Mono- and sesquiterpene variation in Pinus caribaea needles and its relationship to Atta laevigata herbivory

Barnola, Luis Felipe; Hasegawa, Masahisa; Cedeño, Aragua

doi:10.1016/0305-1978(94)90039-6

Cited by 24 publications

(20 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This divergence was based on the presence of three monoterpenoids and one unidentiÞed sesquiterpene unique to plants that had been browsed; unbrowsed plants had no compounds that were not also found in at least one browsed plant (Table 1). These results suggest that deer herbivory may induce terpene synthesis in spicebush, such as that found in pines after defoliation by leaf-cutter ants (Barnola et al 1994). However, detailed studies of the impact of Sitka black-tailed deer (Odocoileus hemionus sitkensis Merriam) on western redcedar (Thuja plicata Donn ex D.Don) could not isolate induction of terpenes in Þeld (VourcÕh et al 2002) or in greenhouse experiments (VourcÕh et al 2003), suggesting that terpenoid induction by vertebrates may not be widespread.…”

Section: Discussionmentioning

confidence: 95%

White-Tailed Deer Alter Specialist and Generalist Insect Herbivory Through Plant Traits

et al. 2012

View full text Add to dashboard Cite

Within a plant species, leaf traits can vary across environmental, genetic, spatial, and temporal gradients, even showing drastic differences within individuals. Herbivory can also induce variation in leaf morphology, defensive structure, and chemistry including nutritional content. Indirect effects of prior insect herbivory on later herbivores have been well documented, but the induction of trait changes after vertebrate herbivory has been little explored. Here, we examined how browsing of spicebush (Lindera benzoin L.), a dominant understory shrub in eastern mesic forests, by white-tailed deer (Odocoileus virginianus L.) altered plant quality and subsequent foliar herbivory by insects. Browsing history explained ≈ 10% of overall leaf trait variation; regenerated leaves had greater water content and specific leaf area (P = 0.009), but were lower in nitrogen and greater in carbon (P < 0.001), than leaves on unbrowsed plants. However, browsing did not shift terpene chemistry as revealed by GC-MS. In the lab, caterpillars of the specialist spicebush swallowtail (Papilio troilus L.) preferred (P = 0.02) and grew 20% faster (P = 0.02) on foliage from browsed plants; whereas total herbivory in the field, including generalist insect herbivory, was twice as high on unbrowsed plants (P = 0.016). These results suggest that the ecological impacts of deer in forest understories can have cascading impacts on arthropod communities by changing the suitability of host-plants to insect herbivores.

show abstract

Section: Discussionmentioning

confidence: 95%

White-Tailed Deer Alter Specialist and Generalist Insect Herbivory Through Plant Traits

et al. 2012

View full text Add to dashboard Cite

show abstract

“…This lack of detection is based on past studies that have shown no dierence in needle monoterpene concentration for defoliated trees compared to undefoliated controls (Watt et al 1991;Barnola et al 1994). Gershenzon and Croteau (1991) suggest that, at least in mature needles, the lack of induction is due to the existence of developmental constraints on terpenoid synthesis.…”

Section: Introductionmentioning

confidence: 94%

Patterns of induced and constitutive monoterpene production in conifer needles in relation to insect herbivory

1998

View full text Add to dashboard Cite

Studies were conducted to determine whether herbivore-induced synthesis of monoterpenes occurs in the needles of ponderosa pine (Pinus ponderosa Lawson), lodgepole pine (P. contorta Douglas var. latifolia Engelmann), white fir (Abies concolor Lindl. and Gordon) and Engelmann spruce [Picea engelmanii (Parry) Engelm.]. In the needles of all species except Engelmann spruce, simulated herbivory significantly induced the activity of monoterpene cyclases 4-8 days after wounding. In ponderosa pine, real herbivory by last-instar tiger moth larvae (Halisdota ingens Hy. Edwards: Lepidoptera) induced a significantly larger response (4.5-fold increase in monoterpene cyclase activity) than did simulated herbivory (2.5-fold increase). To our knowledge, this is the first report of herbivore-induced increases in monoterpene synthesis in needle tissue. Despite this increase in monoterpene synthesis, we observed no significant increase in total monoterpene pool size in wounded needles compared to controls. Large increases in the rate of monoterpene volatilization were observed in response to wounding. We conclude that the volatile losses caused by tissue damage compensate for herbivore-induced monoterpene synthesis, resulting in no change in pool size. Tiger moth larvae consume ponderosa pine needles in a pattern that begins at the tip and proceeds downward to midway along the needle, at which point they move to an undamaged needle. Constitutive monoterpene concentrations and monoterpene cyclase activities were highest in the lower half of ponderosa pine needles. The monoterpene profile also differed between the upper and lower needle halves, the lower half possessing an additional one to four monoterpene forms. We propose that the increasing gradient in monoterpene concentrations and number of monoterpenes along the needle from tip to base deters feeding beyond the midway point and provides time for the induction of increased cyclase activity and production of new monoterpenes. The induction of new monoterpene synthesis may have a role in replacing monoterpenes lost through damage-induced volatilization and preventing extreme compromise of the constitutive defense system.

show abstract

“…Accordingly, leaf‐cutting ant control methods may involve up to 5% of total planting costs and encompass 75% of the costs of overall pest management efforts (Jaffé, 1986; Vilela, 1986). Because not all conifer species and not all types of leaves of these species are equally susceptible to ants (Barnola et al , 1994), recognizing which tree species are more likely to be affected by them is central to forestry planning.…”

Section: Introductionmentioning

confidence: 99%

Potential impact of the leaf-cutting ant Acromyrmex lobicornis on conifer plantations in northern Patagonia, Argentina

Pérez¹,

Corley²,

Farji‐Brener³

2010

Agricultural and Forest Entomology

View full text Add to dashboard Cite

1 The economic losses associated with crop damage by invasive pests can be minimized by recognizing their potential impact before they spread into new areas or crops. 2 We experimentally evaluated the preferences of the leaf-cutting ant Acromyrmex lobicornis (Hymenoptera: Formicidae) for the most common conifer species commercially planted in northern Patagonia, Argentina. The areas of potential forest interest in this region and the geographical range of this ant overlap. We performed field preference tests and monitored the level of ant herbivory on planted conifer seedlings next to nests. 3 Acromyrmex lobicornis preferred some conifer species and avoided foraging on others. Pseudotsuga menziesii and Austrocedrus chilensis were the less preferred species, Pinus ponderosa and Pinus contorta were the most preferred by A. lobicornis. 4 The item mostly selected by ants was young needles from P. contorta. This species was also the pine mostly defoliated. Seedlings without ant-exclusion showed a mean ± SE of 60 ± 5% defoliation during the sampling period. Pinus ponderosa was less defoliated; control seedlings showed a mean ± SE of 8.5 ± 1% of leaf damage in the sampling period. 5 The present study shows how the use of simple field tests of leaf-cutting ant preferences could allow an improved selection of appropriate conifer species for future plantations in areas where leaf-cutting ants are present.

show abstract

Mono- and sesquiterpene variation in Pinus caribaea needles and its relationship to Atta laevigata herbivory

Cited by 24 publications

References 37 publications

White-Tailed Deer Alter Specialist and Generalist Insect Herbivory Through Plant Traits

White-Tailed Deer Alter Specialist and Generalist Insect Herbivory Through Plant Traits

Patterns of induced and constitutive monoterpene production in conifer needles in relation to insect herbivory

Potential impact of the leaf-cutting ant Acromyrmex lobicornis on conifer plantations in northern Patagonia, Argentina

Contact Info

Product

Resources

About