Similar Datasets
Project description:Plants display remarkable adaptability to varying light conditions, crucial for their optimal growth and development. Here, we investigate the functional significance of ATHB2-miP, a microProtein arising from an alternative transcript of the ATHB2 gene, in both white light and shade environments, supported by comprehensive phenotyping experiments. ATHB2, a homeodomain-leucine zipper transcription factor, is known for its involvement in growth regulation. By employing genetic, transcriptomic analyses, and phenotyping experiments, we dissect the regulatory role of ATHB2-miP. Transcriptomics unravel genes differentially induced and repressed upon ATHB2-miP expression, elucidating its impact on growth-related pathways. Notably, ATHB2-miP's expression responds to shade conditions, suggesting its role in light-mediated responses. Our research underscores ATHB2-miP's multifaceted contribution to plant growth and development, emphasizing its potential as a pivotal player in light-responsive gene regulation.
2024-05-14 | GSE241975 | GEO
Project description:Plants display remarkable adaptability to varying light conditions, crucial for their optimal growth and development. Here, we investigate the functional significance of ATHB2-miP, a microProtein arising from an alternative transcript of the ATHB2 gene, in both white light and shade environments, supported by comprehensive phenotyping experiments. ATHB2, a homeodomain-leucine zipper transcription factor, is known for its involvement in growth regulation. By employing genetic, transcriptomic analyses, and phenotyping experiments, we dissect the regulatory role of ATHB2-miP. Transcriptomics unravel genes differentially induced and repressed upon ATHB2-miP expression, elucidating its impact on growth-related pathways. Notably, ATHB2-miP's expression responds to shade conditions, suggesting its role in light-mediated responses. Our research underscores ATHB2-miP's multifaceted contribution to plant growth and development, emphasizing its potential as a pivotal player in light-responsive gene regulation.
2024-05-14 | GSE241974 | GEO
Project description:Plants display remarkable adaptability to varying light conditions, crucial for their optimal growth and development. Here, we investigate the functional significance of ATHB2-miP, a microProtein arising from an alternative transcript of the ATHB2 gene, in both white light and shade environments, supported by comprehensive phenotyping experiments. ATHB2, a homeodomain-leucine zipper transcription factor, is known for its involvement in growth regulation. By employing genetic, transcriptomic analyses, and phenotyping experiments, we dissect the regulatory role of ATHB2-miP. Transcriptomics unravel genes differentially induced and repressed upon ATHB2-miP expression, elucidating its impact on growth-related pathways. Notably, ATHB2-miP's expression responds to shade conditions, suggesting its role in light-mediated responses. Our research underscores ATHB2-miP's multifaceted contribution to plant growth and development, emphasizing its potential as a pivotal player in light-responsive gene regulation.
2024-05-22 | GSE267983 | GEO
Project description:The ATHB2 microProtein affects plant development and the shade avoidance response
| PRJNA1010832 | ENA
Project description:The ATHB2 microProtein affects plant development and the shade avoidance response (PEAT)
| PRJNA1010837 | ENA
Project description:The ATHB2 microProtein affects plant development and the shade avoidance response (RNA-Seq)
| PRJNA1010838 | ENA
Project description:The ATHB2 microProtein affects plant development and the shade avoidance response [Iso-seq]
| PRJNA1113987 | ENA
Project description:Plants have evolved strategies to avoid shade and optimize the capture of sunlight. While some species are tolerant to shade, plants such as Arabidopsis thaliana are shade-intolerant and induce elongation of their hypocotyl to outcompete neighboring plants. We report the identification of a developmental module acting downstream of shade perception controlling vascular patterning. We show that Arabidopsis plants react to shade by increasing the number and types of water-conducting tracheary elements in the vascular cylinder to maintain vascular density constant. Mutations in genes affecting vascular patterning impair the production of additional xylem and also show defects in the shade-induced hypocotyl elongation response. Comparative analysis of the shade-induced transcriptomes revealed differences between wild type and vascular patterning mutants and it appears that the latter mutants fail to induce sets of genes encoding biosynthetic and cell wall modifying enzymes. Our results thus set the stage for a deeper understanding of how growth and patterning are coordinated in a dynamic environment.
| S-EPMC7153905 | biostudies-literature
Project description:Global food production is set to keep increasing despite a predicted decrease in total arable land [1]. To achieve higher production, denser planting will be required on increasingly degraded soils. When grown in dense stands, crops elongate and raise their leaves in an effort to reach sunlight, a process termed shade avoidance [2]. Shade is perceived by a reduction in the ratio of red (R) to far-red (FR) light and results in the stabilization of a class of transcription factors known as PHYTOCHROME INTERACTING FACTORS (PIFs) [3, 4]. PIFs activate the expression of auxin biosynthesis genes [4, 5] and enhance auxin sensitivity [6], which promotes cell-wall loosening and drives elongation growth. Despite our molecular understanding of shade-induced growth, little is known about how this developmental program is integrated with other environmental factors. Here, we demonstrate that low levels of NaCl in soil strongly impair the ability of plants to respond to shade. This block is dependent upon abscisic acid (ABA) signaling and the canonical ABA signaling pathway. Low R:FR light enhances brassinosteroid (BR) signaling through BRASSINOSTEROID SIGNALING KINASE 5 (BSK5) and leads to the activation of BRI1 EMS SUPPRESSOR 1 (BES1). ABA inhibits BSK5 upregulation and interferes with GSK3-like kinase inactivation by the BR pathway, thus leading to a suppression of BES1:PIF function. By demonstrating a link between light, ABA-, and BR-signaling pathways, this study provides an important step forward in our understanding of how multiple environmental cues are integrated into plant development.
| S-EPMC6538826 | biostudies-literature
Project description:Shade-avoiding plants can detect the presence of neighboring vegetation and evoke escape responses before canopy cover limits photosynthesis. Rapid stem elongation facilitates light foraging and enables plants to overtop competitors. A major regulator of this response is the phytochrome B photoreceptor, which becomes inactivated in light environments with a low ratio of red to far-red light (low R:FR), characteristic of vegetational shade. Although shade avoidance can provide plants with a competitive advantage in fast-growing stands, excessive stem elongation can be detrimental to plant survival. As such, plants have evolved multiple feedback mechanisms to attenuate shade-avoidance signaling. The very low R:FR and reduced levels of photosynthetically active radiation (PAR) present in deep canopy shade can, together, trigger phytochrome A (phyA) signaling, inhibiting shade avoidance and promoting plant survival when resources are severely limited. The molecular mechanisms underlying this response have not been fully elucidated. Here, we show that Arabidopsis thaliana phyA elevates early-evening expression of the central circadian-clock components TIMING OF CAB EXPRESSION 1 (TOC1), PSEUDO RESPONSE REGULATOR 7 (PRR7), EARLY FLOWERING 3 (ELF3), and ELF4 in photocycles of low R:FR and low PAR. These collectively suppress stem elongation, antagonizing shade avoidance in deep canopy shade.
| S-EPMC8271815 | biostudies-literature