Histidine promotes the loading of nickel and zinc, but not of cadmium, into the xylem in Noccaea caerulescens

• Published in: Plant signaling & behavior Vol. 9; no. 9; p. e29580
• Main Authors: Kozhevnikova, Anna D, Seregin, Ilya V, Verweij, Rudo, Schat, Henk
• Format: Journal Article
• Language: English
• Published: United States Taylor & Francis 01.09.2014
• Subjects: cadmium; histidine; hyperaccumulation; Noccaea caerulescens; xylem loading; cadmium; Noccaea caerulescens; hyperaccumulation; histidine; xylem loading

Histidine is known to be involved in Ni hyperaccumulation. Recently, histidine-dependent xylem loading of Ni and Zn has been demonstrated in the Zn/Ni/Cd hyperaccumulator, Noccaea caerulescens. Here we tested the hypothesis whether Cd xylem loading is histidine-dependent, too. In contrast to that of...