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The rice Os01g0248900 was reported as OsEXPA8 in 2013 [1] by researchers from Korea, Mongolia, Russia.

Annotated Information

Figure 3. Morphological changes in 35S :: OsEXPA8 transgenic lines.[1].

Gene Symbol

  • Os01g0248900 <=> OsEXPA8,EXPA8


  • Accumulation of OsEXPA8 in Cell Wall Enlarges Cell Size.
  • The Growth of Suspension-cultured Cells is Significantly Increased by OsEXPA8 Overexpression
  • Overexpression of OsEXPA8, Improves Rice Growth and Root System Architecture by Facilitating Cell Extension

Phenotypic analysis

  • Overexpression of OsEXPA8 yielded pleiotropic phenotypes in the root system architecture (Figure 3A–F), plant height, leaf number and leaf size (Figure 3G and H).
  • Compared to wild-type plants, 35S::OsEXPA8 transgenic lines showed similar morphological phenotypes: the length of primary roots (Figure 3A) and number of lateral roots were significantly increased (t-test, P,0.01).
  • The size of root hairs in the root apex of 35S::OsEXPA8 plants has been increased clearly by stereoscope (Figure 3B and C) and Cryo-SEM images (Figure 3D and E). At maturity, the difference of the root system architecture between transgenic lines and wild-type plants was also significant, and transgenic lines developed more and longer roots (including lateral and adventurous roots) (Figure 3F).

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Labs working on this gene

  • Bioengineering College, Chongqing University, Chongqing, China


  1. 1.0 1.1 Ma N, Wang Y, Qiu S, Kang Z, Che S, Wang G, Huang J. Overexpression of OsEXPA8, a root-specific gene, improves rice growth and root system architecture by facilitating cell extension. PLoS One. 2013 Oct 4;8(10):e75997. doi: 10.1371/journal.pone.0075997. eCollection 2013. PubMed PMID: 24124527;

Structured Information