Recent Blog Posts by Tag

Review: Same tune, different song — cytokinins as virulence factors in plant–pathogen interactions? (COPB)

Many pathogens produce virulence factors that improve their pathogenicity, including in some cases compounds produced by the host, such as the hormone cytokinin. Spallek et al. review the various plant pathogens — spanning from bacteria to parasitic plants — that use cytokinins as virulence factors;…

Intra-Organ Regulation of Shade Responses 


Plants beneath a canopy compete with neighboring plants for light by triggering various physiological responses, collectively known as shade avoidance syndrome. Because of the selective absorption of red (R) light by plants in the upper canopy, plants in the shade are exposed to low R to far-red (FR)…

Multiple Phytohormone Screening Method

Phytohormones are naturally occurring signaling molecules that play key roles in the regulation of plant physiology, development, and adaptation to environmental stimuli. Generally, their concentrations in plant tissues are extremely low (fmol-pmol/g fresh weight, FW). Although certain phytohormones…

Review: Auxin: a molecular trigger of seed development (Genes Devel.) ($)

Seeds are hugely important, providing the opportunity for reproductive dormancy in seed-bearing plants and as a nutrient-dense food source for animals. Seed development involves the formation of three genetically distinct tissues, the embryo, seed coat and endosperm. Although normally dependent on fertilization…

Review: The road to auxin-dependent growth repression and promotion in apical hooks (Curr. Biol.)

We often hear that auxin controls plant growth. In a special issue of Current Biology focused on membranes, Béziat and Kleine-Vehn observe that due to its role in controlling the distribution of auxin transporters (and therefore auxin), it is also reasonable to say that vesicle trafficking controls…

BRI1 and BAK1 interact with G proteins and regulate sugar-responsive growth and development (Nature Comms.)

Sensing sugar is important, especially if you are a plant, as it helps you to decide whether to invest it in new tissues, or rather store it for later. Low levels of glucose promote seedling growth, while high concentrations repress the development. Peng et al. discovered that brassinosteroid signaling…

Comparative analysis of Arabidopsis ecotypes reveals a role for brassinosteroids in root hydrotropism (Plant Physiol.)

Plastic plant growth serves them well, as it ensures efficient exploration of the environment. A plant can direct the growth of its roots towards the water, but the mechanisms behind hydrotropism are still to be fully understood. Miao et al. performed a screen of 30 Arabidopsis accessions for altered…

RH8-PP2CA interaction in ABA signaling ($)

It is well understood that abscisic acid (ABA) inhibits PPC2A phosphatase activity, which subsequently relieves phosphate-induced inhibition of a kinase interacting partner. This pathway composes the ‘core’ ABA signaling pathway, activating process involved in the ABA response such as stomatal closure…

Review: The role of auxin in cell wall expansion (OA)

Cell wall is the outermost boundary for a cell. For the protection of cell, it maintains its rigidity. At the same time, for providing the shape of cells, it is capable of becoming flexible. This means that the cell wall has the capacity to maintain both rigidity and flexibility based on the requirement.…