Effects of Arsenic and Iron on the Community and Abundance of Arsenite-Oxidizing Bacteria in an Arsenic-Affected Groundwater Aquifer

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Pipattanajaroenkul, Phurinat; Chotpantarat, Srilert; Termsaithong, Teerasit; Sonthiphand, Prinpid;

ผู้เผยแพร่: Springer

ปีที่เผยแพร่ (ค.ศ.): 2021

Volume number: 78

Issue number: 4

หน้าแรก: 1324

หน้าสุดท้าย: 1334

จำนวนหน้า: 11

นอก: 0343-8651

eISSN: 1432-0991

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101807944&doi=10.1007%2fs00284-021-02418-8&partnerID=40&md5=7eef40210fb36a21b96228a136b80a1d

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Arsenic (As) contamination of groundwater aquifers is a global environmental problem, especially in South and Southeast Asian regions, and poses a risk to human health. Arsenite-oxidizing bacteria that transform As(III) to less toxic As(V) can be potentially used as a groundwater As remediation strategy. This study aimed to examine the community and abundance of arsenite-oxidizing bacteria in groundwater with various As concentrations from Rayong Province, Thailand using PCR-cloning-sequencing and quantitative PCR (qPCR) of catalytic subunit of arsenite oxidase gene (aioA). Key factors influencing their community and abundance were also identified. The results demonstrated that arsenite-oxidizing bacteria retrieved from groundwater were phylogenetically related to Betaproteobacteria and Alphaproteobacteria. The aioA gene abundances ranged from 8.6 × 101 to 1.1 × 104 copies per ng of genomic DNA, accounting for 0.16–1.37% of the total 16S rRNA bacterial gene copies. Although the abundance of arsenite-oxidizing bacteria in groundwater was low, groundwater with As(III) dominance likely promoted their abundance which possibly played an important role in chemolithoautotrophic oxidation of As(III) to As(V). Fe and As(III) were the major environmental factors influencing the community and abundance of arsenite-oxidizing bacteria. The knowledge gained from this study can be used to further contribute to the development of bioremediation strategies for As removal from groundwater resources. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC part of Springer Nature.

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