Rhizospheric plant-microbe synergistic interactions achieve efficient arsenic phytoextraction by Pteris vittata

Yang, Chongyang; Han, Ning; Inoue, Chihiro; Yang, Yu‐Liang; Nojiri, Hideaki; Ho, Y. F.; Chien, Mei Fang

doi:10.1016/j.jhazmat.2022.128870

Cited by 34 publications

(9 citation statements)

References 51 publications

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“…Previous studies have shown that P . vittata and other plants are more tolerant of As(V) than As(III), and their uptake of soil arsenic is mainly in the form of As(V) ( Yan et al, 2019 ; Yang et al, 2022 ). In this work, the enrichment of functional genes in arsenic transformation in arsenic-polluted soil should also impact the phytoremediation of soil arsenic by P .…”

Section: Discussionmentioning

confidence: 99%

“…However, most of these studies were conducted in a controlled environment (e.g., pot experiment), and there were few successful cases of in situ inoculation of microorganisms to improve the remediation efficiency of P . vittata under field conditions ( Yang et al, 2022 ). The difficulty of target microorganisms surviving and adapting to field environments is an important reason for the poor effect of field inoculation tests ( Wan et al, 2009 ).…”

Section: Discussionmentioning

confidence: 99%

“…Studies have shown that the root exudates of P . vittata can affect soil pH, thereby altering the bioavailability of arsenic in soil ( Yang et al, 2022 ), which is one of the main factors limiting the arsenic absorption efficiency of P . vittata .…”

Section: Introductionmentioning

confidence: 99%

“…vittata is a major driver of shifts in the structure and function of the rhizosphere soil microbiome. Thus, exploring the synergistic effect of hyperaccumulators on rhizosphere microorganisms can improve our understanding of the roles of plants and associated microbes in metal mobilization ( Yang et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Microbial community composition in the rhizosphere of Pteris vittata and its effects on arsenic phytoremediation under a natural arsenic contamination gradient

Jia

Zhang

et al. 2022

Front. Microbiol.

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Arsenic contamination causes numerous health problems for humans and wildlife via bioaccumulation in the food chain. Phytoremediation of arsenic-contaminated soils with the model arsenic hyperaccumulator Pteris vittata provides a promising way to reduce the risk, in which the growth and arsenic absorption ability of plants and the biotransformation of soil arsenic may be greatly affected by rhizosphere microorganisms. However, the microbial community composition in the rhizosphere of P. vittata and its functional role in arsenic phytoremediation are still poorly understood. To bridge this knowledge gap, we carried out a field investigation and pot experiment to explore the composition and functional implications of microbial communities in the rhizosphere of four P. vittata populations with a natural arsenic contamination gradient. Arsenic pollution significantly reduced bacterial and fungal diversity in the rhizosphere of P. vittata (p < 0.05) and played an important role in shaping the microbial community structure. The suitability of soil microbes for the growth of P. vittata gradually decreased following increased soil arsenic levels, as indicated by the increased abundance of pathogenic fungi and parasitic bacteria and the decrease in symbiotic fungi. The analysis of arsenic-related functional gene abundance with AsChip revealed the gradual enrichment of the microbial genes involved in As(III) oxidation, As(V) reduction, and arsenic methylation and demethylation in the rhizosphere of P. vittata following increased arsenic levels (p < 0.05). The regulation of indigenous soil microbes through the field application of fungicide, but not bactericide, significantly reduced the remediation efficiency of P. vittata grown under an arsenic contamination gradient, indicating the important role of indigenous fungal groups in the remediation of arsenic-contaminated soil. This study has important implications for the functional role and application prospects of soil microorganisms in the phytoremediation of arsenic-polluted soil.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microbial community composition in the rhizosphere of Pteris vittata and its effects on arsenic phytoremediation under a natural arsenic contamination gradient

Jia

Zhang

et al. 2022

Front. Microbiol.

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“…Studies show that the rhizosphere microbes of P. vittata play a crucial role in its As hyperaccumulation. − Among them, an arbuscular mycorrhizal fungus (AMF) effectively enhances As accumulation in P. vittata. − Some scientists believe that AMF can directly enhance As uptake and translocation by P.…”

Section: Introductionmentioning

confidence: 99%

Novel Mycorrhiza-Specific P Transporter PvPht1;6 Contributes to As Accumulation at the Symbiotic Interface of As-Hyperaccumulator Pteris vittata

Sun

Zhang

Liao

et al. 2022

Environ. Sci. Technol.

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Arsenic (As) is toxic and ubiquitous in the environment, posing a growing threat to human health. As-hyperaccumulator Pteris vittata has been used for phytoremediation of As-contaminated soil. Symbiosis with arbuscular mycorrhizal fungi (AMF) enhances As accumulation by P. vittata, which is different from As inhibition in typical plants. In this study, P. vittata seedlings inoculated with or without AMF were cultivated in As-contaminated soils for 2 months. AMF−root symbiosis enhanced plant growth, with 64.5% greater As contents in the fronds. After exposure to AsV for 2 h, the arsenate (AsV) and arsenite (AsIII) contents in AMF−roots increased by 1.8-and 3.6-fold, suggesting more efficient As uptake by P. vittata with AMF−roots. Plants take up and transport AsV via phosphate transporters (Phts). Here, for the first time, we identified a novel mycorrhiza-specific Pht transporter, PvPht1;6, from P. vittata. The transcripts of PvPht1;6 were strongly induced in AMF−roots, which were localized to the plasma membrane of arbuscule-containing cells. By complementing a yeast mutant lacking 5-Phts, we confirmed PvPht1;6′s transport activity for both P and AsV. In contrast to typical AMF-inducible phosphate transporter LePT4 from tomato, PvPht1;6 showed greater AsV transport capacity. The results suggest that PvPht1;6 is probably critical for AsV transport at the periarbuscular membrane of P. vittata root cells, revealing the underlying mechanism of efficient As accumulation in P. vittata with AMF−roots.

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Microbial Phytohormone Production as Signal for Plant Growth Promotion

Mu’azu,

Zarkasi,

Haris

et al. 2024

Soil Bacteria

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Rhizospheric plant-microbe synergistic interactions achieve efficient arsenic phytoextraction by Pteris vittata

Cited by 34 publications

References 51 publications

Microbial community composition in the rhizosphere of Pteris vittata and its effects on arsenic phytoremediation under a natural arsenic contamination gradient

Microbial community composition in the rhizosphere of Pteris vittata and its effects on arsenic phytoremediation under a natural arsenic contamination gradient

Novel Mycorrhiza-Specific P Transporter PvPht1;6 Contributes to As Accumulation at the Symbiotic Interface of As-Hyperaccumulator Pteris vittata

Microbial Phytohormone Production as Signal for Plant Growth Promotion

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