Floral scents have evolved to attract pollinators and sometimes also to deter enemies.
Posts Tagged “phenotypic plasticity”
Growing in competition with close relatives may produce modifications in competitive traits to ameliorate competition with kin. Milla et al. study multi-trait phenotypic expression in response to competition with conspecifics of varied degrees of genealogical relatedness in an annual legume, Lupinus angustifolius. In contrast to reports on other species, they find that relatedness to competing neighbours [...]
Seeds from different populations of the same species often show distinct germination responses to the smoke-derived chemical karrikinolide (KAR1), thus limiting its potential for use in weed management. Gorecki et al. study the effect of the environment during seed development (i.e. the parental envioronment) on the KAR1-response of seeds from different populations of Brassica tournefortii and [...]
Functional plasticity in a plant’s hydraulic architecture may constitute a mechanistic basis for anticipating the differential success of plant species in response to climate variability. von Arx et al. compare several lifetime functional traits in the root xylem of the long-lived perennial herb Potentilla diversifolia (Rosaceae) growing in a 14-year water supplement experiment, and find that [...]
Suaeda maritima shows morphologically different forms on high and low areas of the same salt marsh. Wetson et al. demonstrate that roots of this halophyte have a constitutively very high activity of lactate dehydrogenase (LDH) regardless of whether they are growing in aerated or severely hypoxic conditions, and not the inducible increase in activity that has [...]
Population differentiation in a variable environment is related to the selection pressures that plants experience. Ward et al. compare differences in growth- and defence-related traits in two isolated populations of Acacia raddiana trees from sites at either end of an extreme environmental gradient in the Negev desert. They find no evidence of trade-offs between physical and [...]
Studies have suggested that plant sexual reproduction is particularly vulnerable to climate change, and a number of ecologically and evolutionarily relevant genes have recently been identified. Shimizu et al. consider that studying gene functions in naturally fluctuating conditions is very important in order to predict responses to changing environments. For example, modelling has shown that FLC in [...]