J Integr Plant Biol. ›› 2005, Vol. 47 ›› Issue (3): -.DOI: 10.1111/j.1744-7909.2005.00057.x

• Research Articles •    

Two Na+ and Cl– Hyperaccumulators of the Chenopodiaceae

Ke-Fu ZHAO, Hai FAN, Jie SONG, Ming-Xia SUN, Bao-Zeng WANG, Sheng-Qiang ZHANG,I. A. UNGAR   

Abstract: The authors found five sodium (Na+) and chloride (Cl-) hyperaccumulating halophytes in the Temperate Desert of Xinjiang, China and studied two of them (Suaeda salsa (L.) Pall. and Kalidium folium (Pall.) Moq.). K. folium and S. salsa had a NaCl content of 32.1% and 29.8%, respectively, on a dry weight basis. X-ray microanalysis of the Na+ in the vacuole, apoplasts and cytoplasm of the two plants indicated a ratio of 7.3:5.6:1.0 in K. folium and 7.3:6.6:1.0 in S. salsa. These data show that K. folium and S. salsa both have a high Na+ and Cl-accumulating capacity, which is related to high activity of tonoplast H+-ATPase and H+-PPase.

Key words: apoplast, Cl–, cytoplasm, hyperaccumulator, Kalidium folium (Pall.) Moq., Na+, Suaeda salsa (L.) Pall., vacuole.

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