Recent Posts

Review. Milestones in understanding phosphorus uptake, transport, sensing, use, and signaling

Phosphorus (P) is an essential nutrient and critical component of nucleic acids, phospholipids, and other molecules. Yang et al. provide a historical (since 1996) overview of the processes controlling its uptake and use. Plants take up P from the rhizosphere primarily in the form of orthophosphate (Pi).…

Review: CEP hormones at the nexus of nutrient acquisition and allocation, root development, and plant–microbe interactions

C-TERMINALLY ENCODED PEPTIDE (CEP) is a multigene family of peptide hormones originally described as systemic long-distance signals in response to nitrogen limitation. Over the years since the discovery of these peptide hormones, the literature on CEP biology has expanded the repertoire of developmental…

Review: Development of organs for nutrient uptake in parasitic plants and root nodule symbiosis

This review by Cui et al. makes the interesting comparison between the developmental processes involved in root nodule formation and haustoria formation by roots of parasitic plants. As the authors observe, both are organs that are produced for the purpose of nutrient acquisition through “intimate…

Review: Difficult situations cause blushing in plants, much as they do in people

As with people, plants blush in difficult circumstances. Situations such as nutrient stress make plants uncomfortable, resulting in the accumulation of anthocyanins in different plant tissues and color changes in the tissues. Jezek et al. reviewed how and why anthocyanins accumulate in foliar tissues…

MicroRNA encoded peptide affects arsenic sensitivity

MicroRNAs (miRNAs) are small non-coding RNAs that down-regulate their targets through translational repression or mRNA cleavage.  Some pri-miRNAs encode small regulatory peptides (miPEP) which regulate plant growth and development by modulating subsequent miRNA expression. How different biotic or abiotic…

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…