Molecular cloning and characterization of a vacuolar Na+/H+ antiporter gene from the succulent xerophyte Zygophyllum xanthoxylum
Salinity is an environment factor that adversely affects plant growth and development.High salinity causes osmotic and oxidative stresses,and the damage in ion homeostasis.To cope with salt stress, plants have developed a variety of adaptation mechanisms.One of them is to compartmentalize Na＋into the vacuole through the operation of a vacuolar Na+/H+ antiporter (NHX) ( Apse et al.,1999).So far, N H X genes have been isolated from the glycophytes, such as At N H X l in A rabidopsis thaliana,Os N H X l in rice and Gh N H X l in cotton, and the halophytes, such as Ss N H X in Suaeda salsa and Ss N X l in Salicornia europaea.However,N H X genes from the xerophytes have been not reported.In this study, a homologous gene (Zx N H X) of vacuolar Na+/H+ antiporter was cloned and characterized from a typically succulent xerophyte, Zygophyllum xanthoxylum.
Xerophyte vacuolar Na＋ / H＋ antiporter Zx N H X
Guo-Qiang Wu Jie-Jun Xi Ai-Ke Bao Suo-Min Wang
Key Laboratory of Grassland Agro-ecosystem,Ministry of Agriculture,School of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730000,Peoples Republic of China
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）