Recent Posts

trans-Zeatin in Shoots Drives Nitrate Systemic Signaling

Poitout et al. study how plants forage for nutrients in the soil https://doi.org/10.1105/tpc.18.00011. By Arthur Poitout and Sandrine Ruffel Background: Nitrate, NO3- (the preferential nitrogen [N] source for most of higher plants) is spread unevenly in the soil due to its high mobile property,…

Maintaining Cellular Phosphate

Segami et al. investigate cellular phosphate homeostasis in Arabidopsis. Plant Cell https://doi.org/10.1105/tpc.17.00911 Background: Many biological reactions, including the biosynthesis of DNA, RNA, proteins, and polysaccharides, produce inorganic pyrophosphate (PPi). However, accumulation of PPi…

Phosphate Translocation from Roots to Shoots is Precisely Modulated

Ye et al. discover a protein that mediates phosphate translocation and is dependent on environmental phosphate supply. Plant Cell (2018). https://doi.org/10.1105/tpc.17.00845 By Qing Ye and Yi-Fang Chen Background: Phosphorus is a major essential nutrient for plant growth and development, and phosphate…

A Brake For Nitrogen Starvation Responses

Kiba et al. focus on transcriptional regulation of nitrogen starvation responses. Plant Cell https://doi.org/10.1105/tpc.17.00810 By Takatoshi Kiba Background: Nitrogen availability in the soil profoundly affects plant growth and productivity, and thus crop yield. To meet expanding food demands,…

Rice Leaf Erectness Tied to Phosphorus Efficiency

Ruan et al. discover a protein module that regulates rice leaf inclination in response to soil Pi availability. Plant Cell https://doi.org/10.1105/tpc.17.00738 Background: As an essential element for plant growth, phosphorus (P) is taken up by plant roots as inorganic Pi (Pi) from the soil solution.…

Adjusting Boron Transport by Two-Step Tuning of Levels of the Efflux Transporter BOR1

Boron is an essential plant micronutrient with the narrowest optimal range in the soil of any micronutrient. At neutral pH, boron is present as uncharged boric acid, B(OH)3, which can freely penetrate membranes. Boron plays an important role in cross-linking cell wall components, but boron starvation…

Nitrate Ahoy! Shoot Cytokinin Signals Integrate Growth Responses with Nitrogen Availability

Nutrients are rarely distributed homogenously in soil. Consequently, plants have local and long-distance signaling systems in place to monitor and coordinate both demand and supply of essential macronutrients such as nitrogen (N). The “N-demand” long distance signal emanates from a section of the…

Review: Beyond fossil fuel–driven nitrogen transformations ($) (Science)

Obtaining the high yields needed to feed the human population depends on the application of nitrogen-containing fertilizers to non-leguminous crops, yet the production of these compounds consumes 1 – 2% of global energy output. Plant scientists are familiar with the conversion of  N2  to NH3 by nirogenase…

Developing High-Yield Early-Maturation Crops by Manipulating Nitrogen Utilization

Wang et al. investigate the function of OsNRT1.1A in rice. Plant Cell (2018). https://doi.org/10.1105/tpc.17.00809. By Wei Wang, Bin Hu and Chengcai Chu Background: To cope with an increasing global population and decreasing availability of arable land, improving crop yield is a major agricultural…