Gene Details:

  • Gene ID:
  • Gene Symbol: Nt-RhoGDI2
  • Gene Name: Pollen tube RhoGDI2
  • Genome:
  • Species: Nicotiana tabacum

Functional Descriptions:

  • Nt-RhoGDI2 regulates Rac/Rop signaling and polar cell growth in tobacco pollen tubes.
  • Nt-RhoGDI2, a homolog of guanine nucleotide dissociation inhibitors (GDIs) regulating Rho signaling in animals and yeast, is co-expressed with the Rac/Rop GTPase Nt-Rac5 specifically in tobacco (Nicotiana tabacum) pollen tubes.
  • Transient over-expression of Nt-Rac5 and Nt-RhoGDI2 depolarized or inhibited tobacco pollen tube growth, respectively.
  • Nt-RhoGDI2 was localized to the pollen tube cytoplasm and effectively transferred co-over-expressed YFP–Nt-Rac5 fusion proteins from the plasma membrane to this compartment.
  • Based on these observations, we propose that Nt-RhoGDI2-mediated recycling of Nt-Rac5 from the flanks of the tip to the apex has an essential function in the maintenance of polarized Rac/Rop signaling and cell expansion in pollen tubes.

Literature:

Gene Resources:

Orthologs:

Sequences:

  • CDS Sequence:
  • Protein Sequence: