Entries by Suresh Damodaran

The lateral root cap acts as an auxin sink that controls meristem size (Curr Biol)

During root growth, cellular activities need to be coordinated across tissues. Mambro et al. have identified molecular mechanisms involved in root apical meristem maintenance by auxin homeostasis regulation in lateral root cap (LRC) cells. The cytokinin response regulator ARR1 regulates expression of the auxin transporter PIN5 and an auxin conjugating amidoacyl transferase, GH3-17, in LRC. […]

Review: Brassinosteroid signaling in plant development and adaptation to stress ($) (Development)

In this new review, Riverola et al. highlight the significance of the phytohormone brassinosteroid in plant development and responses to stress. The authors discuss BRL1, LRR-RLK receptor mediated signaling mechanism that is crucial for root development and stress response. This signaling mechanism varies at the tissue specific level. Regions where the receptors are enriched are […]

Independent regulation of symbiotic nodulation by the SUNN negative and CRA2 positive systemic pathways (Plant Physiol) ($)

Autoregulation of nodule development (AON) is a process by which leguminous plants control nodule development. SUNN, a LRR-RLK, and a systemic CLE peptide play a negative role in nodulation through systemic signaling. In this paper Laffont et al. showed the another systemic regulation of nodulation in Medicago by CRA2 (COMPACT ROOR ARCHITECTURE 2), a leucine-rich […]

Multiple transcriptional factors control stomata development in rice (New Phytol) ($)

In the model plant Arabidopsis, stomatal development occurs in a scattered pattern with that avoids direct contact between them. In rice and other monocots, the stomata are distributed in a uniformly oriented manner. Such unique patterning and morphology of stomata intrigued Wu et al. to examine if the transcriptional factors (TFs) identified in Arabidopsis share […]

Root xylem formation and vascular acclimation to water deficit involves endodermal ABA signaling via miR166 ($) (Development)

Abiotic stress influences plant development, with the phytohormone ABA playing an important role. Ramachandran et al. have demonstrated ABA mediated activation of microRNA 166, which regulates expression levels of the HD-ZIP III transcriptional factor family. Exogenously supplied ABA alters xylem patterning due to a change in cell fate, as demonstrated using xylem cell-type specific markers. […]

Review: Cytokinin – A developing story (Trends Plant Sci) ($)

With its diverse chemical structures, the phytohormone cytokinin is significant from embryogenesis to the maturation of plants. In this review, Wybouw and De Rybel highlight in detail cytokinin signaling in multiple plant developmental process including shoot, flower, stomata, root and vascular development. The Type B-ARRs (ARABIDOPSIS RESPONSE REGULATORS) induce multiple cytokinin responsive genes like WUSHEL […]

SOL1 and SOL2 regulate fate transition and cell division in stomatal lineage ($) (Development)

Stomata and pavement cell development in the leaves occur through programmed asymmetric cell division. In this paper the authors demonstrated the role of two CHC domain proteins, SOL1 and SOL2 that were identified previously by the same group to be downstream targets of a bHLH transcriptional factor SPEECHLESS. The two genes are close homologs of […]