Os01g0683550

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Annotated Information

Function

The Shortened Uppermost Internode 1(SUI1) family of genes are pivotal for development of rice stems. SUI-family genes regulate the development of intercalary meristem(IM) for internode elongation and also the cell expansion of the panicle stem rachis in rice. The SUI-family genes encode base-exchange types of phosphatidylserine synthases (PSSs), which possess enzymatic activity in a yeast complementary assay.

   SUI-family genes are essential for stem development in rice. . Stem development in rice includes both internode elongation and panicle rachis expansion. The elongation of internodes involves regulation of IM activity, which is controlled by SUI-family genes. SUI1 plays a prominent role in the specification of IM, which is coinciding with reproductive development. Experiment have showedthat sui2 mutations and transgenic plants with down-regulation of SUI1, SUI2, and SUI3 impaired the

development of the panicle. Someone suggest that the conserved function of the SUI-family is to specify stem organs in vegetative and reproductive development. Studies shows that loss-of-function mutations of the only known homolog of SUI in Arabidopsis display pleiotropic phenotypes which include severe dwarfism (Yamaoka et al. 2011), which indicates that SUI1-like genes play pivotal roles in stem development in both dicot and monocot plants.

Expression

   SUI1 is highly expressed in the young panicle, internode, and roots but is rarely expressed in leaves. SUI3 is expressed mainly in the panicle and internode, and SUI2is expressed ubiquitously in all organs
   The SUI-family genes encoded base-exchange types of phosphatidylserine synthases, overexpression of SUI1 and SUI2 can cause outgrowths of internodes during vegetative development. Overexpression and RNA knockdown of SUI-family genes can affecte downstream gene expression related to phospholipid metabolic pathways.Also, the quantity of very long chain fatty acids Phosphatidylserine is affected by transgene of SUI-family genes.

Labs working on this gene

College of Agronomy and Biotechnology of Southwestern University

References

1.Hengfu Yin;Peng Gao;Chengwu Liu;Jun Yang;Zhongchi Liu;Da Luo

 SUI-family genes encode phosphatidylserine synthases and regulate stem development in rice
 Planta, 2013, 237(1): 15-27

2.Yamaoka Y, Yu YB, Mizoi J, Fujiki Y, Saito K, Nishijima M, Lee Y,Nishida I

PHOSPHATIDYLSERINE SYNTHASE1 is required for microspore development in Arabidopsis thaliana,

Plant J, 2011, 67:648–661

Structured Information

ORIGIN

       1 agcagagacc gccgtcgctt ccacagcatt cggctcccat ccatcaccgt agacgagtaa
      61 tcaactccat tgatgccagc ggtgaggtga tggaatatgg atctagtaac gatcagagga
     121 tgcaggacat ggaaatatgg ccgtcggacg gcggcggcgt ggaggaatac gacccgtgga
     181 cggcttggct ttacaagcca cacacggtct cggttctcct tgccggcgca tgcctcctga
     241 tctgggcaag tggggtcctt catccagaga ttacaagctc tcatgataag gtcataccta
     301 ttaaaagggg tgtctgggct atgatcgcag ttttcctagc atactgcact ctccaagcac
     361 cttcaacgat acttattagg cctcatcctg ctgtgtggcg tttggtgcat ggcatggctg
     421 ttgtgtacct tgttgctcta acttttcttc ttttccagaa acgtgatgat gccaggcagt
     481 ttatgaagca ccttcaccct ggtctcggag ttgaactacc agagagatca tatggttctg
     541 actgccgtat gtatgttcca gaaaacccta ccaacagatt tattaatatt caagagacat
     601 tgtttgatga atttgttatt gcccatgtct tgggttggtg gggtaaggca gtaatgatac
     661 ggaaccaact tctcctatgg gtcttgtcag ttggttttga gctcatggag cttacattta
     721 ggcacatgct gccaaatttt aacgagtgtt ggtgggacag tattatattg gatatcatga
     781 tatgtaattg gtttggtgta tttgggcggg gatgcacaca gtccgttact ttgatggcaa
     841 aacatacgaa tgggttggac tgggtaaaaa ggtcattatg tcagttcaca cccgctaaat
     901 gggataagga tcaatggcat cctttcatgg agccaaggag attcatccaa gtgttctgtc
     961 tctgcgtcgg tttcatgaca gtggaactta acaccttctt cctgaaattt tgtctctgga
    1021 ttcctcccag gaaccccttg aaaaccagtg aagaaggtgg gagctttttg ttggctttcg
    1081 ttagctatat gcatggtaga gctgcttata tgcatgaagt ttggacacgg tgagttattt
    1141 tatagtatgt agcatattct tggcaaatta acaagggcat acagtttatg tcgatacatg
    1201 cttggtcagt ctttgtgcta acatgaatca acataaccag gtttgtttca agatccaatg
    1261 cctacttggt tgattactct ttggatttgt gtggggattt ctcttgcgct tttcttgctg
    1321 gaatggtcac gaagg