Results 211 to 220 of about 42,897 (262)

Beyond neurotransmission: dopamine as an emerging biotic and abiotic stress regulator in plants. [PDF]

Stress Biol
Shinde D, Pareek S.
europepmc   +1 more source

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A chemical defence against phage infection

Nature, 2018
The arms race between bacteria and the phages that infect them drives the continual evolution of diverse anti-phage defences. Previously described anti-phage systems have highly varied defence mechanisms1-11; however, all mechanisms rely on protein components to mediate defence.
Martin Daniel-Ivad, Ian Mantel, Justin Nodwell   +2 more
exaly   +3 more sources

Fruit defence syndromes: the independent evolution of mechanical and chemical defences

Evolutionary Ecology, 2017
Plants are prone to attack by a great diversity of antagonists against which they deploy various defence mechanisms, of which the two principle ones are mechanical and chemical defences. These defences are hypothesized to be negatively correlated due to either functional redundancy or a trade-off, i.e., plants which rely on increased mechanical defence
Omer Nevo, Kim Valenta, Sarah A Styler
exaly   +2 more sources

Chemical Defences in Aquatic Plants

The Journal of Ecology, 1986
(1) Fifteen species of aquatic vascular plants were examined for the presence of alkaloids. (2) The alkaloid content ranged from 0.13 mg g-1 dry weight in Heteranthera dubia to 0.56 mg g-1 dry weight in Potamogeton crispus. These concentrations are within a range which has been found to be pharmacologically active in previous studies, and can therefore
M. L. Ostrofsky, E. R. Zettler
openaire   +1 more source

THE BODY'S CHEMICAL MECHANISMS OF DEFENCE*

Nature, 1947
THE defence of the body against the poisonous action of compounds of simple chemical constitution is effected by a variety of chemical reactions. The toxic compound may be oxidized to a non-poisonous product, or to one for which a rapid means of elimination exists.
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Chemical Defence of a Centipede (Clinopodes Flavidus)

Journal of Insect Physiology
Chemical substances are of utmost importance for the biotic interactions between animals and their predators/parasites; many of these semiochemicals are emitted for defence purposes. One of the most deterrent and toxic biogenic substances we know of is hydrogen cyanide, which can be stored by certain insects, millipedes, centipedes and arachnids in the
Mitić, Bojan, Jovanović, Vesna B., Todosijević, Marina M., Eckhard, Margret, Vasiljević, Ljubica, Tešević, Vele, Vujisić, Ljubodrag V.   +6 more
openaire   +3 more sources

Chemical Defence Strategies of Higher Fungi

Chemistry – A European Journal, 2008
AbstractLike plants, fungi have evolved a variety of defence strategies in order to protect themselves against feeding mammals, insects and infection with parasitic fungi. In contrast to plants little is known on the chemical ecology of fruiting bodies of higher fungi, particularly those defence mechanisms which are induced upon wounding have only ...
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Chemical Defence in the Termite Ancistrotermes cavithorax

1979
Abstract The defensive secretion of the soldiers of the termite Ancistrotermes cavithorax have been shown to consist largely of three new sesquiterpenes. The minor soldiers produce ancistrodial (1) exclusively, whereas the major soldiers secrete ancistrofuran (2) together with a bicyclic unsaturated dialdehyde (3).
Raymond Baker, Paul H. Briner, David A. Evans   +2 more
openaire   +1 more source

A contribution to chemical defence in World War II

Trends in Biochemical Sciences, 2000
We thank Professor Peter Newell for continuing to allow us space in the Department, and Drs G. Brown and B. Henning for helpful comments and Ms Alex Morgan for assistance with the figures.
M G, Ord, L A, Stocken
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Nuclear biological and chemical defence

The RUSI Journal, 1981
Summary NBC weapons can all be used in war. Future aggressors may see them as attractive options to be exercised. They could cause mass casualties. Good defensive measures are essential. Only with the ability to protect the service person, reduce potential casualties and give our troops the ability to continue fighting in an NBC environment, will we be
A.G. Vicary, J. Wilson
openaire   +1 more source