PRIMARY ANALYSIS OF THE FUNCTION OF Nodulin MtN21 GENE At1 g09380 IN Arabidopsis thaliana

Nodulin MtN21 protein family contains one to two DUF6 domain signature characteristics of integral membrane proteins.The protein family is predicted to play very important roles in transport of micromolecule transmembrane,signal transduction and stress-resistance.At1 g09380 is a member of Nodulin MtN21 gene family.One homozygous T-DNA mutant was identified by PCR and RT-PCR as null mutant.The phenotype of the mutants which were observed at the stages of germination and postgermination showed that At1 g09380 mutants were sensitive to NaCl and drought suggested that the gene might participate in salt and drought stressresistance process in Arobidopsis.Meanwhile we found that the mutants were 7 days earlier than wild type in flowering time.The results are the bases of the biology function of At1g09380 for the further research.