Gene Details:

• MSU gene ID: LOC_Os02g40784
• RAPdb gene ID: Os02g0621300
• Gene Symbol: OsCER1 OsGL1-4 LTR1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• OsCER1 was highly expressed in the tapetum (stage 10) and bicellular pollen cells (stage 11).
• Downregulation of OsCER1 in rice led to sterility, and fewer amyloplasts within the mature pollen grains.
• Furthermore, significantly altered levels of expression of genes involved in the pollen development were exhibited in the OsCER1 knocked down plants.
• These results indicate that OsCER1 is critical for VLC alkanes biosynthesis, plastids differentiation, and pollen development.
• OsCER1 Plays a Pivotal Role in Very-Long-Chain Alkane Biosynthesis and Affects Plastid Development and Programmed Cell Death of Tapetum in Rice (Oryza sativa L.).
• In addition, the downregulation of OsCER1 in rice caused delayed tapetal programmed cell death and abnormal development of plastids in the tapetal cells.
• OsGL1-4 is preferentially expressed in pollen and tapetal cells, and is required for the synthesis of very-long-chain alkanes.
• Gas chromatography-mass spectrometry analysis suggested the humidity-sensitive male sterility of OsGL1-4 was probably due to a significant reduction in C25 and C27 alkanes.
• OsCER1 regulates humidity-sensitive genic male sterility through very-long-chain (VLC) alkane metabolism of tryphine in rice.
• Phenotypic investigation of NPB and LTR1 suggested that LTR1 showed rumpled leaf with uneven distribution of bulliform cells and sclerenchyma cells, and disordered vascular bundles.
• A decrease in seed-setting rate in LTR1 led to decreased per-plant grain yield.
• Moreover, LTR1 was sensitive to salt stress, and LTR1 was strongly induced by salt stress.
• Moreover, overexpression of LTR1 enhanced yield in rice and LTR1 positively regulates salt stress by affecting water and ion homeostasis.
• Map-based cloning of LTR1 showed that there was a 2-bp deletion in the eighth exon of LOC_Os02g40784 in LTR1, resulting in a frameshift mutation and early termination of transcription.

Function-related keywords:

• pollen ,  development ,  cell-death ,  tapetum ,  tapetal ,  pollen-development ,  tapetal-programmed-cell-death ,  sterility ,  male-sterility ,  leaf ,  vascular-bundle ,  grain ,  stress ,  grain-yield ,  map-based-cloning ,  salt ,  yield ,  salt-stress ,  homeostasis

Literature:

• Tapetum degeneration retardation is critical for aliphatic metabolism and gene regulation during rice pollen development .  DOI:  10.1093/mp/ssn028 ;  PMID:  19825565
• OsCER1 Plays a Pivotal Role in Very-Long-Chain Alkane Biosynthesis and Affects Plastid Development and Programmed Cell Death of Tapetum in Rice (Oryza sativa L.) .  DOI:  10.3389/fpls.2018.01217 ;  PMID:  30237804
• Deficiency of very long chain alkanes biosynthesis causes humidity-sensitive male sterility via affecting pollen adhesion and hydration in rice .  DOI:  10.1111/pce.13637 ;  PMID:  31380565
• OsCER1 regulates humidity-sensitive genic male sterility through very-long-chain (VLC) alkane metabolism of tryphine in rice .  DOI:  10.1071/FP20168 ;  PMID:  33487216
• LEAF TIP RUMPLED 1 Regulates Leaf Morphology and Salt Tolerance in Rice .  DOI:  10.3390/ijms23158818 ;  PMID:  35955949

Related News:

Gene Resources:

• NCBI ID:
• UniProt accessions:

Sequences: