Lead toxicity induced phytotoxic effects on mung bean can be relegated by lead tolerant Bacillus subtilis (PbRB3)
Arif, Muhammad Saleem1; Yasmeen, Tahira1; Shahzad, Sher Muhammad2; Riaz, Muhammad1; Rizwan, Muhammad1; Iqbal, Shahid3; Asif, Muntaha1; Soliman, Mona H.4,5; Ali, Shafaqat1
Corresponding AuthorYasmeen, Tahira(rida_akash@hotmail.com)
2019-11-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume234Pages:70-80
AbstractBeing a primary toxic heavy metal, lead (Pb) contamination presents an imposing environmental and public health concern worldwide. A Bacillus subtilis PbRB3, displaying higher Pb tolerance, was isolated from the textile effluent. The bacterial culture was able to remove >80% of Pb from culture solution. Upon screening in the presence of Pb, PbRB3 strain exhibited significant plant growth promoting potential. A 3 weeks long pot experiment was established to examine the capability of PbRB3 strain for physiological and biochemical traits, and Pb accumulation tendency of mung bean at 250 and 500 mg kg(-1) of Pb toxicity, respectively. With respect to control treatments, photosynthetic pigments, protein synthesis, net assimilation rate, transpiration rate and stomatal conductance were significantly constrained by Pb toxicity levels. Intrinsic and instantaneous water use efficiencies were considerably improved in inoculated plants under Pb toxicity. Compared to inoculated control, significantly higher superoxide dismutase activity in both Pb toxicity treatments, while higher malondialdehyde contents only at Pb500 treatment was recorded with PbRB3 inoculation. Catalase activity between Pb250 and Pb500 treatments was comparable at both inoculation level. Moreover, PbRB3 inoculation led to significantly higher peroxidase activity under Pb toxicity treatments compared to inoculated control. The PbRB3 inoculation led to comparable differences in root Pb content between Pb250 and Pb500 treatments. These results suggest that inoculation of Pb tolerant, Bacillus subtilis PbRB3, could be employed to improve mung bean growth potential and adaptation against Pb toxicity, and thereby accelerated Pb rhizoaccumulation from metal contaminated environment. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordMetal contamination Legume Oxidative stress Biosorption Microbial inoculant
DOI10.1016/j.chemosphere.2019.06.024
Indexed BySCI ; SCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000488136200008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/69887
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Corresponding AuthorYasmeen, Tahira
Affiliation1.Govt Coll Univ Faisalabad, Dept Environm Sci & Engn, Allama Iqbal Rd, Faisalabad 38000, Pakistan
2.Univ Sargodha, Univ Coll Agr, Dept Soil & Environm Sci, Sargodha, Pakistan
3.Chinese Acad Sci, Key Lab Econ Plants & Biotechnol, East & Cent Asia Reg Off,Kunming Inst Bot, Ctr Mt Futures CMF,World Agroforestry Ctr ICRAF, Kunming 650201, Yunnan, Peoples R China
4.Taibah Univ, Fac Sci, Biol Dept, Al Sharm 46429, Yanbu El Bahr, Saudi Arabia
5.Cairo Univ, Fac Sci, Dept Bot & Microbiol, Giza 12613, Egypt
Recommended Citation
GB/T 7714
Arif, Muhammad Saleem,Yasmeen, Tahira,Shahzad, Sher Muhammad,et al. Lead toxicity induced phytotoxic effects on mung bean can be relegated by lead tolerant Bacillus subtilis (PbRB3)[J]. CHEMOSPHERE,2019,234:70-80.
APA Arif, Muhammad Saleem.,Yasmeen, Tahira.,Shahzad, Sher Muhammad.,Riaz, Muhammad.,Rizwan, Muhammad.,...&Ali, Shafaqat.(2019).Lead toxicity induced phytotoxic effects on mung bean can be relegated by lead tolerant Bacillus subtilis (PbRB3).CHEMOSPHERE,234,70-80.
MLA Arif, Muhammad Saleem,et al."Lead toxicity induced phytotoxic effects on mung bean can be relegated by lead tolerant Bacillus subtilis (PbRB3)".CHEMOSPHERE 234(2019):70-80.
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