Avtor/Urednik		Vogel-Mikuš, Katarina; Pongrac, Paula; Kump, Peter; Nečemer, Marijan; Regvar, Marjana
Naslov		Colonisation of a Zn, Cd and Pb hyperaccumulator Thlaspi praecox Wulfen with indigenous arbuscular mycorrhizal fungal mixture induces changes in heavy metal and nutrient uptake
Tip		članek
Vir		Environ Pollut
Vol. in št.		Letnik 139
Leto izdaje		2005
Obseg		str. 362-71
Jezik		eng
Abstrakt		Plants of the Zn, Cd and Pb hyperaccumulator Thlaspi praecox Wulfen (Brassicaceae) inoculated or not with indigenous arbuscular mycorrhizal (AM) fungal mixture were grown in a highly Cd, Zn and Pb contaminated substrate in order to evaluate the functionality of symbiosis and assess the possible import of AM colonisation on heavy metal uptake and tolerance. The results suggest AM development in the metal hyperaccumulating T. praecox is favoured at elevated nutrient demands, e.g. during the reproductive period. AM colonisation parameters positively correlated with total soil Cd and Pb. Colonised plants showed significantly improved nutrient and a decreased Cd and Zn uptake as revealed by TRXRF, thus confirming the functionality of the symbiosis. Reduced heavy metal uptake, especially at higher soil metal contents, indicates a changed metal tolerance strategy in colonised T. praecox plants. This is to our knowledge the first report on AV colonisation of the Zn, Cd and Pb hyperaccumulator T. praecox in a greenhouse experiment.
Deskriptorji		PLANTS SYMBIOSIS FUNGI CADMIUM LEAD ZINC SOIL POLLUTANTS