension of Fusarium circinatum, and (iii) pre-wounding woundinoculation with the fungus 20 days after the initial wounding. Resin flow from wounding sites was more evident in P. rigida than P. densiflora in all treatments. The wound-inoculation with the fungus induced almost two-fold higher levels of resin flow than the other treatments in both species. The pre-wounding woundinoculation appeared to result in a decrease in pitch canker development in the two pine species. Some reductions in disease severity were observed in the prewounding wound-inoculated P. rigida, showing a mean disease severity of less than 85%, compared with approximately 100% in the wound-inoculated stems. Disease severity was approximately 50% in the woundinoculated P. densiflora, whereas 10% in the pre-wounding wound-inoculated stems. Higher amounts of lignin were found from bark (ca. 40%) than from xylem (ca. 30%). The wound-inoculated bark and the pre-wounding wound-inoculated bark exhibited higher amounts of lignin among the other treatments. These results suggest that the wound-inoculation apparently prompt the increase in resin flow and lignin biosynthesis from the two pine species, and the prior wounding may be involved in decreased disease severity against the further invasion of F. circinatum.

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Direct and indirect chemical defence of pine against folivorous insects

Cited by 181 publications

References 73 publications

Additive genetic variation in resistance traits of an exotic pine species: little evidence for constraints on evolution of resistance against native herbivores

Additive genetic variation in resistance traits of an exotic pine species: little evidence for constraints on evolution of resistance against native herbivores

Chemical Composition of Oleoresin and Larvae Gallery Resin of Pinus Brutia Attacked by Dioryc tria Sylvestrella Ratz.

Resin Flow, Symptom Development, and Lignin Biosynthesis of Two Pine Species in Response to Wounding and Inoculation with Fusarium circinatum

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