The nature of arsenicphytochelatin conplexes in Holcus lanatus and Pteris cretica

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Arsenic uptake and metabolism in plants. (2009, background): “In Rauvolfia serpentia cell culture (Schmöger et al., 2000), in Silene vulgaris (Sneller et al., 1999; Schat et al., 2002) and in tolerant populations of H. lanatus (Hartley-Whitaker et al., 2002), the molar ratio of PCs-SH to As is ≥ 3:1.”
Heavy metal hyperaccumulating plants: how and why do they do it? And what makes them so interesting? (2011, background): “The heavy metal detoxification in hyperaccumulators, in conrast with tolerant non-hyperaccumulator plants, does not rely on igh molecular mass ligands, such as phytochelatins [111,112], ikely because of the excessive sulphur amounts and the prohibitive etabolic cost that a massive synthesis of this ”
Metallophytes—a view from the rhizosphere (2010, background): “This has been suggested for thiol reductants in the As-hyperaccumualtor Pteris vittata (Webb et al. 2003), although the amount of As complexed in this manner is small (Zhao et al. 2003; Raab et al. 2004).”