Results 21 to 30 of about 5,780,781 (282)

Species with a chemical defence, but not chemical offence, live longer [PDF]

open access: yesJournal of Evolutionary Biology, 2013
AbstractEvolutionary hypotheses for ageing generally predict that delayed senescence should evolve in organisms that experience lower extrinsic mortality. Thus, one might expect species that are highly toxic or venomous (i.e. chemically protected) will have longer lifespans than related species that are not likewise protected.
Hossie, Thomas   +3 more
openaire   +2 more sources

Compound Specific Trends of Chemical Defences in Ficus Along an Elevational Gradient Reflect a Complex Selective Landscape [PDF]

open access: yes, 2022
Elevational gradients affect the production of plant secondary metabolites through changes in both biotic and abiotic conditions. Previous studies have suggested both elevational increases and decreases in host-plant chemical defences.
Novotny V   +13 more
core   +2 more sources

Do induced responses mediate the ecological interactions between the specialist herbivores and phytopathogens of an alpine plant? [PDF]

open access: yesPLoS ONE, 2011
Plants are not passive victims of the myriad attackers that rely on them for nutrition. They have a suite of physical and chemical defences, and are even able to take advantage of the enemies of their enemies.
Gregory Röder   +2 more
doaj   +1 more source

Knowing the Enemy: Inducible Defences in Freshwater Zooplankton

open access: yesDiversity, 2020
Phenotypic plasticity in defensive traits is an appropriate mechanism to cope with the variable hazard of a frequently changing predator spectrum. In the animal kingdom these so-called inducible defences cover the entire taxonomic range from protozoans ...
Patricia Diel   +3 more
doaj   +1 more source

Predator‐induced changes in the chemical defence of a vertebrate [PDF]

open access: yesJournal of Animal Ecology, 2019
Abstract1. Inducible defences are ubiquitous in the animal kingdom, but little is known about facultative changes in chemical defences in response to predators, especially so in vertebrates.2. We tested for predator‐induced changes in toxin production of larval common toads (Bufo bufo), which are known to synthesize bufadienolide compounds.3.
Hettyey, Attila   +8 more
openaire   +6 more sources

Arbuscular mycorrhizal fungi prevent the negative effect of drought and modulate the growth‐defence trade‐off in tomato plants

open access: yesJournal of Sustainable Agriculture and Environment, 2022
Introduction A wide range of arbuscular mycorrhizal fungi (AMF) can be applied to agricultural soils as biofertilizers for increasing crop growth and yield.
Dimitri Orine   +5 more
doaj   +1 more source

Chemical Defence and Toxins of Plants [PDF]

open access: yes, 2010
Higher plants protect themselves by producing a variety of secondary metabolites and proteins that are involved in defense against herbivores as well as microbial pathogens. Concerning microbial pathogenesis in plants, in many cases, it is known that phytotoxins that are produced by plant pathogens play an important role in disease development causing ...
Yamane, H.   +5 more
openaire   +3 more sources

Opisthobranch grazing results in mobilisation of spherulous cells and re-allocation of secondary metabolites in the sponge Aplysina aerophoba

open access: yesScientific Reports, 2020
Sponges thrive in marine benthic communities due to their specific and diverse chemical arsenal against predators and competitors. Yet, some animals specifically overcome these defences and use sponges as food and home.
Yu-Chen Wu   +5 more
doaj   +1 more source

Geographical and within-population variation of constitutive chemical defences in a Mediterranean oak (Quercus ilex)

open access: yesForest Systems, 2020
Aim of study: to assess whether constitutive levels of total phenols and condensed tannins acting as chemical defences in Quercus ilex vary across regions, populations and genotypes.
Manuela Rodríguez-Romero   +2 more
doaj   +1 more source

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