Iqbal MP (2012) Lead pollution: a risk factor for cardiovascular disease in Asian developing
countries. Pak J Pharm Sci 25:289–294
Kao PH, Huang CC, Hseu ZY (2006) Response of microbial activities to heavy metals in a neutral
loamy soil treated with biosolid. Chemosphere 64:63–70
Kaur N, Sharma S, Kaur S (2014) Selenium in agriculture: a nutrient or contaminant for crops.
Arch. Aron Soil Sci 60:1593–1624
Khan AG (2006) Role of soil microbes in the rhizospheres of plants growing on trace metal
contaminated soils in phytoremediation. J Trace Elem Med Biol 18:355–364
Kim KR, Owens G (2010) Potential for enhanced phytoremediation of landfills using biosolids: a
review. J Environ Manag 91:791
Kim S, Lim H, Lee I (2010) Enhanced heavy metal phytoextraction by Echinochloa crus-galli using
root exudates. J Biosci Bioeng 109:47–50
Kuiper I, Bloemberg GV, Lugtenberg BJJ (2001) Selection of a plant-bacterium pair as a novel tool
for rhizostimulation of polycyclic aromatic hydrocarbon-degrading bacteria. Mol Plant-Microbe
Interact 14:1197–1205
Kumar PBAN, Dushenkov V, Motto H, Raskin I (1995) Phytoextraction: the use of plants to
remove heavy metals from soils. Environ Sci Technol 29:1232–1238
Lamoureux GL, Rusness DG (1986) Xenobiotic conjugation in higher plants. In: Paulson GD,
Caldwell J, Hutson DH, Menn JJ (eds) Xenobiotic conjugation chemistry, ACS Symposium
Series 299. American Chemical Society, Washington, DC, pp 62–105
Lasat MM, Baker AJM, Kochian LV (1996) Physiological characterization of root Zn
2+ absorption
and translocation to shoots in Zn hyperaccumulator and nonaccumulator species of Thlaspi.
Plant Physiol 112:1715–1722
Lena QM, Rao GN (1997) Heavy metals in the environment. J Environ Qual 26:264
Li T, Tao Q, Liang C, Shohag MJ, Yang X, Sparks DL (2013) Complexation with dissolved organic
matter and mobility control of heavy metals in the rhizosphere of hyperaccumulator Sedum
alfredii. Environ Pollut 182:248–255
Lin Y, Weng C, Lee S (2012) Spatial distribution of heavy metals in contaminated agricultural soils
exemplified by Cr, Cu, and Zn. J Environ Eng 138:299–306. Special issue: advances in research
and development of sustainable environmental technologies
Liu XM, Wu QT, Banks MK (2005) Effect of simultaneous establishment of Sedum alfridii and Zea
mays on heavy metal accumulation in plants. Int J Phytoremediation 7:43–53
Lu L, Tian S, Yang X, Li T, He Z (2009) Cadmium uptake and xylem loading are active processes
in the hyperaccumulator Sedum alfredii. J Plant Physiol 166:579–587
Luo Q, Sun L, Hu X, Zhou R (2014) The variation of root exudates from the hyperaccumulator
Sedum alfredii under cadmium stress: metabonomics analysis. PLoS One 9:e115581. https://
doi.org/10.1371/journal.pone.01 15581
Ma LQ, Komar KM, Tu C, Zhang W, Cai Y, Kennelley ED (2001) A fern that hyperaccumulates
arsenic. Nature 409:579
Macek T, Macková M, Kas J (2000) Exploitation of plants for the removal of organics in
environmental remediation. Biotechnol Adv 18:23–34
Magdziak Z, Kozlowska M, Kaczmarek Z, Mleczek M, Chadzinikolau T, Drzewiecka K, Golinski
P (2011) Influence of Ca/Mg ratio on phytoextraction properties of Salix viminalis. II. Secretion
of low molecular weight organic acids to the rhizosphere. Ecotoxicol Environ Saf 74:33–40
Mahar A, Wang P, Ali A, Awasthi MK, Lahori AH, Wang Q, Li RH, Zhang ZQ (2016) Challenges
and opportunities in the phytoremediation of heavy metals contaminated soils: a review.
Ecotoxicol Environ Saf 126:111–121
Maiti IB, Wagner GJ, Hunt AG (1991) Light inducible and tissue specific expression of a chimeric
mouse metallothionein cDNA gene in tobacco. Plant Sci 76:99–107
McGrath SP, Chaudri AM, Giller KE (1995) Long-term effects of metals in sewage sludge on soils,
microorganisms and plants. J Ind Microbiol 14:94–104
110
M. K. Awasthi et al.
countries. Pak J Pharm Sci 25:289–294
Kao PH, Huang CC, Hseu ZY (2006) Response of microbial activities to heavy metals in a neutral
loamy soil treated with biosolid. Chemosphere 64:63–70
Kaur N, Sharma S, Kaur S (2014) Selenium in agriculture: a nutrient or contaminant for crops.
