Subterms
Foliar concentrations of plant secondary metabolites (PSMs) are influenced by soil water availability. However, concentrations of individual compounds in previously published studies have been reported to be higher, lower or to remain stable during water deficit. McKiernan et al. use multiple levels of continuous water deficit to test the effect on plant stress levels, growth […] More
Using an immunochemical approach to reveal the link between changes in abscisic acid (ABA) levels, aquaporin function and changes in root cell hydraulic conductivity (LpCell), Sharipova et al. compared the abundance of AQPs and ABA by means of immunolocalization in the tissue of barley (Hordeum vulgare) roots, and related it to LpCell. Shortly after (< […] More
Plants manage water stress through various mechanisms, including increasing concentrations of compounds such as abscisic acid (ABA) to signal stomatal closure and reduce water loss, changing plant secondary metabolite concentrations, and altering morphological traits such as growth and leaf mass per area. During a drought period, plant growth often slows down earlier than carbon uptake […] More
Abscisic acid concentration and distribution during seed development of Cypripedium formosanum serves as the key inhibitor of germination. More
Mob1 proteins are kinase regulators that are conserved among eukaryotes and which play a significant role in restraining tumor development. Pinosa et al. study the role of Mob1-like genes in development of Arabidopsis thaliana and find that the function of the gene appears to be indispensable for the growth of vegetative organs as well as […] More
Activating the gene ipt to produce high levels of cytokinins in tobacco is sufficient to trigger fast cell death without intervening chlorosis. More
Although >80% of species form arbuscular mycorrhizal symbioses, the roles of plant hormones in the associations are still being determined. Foo et al. critically review recent progress in our understanding of the roles of strigolactones, auxin, abscisic acid, ethylene, jasmonic acid and salicylic acid in mycorrhizal symbiosis, and present new evidence for a novel role for […] More
Germination timing, a major determinant of fitness, is extremely sensitive to environmental conditions but the physiological mechanisms regulating it are largely unknown. Barua et al. study Arabidopsis thaliana and find that some attributes, such as sensitivity to GA, predict germination responses to multiple seasonal cues while others, such as ABA sensitivity and seed-coat properties, predict responses […] More
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