Insect and Host Plant; Insect Plant Relationships
نویسندگان
چکیده
منابع مشابه
DNA barcoding insect-host plant associations.
Short-sequence fragments ('DNA barcodes') used widely for plant identification and inventorying remain to be applied to complex biological problems. Host-herbivore interactions are fundamental to coevolutionary relationships of a large proportion of species on the Earth, but their study is frequently hampered by limited or unreliable host records. Here we demonstrate that DNA barcodes can great...
متن کاملPlant polyploidy and insect/plant interactions.
We used flow cytometry and extensive geographic surveys of herbivore attack to test whether repeated evolution of autotetraploidy in the perennial herb Heuchera grossulariifolia Rydb. (Saxifragaceae) has created evolutionary barriers to attack by the specialist moth herbivore Greya politella (Prodoxidae). We found that the moth has colonized tetraploid as well as diploid populations, has coloni...
متن کاملPlant Hybrid Zones and Insect Host Range Expansion
The hybrid bridge hypothesis suggests that plant hybrids ‘‘bridge’’ the genetic gap between actual and potential host species, and that, for this reason, herbivorous insects are more likely to evolve an expanded host range in the presence of hybrids. While intuitively appealing, the hypothesis has two implicit assumptions: that phenotypic gaps between potential hosts limit host range, and that ...
متن کاملInduced plant defenses, host-pathogen interactions, and forest insect outbreaks.
Cyclic outbreaks of defoliating insects devastate forests, but their causes are poorly understood. Outbreak cycles are often assumed to be driven by density-dependent mortality due to natural enemies, because pathogens and predators cause high mortality and because natural-enemy models reproduce fluctuations in defoliation data. The role of induced defenses is in contrast often dismissed, becau...
متن کاملPhytoplasmas: genetics, diagnosis and relationships with the plant and insect host.
Phytoplasmas cannot be cultivated in vitro, and remain the most poorly understood plant pathogens. Despite this limitation, the investigation of their nature with the aid of modern tools has produced noteworthy results during the last 20 years. Using biochemical and molecular approaches, the phylogeny of the phytoplasmas has been described, their chromosomal and extrachromosomal components are ...
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ژورنال
عنوان ژورنال: Bulletin of the Entomological Society of America
سال: 1974
ISSN: 0013-8754
DOI: 10.1093/besa/20.4.340