Investigating the role of root exudates in the interaction between oak seedlings and purple moor grass in temperate forest

Fernández, M.a Concepción Sánchez; Malagoli, Philippe; Gallet, Christiane; Fernandez, Catherine; Vernay, Antoine; Améglio, Thierry; Balandier, Philippe

doi:10.1016/j.foreco.2021.119175

Cited by 11 publications

(9 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tall fescue and maize are widely used for the rhizoremediation of oil-contaminated soil because their roots are well-developed 29 – 32 . The interaction between the roots and rhizobacteria is a key parameter for rhizoremediation performance, with the root exudate potentially positively or negatively affecting rhizobacteria activity 33 – 37 . The effect of tall fescue or maize root exudate on N 2 O reduction by Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

“…The interaction between Bacillus sp. www.nature.com/scientificreports/ the roots and rhizobacteria is a key parameter for rhizoremediation performance, with the root exudate potentially positively or negatively affecting rhizobacteria activity [33][34][35][36][37] . The effect of tall fescue or maize root exudate on N 2 O reduction by Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Kim

Cho

2022

Sci Rep

View full text Add to dashboard Cite

The demand for rhizoremediation technology that can minimize greenhouse gas emissions while effectively removing pollutants in order to mitigate climate change has increased. The inoculation effect of N2O-reducing Pseudomonas sp. TF716 on N2O emissions and on remediation performance during the rhizoremediation of diesel-contaminated soil planted with tall fescue (Festuca arundinacea) or maize (Zea mays) was investigated. Pseudomonas sp. TF716 was isolated from the rhizosphere soil of tall fescue. The maximum N2O reduction rate of TF716 was 18.9 mmol N2O g dry cells−1 h−1, which is superior to the rates for previously reported Pseudomonas spp. When Pseudomonas sp. TF716 was added to diesel-contaminated soil planted with tall fescue, the soil N2O-reduction potential was 2.88 times higher than that of soil with no inoculation during the initial period (0–19 d), and 1.08–1.13 times higher thereafter. However, there was no enhancement in the N2O-reduction potential for the soil planted with maize following inoculation with strain TF716. In addition, TF716 inoculation did not significantly affect diesel degradation during rhizoremediation, suggesting that the activity of those microorganisms involved in diesel degradation was unaffected by TF716 treatment. Analysis of the dynamics of the bacterial genera associated with N2O reduction showed that Pseudomonas had the highest relative abundance during the rhizoremediation of diesel-contaminated soil planted with tall fescue and treated with strain TF716. Overall, these results suggest that N2O emissions during the rhizoremediation of diesel-contaminated soil using tall fescue can be reduced with the addition of Pseudomonas sp. TF716.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Kim

Cho

2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Tall fescue and maize are widely used for the rhizoremediation of oil-contaminated soil because their roots are well-developed [29][30][31][32] . The interaction between the roots and rhizobacteria is a key parameter for rhizoremediation performance, with the root exudate potentially positively or negatively affecting rhizobacteria activity [33][34][35][36][37] . The effect of tall fescue or maize root exudate on N 2 O reduction by Pseudomonas sp.…”

Section: Resultsmentioning

confidence: 99%

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Kim

Cho

2022

Preprint

View full text Add to dashboard Cite

The demand for rhizoremediation technology that can minimize greenhouse gas emissions while effectively removing pollutants in order to mitigate climate change has increased. The inoculation effect of N2O-reducing Pseudomonas sp. TF716 on N2O emissions and on remediation performance during the rhizoremediation of diesel-contaminated soil planted with tall fescue (Festuca arundinacea) or maize (Zea mays) was investigated. Pseudomonas sp. TF716 was isolated from the rhizosphere soil of tall fescue. The maximum N2O reduction rate of TF716 was 18.9 mmol N2O·g dry cells− 1·h− 1, which is superior to the rates for previously reported Pseudomonas spp. When Pseudomonas sp. TF716 was added to diesel-contaminated soil planted with tall fescue, the soil N2O-reduction potential was 2.88 times higher than that of soil with no inoculation during the initial period (0 − 19 d), and 1.08 − 1.13 times higher thereafter. However, there was no enhancement in the N2O-reduction potential for the soil planted with maize following inoculation with strain TF716. In addition, TF716 inoculation did not significantly affect diesel degradation during rhizoremediation, suggesting that the activity of those microorganisms involved in diesel degradation was unaffected by TF716 treatment. Analysis of the dynamics of the bacterial genera associated with N2O reduction showed that Pseudomonas had the highest relative abundance during the rhizoremediation of diesel-contaminated soil planted with tall fescue and treated with strain TF716. Overall, these results suggest that N2O emissions during the rhizoremediation of diesel-contaminated soil using tall fescue can be reduced with the addition of Pseudomonas sp. TF716.

show abstract

“…Allelopathy refers to the phenomenontextbf by which metabolic secretions released by plants or microorganisms cause beneficial or detrimental effects on organisms in the local environment (Rice, 1992;Wei et al, 2020;Fernandez et al, 2021;Worsley et al, 2021). Dominant species tend to have strong allelopathic effects as their partially decomposed litter releases phytotoxins in their surrounding, thereby affecting community regeneration (Walbott et al, 2018;Huo et al, 2019;Huang et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Allelopathic potential and allelochemical composition in different soil layers of Rhododendron delavayi forest, southwest China

Quan

Wang²,

Li³

et al. 2022

Front. Ecol. Evol.

View full text Add to dashboard Cite

Forests habituated by Rhododendron delavayi often lack understory vegetation, which could possibly be a consequence of allelopathy. It is a phenomenon by virtue of which certain plant species produce allelochemicals that affect the growth and behavior of surrounding plants. To elucidate the allelopathic potential and allelochemicals present in the different layers of a R. delavayi forest, extracts obtained from three layers of the forest were used for seed germination bioassays and gas chromatography-mass spectrometry (GC–MS) analysis. Aqueous extracts of the litter and humus layers significantly inhibited the seed germination of R. delavayi, Festuca arundinacea, and Lolium perenne, with the litter layer causing the strongest inhibitory effect. A total of 26 allelochemicals were identified in the litter, humus, and soil layers by GC–MS analysis. The primary allelochemicals in the soil and humus layer were organic acids, while the main allelochemicals in the litter layer were phenolic acids. The redundancy analysis revealed the significance of total nitrogen (TN) and relative water content (RWC) in explaining the distribution of the allelochemicals. The results indicated that the litter layer exerted the maximum allelopathic effect due to presence of maximum amount of allelochemical especially the phenolic acids.

show abstract

Investigating the role of root exudates in the interaction between oak seedlings and purple moor grass in temperate forest

Cited by 11 publications

References 85 publications

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Inoculation effect of Pseudomonas sp. TF716 on N2O emissions during rhizoremediation of diesel-contaminated soil

Allelopathic potential and allelochemical composition in different soil layers of Rhododendron delavayi forest, southwest China

Contact Info

Product

Resources

About