Ecology of bacterial endophytes associated with wetland plants growing in textile effluent for pollutant-degradation and plant growth-promotion potentials

Shehzadi, M.; Fatima, Kaneez; Imran, Asma; Mirza, Muhammad Nadeem; Khan, Qaiser M.; Afzal, Muhammad

doi:10.1080/11263504.2015.1022238

Cited by 62 publications

(35 citation statements)

References 47 publications

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“…In any type of phytoremediating plant, the contaminant-degrading endophytic bacteria present around/inside the host plant are selectively enriched by plants themselves McGuinness and Dowling 2009;Siciliano et al 2001;Shehzadi et al 2015). Once hosts have harbored bacterial endophytes, they develop novel phytoremediation tendencies against a wide range of organic pollutants as well as improved Hart et al (2001) phytoextraction of metals thus exhibiting promising potential against both mixed and single contaminations (Khan et al 2013b;Soleimani et al 2011).…”

Section: Plant-endophyte Partnership In Phytoremediationmentioning

confidence: 99%

Phytoremediation: recent advances in plant-endophytic synergistic interactions

et al. 2015

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Background Plant-endophyte partnership provides an excellent gateway toward restoration of contaminated ecosystems. The interactions between both partners can be manipulated by introducing novel catabolic/ metabolic genes into host plant or endophytic bacteria genomes. The potential of the engineered organisms to degrade or accumulate contaminants is much wider than their wild relatives. Scope This review covers the recent developments for engineering catabolic/metabolic genes from a wide range of sources into plants or endophytic bacteria for the development of modified plant-endophyte interactions. Genetic alteration of plants promises enhanced catabolism by plant's own enzymatic machinery or greater contaminant uptake/accumulation for subsequent in planta detoxification by complementary endophytes. On the other hand, bacteria may also be engineered to enhance the potential for degradation or alteration of catabolic pathways, either to protect the host plant against phytotoxicity or to improve the overall efficiency of phytoremediation in planta, a situation especially suitable when hydrophilic compounds fail to be degraded by rhizospheric microbes due to the rapid uptake by plants. This is followed by discussion on kinetic parameters controlling phytoremediation. Conclusions It is hypothesized that transgenic approach can result in synergistic and effective plant-endophyte partnerships for wider-range and enhanced capabilities of degrading and/or detoxifying contaminants.

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Section: Plant-endophyte Partnership In Phytoremediationmentioning

confidence: 99%

Phytoremediation: recent advances in plant-endophytic synergistic interactions

et al. 2015

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“…The bacteria also improve plant growth due to their plant growth-promoting activities such as siderophore and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase production and nitrogen fixation. Moreover, the bacteria reduce the toxicity and evapotranspiration of the pollutants in the environment (Afzal et al 2014a;Khan et al 2013a;Shehzadi et al 2015;Vangronsveld et al 2009;Weyens et al 2009b;Yousaf et al 2014). …”

Section: Introductionmentioning

confidence: 98%

Plant–bacteria partnerships for the remediation of persistent organic pollutants

Arslan

Imran

Khan

et al. 2015

Environ Sci Pollut Res

176

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High toxicity, bioaccumulation factor and widespread dispersal of persistent organic pollutants (POPs) cause environmental and human health hazards. The combined use of plants and bacteria is a promising approach for the remediation of soil and water contaminated with POPs. Plants provide residency and nutrients to their associated rhizosphere and endophytic bacteria. In return, the bacteria support plant growth by the degradation and detoxification of POPs. Moreover, they improve plant growth and health due to their innate plant growth-promoting mechanisms. This review provides a critical view of factors that affect absorption and translocation of POPs in plants and the limitations that plant have to deal with during the remediation of POPs. Moreover, the synergistic effects of plant-bacteria interactions in the phytoremediation of organic pollutants with special reference to POPs are discussed.

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“…In recent years, variants of NFWs are exploited to treat anthropogenic discharges such as municipal wastewater, agriculture runoff, industrial effluents, etc . This includes constructed wetlands (CWs), floating treatment wetlands (FTWs), hydroponic root mats (HRMs), etc.…”

Section: Introductionmentioning

confidence: 99%

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

102

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Floating treatment wetland (FTW) is an effective and sustainable technology for wastewater treatment. It has been widely adopted for treating various kinds of polluted water including agricultural runoff, stormwater, industrial effluents, etc. In FTWs, plants are vegetated on a floating mat while their roots are extended down to the contaminated water hence acting as biological filters. Nutrients and potentially toxic metal(s)/element(s) are taken up from the wastewater by plants through their roots whereas organic matter is degraded by the microorganisms forming biofilms on the roots and mat surface. Additionally, organic contaminants which are already taken up by the plants are degraded by endophytic bacteria in planta. This article provides an overview of FTWs and their application for wastewater treatment. The key factors which have an impact on the performance of FTWs are also described. Lastly, the potential role of combined use of plants and bacteria in FTWs for the maximum remediation of polluted water is emphasized.

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Ecology of bacterial endophytes associated with wetland plants growing in textile effluent for pollutant-degradation and plant growth-promotion potentials

Cited by 62 publications

References 47 publications

Phytoremediation: recent advances in plant-endophytic synergistic interactions

Phytoremediation: recent advances in plant-endophytic synergistic interactions

Plant–bacteria partnerships for the remediation of persistent organic pollutants

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

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