Tag: Hormones and Growth Regulators

We're excited to annouce the publication of The Plant Cell's latest Teaching Tool, "Small and mighty: Peptide hormones in plant biology," by Sonali Roy, Peter Lundquist, Michael Udvardi, and Wolf-Rüdiger Scheible, available without subscription at Plantae.org. A phytohormone (plant hormone) is defined…

Plants integrate signals in the form of light, humidity, temperature, CO2 concentrations and daily circadian rhythms. In addition, plants encounter pathogens, pests, herbivores and other stressors. Physiological processes like responding to stimuli, plant growth and development are usually governed and…

As gatekeepers between the outside world and the interior of the leaf, guard cells are extraordinarily sensitive to their environment. Closing keeps out pathogens and keeps in water vapor, but opening is needed to admit CO2. The web of interactions that control stomatal aperture are also correspondingly…

How do you make the invisible visible? It’s a question that crops up again and again in molecular biology. Abscisic acid (ABA) is one of the most important hormones in plants and is essential for survival in suboptimal conditions. Despite this, we have only a basic understanding of where and when this…

The diverse responses of rice to flooding are really interesting. Many varieties die, some survive by essentially becoming metabolically quiescent to conserve their energy (which involves the Sub1 pathway), and some, called deepwater rice, respond through rapid elongation that elevates their leaves above…

Wang et al. show that abscisic acid-inducible genes encode lipid degrading enzymes that release polyunsaturated fatty acids from chloroplast lipids as precursors for jasmonic acid production leading to biotic defenses in Arabidopsis. Plant Cell doi.org/10.1105/tpc.18.00250 By Kun Wang and Igor Houwat Background:…

Auxin and cytokinin play critical roles in determination of cell fate in the shoot apical meristem (SAM). Until now auxin's role was thought to be confined to the peripheral zone (PZ), promoting cell differentiation and organogenesis, mediated by AR5/MP. However, studies using GC-MS have shown the presence…

Roots explore the soil for available water and nutrients, with deep roots providing water from the lower soil layers (Uga et al., 2015) and highly branched roots searching the soil for less-mobile nutrients such as phosphate, zinc, and manganese. Root architecture results from plant developmental programs,…