Recent Posts

DRT111/SFPS splicing factor controls ABA sensitivity during seed development and germination (Plant Physiol)

Abscisic acid (ABA) acts on different plant physiological and developmental processes by quite complex mechanisms. In fact, some of these processes interact with light signaling and some are controlled by alternative splicing. In this paper, Punzo et al. show that DRT111 – a splicing factor previously…

A molecular link between photoreceptors and jasmonates (Nature Plants)

Plants balance their efforts on growth and defense depending on the situation. Competitive conditions signaled by the low ratios of red (R) to far-red (FR) light suppress defense responses mediated by the plant hormone jasmonate (JA), presumably for allocating more resources to promote plant growth.…

The M3Ks, a missing component discovered in the early ABA core signaling module (Nature Comms)

About a decade ago, the ABA receptors [PYR-ABACTIN RESISTANCE (PYR/PYL)/REGULATORY COMPONENT OF ABA RECEPTOR (RCAR)] were discovered, establishing the PYL-PP2C-SnRK2s core signalling module, in which ABA-binding to PYR/PYL receptors inhibits PP2C phosphatases, leading to activation of SnRK2 kinases,…

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…

Transcription factor NF‐YB21 positively regulate the root growth in Populus (New Phytol)

Nuclear factor Y (NF-Y) proteins are heterotrimeric transcription factors made up of A, B and C subunits that exist in higher eukaryotes. Previous work has implicated NF-Ys in root growth. Recently, Zhou et al. isolated a root-specific NF-Y family transcription factor in Populus designated as PdNF-YB21.…

Heat tolerance regulated by an ancient jasmonate signaling pathway (Curr. Biol)

Jasmonate responses are regulated not only by the well-studied pair of the bioactive hormone jasmonoyl-isoleucine (JA-Ile) and the receptor COI1, but also the cyclopentenone OPDA and the JA-Ile precursor dn-OPDA can activate jasmonate signaling. However, the OPDA/dn-OPDA signaling and their physiological…

Review: Evolution of plant hormone response pathways ($) (Annu. Rev. Plant Biol.)

Spatio-temporal action of hormones is essential for proper growth and development of plants. In this review, Blázquez et al. discuss the evolution of the shared features of  signaling pathways of different plant hormones. Auxin, jasmonic acid, gibberellic acid, and strigolactone signaling pathways…

COP1 destabilizes DELLA proteins in Arabidopsis (bioRxiv)

The canonical model of gibberellic acid (GA) signaling pathway includes the recognition of the hormone by the receptor GID1 and the further degradation of the DELLA proteins by the proteasome. In this paper, Blanco-Touriñan et al. observed in Arabidopsis that the DELLA protein REPRESSOR OF ga1-3 (RGA)…

Review. Same, but different: growth responses of primary and lateral roots ($) (J. Exp. Bot.)

Lateral roots arising from programmed cell division from primary roots in both monocots and dicots share some similarities and dissimilarities in developmental signaling. In this review, Waidmann et al. discuss lateral root organogenesis and elongation with respect to hormone, nutrient, and abiotic conditions.…