Genome-Wide Identification And Expression Profile Of Ninja And Afp Genes In Rice

NINJA and AFP genes have shown important roles in plants growth and stress tolerance. However, little information is available in rice, whose yield is central to world food security. In this study, a systematic analysis has been conducted in rice. Three AFPs were identified from rice genome on chromosome 3 and chromosome 7, one NINJA was identified on chromosome 5. Phylogenetic trees showed NINJA and AFPs were not the same Glade at all, although they were highly homologous. Domain and motif analysis revealed that C and N termini of OsNINJA and OsAFPs were highly conserved, but the middle region of them was highly variable. OsNINJA and OsAFPs gene structure presented less introns. Gene duplication analysis indicated segmental duplication or whole genome duplication might be the main way of gene expansion. Gene expression pattern suggested that OsNINJA and OsAFPs might play a role in floral organ and root development. Furthermore, Real-time fluorescence quantitative and cis-element analysis implied that they might be involved in various stresses resistance and signaling pathways, like abscisic acid and jasmonic acid. Variation analysis illustrated that obvious indica-japonica differences, namely Single nucleotide polymorphisms and indels, existed in these loci. Our study investigated the characteristics of NINJA and AFPs in rice and predicted their potential functions, which laid foundations for studying their biological functions. (C) 2020 Friends Science Publishers