Investigation of Arabidopsis root skototropism with different distance settings.

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  • Additional Information
    • Source:
      Publisher: Taylor & Francis Country of Publication: United States NLM ID: 101291431 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1559-2324 (Electronic) Linking ISSN: 15592316 NLM ISO Abbreviation: Plant Signal Behav Subsets: MEDLINE
    • Publication Information:
      Publication: 2015- : Philadelphia, PA : Taylor & Francis
      Original Publication: Georgetown, TX : Landes Bioscience
    • Subject Terms:
      Arabidopsis*/metabolism ; Arabidopsis*/genetics ; Arabidopsis*/physiology ; Plant Roots*/metabolism ; Arabidopsis Proteins*/metabolism ; Arabidopsis Proteins*/genetics; Darkness ; Light ; Seedlings/metabolism ; Indoleacetic Acids/metabolism
    • Abstract:
      Plants can activate protective and defense mechanisms under biotic and abiotic stresses. Their roots naturally grow in the soil, but when they encounter sunlight in the top-soil layers, they may move away from the light source to seek darkness. Here we investigate the skototropic behavior of roots, which promotes their fitness and survival. Glutamate-like receptors (GLRs) of plants play roles in sensing and responding to signals, but their role in root skototropism is not yet understood. Light-induced tropisms are known to be affected by auxin distribution, mainly determined by auxin efflux proteins (PIN proteins) at the root tip. However, the role of PIN proteins in root skototropism has not been investigated yet. To better understand root skototropism and its connection to the distance between roots and light, we established five distance settings between seedlings and darkness to investigate the variations in root bending tendencies. We compared differences in root skototropic behavior across different expression lines of Arabidopsis thaliana seedlings ( atglr3.7 ko, AtGLR3.7 OE , and pin2 knockout ) to comprehend their functions. Our research shows that as the distance between roots and darkness increases, the root's positive skototropism noticeably weakens. Our findings highlight the involvement of GLR3.7 and PIN2 in root skototropism.
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    • Contributed Indexing:
      Keywords: Abiotic stress; PIN proteins; glutamate-like receptor; light conditions; root tropism
    • Accession Number:
      0 (Arabidopsis Proteins)
      0 (Indoleacetic Acids)
    • Publication Date:
      Date Created: 20240505 Date Completed: 20240505 Latest Revision: 20240508
    • Publication Date:
      20240508
    • Accession Number:
      PMC11073417
    • Accession Number:
      10.1080/15592324.2024.2348917
    • Accession Number:
      38704856