Heavy Metal(loid)s Accumulation of Pteris vittata L. Populations and Their Association with Soil Edaphic Factor

Sammanfattning

Pteris vittata L. is a well-known As-hyperaccumulator that can accumulate more than 1000 mu g g(-1) ofAs. Research on the effect of edaphic influences on the heavy metal(loid)s (HMs) accumulation of P. vittata is unknown and less reported. The heavy metal uptake in plants may be influenced by exogenous factors of soil, such as pH, electrical conductivity (EC), cation exchange capacity (CEC), etc. This study aims to investigate the association between the heavy metal(loid)s' accumulation of wild P. vittata populations with the soil physicochemical properties. The samples offronds were collected randomly from five different habitats and oven-dried; meanwhile, soil samples were air-dried and processed before undergoing further digestion analyses. The N concentrations was analysed using the Kjedahl method while P, K, Ca, Mg, As, Cd, Pb and Cr were analysed using ICP-OES. Soil analyses also involved nutrients and heavy metals analysis with the physicochemical (pH, CEC, EC and soil texture). The results showed that the highest HMs accumulation of P. vittata was As with 1380 + 140 mg kg(-1), Cd at 41.9 + 4.19 mg kg(-1), Pb at 7.57 + 3.68 mg kg(-1 )and Cr at 3.33 + 0.57 mg kg(-1). Among the HMs observed, only Pb had significant differences among P. vittata populations (p<0.05) while other HMs (As, Cd, Cr) were insignificant (p>0.05). Based on the Pearson correlation coefficient (r), there was a negative correlation offoliar As and foliar Cd with soil Cd (p<0.05). However, there was no correlation between the foliar HMs with other soil physicochemical properties (p>0.05). We conclude that wild P. vittata can absorb high concentrations ofAs but this uptake was uncoupled with the high concentrations of HMs in the soil. Further research is required to investigate the potential of HMs accumulation in P. vittata and the effect of HMs applications on the growth and physiology of P. vittata under controlled environments.

Nyckelord

Arsenic hyperaccumulator; heavy metal(loid)s; soil physicochemical; Pteris vittata

Publicerad i

Malaysian Journal Of Soil Science
2025, volym: 29
Utgivare: MALAYSIAN SOC SOIL SCIENCE

SLU författare

• Yong, Jean W.H

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Markvetenskap

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/145722