Gene Details:

• MSU gene ID: LOC_Os10g41780
• RAPdb gene ID: Os10g0567400
• Gene Symbol: OsCAO1 PGL
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• This study characterizes a rice mutant, pale green leaf (PGL), and isolates the gene PGL by using a map-based cloning approach.
• Compared with wild-type plants, PGL exhibits a lower Chl content with a reduced and disorderly thylakoid ultrastructure, which decreases the photosynthesis rate and results in reduced grain yield and quality.
• Moreover, PGL is sensitive to heat stress.
• In addition, PGL exhibits premature senescence in both natural and dark-induced conditions and more severe Chl degradation and reactive oxygen species accumulation than does the wild-type.
• Thus, knockout of OsCAO1 influenced growth period, leaf development and grain quality characters of rice.
• Overall, the result suggests that OsCAO1 also plays important roles in chlorophyll degradation and ROS scavenging to regulate both natural and induced rice senescence.
• In this study, the development of edited lines with pale green leaves by knockout of OsCAO1 gene known as a chlorophyll synthesis process is reported.

Function-related keywords:

• leaf ,  grain ,  map-based-cloning ,  photosynthesis ,  grain-yield ,  yield ,  stress ,  senescence ,  quality ,  reactive-oxygen-species ,  growth ,  leaf-development ,  development ,  grain-quality

Literature:

• Differential regulation of chlorophyll a oxygenase genes in rice .  DOI:  10.1007/s11103-005-2066-9 ;  PMID:  15952067
• PGL, encoding chlorophyllide a oxygenase 1, impacts leaf senescence and indirectly affects grain yield and quality in rice .  DOI:  10.1093/jxb/erv529 ;  PMID:  26709310
• Transcriptomic and physiological analysis of OsCAO1 knockout lines using the CRISPR/Cas9 system in rice .  DOI:  10.1007/s00299-020-02607-y ;  PMID:  32980909

Related News:

Gene Resources:

• NCBI ID: AK100517
• UniProt accessions:

Sequences: