Phenological and chemical differences among hybrid poplar clones (Salicaceae) varying in resistance to Cryptorhynchus lapathi (L.) (Coleoptera: Curculionidae)

Broberg, Cynthia L.; Inkster, James; Borden, John H.

doi:10.1016/j.bse.2009.12.036

Cited by 5 publications

(10 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To some extent, the TM ϫ TM volatiles proÞle may explain rejection by C. leucomelas, particularly in the two-choice leaves preference experiment. This result is in agreement, although in a different plant-feeding guild, with a previous study showing that hybrid poplars with P. maximowiczii parentage have a novel mechanism of resistance to the poplar and willow borer Cryptorhynchus lapathi (L.) (Coleoptera: Curculionidae) (Broberg et al 2010).…”

Section: Discussionsupporting

confidence: 92%

“…These results conÞrm previous studies reporting that poplar hybrids with P. maximowiczii parentage are more resistant to aphids by reducing probing behavior and fecundity (Alfaro-Tapia et al 2007, Ramṍrez et al 2004), A higher antixenotic and antibiosis resistance of poplar hybrids with P. maximowiczii parentage (NM6) to the poplar-and-willow borer, C. lapathi (L.), has also been reported , although, chemically mediated resistance was not supported (Broberg et al 2010). Nonetheless, poplar hybrids with P. maximowiczii parentage are serious candidates for breeding programs aimed at enhancing insect resistance.…”

Section: Discussionsupporting

confidence: 92%

See 1 more Smart Citation

Host Selection and Probing Behavior of the Poplar Aphid <I>Chaitophorus leucomelas</I> (Sternorrhyncha: Aphididae) on Two Poplar Hybrids With Contrasting Susceptibility to Aphids

et al. 2014

View full text Add to dashboard Cite

Poplars are frequently attacked by aphids. The differential susceptibility of poplar hybrids to the aphid Chaitophorus leucomelas Koch (Sternorrhyncha: Aphididae) has been described, but the mechanism underlying this pattern is unknown. This work tested the hypothesis that poplar resistance to this aphid is associated with the presence of volatiles and secondary plant compounds that affect host selection and feeding behavior. This hypothesis was tested by studying the host choice and feeding behavior of C. leucomelas on two poplar hybrids with contrasting susceptibilities to this aphid ([Populus trichocarpa Torrey & Gray x Populus deltoides Bartram ex Marshall] x P. deltoides [TD x D], and [P. trichocarpa x Populus maximowiczii Henry] x [P. trichocarpa x P. maximowiczii] [TM x TM]). The results showed that C. leucomelas rejected leaves of the TM x TM hybrid and did not prefer odors from either hybrid. Electronic monitoring of the probing behavior of C. leucomelas suggested the involvement of antifeedant factors in the TM x TM hybrid. In addition, the chemical characterization of volatiles, epicuticular waxes, and internal phenols of leaves from both poplar hybrids revealed that TM x TM had a higher abundance of monoterpenes, sesquiterpenes, n-alkanes, and phenols. These results are discussed in terms of their contribution to poplar breeding programs aimed at enhancing insect resistance.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 92%

Host Selection and Probing Behavior of the Poplar Aphid <I>Chaitophorus leucomelas</I> (Sternorrhyncha: Aphididae) on Two Poplar Hybrids With Contrasting Susceptibility to Aphids

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Broberg et al. () found that sap flow did not cause early instar larval drowning or egg pitching in well‐watered Populus hybrid clones attacked by C. lapathi , and the most susceptible clones had the highest bark water content during oviposition. Although resistant poplar hybrid clones displayed larval antibiosis to early C. lapathi instars (Broberg et al.…”

Section: Discussionmentioning

confidence: 99%

“…), a detailed investigation of known susceptible and resistant clones found no clearly defined differences in primary or secondary metabolites, suggesting that resistance likely involves a non‐salicylate mechanism (Broberg et al. ). There is one reported case of hypersensitivity in Salix (Höglund et al.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Disentangling herbivore impacts in primary succession by refocusing the plant stress and vigor hypotheses on phenology

Che‐Castaldo

Crisafulli

Bishop

et al. 2019

Ecological Monographs

View full text Add to dashboard Cite

The plant stress and plant vigor hypotheses are widely used to explain the distribution and abundance of insect herbivores across their host plants. These hypotheses are the subject of contentious debate within the plant herbivore research community, with several studies finding simultaneous support for both hypotheses for the same plant–herbivore interaction. We address the question of how such support is possible using dynamic site‐occupancy models to quantify the attack dynamics of Cryptorhynchus lapathi (poplar‐willow weevil) on Salix sitchensis (Sitka willow), a dioecious shrub colonizing Mount St. Helens, Washington, USA after the 1980 eruption, in relation to host plant stress, vigor, and sex. We also introduce several scaling criteria as a rigorous test of the plant vigor hypothesis and demonstrate why modeling insect detection is important in plant–insect studies. Weevils responded positively to water stress associated with seasonal dry‐downs, and this response was phenologically compartmentalized by larval feeding mode. Weevils preferentially attacked large and/or flowering stems, imposing an ecological cost on willow reproduction via increased stem mortality and susceptibility to future attack. We propose that the dual response to host plant stress and vigor is due to the synchronization between young weevil larval feeding and willow nutrient pulses that are mediated by environmental stress. In turn, this process drives successional dynamics, causing the juvenilization of upland willow plants and possibly delaying establishment of a willow‐dominated upland sere. These results highlight the common, but often overlooked, phenological basis of the plant stress and plant vigor hypotheses, which both focus on how stress changes the quality of plant resources available to immature insects.

show abstract

Effectiveness of entomopathogenic fungal strains against poplar/willow weevil (Cryptorhynchus lapathi L.) larvae

et al. 2022

View full text Add to dashboard Cite

Phenological and chemical differences among hybrid poplar clones (Salicaceae) varying in resistance to Cryptorhynchus lapathi (L.) (Coleoptera: Curculionidae)

Cited by 5 publications

References 80 publications

Host Selection and Probing Behavior of the Poplar Aphid <I>Chaitophorus leucomelas</I> (Sternorrhyncha: Aphididae) on Two Poplar Hybrids With Contrasting Susceptibility to Aphids

Host Selection and Probing Behavior of the Poplar Aphid <I>Chaitophorus leucomelas</I> (Sternorrhyncha: Aphididae) on Two Poplar Hybrids With Contrasting Susceptibility to Aphids

Disentangling herbivore impacts in primary succession by refocusing the plant stress and vigor hypotheses on phenology

Effectiveness of entomopathogenic fungal strains against poplar/willow weevil (Cryptorhynchus lapathi L.) larvae

Contact Info

Product

Resources

About