Heavy metal tolerance strategies in metallicolous and non-metallicolous populations of mosses: insights of ?+?-tocopherol regulatory role

As bryophytes present the capacity to colonize a wide range of habitats, including extreme environments (e.g., mine areas), we first checked global response heavy metals (HM) by systematic review. This analysis found i) lack studies in polluted environment and ii) resulted trend photochemical efficiency decrease when faced metals. Secondly, characterized photoprotective responses four metallicolous populations mosses ( Lewinskya rupestris , Polytrichum commune Ptychostomum compactum Rhynchostegium confertum ) naturally growing an abandoned area experimental field approach. result, markedly species-specific tolerance patterns: i less tolerant species, presenting high pollutants content accompanied marked dissipative antioxidative strategies. strategy was depicted species R. that result be good sentinel due pollutant physiological sensitivity.; ii intermediate medium mechanisms, iii most minimizing consequently no changes their performance. evidence support species’ bryological attributes have key role determining towards environmental metals, should taken into consideration future studies. The findings this study also pointed out higher levels ? + ?-tocopherol could play regulatory metal stress it suitable functional responsive trait for prediction environments. • Bryophytes' adaptive mechanisms metalliferous are poorly studied. Photoprotective strategies species' content. Changes compounds mark bryophytes’ Increasing is copying with