منابع مشابه
Antimicrobial peptides in animals and their role in host defences.
Domesticated animals have a large variety of antimicrobial peptides that serve as natural innate barriers limiting microbial infection or, in some instances, act as an integral component in response to inflammation or microbial infection. These peptides differ in size, composition, mechanisms of activity and range of antimicrobial specificities. They are expressed in many tissues, polymorphonuc...
متن کاملInvasive predatory crayfish do not trigger inducible defences in tadpoles.
Invasive species cause deep impacts on ecosystems worldwide, contributing to the decline and extinction of indigenous species. Effective defences against native biological threats in indigenous species, whether structural or inducible, often seem inoperative against invasive species. Here, we show that tadpoles of the Iberian green frog detect chemical cues from indigenous predators (dragonfly ...
متن کاملEpichloë Endophytes Alter Inducible Indirect Defences in Host Grasses
Epichloë endophytes are common symbionts living asymptomatically in pooid grasses and may provide chemical defences against herbivorous insects. While the mechanisms underlying these fungal defences have been well studied, it remains unknown whether endophyte presence affects the host's own defences. We addressed this issue by examining variation in the impact of Epichloë on constitutive and he...
متن کاملTrade-offs between constitutive and induced defences drive geographical and climatic clines in pine chemical defences.
There is increasing evidence that geographic and climatic clines drive the patterns of plant defence allocation and defensive strategies. We quantified early growth rate and both constitutive and inducible chemical defences of 18 Pinaceae species in a common greenhouse environment and assessed their defensive allocation with respect to each species' range across climatic gradients spanning 31° ...
متن کاملChanges in Growth and Chemical Defences upon Defoliation in Maize
ÐThe eect of defoliation on growth and on levels and allocation patterns of hydroxamic acids (Hx) in maize seedlings was evaluated 6 days after treatment. No signi®cant dierences were found between defoliated and nondefoliated plants for the Hx concentration, relative Hx content and Hx-aglucone to Hxglucoside ratio in shoots, roots and root exudates, with the exception of Hx concentration in ...
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ژورنال
عنوان ژورنال: Oikos
سال: 2014
ISSN: 0030-1299
DOI: 10.1111/oik.01338