Identification and functional characteristics of chlorpyrifos‐degrading and plant growth promoting bacterium Acinetobacter calcoaceticus

Abstract

A bacterial strain D10 with strong ability of degrading chlorpyrifos was isolated from rhizosphere of chives contaminated with pesticide. It was found that it's capable of utilizing chlorpyrifos as the sole source of carbon for growth, and within the first 4 days the extent of degradation at initial concentration of 100 mg L(-1) was 60.0%. It also showed a high ability of degrading chlorpyrifos in sterilized soil, and the degradation reached up to 60.2% after 18 days. In addition, the strain D10 also showed multiple plant growth-promoting traits of phosphate solubilization, indole-3-acetic acid and siderophore production. The results indicate that the strain D10 has potential in the application of pesticide-degrading and plant growth promotion. Strain D10 was identified as Acinetobacter calcoaceticus based on its morphological, physiological-biochemical properties and the 16S rRNA sequence analysis.

Biotechnology of siderophores in high-impact scientific fields

“…This demonstrates the potential use of bacillibactin as a biocontrol agent and an enhancer of plant growth. Siderophores enhanced iron solubilization and this was confirmed by a study with Acinetobacter calcoaceticus (54). The bacterium degrades the phosphate pesticide chlorpyriphos, helping in phosphorus solubilization available to the plant, and produces siderophores that enhance plant growth.…”

Evidence of biodegradation of chlorpyrifos by a newly isolated heavy metal-tolerant bacterium Acinetobacter sp. strain MemCl4

“…Survey of Acinetobacter genome sequences, currently available in public databases indicated the absence of opd or mpd genes (involved in OP compound degradation). Very recently, a chlorpyrifos-degrading bacterium Acinetobacter calcoaceticus was reported by Zhao et al (2014), but no significant details of chlorpyrifos degradation pathway were reported for this strain. To the best of our knowledge, this is the first report of a chlorpyrifosdegrading bacterial strain belonging to the genus Acinetobacter having heavy metal tolerance.…”

Disruption of iron homeostasis and resultant health effects upon exposure to various environmental pollutants: A critical review

“…CPF is one of the most widely produced and commonly used OPs, and CPF contamination in fruits and vegetables is serious (Gebremariam et al, 2012;Singh et al, 2002;Zhao et al, 2014). A number of studies have documented the adverse Fig.…”