PSS1

2015-01-20 | Categories genes  | Tags meiotic  sterility  pollen  anther  sterile  fertility  spikelet  anther development  growth  meiosis  panicle 

• Information
  • Symbol: PSS1
  • MSU: LOC_Os08g02380
  • RAPdb: Os08g0117000
• Publication
  • Fine mapping of pss1, a pollen semi-sterile gene in rice Oryza sativa L., 2007, Theor Appl Genet.
  • Pollen semi-sterility1 encodes a kinesin-1-like protein important for male meiosis, anther dehiscence, and fertility in rice, 2011, Plant Cell.
• Genbank accession number
  • AK287457
• Key message
  • Together, our results suggest that PSS1 defines a novel member of the kinesin-1 family essential for male meiotic chromosomal dynamics, male gametogenesis, and anther dehiscence in rice
  • In this report, we found the female gamete of W207-2 was normal, and its semi-sterility was unaffected by growth duration but was conditioned by a recessive nuclear gene whose action leads to pollen semi-sterility and anther indehiscence, and the gene was named as pss1 (pollen semi-sterile)
  • Fine mapping of pss1, a pollen semi-sterile gene in rice (Oryza sativa L.)
  • Here, we describe a rice pollen semi-sterility1 (pss1) mutant, which displays reduced spikelet fertility (~40%) primarily caused by reduced pollen viability (~50% viable), and defective anther dehiscence
  • Furthermore, PSS1 expression is significantly upregulated during anther development and peaks during male meiosis
  • Consistent with this, lagging chromosomes and chromosomal bridges were found at anaphase I and anaphase II of male meiosis in the pss1 mutant
  • PSS1 is broadly expressed in various organs, with highest expression in panicles
• Connection

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