TY - JOUR
T1 - Too much is bad—an appraisal of phytotoxicity of elevated plant-beneficial heavy metal ions
AU - Anjum, Naser A.
AU - Singh, Harminder P.
AU - Khan, M. Iqbal R.
AU - Masood, Asim
AU - Per, Tasir S.
AU - Negi, Asha
AU - Batish, Daizy R.
AU - Khan, Nafees A.
AU - Duarte, Armando C.
AU - Pereira, Eduarda
AU - Ahmad, Iqbal
N1 - Funding Information:
Partial financial support received from the Portuguese Foundation for Science and Technology (FCT) through post-doctoral research grants to NAA (SFRH/BPD/64690/2009; SFRH/BPD/84671/2012), European Funds through COMPETE (project no. FCOMP-01-0124-FEDER-014149; FCT PTDC/AGR-PRO/114956/2009), National Funds through FCT within project PEst-C/MAR/LA0017/2013, and the Aveiro University Research Institute/Centre for Environmental and Marine Studies (CESAM) is gratefully acknowledged. HPS, AN, DRB, MIRK, TSP, and NAK are grateful to the University Grants Commission (UGC) and Department of Biotechnology (DBT), New Delhi (India), for partial financial support.
Publisher Copyright:
© 2014, Springer-Verlag Berlin Heidelberg.
PY - 2015/3
Y1 - 2015/3
N2 - Heavy metal ions such as cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn) are considered essential/beneficial for optimal plant growth, development, and productivity. However, these ions readily impact functions of many enzymes and proteins, halt metabolism, and exhibit phytotoxicity at supra-optimum supply. Nevertheless, the concentrations of these heavy metal ions are increasing in agricultural soils worldwide via both natural and anthropogenic sources that need immediate attention. Considering recent breakthroughs on Co, Cu, Fe, Mn, Mo, Ni, and Zn in soil–plant system, the present paper: (a) overviews the status in soils and their uptake, transport, and significance in plants; (b) critically discusses their elevated level-mediated toxicity to both plant growth/development and cell/genome; (c) briefly cross talks on the significance of potential interactions between previous plant-beneficial heavy metal ions in plants; and (d) highlights so far unexplored aspects in the current context.
AB - Heavy metal ions such as cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn) are considered essential/beneficial for optimal plant growth, development, and productivity. However, these ions readily impact functions of many enzymes and proteins, halt metabolism, and exhibit phytotoxicity at supra-optimum supply. Nevertheless, the concentrations of these heavy metal ions are increasing in agricultural soils worldwide via both natural and anthropogenic sources that need immediate attention. Considering recent breakthroughs on Co, Cu, Fe, Mn, Mo, Ni, and Zn in soil–plant system, the present paper: (a) overviews the status in soils and their uptake, transport, and significance in plants; (b) critically discusses their elevated level-mediated toxicity to both plant growth/development and cell/genome; (c) briefly cross talks on the significance of potential interactions between previous plant-beneficial heavy metal ions in plants; and (d) highlights so far unexplored aspects in the current context.
KW - Cyto/genotoxicity
KW - Essential heavy metal ions
KW - Phytotoxicity
KW - Plant growth and metabolism
UR - https://www.scopus.com/pages/publications/84924095522
U2 - 10.1007/s11356-014-3849-9
DO - 10.1007/s11356-014-3849-9
M3 - Article
C2 - 25408077
AN - SCOPUS:84924095522
SN - 0944-1344
VL - 22
SP - 3361
EP - 3382
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 5
ER -