Uptake and accumulation of phosphorus by dominant plant species growing in a phosphorus mining area

This study was carried out in order to determine the chemical composition and accumulation potential of invasive alien knotweed Reynoutria 9 bohemica from five habitats exposed to different levels of anthropogenic pollution. To estimate the potential for trace element accumulation, accumulation and translocation factors were used, as well as Spearman's rank correlation coefficients. The concentrations of major and trace elements (N, P, K, Ca, Mg, S, Fe, Al, Mn, Ni, Zn, Cu, Cr, Co, Cd, Pb, V) in soil samples and plant tissues (roots, stems, leaves) are presented. The results indicate that Reynoutria 9 bohemica accumulates macronutrients very effectively. In regard to accumulation of heavy metals, increased values were recorded for Fe, Ni, Cr and Co. Weak heavy metal accumulation accompanied by exclusion seems to be the survival and expansion strategy of Reynoutria 9 bohemica.

Section: Heavy Metal Accumulationcontrasting

confidence: 98%

Heavy metal accumulation in invasive Reynoutria × bohemica Chrtek & Chrtková in polluted areas

Širka

Jakovljević

Mihailović³

et al. 2016

“…concentrations of lead in plants and soils on different plant species were analyzed using one-way ANOVA followed by the LSD in SPSS statistical software package (Version 11.0) (Deng et al 2007;Xiao et al 2009). …”

Section: Translocation Factormentioning

confidence: 99%

Lead accumulation and phytostabilization potential of dominant plant species growing in a lead–zinc mine tailing

Zou

Zhang

et al. 2011

Self Cite

Screening out plants that are hyper-tolerant to certain heavy metals plays a fundamental role in remediation of mine tailing. In this study, nine dominant plant species growing on lead-zinc mine tailing and their corresponding non-mining ecotypes were investigated for their potential phytostabilization of lead. Lead concentration in roots of these plants was higher than in shoots, and the highest concentrations of lead were found in Athyrium wardii: 15542 and 10720 mg kg -1 in the early growth stage (May) and vigorous growth stage (August) respectively, which were 426 and 455 times higher than those of the non-mining ecotypes. Because of poor lead translocation ability, lead accumulation in roots reached as high as 42 mg per plant. Available lead in the rhizosphere soils of A. wardii was 310 mg kg -1 , which was 17 times higher than that of the non-rhizosphere soil. Lead concentrations of roots for the nine mining ecotypes were positively correlated with available lead in the rhizosphere soils, whereas a negative correlation was observed in the non-mining ecotypes. These results suggest that A. wardii was the most promising candidate among the tested species for lead accumulation in roots, and it could be used for phytostabilization in lead polluted soils.

“…3; Table 3). Some invasive plants and forbs with extremely high L P content, e.g., P. hydropiper, E. fangii, and E. acer, were previously found by Xiao et al (2009) in another GPES region in southwest China. L N: P was significantly higher in trees and shrubs than in forbs at our study site, consistent with higher L N:P in longlived, slow-growing species than in short-lived, fastgrowing species, as previously identified (Güsewell 2004).…”

Section: Discussionmentioning

confidence: 67%

“…Central Yunnan in China is a typical representative GPES region. Previous studies of L P in GPES found conflicting results, with some studies finding forbs with high L P contents in GPES regions (Xiao et al 2009;Yan et al 2011). Other studies found that some plants resisted accumulating high P in leaves, because high internal P concentrations could cause symptoms of P toxicity (Hawkins et al 2008;Silber et al 2002).…”

Section: Introductionmentioning

confidence: 94%

Leaf nitrogen and phosphorus stoichiometry of plant communities in geochemically phosphorus-enriched soils in a subtropical mountainous region, SW China

Yan

Duan

et al. 2015

Leaf nitrogen (N) and phosphorus (P) stoichiometry might reflect the biogeochemical features of ecosystems, yet the potential range of stoichiometric flexibility under geochemically P-enriched soils (GPES) is still unclear. Leaf N and P of 126 plant species in 70 vegetation plots in GPES were investigated in central Yunnan, southwestern China, and leaf P fractions (i.e., inorganic vs. organic P) of the dominant species were examined. Our objectives were to improve the understanding of the role of soil N and P variability in controlling leaf N and P stoichiometry of plant communities in GPES. We found that plants in GPES had higher mean leaf P (4.07 mg/g) and lower N:P ratios (4.94) than average plant values that have been recorded in other parts of the world so far. Some fastgrowing plants had extremely high leaf P ([10 mg/g).Community leaf N and P contents increased as soil N availability increased, but soil N variability was unrelated to community leaf N:P. Instead, community leaf P and N:P ratios were primarily determined by soil P; as soil P availability increased, leaf P increased and leaf N:P significantly decreased. Greater accumulation of inorganic P relative to organic P in leaf was the direct driving factor for community leaf P and N:P ratio patterns in GPES. Although soil P availability was the main controlling factor of leaf N:P patterns, community composition could be manipulated to restore the balance of N and P stoichiometry based on the different responses across species and plant types.