Anaerobic As(III) Oxidation Coupled with Nitrate Reduction and Attenuation of Dissolved Arsenic by <i>Noviherbaspirillum</i> Species

Wu, Yingliang; Chai, Cheng-Wei; Li, Yanning; Chen, Jian; Yuan, Yong; Hu, Gang; Rosen, Barry P.; Zhang, Jun

doi:10.1021/acsearthspacechem.1c00155

Cited by 22 publications

(7 citation statements)

References 51 publications

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“…1 ), but most of these taxa were low in abundance with a mean relative abundance <1%. For example, Fibrobacteres is an important phylum of cellulose-degrading bacteria ( Ransom-Jones et al, 2012 ); the genus Devosia possesses bioremediation potential ( Talwar et al, 2020 ); and the denitrifying bacteria Noviherbaspirillum ( Wu et al, 2021 ) were significantly upregulated over time. The following significantly decreased over time: Firmicutes, which are plant growth-promoting bacilli ( Kumar, Khare & Dubey, 2012 ); Bacillales, which have effective biological control and biodegradation potential ( Barathi et al, 2020 ); Nitrosomonadales, which are related to sulfate and iron reduction; and Desulfuromonadales, which are an order capable of iron and sulfate reduction ( Wunder et al, 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Soil metabolomics and bacterial functional traits revealed the responses of rhizosphere soil bacterial community to long-term continuous cropping of Tibetan barley

Zhao

Yao

et al. 2022

PeerJ

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Continuous cropping often leads to an unbalanced soil microbial community, which in turn negatively affects soil functions. However, systematic research of how these effects impact the bacterial composition, microbial functional traits, and soil metabolites is lacking. In the present study, the rhizosphere soil samples of Tibetan barley continuously monocropped for 2 (CCY02), 5 (CCY05), and 10 (CCY10) years were collected. By utilizing 16S high-throughput sequencing, untargeted metabolomes, and quantitative microbial element cycling smart chips, we examined the bacterial community structure, soil metabolites, and bacterial functional gene abundances, respectively. We found that bacterial richness (based on Chao1 and Phylogenetic Diversity [PD] indices) was significantly higher in CCY02 and CCY10 than in CCY05. As per principal component analysis (PCA), samples from the continuous monocropping year tended to share more similar species compositions and soil metabolites, and exhibited distinct patterns over time. The results of the Procrustes analysis indicated that alterations in the soil metabolic profiles and bacterial functional genes after long-term continuous cropping were mainly mediated by soil microbial communities (P < 0.05). Moreover, 14 genera mainly contributed to the sample dissimilarities. Of these, five genera were identified as the dominant shared taxa, including Blastococcus, Nocardioides, Sphingomonas, Bacillus, and Solirubrobacter. The continuous cropping of Tibetan barley significantly increased the abundances of genes related to C-degradation (F = 9.25, P = 0.01) and P-cycling (F = 5.35, P = 0.03). N-cycling significantly negatively correlated with bacterial diversity (r = − 0.71, P = 0.01). The co-occurrence network analysis revealed that nine hub genera correlated with most of the functional genes and a hub taxon, Desulfuromonadales, mainly co-occurred with the metabolites via both negative and positive correlations. Collectively, our findings indicated that continuous cropping significantly altered the bacterial community structure, functioning of rhizosphere soils, and soil metabolites, thereby providing a comprehensive understanding of the effects of the long-term continuous cropping of Tibetan barley.

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Section: Resultsmentioning

confidence: 99%

Soil metabolomics and bacterial functional traits revealed the responses of rhizosphere soil bacterial community to long-term continuous cropping of Tibetan barley

Zhao

Yao

et al. 2022

PeerJ

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“…Noviherbaspirillum [80] Rhizobacter [81] Sulfurospirillum [82] Thauera [82] Vogesella [83] Nitrite oxidation Candidatus Nitrotoga [84] Nitrite reduction…”

Section: Nitrate Reductionmentioning

confidence: 99%

“…Curvibacter [98] Leptothrix [99] Noviherbaspirillum [80] Sideroxydans [100] Undibacterium [98] Fe (III) reduction…”

