The role of halophyte-induced saline fertile islands in soil microbial biogeochemical cycling across arid ecosystems.

Halophyte shrubs, prevalent in arid regions globally, create saline fertile islands under their canopy. This study investigates the soil microbial communities and their energy utilization strategies associated with tamarisk shrubs in arid ecosystems. Shotgun sequencing revealed that high salinity in tamarisk islands reduces functional gene alpha-diversity and relative abundance compared to bare soils.

Sphingobium wenxiniae sp. nov., a synthetic pyrethroid (SP)-degrading bacterium isolated from activated sludge in an SP-manufacturing wastewater treatment facility.

A synthetic pyrethroid (SP)-degrading bacterial strain, designated JZ-1(T), was isolated from activated sludge of a SP-manufacturing wastewater treatment facility and studied using a polyphasic taxonomic approach. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain JZ-1(T) belonged to the genus Sphingobium, showing highest sequence similarities to Sphingobium faniae DSM 21829(T) (98.6 %), Sphingobium cloacae JCM 10874(T) (98.

Sphingobium faniae sp. nov., a pyrethroid-degrading bacterium isolated from activated sludge treating wastewater from pyrethroid manufacture.

A bacterial strain capable of degrading pyrethroid, designated JZ-2(T), was isolated from activated sludge treating pyrethroid-contaminated wastewater. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain JZ-2(T) belongs to the genus Sphingobium. It showed the highest levels of 16S rRNA gene sequence similarity to Sphingobium cloacae JCM 10874(T) (98.

Cloning of a novel pyrethroid-hydrolyzing carboxylesterase gene from Sphingobium sp. strain JZ-1 and characterization of the gene product.

A novel esterase gene, pytH, encoding a pyrethroid-hydrolyzing carboxylesterase was cloned from Sphingobium sp. strain JZ-1. The gene contained an open reading frame of 840 bp.