Recent Posts

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…

Accelerated flowering time reduces lifetime water use without penalizing reproductive performance in Arabidopsis (Plant Cell Environ)

As climate change proceeds, the availability of fresh water is decreasing. Luckily, the variation in water use efficiency within and between species provides tools necessary to breed plants for future climate. However, water use is often studied at the vegetative level. Ferguson et al. observed that…

β-cyclocitral, a novel regulator of root growth ($) (PNAS)

Root growth and branching have essential roles in nutrient and water uptake, and are common targets in crop improvement. Dickinson et al. looked for novel apocarotenoids involved in root development and found that dihydroactinidiolide (DHAD) and β-cyclocitral increase lateral root (LR) branching in…

Post-transcriptional regulation of FLOWERING LOCUS T modulates heat-dependent source-sink development in potato (Curr Biol)

Tuber formation (tuberization) in potatoes is controlled by both endogenous and environmental signals particularly day length and temperature. Long days and high temperature impede tuberization while it is enhanced by short days and low temperature. When conditions are favourable for tuberization, shoot-derived…

A mobile auxin signal connects temperature sensing in cotyledons with growth responses in hypocotyls (Plant Phys)

An increase in ambient temperature affects plant growth and development; for instance, high temperatures trigger elongation in petioles, hypocotyls, and roots in Arabidopsis seedlings. Bellstaedt et al. studied the spatial relationships in sensing, signaling and growth responses to high temperature in…

Two opposing pathways independently regulate symbiotic nodulation in Medicago truncatula ($) (Plant Physiol)

To optimize usage of nutrient, legumes utilize multiple strategies to regulate root nitrogen-fixing symbiotic nodulation. Excessive nodulation may hamper plant’s normal growth, so fine-tuning it is important for plant survival. Laffont et al. report that there are two independent pathways systematically…

Leaf senescence in Arabidopsis thaliana is regulated by a histone H3K4 demethylase (Plant Cell)

Leaf senescence is the final stage of leaf development where the organ turns yellow and programmed cell death occurs. While it is generally understood that the regulation of senescence associated genes (SAGs) is dependent on the trimethylation of histone H3 at lysine 4 (H3K4me3), the exact mechanism…

(Auxin) Don't stop me now. Auxin export from proximal fruits drives arrest in competent inflorescence meristems (bioRxiv)

The control of the beginning and the ending of the reproductive phase in plants are important factors related to seed and fruit production. Almost one century ago, it was noticed that fruit removal delays the floral arrest, and a model was proposed in 1994 by Hensel et al., highlighting the role of fruits…