Metal–Microbe Interaction and Bioremediation

Joshi, S. R.; Kalita, Debajit; Kumar, Rakshak; Nongkhlaw, Macmillan; Swer, Pynskhem Bok

doi:10.1007/978-3-319-07665-2_12

Cited by 3 publications

(1 citation statement)

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“…However, these methods are labour‐intensive, expensive, require high energy and are inefficient (Celaya et al, 2000; Paidi et al, 2021). Though the low‐cost biosorbent materials were reported by several investigators (Al‐Qodah, 2006; Chuah et al, 2005; Vijayaraghavan & Yun, 2007), micro‐organisms are the robust tools for the conversion of toxic heavy metals into their non‐toxic forms (Joshi et al, 2014). Therefore, the development of microbiological strategies to remove heavy metals in the rhizosphere may be significant to assist the vegetable crops optimally surpass abiotic stresses.…”

Section: Introductionmentioning

confidence: 99%

Development of siderophore-based rhizobacterial consortium for the mitigation of biotic and abiotic environmental stresses in tomatoes: Anin vitroandin plantaapproach

Karuppiah

Suganthy

Muralitharan

et al. 2022

Journal of Applied Microbiology

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Aim Tomato‐associated plant‐growth‐promoting rhizosphere bacteria were screened for effective antagonistic activity against the fungal vascular wilt pathogens; tolerance to heavy metals; and enhancing the bioavailability of iron for tomato plants through in vitro and in vivo approaches. Methods and Results Among the 121 rhizobacteria screened for siderophores, 25 isolates were observed to be siderophore producers and out of these, seven isolates chelate copper and iron thus exhibiting in vitro antagonism against the virulent strains of Fusarium oxysporum f. sp. lycopersici MTCC10270 (Fol), Fusarium equiseti MFol and Sarocladium sp. SWL isolated from infected tomatoes. Pseudomonas stutzeri KRP8 was identified to be the most potent strain among the siderophore producers and its siderophores were chemically characterized by mass spectra as metal bound and metal‐free forms. Upon bio‐inoculation of fortified bacterial consortium (siderozote) into the rhizosphere of vermiculite pot cultured tomatoes supplied with varying concentrations of iron and copper ions, we observed in planta growth improvements, antagonism, enhancement of bioavailability of iron and heavy metal tolerance using Inductively Coupled Plasma‐Optical Emission Spectrometry. Conclusion and Significance of the Study Our rhizobacterial consortium provides an opportunity for soil reclamation through an ecofriendly method for a heavy metal‐free agricultural landscape.

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