Results 231 to 240 of about 14,066 (262)

Background Insect Herbivory: Impacts, Patterns and Methodology

2017
Plants provide humans with oxygen, food, fibre and fuel, but their effectiveness in performing these roles is affected by herbivores. Historically, studies on insect herbivory have primarily addressed pest outbreaks, which have indisputable ecological and economic consequences.
Zvereva Elena, Kozlov Mikhail
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Intercropping Alters Phytochemicals Associated With Insect Herbivory

Journal of Chemical Ecology
Given the multiple possible mechanisms for interspecific chemical interaction between adjacent heterospecific plants, phytochemical profiles, which include phytochemical defense compounds, of crop species could potentially be enhanced or altered by intercropping with phytochemically diverse neighbors.
Jarrod Q. Fyie, Chase A. Stratton, William R. Morrison, Ebony G. Murrell   +3 more
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Plant Resistance to Insect Herbivory

2011
Plants are the major food source for most insects. While insects have developed various feeding strategies, plants respond by activating distinct signaling pathways resulting in the production of defensive compounds. Important regulators in this signaling system are compounds in the insect saliva, which are often modified plant molecules.
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Deciduous leaf drop reduces insect herbivory

Oecologia, 2007
Deciduous leaf fall is thought to be an adaptation that allows plants living in seasonal environments to reduce water loss and damage during unfavorable periods while increasing photosynthetic rates during favorable periods. Observations of natural variation in leaf shedding suggest that deciduous leaf fall may also allow plants to reduce herbivory.
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Induced defense mechanisms in an aquatic angiosperm to insect herbivory

Oecologia, 2014
In terrestrial angiosperms, defense and resistance mechanisms against herbivores have been studied extensively; yet this topic is poorly understood in aquatic angiosperms. We investigated induced response mechanisms in Myriophyllum spicatum to the generalist insect herbivore Acentria ephemerella in three independent experiments.
Fornoff, Felix, Gross, Elisabeth M.
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Plant Defenses Against Insect Herbivory

2010
Herbivory, the act of consumption of plant biomass by specialist animals, regulates the cycling of biotic and abiotic ecosystem components, through a complex process transferring materials among various trophic levels. Herbivores include insects and mammals of varying sizes, the former being most important due to their high diversity.
null Farha-Rehman, Fareed A. Khan, Shoeba B. Anis, S. M. A. Badruddin   +3 more
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Effects of insect herbivory on plant architecture

1994
In plants of Mediterranean-type ecosystems, the diversity and distribution of construction units or modules of species may lead to an enhanced understanding of specific types of metameric architecture and thus of canopy construction. An analysis of 160 species of plants from ecosystems of central Chile, France, Israel and South Africa resulted in the ...
Rosanna Ginocchio, Gloria Montenegro
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Diversity and abundance of phyllosphere bacteria are linked to insect herbivory

Molecular Ecology, 2014
AbstractSimultaneous or sequential attack by herbivores and microbes is common in plants. Many seed plants exhibit a defence trade‐off against chewing herbivorous insects and leaf‐colonizing (‘phyllosphere’) bacteria, which arises from cross‐talk between the phytohormones jasmonic acid (JA, induced by many herbivores) and salicylic acid (SA, induced by
Parris T, Humphrey, Trang T, Nguyen, Martha M, Villalobos, Noah K, Whiteman   +3 more
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Reassessment of the role of gut alkalinity and detergency in insect herbivory

Journal of Chemical Ecology, 1991
Previously it was reported that significant amounts of the tomato phenolic, chlorogenic acid, were oxidized in the digestive system of generalist feedersSpodoplera exigua andHelicoverpa zea. The covalent binding of the oxidized phenolic (i.e., quinone) to dietary protein exerts a strong antinutritive effect against larvae.
G W, Felton, S S, Duffey
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Insect herbivory and non-woody plants

1982
Herbaceous plants are usually relatively short-lived and lack the resistant structural materials found in the woody plants. Thus, the whole plant is potentially susceptible to insect herbivory. Much of the literature dealing with the effects of insects on such plants relates to agricultural crops and there is little detailed information on noneconomic ...
I. D. Hodkinson, M. K. Hughes
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