annals-of-botany
Defoliation, tree growth and storage of C and N
Although lenga beech trees, completely defoliated by caterpillars of Ormiscodes amphimone, do not die, they show reduced growth for at least 2 years.
annals-of-botany
Chilling tolerance of C4 photosynthesis in Miscanthus
A study finds relatives of Miscanthus ×giganteus with significantly superior capacity for photosynthesis at chilling temperatures for the first time.
annals-of-botany
How tree species fill geographic and ecological space
Ricklefs analyses local assemblages of deciduous trees and finds that the forests in question do not appear to be saturated with species.
annals-of-botany
Phylogeny and evolution of Cyperus esculentus
Results suggest that tiger nut probably originated in the late Cenozoic in Africa and reached the Americas repeatedly, independently of Columbian exchanges.
annals-of-botany
Pollinators and maintaining variation in flower colour
This study uses dual choice assays and experimental arrays of blue and white flowers to determine pollinators’ preference for flower colour in Aquilegia.
annals-of-botany
Stomata and atmospheric CO2 in bryophytes
This study strengthens the hypothesis of incremental rather than early acquisition of stomatal regulatory processes through land plant evolution.
annals-of-botany
Zygomorphy evolved from disymmetry in Fumarioideae
Floral bilateral symmetry (zygomorphy) has evolved at least 70 times during the history of angiosperms, whilst radial symmetry (actinomorphy) is the ancestral and most common state
annals-of-botany
Fast-growing trees rely on reserves for new spring growth
Uscola et al. use isotope labeling to study carbon and nitrogen movements in new spring growth in seedlings of 4 coexisting Mediterranean evergreen trees.
annals-of-botany
Mechanisms for ethylene-induced aerenchyma formation
Results suggest that ethylene is perceived in all maize root tissues and cortical-cell-specific PCD is controlled downstream of ethylene perception.
annals-of-botany
Programmed cell death in cryo-exposed embryonic axes
A study of silver maple cools embryonic axes to liquid nitrogen temperatures without prior dehydration or cryoprotection treatments and thaws them rapidly.
annals-of-botany
Sediment seed banks in freshwater sandstone rock pools
Results suggest that sediment seed banks may represent a significant driver of species persistence in these ecosystems.
annals-of-botany
Phyllotaxis in arabidopsis cuc2 cuc3 double mutants
In the cuc2 cuc3 double mutant of Arabidopsis thaliana the regular spiral Fibonacci phyllotaxis is disrupted and flower pedicels are fused to the inflorescence stem in