annals-of-botany
Novel structure of placenta in a lycophyte
An examination of an embryo in an underground gametophyte reveals a massive foot with ultrastructural variability comparable to that across major clades.
annals-of-botany
AM fungi and P acquisition by hemiparasitic Pedicularis
A study of Pedicularis rex and P. tricolor finds that AM colonization is low, and less than 1 % of total plant P is taken up from the soil via the AM fungus.
annals-of-botany
Morphogenesis and contact sites in lobed mesophyll cells
A study of morphogenesis of lobed MCs of Zea mays finds that it is characterized by early, patterned differentiation of two distinct cell wall subdomains.
annals-of-botany
Phylogenomics and taxonomy of an isolated panicoid lineage
Lecomtella madagascariensis belongs to a lineage sister to three panicoid tribes of major economical importance distributed worldwide.
annals-of-botany
Tapetum and middle layer control of male fertility in kiwifruit
Kiwifruit (Actinidia deliciosa) male-sterile anthers abort at the microspore-stage, but the role sporophytic tissues in controlling male-sterility is unknown. Falasca et al. show
annals-of-botany
Hybridization and long-distance colonization at different time scales
Africa was apparently colonized by grasses twice from two different sources, Europe and East Asia.
annals-of-botany
The tannosome: a new chloroplast-derived organelle
Condensed tannins (proanthocyanidins) are widely distributed amongst the vascular plants (Tracheophyta). Brillouet et al. use a variety of techniques to examine tannin-rich samples from various
annals-of-botany
Reproductive differentiation into sexual and apomictic cytotypes
Mechanisms enabling the maintenance of sexual and apomictic modes of seed formation in sympatry are poorly understood. Dobeš et al. study populations of Potentilla puberula representing
annals-of-botany
Avoidance of ozone-induced stress via stomatal closure
Stomatal closure can be caused by an increase in internal CO2 concentration resulting from ozone-induced inhibition of carbon assimilation by chloroplasts; however, if stomata can
annals-of-botany
Phylogenetics, biogeography and trait evolution in tribe Arabideae
Karl and Koch provide a comprehensive phylogenetic analysis for the Arabideae species assemblage and test for association of trait and characters.
annals-of-botany
Basal root whorl number and P acquisition
BRWN is associated with increased phosphorus acquisition and this may have value for selection of genotypes with better performance in low-phosphorus soils.
annals-of-botany
Selenium toxicity in plants (Botanical Briefing)
Van Hoewyk provides a framework on plant selenium toxicity, showing that both malformed selenoproteins and oxidative stress drive selenium-induced stress.