Pityrogramma calomelanos (L.) Link: Silver fern as a copper excluder plant
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In this paper, the Cu accumulation pattern of P. calomelanos was determined by exposing the ferns to different Cu levels (0 to 2500 mg L) in the soil for about three weeks.Abstract:
Silver ferns, Pityrogramma calomelanos, were observed to be growing on soil highly polluted with copper (Cu), which indicated a possible Cu phytoremediation potential. In this study, the Cu accumulation pattern of P. calomelanos was determined by exposing the ferns to different Cu levels (0 to 2500 mg L) in the soil for about 3 weeks. The Cu content of the fronds analysed at 5-days interval showed that P. calomelanos exposed to Cu levels of up to 1000 mg L were able to maintain normal levels of Cu within their fronds throughout the experiment. At high level of 2500 mg L Cu soil content, P. calomelanos exhibited an initial toxicity phase with significantly higher Cu content in their green fronds, but recovery was observed within 10 days and Cu content recovered back to normal level. The bioconcentration factor (BCF) was in the range of 0.005–0.11, where the maximum copper concentration up to 2500 mg kg. The frond’s nitrogen content had showed no significant differences between control and treated plants at the end of the experiment. Hence, the P. calomelanos has been identified as a good Cu excluder species which can potentially be used for phytostabilisation of Cu-polluted soils.read more
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In vitro spore germination and phytoremediation of Hg and Pb using gametophytes of Pityrogramma calomelanos
TL;DR: This study demonstrates the effective use of the promising fern in its simplest, nonvascular form of gametophytes as a phytoremediation agent in controlled conditions and reduces significantly causing developmental defects in the presence of HgCl2.
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Revegetation on Tropical Steep Slopes after Mining and Infrastructure Projects: Challenges and Solutions
Markus Gastauer,Jhonny Capichoni Massante,Silvio Junio Ramos,Rayara do Socorro Souza da Silva,Daniela Boanares,Rafael Silva Guedes,Cecílio Frois Caldeira,P. S. Medeiros-Sarmento,A. D. de Castro,Isabelle Gonçalves de Oliveira Prado,André Luiz de Rezende Cardoso,Clovis Wagner Maurity,Paula Godinho Ribeiro +12 more
TL;DR: In this article , the importance of microorganisms to enhance steep slope revegetation, and the functional plant traits necessary to establish on steep slopes are reviewed, where different plant functional groups show adaptations necessary for establishment in steep slope environments and mixtures of species containing different functional groups can promote diverse and resilient plant communities.
References
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Hyperaccumulators of metal and metalloid trace elements: Facts and fiction
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Copper in plants
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