| Categories genes  | Tags temperature  seed germination  homeostasis  seed  defense  defense response  breeding 
  • Information
  • Publication
  • Genbank accession number
  • Key message
    • Previously, qLTG3-1, a major quantitative trait locus controlling low-temperature tolerance at the germination stage in rice (called low-temperature germinability) was identified, which encodes a protein of unknown function
    • In particular, genes involved in defense responses were up-regulated by qLTG3-1, indicating that qLTG3-1 expression is required for the expression of defense response genes in low-temperature germinability in rice
    • Genome-wide analysis of genes targeted by qLTG3-1 controlling low-temperature germinability in rice
    • Most of these genes might be involved in the process of seed germination itself, and then a focus was made on qLTG3-1 dependently induced or suppressed genes, defined as ‘qLTG3-1 dependent’ genes
    • Twenty-nine ‘qLTG3-1 dependent’ genes with diverse functions were categorized, implying that disruption of cellular homeostasis leads to a wide range of metabolic alterations and diverse cross-talk between various signaling pathways
    • The QTL qLTG3-1 is strongly expressed in the embryo during seed germination
    • To understand the molecular basis of one of these QTLs, qLTG3-1 (quantitative trait locus for low-temperature germinability on chromosome 3), map-based cloning was performed, and this QTL was shown to be encoded by a protein of unknown function
    • Molecular identification of a major quantitative trait locus, qLTG3-1, controlling low-temperature germinability in rice
    • rufipogon qLTG3-1 allele can be utilized for the improvement of LTG in rice breeding programs
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