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2006•Zhongguo shengwu gongcheng zazhiRequires access

Na~+/H~+Antiporter and Its Relationship with Plant Salt Tolerance

Shou‐Yi Chen

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Abstract

Na+/H+antiporter plays an important role in plant salt toletance. There are two types of Na+/H+antiporter in plant. One is the SOS1, which localizes in plasma menbrance, the other is AtNHX1, which localized in tonoplast. The plasma menbrance Na+/H+antiporter is responsible for the transport of Na+ out of the cell, while the tonoplast Na+/H+antiporter is responsible for the transportion of Na+ from cytoplasm into vacuole. Therefore, these two types of antiporters were considered as key proteins for plant salt tolerance. Recently, many evidences have shown that overexpression of a plasma menbrance Na+/H+antiporter SOS1 and a tonoplast Na+/H+antiporter AtNHX1 can increase salt tolerance of plants. The latest progress in the study of Na+/H+antiporter and its relationship with plant salt tolerance were reviewed.

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What this paper is about

Na+/H+antiporter plays an important role in plant salt toletance. There are two types of Na+/H+antiporter in plant. One is the SOS1, which localizes in plasma menbrance, the other is AtNHX1, which localized in tonoplast. The plasma menbrance Na+/H+antiporter is responsible for the transport of Na+ out of the cell, while the tonoplast Na+/H+antiporter is responsible for the transportion of Na+ from cytoplasm into vacuole. Therefore, these two types of antiporters were considered as key proteins for plant salt tolerance. Recently, many evidences have shown that overexpression of a plasma menbrance Na+/H+antiporter SOS1 and a tonoplast Na+/H+antiporter AtNHX1 can increase salt tolerance of plants. The latest progress in the study of Na+/H+antiporter and its relationship with plant salt tolerance were reviewed.

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Available abstract

Na+/H+antiporter plays an important role in plant salt toletance. There are two types of Na+/H+antiporter in plant. One is the SOS1, which localizes in plasma menbrance, the other is AtNHX1, which localized in tonoplast. The plasma menbrance Na+/H+antiporter is responsible for the transport of Na+ out of the cell, while the tonoplast Na+/H+antiporter is responsible for the transportion of Na+ from cytoplasm into vacuole. Therefore, these two types of antiporters were considered as key proteins for plant salt tolerance. Recently, many evidences have shown that overexpression of a plasma menbrance Na+/H+antiporter SOS1 and a tonoplast Na+/H+antiporter AtNHX1 can increase salt tolerance of plants. The latest progress in the study of Na+/H+antiporter and its relationship with plant salt tolerance were reviewed.

Key concepts: Antiporter, Vacuole, Sodium–hydrogen antiporter, Antiporters, Salt (chemistry), Cytoplasm, Chemistry, Sodium

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