
The Long and the Short of It: GA 2-oxidaseA9 Regulates Plant Height in Wheat
Blog, Plant Physiology: News and Views, ResearchThe discovery of semidwarfing genes in wheat and rice was a crucial turning point of the Green Revolution in the late 1960s. The Green Revolution aimed to maintain per capita food supplies worldwide despite the projected doubling of global population by the end of the 20th century. Its main features…

Origin of Plant R Genes
Plant Physiology, Plant Physiology: On The Inside, ResearchPlants rely on two branches of the innate immunity system to prevent or eliminate microbial infections: one involves cell surface receptors to respond to pathogen- or microbe- associated molecular patterns, and the other acts inside plant cells by using proteins with nucleotide-binding site (NBS) and…

Phosphorous Deficiency and Photosynthesis
Plant Physiology, Plant Physiology: On The Inside, ResearchPhosphorus (P) is an essential macronutrient, and P deficiency limits plant productivity. P influences many aspects of photosynthesis P-deficient plants typically remain green and do not develop leaf chlorosis and yet P starvation immediately affects CO2 assimilation. Specifically, P deficiency is believed…

Leaf Metabolism in Response to Dark
Plant Physiology, Plant Physiology: On The Inside, ResearchOne of the more prevalent methods used to initiate plant senescence under laboratory conditions is to grow plants in prolonged dark conditions. The course of “dark-induced senescence” depends upon whether individual leaves on the plant or the entire plant is darkened: an individually darkened leaf…

Iron Accumulation and Fraxetin, a Coumarin
Plant Physiology, Plant Physiology: On The Inside, ResearchSoil pH has a strong influence on the availability of mineral nutrients and the distribution of species in natural plant communities. Iron (Fe) solubility decreases dramatically with increasing pH. In alkaline soils, calcifuge (“chalk-fleeing”) species are unable to compete due to their inability…

Calcium Dynamics in Chloroplasts
Plant Physiology, Plant Physiology: On The Inside, ResearchTransient changes in intracellular free Ca2+ concentration ([Ca2+]) are involved in the sensing of a wide variety of abiotic and biotic stimuli iIn plants. The unique spatiotemporal patterns in [Ca2+] that result enable specific stimulus-response coupling. Several intracellular compartments of the plant…

The Origins of Protein Storage Vacuoles
Plant Physiology, Plant Physiology: On The Inside, ResearchDuring seed development, protein reserves and minerals are stored in specialized vacuoles called protein storage vacuoles (PSVs). PSVs are functionally different from the lytic vacuoles (LVs) that serve a lysosome-like role in vegetative plant tissues. Embryonic vacuole (EVs) are also present during…

MicroProteins as the First Step toward a Master Key for Posttranslational Regulation
Plant Physiology, Plant Physiology: News and Views, Research
Determining the function of a gene often relies on transgenic plants with altered transcriptional or translational levels. This is usually achieved through overexpression, knockout, or knockdown. However, each of these approaches has specific advantages and drawbacks. For instance, knockouts, which…

Update: Phytochrome, Carbon Sensing, Metabolism, and Plant Growth Plasticity
Blog, Plant Physiology, Plant Physiology: UpdatesBy Johanna Krahmer, Ashwin Ganpudi, Ammad Abbas, Andrés Romanowski, and Karen J. Halliday
Plants continuously monitor fluctuations in their environment and actively adjust their metabolism to cope with variations in light and carbon resource availability. However, the links between photoreceptor signaling…
