It ' s essential for plant to control ros concentration within cell and repair the stress damage in time under stress . it has been reported that sos2 mutant shows sensitivity to salt due to reduced activity of na + / h + transporter 已有的研究表明sos2突变体对盐敏感是由于na ~ + h ~ +反向转运器活性降低造成,而活性氧是否也作为它对盐敏感的原因之一还未见报道。