Gene Details:

• MSU gene ID: LOC_Os08g02380
• RAPdb gene ID: Os08g0117000
• Gene Symbol: PSS1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• 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.

Function-related keywords:

• meiotic ,  sterility ,  pollen ,  anther ,  sterile ,  fertility ,  spikelet ,  anther-development ,  growth ,  meiosis ,  panicle

Literature:

• Fine mapping of pss1, a pollen semi-sterile gene in rice (Oryza sativa L.) .  DOI:  10.1007/s00122-006-0491-z ;  PMID:  17279367
• Pollen semi-sterility1 encodes a kinesin-1-like protein important for male meiosis, anther dehiscence, and fertility in rice .  DOI:  10.1105/tpc.109.073692 ;  PMID:  21282525

Related News:

Gene Resources:

• NCBI ID: AK287457
• UniProt accessions:

Sequences: