Recent Posts

Roles for CHROMATIN REMODELING 4 in Arabidopsis floral transition (Plant Cell)

The time at which flowers appear is critical for plant reproductive success. As such, the vegetative to reproductive growth transition is governed by several cues: environmental (photoperiod, temperature) and endogenous (gibberellins, age). Here, Sang et al. used an elegant forward-genetics approach…

The cis-regulatory codes of response to combined heat and drought stress (bioRxiv)

As sessile organisms, plants must not only respond to a single stress, but multiple stresses at the same time. To understand the DNA regulatory elements that mediate the transcriptional response to heat, drought and combined heat and drought stress, Azodi et al. utilized the known transcription factor…

Transient genome-wide interactions of the master transcription factor NLP7 initiate a rapid nitrogen-response cascade (Nature Comms.)

Transcription factors (TFs) and their genome-wide targets form gene regulatory networks that allow organisms to respond to stimuli. However, conventional biochemical assays only identify a subset of the TF-target interactions. In this paper, Alvarez et al. elucidate the genetic network of NIN-LIKE PROTEIN…

Integration of light signaling with endogenous developmental pathway to regulate flowering (Mol. Plant)

Response to changing environmental conditions is key for plant reproductive success. Previous studies have implicated FAR-RED ELONGATED HYPOCOTYL3 (FHY3) and FAR-RED IMPAIRED RESPONSE1 (FAR1) as inhibitors of flowering in phytochrome A signaling pathway. miR156-targeted SQUAMOSA PROMOTER BINDING PROTEIN…

A feedforward loop controls vascular regeneration and tissue repair through local auxin biosynthesis (Development)

Plants are constantly exposed to biotic and biotic stresses that can cause tissue damage, and, as a response, plants have evolved remarkably plastic regenerative mechanisms in response to wounding. Although some genes required for regeneration have been identified in the Arabidopsis root context, most…

MicroRNAs and the control of stomatal development (PNAS)

Stomata mediate critical functions in plant life: gas exchange, water loss, and some environmental responses. At the molecular level, some bHLH transcription factors and a MAP-kinase pathway control a series of asymmetric and symmetric cell divisions of stomatal stem cells to form a guard cell. In…

The Q-System as a synthetic transcriptional regulator in plants (Front. Plant Biol.)

The ability to reliably induce a transgene has greatly enhanced the study of plant biology. Various chemical inducible system have worked robustly in plants, but plant synthetic biology is still lacking an efficient orthogonal (from outside) inducible system where multiple genes can be controlled at…

Disturbance of floral color pattern by activation of an endogenous virus in aged petunia plants (Plant J)

The red color of petunia petals is due to the presence of anthocyanin pigments, produced in part through the action of the chalcone synthase enzyme.  In the “Red Star”’ variety, expression of the CHS-A gene encoding chalcone synthase is silenced in cells around the midvein through post-transcriptional…

Review: Mechanisms regulating PIF transcription factor activity at the protein level ($) (Physiol. Plant.)

Absorption of red and far-red light by phytochromes dramatically affects plant development, and many of these effects are mediated by the PIF (PHYTOCHROME INTERACTING FACTOR) family of transcription factors. Favero reviews the many ways that PIF activity is regulated beyond through their interactions…