10 results match your criteria herbivores clip

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Bioassays to Evaluate the Resistance of Whole Plants to the Herbivorous Insect Thrips.

Methods Mol Biol 2020 ;2085:93-108

Plant-Microbe Interactions, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands.

Thrips are tiny, cell-content-feeding insects that are a major pest on crops and ornamentals. Besides causing direct feeding damage, thrips may also cause indirect damage by vectoring tospoviruses. Novel resistance mechanisms to thrips need to be discovered and validated. Read More

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December 2020

Effect of Simulated Anthonomus signatus (Coleoptera: Curculionidae) Injury on Strawberries (Fragaria × ananassa) Grown in Southeastern Plasticulture Production.

J Econ Entomol 2017 02;110(1):208-212

Department of Entomology, North Carolina State University, Raleigh, NC, USA.

Female strawberry bud weevils (Anthonomus signatus Say) oviposit in developing flower buds of strawberries (Fragaria spp.), caneberries (Rubus spp.), and red bud (Cercis canadensis). Read More

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February 2017

AtWRKY22 promotes susceptibility to aphids and modulates salicylic acid and jasmonic acid signalling.

J Exp Bot 2016 05 23;67(11):3383-96. Epub 2016 Apr 23.

Plant Research International, Business Unit Bioscience, Wageningen University and Research Centre, PO Box 16, 6700 AA Wageningen, The Netherlands.

Aphids induce many transcriptional perturbations in their host plants, but the signalling cascades responsible and the effects on plant resistance are largely unknown. Through a genome-wide association (GWA) mapping study in Arabidopsis thaliana, we identified WRKY22 as a candidate gene associated with feeding behaviour of the green peach aphid, Myzus persicae The transcription factor WRKY22 is known to be involved in pathogen-triggered immunity, and WRKY22 gene expression has been shown to be induced by aphids. Assessment of aphid population development and feeding behaviour on knockout mutants and overexpression lines showed that WRKY22 increases susceptibility to M. Read More

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Conditional facilitation of an aphid vector, Acyrthosiphon pisum, by the plant pathogen, pea enation mosaic virus.

J Insect Sci 2010 ;10:155

Division of Biology, Imperial College London, UK.

Plant pathogens can induce symptoms that affect the performance of insect herbivores utilizing the same host plant. Previous studies examining the effects of infection of tic bean, Vicia faba L. (Fabales: Fabaceae), by pea enation mosaic virus (PEMV), an important disease of legume crops, indicated there were no changes in the growth and reproductive rate of its primary vector the pea aphid, Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae). Read More

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February 2011

Response of two prairie forbs to repeated vole herbivory.

Oecologia 2011 Apr 4;165(4):1007-15. Epub 2010 Nov 4.

Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA.

Vertebrate herbivores as diverse as ungulates, geese, and rabbits preferentially feed on plants that have previously experienced herbivory. Here, we ask whether smaller grassland "cryptic consumers" such as voles (Microtus ochrogaster and M. pennsylvanicus) preferentially clip (cut stems for access to leaves or seeds) or avoid previously clipped individuals of two tallgrass prairie species (Desmanthus illinoensis and Echinacea purpurea) within a growing season. Read More

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Soybean cyst nematode effects on soybean aphid preference and performance in the laboratory.

Environ Entomol 2010 Oct;39(5):1561-9

Department of Entomology, University of Wisconsin/Madison, 237 Russell Labs, 1630 Linden Drive, Madison, WI 53706, USA.

Herbivores on plants frequently interact via shared resources. Studies that have examined performance of herbivores in the presence of other herbivores, however, have often focused on above-ground feeding guilds and relatively less research has examined interactions between below- and above-ground consumers. We examine how soybean aphid, Aphis glycines (Matsumura) an above-ground phloem-feeding herbivore, interacts with a below-ground plant parasite, soybean cyst nematode, Heterodera glycines (Ichinohe) through their shared host plant, soybean (Glycine max L). Read More

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October 2010

Soil potassium deficiency affects soybean phloem nitrogen and soybean aphid populations.

Environ Entomol 2007 Feb;36(1):26-33

Department of Entomology, Michigan State University, 243 Natural Science, East Lansing, MI 48824, USA.

The soybean aphid is an invasive pest in the midwest United States, with frequent population outbreaks. Previous work has shown that aphid population densities are higher on potassium-deficient soybean than on healthy soybean. The experiments reported here test the hypotheses that the potassium nutrition of the host plant affects the forms of phloem nitrogen available to soybean aphids, and subsequently, their abundance. Read More

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February 2007

An analysis of plant-aphid interactions by different microarray hybridization strategies.

Mol Ecol 2004 Oct;13(10):3187-95

Max Planck Institute for Chemical Ecology, Hans-Knöll-Strasse 8, Beutenberg Campus, D-07745 Jena, Germany.

Aphids have long been considered 'stealthy' herbivores that subvert a plant's induced defenses and manipulate its source-sink signaling, but these hypotheses are largely untested at a transcriptional level. We analysed gene expression in native tobacco plants (Nicotiana attenuata) infested with Myzus nicotianae aphids, without resorting to the use of clip-cages, with a cDNA microarray containing 240 defense-related N. attenuata genes. Read More

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October 2004

Food competition between a large ruminant and a small hindgut fermentor: the case of the roe deer and mountain hare.

Oecologia 2001 Aug 1;128(4):499-508. Epub 2001 Aug 1.

Norwegian Institute for Nature Research, Tungasletta 2, 7005, Trondheim, Norway.

In this study, we demonstrate that the mountain hare and roe deer compete with each other. This was determined using "natural experiments" of populations found in sympatry and allopatry on the islands along the west coast of Norway. We demonstrate that both species occupy the same habitats, share the same food resources and that food availability is limited. Read More

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Regrowth following ungulate herbivory in Ipomopsis aggregata: geographic evidence for overcompensation.

Ken N Paige

Oecologia 1999 Mar;118(3):316-323

Department of Ecology, Ethology and Evolution, University of Illinois, 505 S. Goodwin Avenue, 515 Morrill Hall, Urbana, IL 61801, USA e-mail: Fax: +1-217-2444565, , , , , , US.

Studies were conducted on eight populations of scarlet gilia, Ipomopsis aggregata, across Colorado and in northern Arizona, to assess the fitness consequences of natural and simulated herbivory. To date, geographic studies have failed to incorporate treatment groups that included naturally browsed plants along with clipping treatments. The results presented here clearly demonstrate the importance of assessing, a priori, whether or not clipping experiments accurately reflect natural patterns of herbivory. Read More

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