annals-of-botany
Light and competition fail to explain seedling coexistence
The coexistence of forest tree species has often been linked to differences in their response to light availability during the regeneration stage. Van Couwenberghe et al.
annals-of-botany
Gibberellin mediates tension wood formation
Results suggest that gibberellin is important for the development of gelatinous fibres, and therefore in gravitropism.
annals-of-botany
Nectary evolution in Disa orchids
Independent nectary evolution of orchid genus Disa has involved both repeated recapitulation of secretory epidermis, and innovation of stomatal nectaries.
annals-of-botany
Timetable for allopolyploidy in flowering plants (Viewpoint)
This is the first study to propose a general temporal framework for strict allopolyploidy.
annals-of-botany
A stable phylogeny for the cycads
The cycads (order Cycadales) are an ancient order of gymnosperms comprising ten genera and 331 species found in all tropical regions of the earth. Using sequences
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Central–marginal diversity in a Mediterranean endemic
A study of Arenaria provincialis’s (Caryophyllaceae) geographic range finds that despite its narrow distribution it has a high level of molecular variation.
annals-of-botany
APETALA3- and PISTILLATA-like genes in a basal angiosperm
Liu et al. study class B gene homologs in Hedyosmum orientale and find that the development of the perianth does not rely on B homeotic function.
annals-of-botany
Chamaecrista flexuosa: a possible case of atypical enantiostyly
An investigation of reproductive biology and the presence of deviations from the enantistylous standard form in Chamaecrista flexuosa (Fabaceae).
annals-of-botany
Nutrient reserves in geophytes may allow genome size increase
A study of 47 pairs of geophytic taxa and their closest non-geophytic relatives across the whole angiosperms.
annals-of-botany
Auxin and H2O2 interaction in control of root growth
One of the best-known effects of the plant hormone auxin on plant development is the inhibition of root elongation, yet the underlying mechanism remains poorly
annals-of-botany
Duration of shoot elongation in Scots pine
A study of lateral shoot growth in Scots pine over 7 years finds that daily maximum growth rate correlates positively with growth duration.
annals-of-botany
Nutrient requirements differ in two sympatric hemiparasitic species
The reasons for marked differences in growth performance of hemiparasites when attached to different hosts are not fully understood. Li et al. study the responses to