Recent Posts

Review: Revolutions in agriculture chart a course for targeted breeding of old and new crops ($) (Science)

A few traits are associated with domestication across many species. Eshed and Lippman provide an overview of the changes to plant stature and flowering time that have been repeatedly selected by our ancestors. By comparing the molecular underpinnings of these traits across crops, it becomes clear that…

teosinte branched1 and the control of bud dormancy and growth in maize (Nature Comms)

Branching has a significant impact on plant architecture. Maize, a domesticated species, has lower branching levels in comparison to its wild ancestor teosinte. Axillary branching is the result of lateral buds growth. Some factors such as phytohormones and transport of sugars are related to bud activation/dormancy…

Nuclear-cytoplasmic partitioning of ARF proteins controls auxin responses ($) (Mol Cell)

ARF (Auxin Response Factor) transcription factor proteins contain three domains: an N-terminal DNA-binding domain, a variable middle region, and a C-terminal PB1 domain. Powers et al. found that ARF7 and ARF19 accumulate as large-order assemblies in the cytoplasmic region of mature root cells, but the…

To be in Petri or in soil, that is the question (Mol Plant)

Frequently, research on root growth in Arabidopsis has been carried out in transparent Petri dishes, although in the natural environment the soil-buried root actually grows in complete darkness. It is an essential question to check if experimental results reflect the natural growth of plants. It is well-known…

Phosphorylation-mediated dynamics of nitrate transceptor NRT1.1 regulate lateral root growth (Plant Physiol)

Nitrate is an important plant nutrient and multiple transporters have been identified in different plant species. NRT1.1 (NITRATE TRANSPORTER 1.1) belonging to the MFS (Major Facilitator Superfamily) has been shown to transport nitrate and auxin (IAA, Indole 3-acetic acid). This dual affinity transporter…

Review: Developmental responses to water and salinity in root systems ($) (Annu Rev Cell Biol)

Plants lack organs that are analogous to human ears, eyes or fingertips, yet they can detect changes in their environment. In this review, Dinneny describes how sensing heterogeneities in salt and water leads to changes in root architecture, optimizing soil foraging. The root tip typically follows the…

Predicting metabolism during growth by osmotic cell expansion (bioRxiv)

Growth is driven by cell expansion, which is driven by both synthesis of metabolites and osmotically-driven expansion. This latter contribution is typically overlooked in metabolic flux analysis. To remedy this, Shameer et al. have developed a model, GrOE-FBA (Growth by Osmotic Expansion- Flux Balance…

Root system depth is shaped by EXOCYST70A3 via modulation of auxin transport (Cell)

The angle at which roots grow into the soil is modulated by the interaction between genetics and environment, and involves the gravity perception and response pathways including auxin transporters. Ogura et al. did a GWAS analysis of the gravitropic response of different Arabidopsis accessions in…

Pinstatic acid promoters auxin transport by inhibiting PIN internalization (Plant Physiol)

Auxin transport regulated by directional transporters such as PIN (PIN-FORMED) proteins ensures maintenance of proper auxin levels for growth and development. Plants modulate auxin flow by regulating the localization of PIN through exocytosis and endocytosis allowing recycling of PIN protein within a…