Section: Fe (Ii) Oxidationmentioning

confidence: 99%

Spatial Variation of Cladophora Epiphytes in the Nan River, Thailand

Ruen-Pham

Graham

Satjarak

2021

Plants

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Cladophora is an algal genus known to be ecologically important. It provides habitats for microorganisms known to provide ecological services such as biosynthesis of cobalamin (vitamin B12) and nutrient cycling. Most knowledge of microbiomes was obtained from studies of lacustrine Cladophora species. However, whether lotic freshwater Cladophora microbiomes are as complex as the lentic ones or provide similar ecological services is not known. To illuminate these issues, we used amplicons of 16S rDNA, 18S rDNA, and ITS to investigate the taxonomy and diversity of the microorganisms associated with replicate Cladophora samples from three sites along the Nan River, Thailand. Results showed that the diversity of prokaryotic and eukaryotic members of Cladophora microbiomes collected from different sampling sites was statistically different. Fifty percent of the identifiable taxa were shared across sampling sites: these included organisms belonging to different trophic levels, decomposers, and heterotrophic bacteria. These heterogeneous assemblages of bacteria, by functional inference, have the potential to perform various ecological functions, i.e., cellulose degradation, cobalamin biosynthesis, fermentative hydrogen production, ammonium oxidation, amino acid fermentation, dissimilatory reduction of nitrate to ammonium, nitrite reduction, nitrate reduction, sulfur reduction, polyphosphate accumulation, denitrifying phosphorus-accumulation, and degradation of aromatic compounds. Results suggested that river populations of Cladophora provide ecologically important habitat for microorganisms that are key to nutrient cycling in lotic ecosystems.

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“…Contamination of As in the paddy field poses a critical challenge to growers because fragrant rice is sensitive to abiotic stresses that result in yield loss and 2-AP reduction . Arsenite (As(III)) and arsenate (As(V)) are two forms of inorganic As, in particular, As(V) containing Fe(III) (oxyhydr)oxides can be dissolved by reduction into As(III) becoming more bioavailable in paddy field . A recent publication showed that the total As content in the rice grain increased by about 80% under continuous flooding conditions compared with aerobic conditions, suggesting negative impact of As(III) rice.…”

Section: Introductionmentioning

confidence: 99%

l-Glutamate Seed Priming Enhances 2-Acetyl-1-pyrroline Formation in Fragrant Rice Seedlings in Response to Arsenite Stress

Huang,

Deng,

Zhao

et al. 2023

J. Agric. Food Chem.

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2-Acetyl-1-pyrroline (2-AP) is a fragrance compound and flavor in fragrant rice whose precursors are generally glutamate (Glu) and proline (Pro). Our previous study revealed that exogenous Glu enhanced the arsenic (As) tolerance in fragrant rice by improving the ascorbic acid−glutathione cycle and the Pro content in roots. However, less is known about how Glu is involved in 2-AP biosynthesis in fragrant rice under As stress. Herein, a hydroponic experiment of L-Glu seed priming with 0, 100, and 500 μM L-glutamic acid solutions was conducted with two fragrant rice varieties. After that, the 10-day-old seedlings were cultured under 0 and 100 μM arsenite stress for 10 d. Results showed that the 2-AP and Pro contents were increased by 18−30% and 21−78% under As100 μM-Glu100 μM treatment in comparison to the control As100 μM to Glu0 μM, while the activities of pyrroline-5-carboxylate synthetase (P5CS) and proline dehydrogenase (ProDH) were increased by 19−46% and 3−19%, respectively. Furthermore, the 2-AP, Pro contents, and P5CS activity were correlated positively. Correspondingly, a significant abundance of differential expressed metabolites (18) and differential expressed genes (26) was observed in amino acid metabolism and glutathione metabolism pathways. In addition, several essential genes were verified and grouped into the pathways of glutathione metabolism, proline, and arginine metabolism with antioxidant defense system to comodulate 2-AP biosynthesis and stress detoxification. Therefore, the Glu seed priming treatment had a positive impact on the 2-AP biosynthesis of fragrant rice under 100 μM arsenite toxicity.

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Anaerobic As(III) Oxidation Coupled with Nitrate Reduction and Attenuation of Dissolved Arsenic by Noviherbaspirillum Species

Cited by 22 publications

References 51 publications

Soil metabolomics and bacterial functional traits revealed the responses of rhizosphere soil bacterial community to long-term continuous cropping of Tibetan barley

Soil metabolomics and bacterial functional traits revealed the responses of rhizosphere soil bacterial community to long-term continuous cropping of Tibetan barley

Spatial Variation of Cladophora Epiphytes in the Nan River, Thailand

l-Glutamate Seed Priming Enhances 2-Acetyl-1-pyrroline Formation in Fragrant Rice Seedlings in Response to Arsenite Stress

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