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.