One of the most remarkable reproductive structures of the members of the plant family Asteraceae is the style. Katinas et al. examine the morphology and distribution of lipophilic compounds of the styles in the early...
Tag - Asteraceae
botanyone
Global warming may reduce plant nectar yield
Although flower nectar yield is well known to be temperature dependent, the effects of climate change on the availability of nectar to pollinators have rarely been studied. Asymmetric warming is one of the...
Leaf dynamics in growth and reproduction of Xanthium
Leaf longevity is controlled by the light gradient in the canopy and also by the nitrogen (N) sink strength in the plant. Stand density may influence leaf dynamics through its effects on light gradient and on plant...
Composites bounce back into favour…
Could members of the daisy family, dandelions and lettuces, hold the key to future rubber self-sufficiency?
Nigel Chaffey
Endogenous hormones and fructan metabolism in Chrysolaena
Results suggest that the co-ordinated action of carbohydrate metabolism and hormone synthesis enables C. obovata to survive unfavourable field conditions.
Trichomes related to an unusual method of water retention and protection of the stem apex in an arid zone perennial species
The adaptation strategies of plants to harsh environments are among the most interesting subjects in plant biology. Several studies have investigated the role played by trichomes in protecting plant organs in these...
AoBPLANTS
Population persistence of a displaced shrub
Olearia flocktoniae (Asteraceae) is an endangered shrub that was passively translocated from its natural ecosystem where it has since gone extinct. Gross and Mackay use two decades of demographic monitoring and a seed...
Sesquiterpene lactones and herbivore resistance
Ahern and Whitney use common garden experiments with common cocklebur, Xanthium strumarium (Asteraceae), to examine relationships between stereochemical variation in sesquiterpene lactones, herbivore damage and plant...
Mating system and adaptive potential for leaf morphology
Self-pollination is often regarded as an evolutionary dead end, yet many selfers seem capable of retaining high adaptive potential. Andersson and Ofori perform experimental crosses within an initially self-sterile...
Polyploidy in Leucanthemum in the Iberian Peninsula
Using molecular and systematic techniques to infer the evolutionary history of the L. pluriflorum clan in the north-west of the Iberian Peninsula.
Competition/colonization syndrome mediated by germination timing
The competition–colonization trade-off in plants is considered to result from variation in resource partitioning. Using different populations of the heterocarpic species Crepis sancta (Asteraceae), Dubois and...
Molecular phylogenetics of Eurasian Aster
The classification and phylogeny of Eurasian (EA) Aster remain poorly resolved. Li et al. use nrDNA ITS, and ETS and cpDNA trnL-F sequences to delimit EA Aster sensu stricto and to elucidate phylogenetic relationships...
Cerrado ecosystems and the Meskal Daisy on the cover
The third in a series of videoblogs from AoBBlog.com about the background pictures used on Annals of Botany covers. The Youtube link is here, and it is best watched in HD/1080p resolution. An outline of the text is...
Editor Pat Heslop-Harrison
Pollen–pistil interactions in the Asteraceae (Review)
Pollen–pistil interactions are an essential prelude to fertilization in angiosperms, and self-incompatibility (SI) is the best understood of these at a molecular level. Allen et al. review studies in the Asteraceae, and...
