Resistance in Trees to Insects — an Overview of Mechanisms and Interactions

Larsson, Stig

doi:10.1007/0-306-47596-0_1

Cited by 22 publications

(17 citation statements)

References 199 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The physiological properties of pines at the far sites may have differed from those at the near sites, representing different levels of resistance against attacking subcortical insects. The resistance of trees is associated with morphological characteristics such as tree and growth parameters, vigor index and crown transparency (Waring and Pitman, 1980;Langstrom and Hellqvist, 1993;Larsson, 2002;Lieutier, 2002Wermelinger et al, 2008), as well as biochemical compounds such as resin, hydrocarbons and phenolics (Annila et al, 1999). It is not known which of these factors had greatest effect on attracting xylophagous insects to the pines sampled far from lakes.…”

Section: Discussionmentioning

confidence: 98%

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

Krams

Daukšte

Kivleniece

et al. 2012

Forest Ecology and Management

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 98%

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

Krams

Daukšte

Kivleniece

et al. 2012

Forest Ecology and Management

View full text Add to dashboard Cite

“…Other factors that could influence adult oviposition decision are the quality and abundance of the host, inter‐ and intraspecific competition, natural enemies (Sugiura et al ., ), physical traits, phenology and combinations of these factors (Larson, ). Although adult oviposition choice can be influenced by parasitoids and predators (Videla et al ., ), it is unlikely to be the case for C. ohridella because natural enemies cause very little mortality of this species and the miner lacks specialist parasitoids and predators (Grabenweger, ; Grabenweger et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Oviposition patterns and larval damage by the invasive horse‐chestnut leaf miner Cameraria ohridella on different species of Aesculus

D’Costa

Koricheva

Straw

et al. 2013

Ecological Entomology

View full text Add to dashboard Cite

Preference–performance relationships are thought to be particularly important for sessile herbivores, such as leaf miners, whose choice of host plant is entirely determined by the ovipositing female. However, this relationship has seldom been examined between a non‐native herbivore and non‐native host plants. Leaf damage and oviposition patterns by the invasive horse‐chestnut leaf miner, Cameraria ohridella Deschka & Dimic, 1986 (Lepidoptera: Gracillariidae), were investigated on 11 different species of Aesculus L. (Sapindaceae) at the Royal Botanic Gardens, Kew. The tree species studied were of different continental origin and belonged to four different sections of the genus Aesculus. Oviposition was recorded on all the investigated species of Aesculus, with egg densities being greatest on Aesculus hippocastanum L. and Aesculus turbinata Blume. By contrast, mines were formed on only six out of the 11 studied species. There was a positive correlation between eggs laid on leaves of a species and levels of leaf tissue damage by C. ohridella, although eggs were laid on species on which larvae did not develop. Host suitability for C. ohridella was related to the phylogeny of the genus Aesculus. Species belonging to the section Aesculus were susceptible to the leaf miner; species in the section Pavia showed variable susceptibility; and species in the section Calothyrsus and Macrothyrsus were found to be resistant.

show abstract

“…The consumption of food where quality has changed as a consequence of either previous or current plant defoliation by herbivores is associated with a change in insect fitness (Larsson, 2002;Haukioja, 2005;Howe and Schaller, 2008). The change in insect fitness is important in assessing food chain dynamics (predators, parasitoids, pathogens).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Defoliation-Induced Delayed Changes in Silver Birch Foliar Chemistry on Gypsy Moth Fitness, Immune Response, and Resistance to Baculovirus Infection

et al. 2012

View full text Add to dashboard Cite

We tested the effects of defoliation-induced changes in silver birch, Betula pendula, foliar chemistry (delayed induced resistance, DIR) on the fitness and immune defense of the gypsy moth, Lymantria dispar. We measured larval developmental time, pupal weight, rate of survival to the adult stage, and five characteristics of larval immune defense: (1) encapsulation response; (2) phenoloxidase activity; (3) hemocyte concentration and (4) lysozyme-like activity in the hemolymph; and (5) resistance to infection by L. dispar nucleopolyhedrovirus (LdMNPV). The latter is an entomopathogenic baculovirus that often causes epizootics during outbreaks of L. dispar. We also measured the involvement of foliage non-tannin phenolic compounds in resistance of B. pendula to herbivory as well as the relationship between the compounds we identified and L. dispar development, growth, and survival. Leaves of B. pendula with previous defoliation history contained increased levels of myricetin glycoside, two flavonoid aglycones (acacetin and tetrahydroxy-flavone dimethyl ether), as well as one unidentified simple phenolic. The concentrations of two glycosides of quercetin, as well as the content of one unidentified flavonoid glycoside were significantly decreased under defoliation treatment. DIR of B. pendula retarded larval growth rate and increased lysozyme-like activity in the hemolymph, but did not affect encapsulation response, phenoloxidase activity, or hemocyte count. We did not find any DIRmediated tritrophic interactions among birch, gypsy moth, and LdMNPV. After viral inoculation, the mean hemocyte counts in larvae reared on an individual tree correlated significantly with the survival of larvae reared on that same tree, indicating that hemocyte density in hemolymph might be associated with resistance to viral infection. We found a strong positive correlation between the concentration of 1-(4″-hydroxyphenyl)-3′-oxopropyl-β-D-glucopyranose and L. dispar survival rate, which may indicate an unlikely role of this dominant nontannin phenolic in B. pendula defense against L. dispar. Our study also shows that several immune characteristics of insects that function as barriers against different groups of parasites are differently affected by plant induced defenses. This underscores the importance of considering multiple factors when characterizing barriers to insect immunity.

show abstract

Resistance in Trees to Insects — an Overview of Mechanisms and Interactions

Cited by 22 publications

References 199 publications

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

Drought-induced positive feedback in xylophagous insects: Easier invasion of Scots pine leading to greater investment in immunity of emerging individuals

Oviposition patterns and larval damage by the invasive horse‐chestnut leaf miner Cameraria ohridella on different species of Aesculus

The Effects of Defoliation-Induced Delayed Changes in Silver Birch Foliar Chemistry on Gypsy Moth Fitness, Immune Response, and Resistance to Baculovirus Infection

Contact Info

Product

Resources

About