annals-of-botany
In the pantropical eudicot genus Begonia (Begoniaceae), non-contiguous clusters of helicocytic stomata develop from an inwardly spiralling series of amplifying divisions and secondary meristemoids that
annals-of-botany
Polarisation and asymmetrical division generating the Poaceous subsidiary cells constitutes a very attractive model for the study of local intercellular stimulation. Auxin operates as an inductive
annals-of-botany
The production of a new lateral root from parental root primary tissues has been investigated extensively, and the most important regulatory mechanisms are now well known.
annals-of-botany
As they push their way through the soil, roots are continuously exposed to mechanical pressure. This often results in their morphological modification. Most obvious are changes
annals-of-botany
The DER1 (deformed root hairs1) locus encodes a major vegetative actin (ACTIN2) in Arabidopsis thaliana. Mutations in DER1 lead to impaired root hair development. However, the
annals-of-botany
In most plant species, initiation of lateral roots occurs above the elongation zone. However, in Cucurbitaceae it takes place in the parental root meristem. Ilina et
annals-of-botany
Mountain forests are important ecosystems subject to extreme climate conditions. Soil buffers root systems against variations in the weather, but we know little of how climate
annals-of-botany
Methanol is a frequently used solvent, and a volatile organic compound (VOC) released from plant cell walls through the action of pectin methylesterases. Tran et al.
annals-of-botany
In mature grass leaf blades as seen in cross-section, oblong cell-like structures have been interpreted most recently as intercellular gas spaces delimited by successive
annals-of-botany
In plant studies it is essential to determine cell cycle duration (T). Zhukovskaya et al. have previously proposed an exponential model evaluating T in the root
annals-of-botany
Palaeozoic Protosphagnales constitute the largest group of extinct mosses of a still uncertain affinity. Their leaf areolation resembles that of modern Sphagna, which is strikingly different
annals-of-botany
Nectar spurs are tubular outgrowths of a floral organ that contain or give the appearance of containing nectar. They are hypothesized to be a ‘key innovation’