GS5

2015-01-20 | Categories genes  | Tags grain width  grain size  grain  yield  abscisic acid 

• Information
  • Symbol: GS5
  • MSU: LOC_Os05g06660
  • RAPdb: Os05g0158500
• Publication
  • Natural variation in GS5 plays an important role in regulating grain size and yield in rice, 2011, Nat Genet.
  • Differential expression of GS5 regulates grain size in rice., 2015, J Exp Bot.
  • Bin-based genome-wide association studies reveal superior alleles for improvement of appearance quality using a 4-way MAGIC population in rice, 2020, J Adv Res.
• Genbank accession number
  • JN256055
  • JN256056
  • JN256057
  • JN256058
  • JN256055
  • JN256056
  • JN256057
  • JN256058
  • JN256055
  • JN256056
  • JN256057
  • JN256058
  • JN256055
  • JN256056
  • JN256057
  • JN256058
• Key message
  • We showed that the quantitative trait locus (QTL) GS5 in rice controls grain size by regulating grain width, filling and weight
  • GS5 encodes a putative serine carboxypeptidase and functions as a positive regulator of grain size, such that higher expression of GS5 is correlated with larger grain size
  • The results suggest that natural variation in GS5 contributes to grain size diversity in rice and may be useful in improving yield in rice and, potentially, other crops(2)
  • Natural variation in GS5 plays an important role in regulating grain size and yield in rice
  • Differential expression of GS5 regulates grain size in rice.
  • GS5 is a positive regulator of grain size such that grain width, filling, and weight are correlated with its expression level
  • Previous work suggested that polymorphisms of GS5 in the promoter region might be responsible for the variation in grain size
  • Enhanced expression of GS5 competitively inhibits the interaction between OsBAK1-7 and OsMSBP1 by occupying the extracellular leucine-rich repeat (LRR) domain of OsBAK1-7, thus preventing OsBAK1-7 from endocytosis caused by interacting with OsMSBP1, providing an explanation for the positive association between grain size and GS5 expression
  • These results advanced our understanding of the molecular mechanism by which GS5 controls grain size
  • These two polymorphs altered the responses of the GS5 alleles to abscisic acid (ABA) treatments, resulting in higher expression of GS5-1 than of GS5-2 in developing young panicles
• Connection
  • GS5, qGW8~OsSPL16~GW8, Natural Variation in OsMKK3 Contributes to Grain Size and Chalkiness in Rice., We showed that OsSPL16, GS5, and GIF1 have a substantial effect on the OsMKK3-regulated grain size pathway

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