Enhancing arsenic removal from arsenic-contaminated water by Echinodorus cordifolius-endophytic Arthrobacter creatinolyticus interactions

Journal of Environmental Management
Channratha PrumPaitip Thiravetyan

Abstract

In this study, Echinodorus cordifolius was the best plant for arsenic removal compared to Cyperus alternifolius, Acrostichum aureum and Colocasia esculenta. Under arsenic stress, the combination of E. cordifolius with microbes (Bacillus subtilis and Arthrobacter creatinolyticus) was investigated. It was found that A. creatinolyticus, a native microbe, can endure arsenic toxicity, produce higher indole-3 acetic acid (IAA) and ammonium production better than B. subtilis. Interestingly, E. cordifolius-endophytic A. creatinolyticus interactions showed that dipping plant roots in A. creatinolyticus suspension for 5 min had the highest arsenic removal efficiency compared to dipping plant roots in A. creatinolyticus suspension for 2 h and inoculating A. creatinolyticus with E. cordifolius directly. Our findings indicated that under this inoculation condition, the inoculum could colonize from the roots to the shoots of the host tissues in order to avoid arsenic toxicity and favored arsenic removal by the host through plant growth-promoting traits, such as IAA production. Highest levels of IAA were found in plant tissues and the plants exhibited higher root elongation than other conditions. Moreover, low level of reactive oxygen species...Continue Reading

Citations

Apr 25, 2019·Environmental Science and Pollution Research International·Xuewei LiuZhengguo Song
Aug 31, 2019·International Journal of Phytoremediation·Bongkotrat SuyamudDuangrat Inthorn
Jan 26, 2020·Environmental Science and Pollution Research International·Nauman AliAbdullah M Asiri
Feb 16, 2021·Environmental Science and Pollution Research International·Sana IrshadQaisar Mahmood
Jun 12, 2019·The Science of the Total Environment·Chairat TreesubsuntornPaitip Thiravetyan
Aug 31, 2019·The Science of the Total Environment·C CorrotoA L Pérez Carrera
Jun 21, 2021·Chemosphere·Aditi Shreeya Bali, Gagan Preet Singh Sidhu

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