Arch. Aron Soil Sci 60:1593–1624
Khan AG (2006) Role of soil microbes in the rhizospheres of plants growing on trace metal
contaminated soils in phytoremediation. J Trace Elem Med Biol 18:355–364
Kim KR, Owens G (2010) Potential for enhanced phytoremediation of landfills using biosolids: a
review. J Environ Manag 91:791
Kim S, Lim H, Lee I (2010) Enhanced heavy metal phytoextraction by Echinochloa crus-galli using
root exudates. J Biosci Bioeng 109:47–50
Kuiper I, Bloemberg GV, Lugtenberg BJJ (2001) Selection of a plant-bacterium pair as a novel tool
for rhizostimulation of polycyclic aromatic hydrocarbon-degrading bacteria. Mol Plant-Microbe
Interact 14:1197–1205
Kumar PBAN, Dushenkov V, Motto H, Raskin I (1995) Phytoextraction: the use of plants to
remove heavy metals from soils. Environ Sci Technol 29:1232–1238
Lamoureux GL, Rusness DG (1986) Xenobiotic conjugation in higher plants. In: Paulson GD,
Caldwell J, Hutson DH, Menn JJ (eds) Xenobiotic conjugation chemistry, ACS Symposium
Series 299. American Chemical Society, Washington, DC, pp 62–105
Lasat MM, Baker AJM, Kochian LV (1996) Physiological characterization of root Zn
2+ absorption
and translocation to shoots in Zn hyperaccumulator and nonaccumulator species of Thlaspi.
Plant Physiol 112:1715–1722
Lena QM, Rao GN (1997) Heavy metals in the environment. J Environ Qual 26:264
Li T, Tao Q, Liang C, Shohag MJ, Yang X, Sparks DL (2013) Complexation with dissolved organic
matter and mobility control of heavy metals in the rhizosphere of hyperaccumulator Sedum
alfredii. Environ Pollut 182:248–255
Lin Y, Weng C, Lee S (2012) Spatial distribution of heavy metals in contaminated agricultural soils
exemplified by Cr, Cu, and Zn. J Environ Eng 138:299–306. Special issue: advances in research
and development of sustainable environmental technologies
Liu XM, Wu QT, Banks MK (2005) Effect of simultaneous establishment of Sedum alfridii and Zea
mays on heavy metal accumulation in plants. Int J Phytoremediation 7:43–53
Lu L, Tian S, Yang X, Li T, He Z (2009) Cadmium uptake and xylem loading are active processes
in the hyperaccumulator Sedum alfredii. J Plant Physiol 166:579–587
Luo Q, Sun L, Hu X, Zhou R (2014) The variation of root exudates from the hyperaccumulator
Sedum alfredii under cadmium stress: metabonomics analysis. PLoS One 9:e115581. https://
doi.org/10.1371/journal.pone.01 15581
Ma LQ, Komar KM, Tu C, Zhang W, Cai Y, Kennelley ED (2001) A fern that hyperaccumulates
arsenic. Nature 409:579
Macek T, Macková M, Kas J (2000) Exploitation of plants for the removal of organics in
environmental remediation. Biotechnol Adv 18:23–34
Magdziak Z, Kozlowska M, Kaczmarek Z, Mleczek M, Chadzinikolau T, Drzewiecka K, Golinski
P (2011) Influence of Ca/Mg ratio on phytoextraction properties of Salix viminalis. II. Secretion
of low molecular weight organic acids to the rhizosphere. Ecotoxicol Environ Saf 74:33–40
Mahar A, Wang P, Ali A, Awasthi MK, Lahori AH, Wang Q, Li RH, Zhang ZQ (2016) Challenges
and opportunities in the phytoremediation of heavy metals contaminated soils: a review.
Ecotoxicol Environ Saf 126:111–121
Maiti IB, Wagner GJ, Hunt AG (1991) Light inducible and tissue specific expression of a chimeric
mouse metallothionein cDNA gene in tobacco. Plant Sci 76:99–107
McGrath SP, Chaudri AM, Giller KE (1995) Long-term effects of metals in sewage sludge on soils,
microorganisms and plants. J Ind Microbiol 14:94–104
110
M. K. Awasthi et al.