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A and B, Quinoa, a facultative C3 halophytic plant capable of producing grain even when irrigated with high (seawater) levels of salinity. C and D, To a large extent, the remarkable salinity tolerance of quinoa plants is attributed to salt bladders (EBC) located at both the adaxial and abaxial leaf surfaces. Salt bladder density, however, is very different between young (C) and old (D) leaves. [See online article for color version of this figure.]
