Abstract
Many metal hyperaccumulating plants have to tolerate abiotic stresses in their native soils such as high metal concentrations, low nutrient status and drought. This paper tests the ability of the Ni-hyperaccumulator Alyssum murale and two races of the Zn-hyperaccumulator Thlaspi caerulescens (Prayon and Close House) to tolerate salinity. The plants were exposed to salt (NaCl) solutions ranging between 0 mM and 100 mM in conjunction with either high or low concentrations of Ni or Zn. Alyssum murale was most resistant to salt in terms of seedling emergence and survival of emerged seedlings. The two races of T. caerulescensand T. arvense were salt sensitive. High Ni or Zn concentrations did not have a clear effect on the salt tolerance of any of the plants tested. The implications of the findings are discussed for the development of metal phytoremediation/phytomining technologies on saline soils or where brackish water (e.g., mining wastewater) could be used to irrigate phytoremediation ‘crops’.
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Comino, E., Whiting, S.N., Neumann, P.M. et al. Salt (NaCl) tolerance in the Ni hyperaccumulator Alyssum murale and the Zn hyperaccumulator Thlaspi caerulescens. Plant Soil 270, 91–99 (2005). https://doi.org/10.1007/s11104-004-1233-0
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DOI: https://doi.org/10.1007/s11104-004-1233-0