Chromosomal localization of enzyme genes in the AsA-GSH cycle
and nitrogen metabolism in rice and similar genes in other species
The results of chromosome mapping of the enzyme genes in the AsA-GSH
cycle and nitrogen metabolism in rice and similar genes inArabidopsis thaliana , Hordeum vulgare , Zea mays,and Sorghum bicolor are shown in (Figure
1a–e).OsGR3 , OsGPX1 , OsNR2 , OsGS1 , andOsGOGAT1 were found to be unevenly distributed on four rice
chromosomes. In this study, similar genes in Hordeum vulgare ,Zea mays, and Sorghum bicolor were employed as examples,
and the above gene symbols were replaced with the abbreviations of
species Latin names and the first letters of gene names. OsGR3 is
located on chromosome 10, ATGR is located on chromosome 3,HvGR is located on chromosome 4H, and ZmGR and SbGRare located on chromosome 1, with differences found in their
distribution. OsGPX1 is located on
chromosome
4, ATGPX is
located on chromosomes 1 and 4, HvGPX is located on chromosome
2H, ZmGPX is located on chromosomes 2 and 10, SbGPX is
located on chromosomes 4 and 6, and most of the genes are located on
chromosomes 2 and 4. OsNR2 and OsGS1 are located on
chromosome 2; ATNIA is located on chromosome 1; ATGSR andATGLN are located on chromosomes 1, 3, and 5; HvNR andHvGS are located on chromosomes 4H and 6H; ZmNR andZmGS are located on chromosomes 1, 4, and 5; and SbNR andSbGS are located on chromosome 4. The NR and GS genes were found
to be distributed on different chromosomes of rice, Arabidopsis
thaliana , Hordeum vulgare , Zea mays , and Sorghum
bicolor , and located on the same chromosome in the same species.OsGOGAT1 is located on chromosome 1, ATGLT1 is located on
chromosome 5, HvGOGAT is located on chromosome 3H, ZmGOGATis located on chromosomes 3 and 8, SbGOGAT is located on
chromosomes 3 and 9, and most of the genes are located on chromosome 3.