Recent Posts

Tansley Insight: Analyzing the impact of autotrophic and heterotrophic metabolism on the nutrient regulation of TOR (New Phytol.)

A protein kinase, target of rapamycin (TOR), controls cell growth and metabolism in all eukaryotes. The role of TOR in regulating synthesis and breakdown of organic compounds in response to nutrients, hormones and cellular energy to promote growth and development is universal in autotrophs and heterotrophs.…

Root acid phosphatases and rhizobacteria synergistically enhance white lupin and rice phosphorus acquisition (Plant Physiol)

Phosphorus (P, Pi in the form of inorganic orthophosphate) is crucial for plant homeostasis because it is a plant growth-limiting factor. White lupin is an excellent crop model to study Pi changes due to the development of cluster roots (CR). CR are composed of rootlets that allow a more efficient Pi…

NLP7-CRF-PIN, the nitrate-cytokinin-auxin crosstalk module, conveys root nitrate signals and regulates shoot growth adaptive responses (PNAS)

Nitrate, the prominent form of nitrogen used by most land plants, is a signal regulating plant growth and development. Nitrate sensing by roots not only regulates root development to facilitate nutrient foraging, but also the growth of distant plant organs. Cytokinin is a mobile signal coordinating nitrate…

Plants’ PHR2-controlled phosphate starvation response regulates fungal symbiosis in rice (Nature Comms)

Plants’ interaction with microbes in the rhizosphere affects their health and productivity. Plant-arbuscular mycorrhiza (AM) fungi symbiosis is associated with almost 80% of land plants. The fungi provide phosphate, stress tolerance, and firmness to the soil in exchange for carbon. While low phosphate…

Review: Molecular regulators of nitrate response in plants (Curr. Biol.)

Nitrate is the major form of nitrogen used by plants in an aerobic crop cultivation scenario. Lamig et al. review recent additions to the already vast knowledge of nitrate signaling. A first line of regulation concerns nitrate uptake through post-transcriptional and post-translational regulation of nitrate…

Review: Protein phosphorylation “toggle switch” for plant iron balance (Trends Plant Sci)

Protein phosphorylation and dephosphorylation act as a switch regulating a multitude of protein properties, be it their activity, interaction with other proteins, stability, or even cellular localization. This review by Li et al. describs the many ways that protein phosphorylation contributes to iron…

PDX1.1-dependent vitamin B6 synthesis alleviates ammonium toxicity-associated ROS production (Mol Plant)

Ammonium is a nitrogen form preferred by many plant species. However, high ammonium concentrations lead to decreased primary root elongation due to membrane depolarization and lower apoplastic pH.  Liu et al. report that ammonium toxicity results in iron-dependent reactive oxygen species (ROS) production…

Nitrate transporter NPF7.9 is a regulator nitrogen use efficiency and stress-induced nitrate allocation to roots in rice (Plant Physiol)

In addition to its role as a nutrient and a developmental signal, nitrate regulates stress responses in plants. By homology to nitrate transporters previously identified in Arabidopsis as contributing to stress induced-nitrate allocation to roots (SINAR) and nitrogen use efficiency (NUE), Guan et al.…

Crosstalk between phosphate transport and plant immunity (Curr. Biol.)

Plants have evolved signaling cascades to survive biotic and abiotic stresses, and recent studies have shown that there is crosstalk between many of these pathways.  In a recent study, Dindas et al. developed a micro-electrode-based system to detect active inorganic phosphate (Pi) transport in Arabidopsis…