Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Xu, Dawei; Zhao, Yannan; Zhang, Jian-cong

doi:10.1515/chem-2020-0059

Cited by 13 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, DFC and FC treatments signi cantly decreased biomass of Artemisia compared with DC treatment, Cu addition also signi cantly decreased the biomass. The decrease of Artemisia biomass under the environmental stress (including intermittent and continuous ooding, Cu addition in this study) may decreased the ability of Artemisia to secrete root exudates (Duan et al, 2020), thus decreasing their in uence on soil organic matter. This may explain the weak in uence of soil organic matter on metal accumulation processes under different water regime.…”

Section: Rhizosphere Iron Plaquementioning

confidence: 80%

“…Riparian wetland, located in the transition of aquatic and terrestrial ecosystem, plays an important role maintaining nutrients, keeping biodiversity, reducing erosion and exchanging materials Zhang et al, 2020;Mir et al, 2022). However, the riparian zone has been intensively contaminated by heavy metals because of anthropogenic activities including agricultural and industrial development (Rajeshkumar et al, 2018;.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Copper accumulation process and rhizosphere mechanism under different water regime in riparian wetland of Poyang Lake, China

Xu¹,

Zhang²,

Liu³

et al. 2022

Preprint

View full text Add to dashboard Cite

Purpose Conducting research about the metal accumulation process of wetland plants and relevant rhizosphere mechanism can better understand the biogeochemical behavior of metals in riparian wetland. However, little relative information is available for riparian wetland. Methods In this study, we explored the copper accumulation process of dominant plant of Artemisia and rhizosphere mechanism under different water regime (flooding condition [FC], dry condition [DC] and alternate dry and flooding condition [DFC]) in riparian wetland of Poyang Lake.Results The result indicated that continuous or intermittent flooding may impede the accumulation and transformation of Cu by Artemisia. The correlation and multivariate analysis indicated that rhizosphere pH, Cu fraction and iron plaque on root surface can significantly influence Cu accumulation process. The transformation of exchangeable fraction to carbonate bound fraction and organic fraction under DFC and FC treatments may impede the accumulation of Cu in Artemisia. Formation of iron plaque under DFC and DC treatments can enhance the Cu accumulation in roots, but impede the translocation of Cu to aboveground tissues. Higher rhizosphere pH under DFC and FC treatments may impede the translocation of Cu by enhancing formation of iron plaque. Additionally, the growth status, bioaccumulation factor, translocation factor and root/aerial Cu content indicated that Artemisia can accumulate quantitative Cu in roots, but not suitable for phytoextracting Cu contaminated soil because of significant decrease of biomass with Cu addition, especially under DFC and FC treatments. Conclusion Altogether, our results indicate that Cu accumulation processes and ability is impeded by DFC and FC treatments.

show abstract

Section: Rhizosphere Iron Plaquementioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Copper accumulation process and rhizosphere mechanism under different water regime in riparian wetland of Poyang Lake, China

Xu¹,

Zhang²,

Liu³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…These acids have also been found in other species (Lanoue et al, 2010; Li et al, 2013) and have been related with a defence against pathogenic microorganisms. Benzoic acid was less exudated as P availability increased by the roots of Cyperus alternifolius a wetland hydrophyte (Duan, Zhao, & Zhang, 2020). However, two other wetlands species Pistia stratiotes and Hydrilla verticillata exudate benzoic acid but did not respond to P variation in the nutrient solution.…”

Section: Discussionmentioning

confidence: 99%

Differential responses of three Urochloa species to low phosphorus availability

Baptistella

Llerena

Domingues-Júnior

et al. 2021

Annals of Applied Biology

View full text Add to dashboard Cite

Urochloa (syn. Brachiaria spp.) is the most cultivated forage species in the tropics and is being introduced to agroecosystems as it can provide multiple services, such as nutrient cycling. In this regard, phosphorus (P) cycling has received particular attention for its little availability in soils and the fact that Urochloa has mechanisms to cope with its low availability. However, there are interspecific differences regarding adaptation to low fertility and P requirements among Urochloa species. This study aimed to evaluate the responses of three Urochloa species—Urochloa brizantha, Urochloa decumbens and Urochloa ruziziensis—to low P availability, as well as their mechanisms to grow on these conditions. We conducted a hydroponic experiment with three levels of P availability—10% (6.2 mg P dm−3), 25% (15.5 mg P dm−3) and 100% (62 mg P dm−3)—and evaluated plant biomass production, P tissue concentration, root acid phosphatase activity, root exudation and P transporter expression on roots. We identified several metabolites in root exudates including amino acids, non‐protein amino acids, polyamides, organic acids and phenolic acids. Although all metabolites were found in all the species, metabolite exudation varied among species and P level. Overall, U. brizantha and U. ruziziensis plants exudated more metabolites when growing under P limitation (10 and 25% P), which can be a response to low P availability and stress. We identified three P transporters in roots from the PHT1 family—UPHT1;1a, UPHT1;1b and UPHT1;1c. We did not find an explicit expression pattern for UPHT1;1a, but the expression of UPHT1;1b and UPHT1;1c increased at low P availability. U. ruziziensis accumulated more biomass than the other species at all levels of P availability, possibly because of the greater expression of these P transporters. Urochloa species differ regarding nutrient availability requirements, including P, which may explain the P transporters expression and metabolite exudation results. Thus, to cope with low P in the soil, the species developed different metabolic strategies to improve the uptake of this nutrient.

show abstract

“…The increase was probably due to the release of organic matter by plant exudates, which were biodegradable. Some researchers point to the fact that plant exudates release through the roots, and that this process marks a living plant (Canarini et al 2019;Duan et al 2020;Kawasaki et al 2018).…”

Section: Organic Removal and Plantsmentioning

confidence: 99%

Performance of Selected Plants Based Growth on Landfill Leachate Treatment Using Wetland Application

Mangkoedihardjo¹,

Arliyani²

2023

IUJAS

View full text Add to dashboard Cite

Introduction: This research was conducted to process untreated leachate using plants in artificial wetlands. The aim was to obtain plant selection criteria based on the relative growth rate (RGR) and removal efficiency (Re) of biochemical oxygen demand (BOD) and chemical oxygen demand (COD). Methods: The methodology used leachate containing about 1,000 mg/L and 5,000 mg/L BOD and COD, respectively. Three plants, Typha angustifolia, Cyperus papyrus, and Canna indica, were tested. The research stages included a range finding test for 14 days and definitive leachate experiments for the three plants for 36 days. Results: The results revealed that three types of plants could process leachate without treatment for 36 days after acclimatization (DAA). The determining period was 0-12 DAA with a decrease in BOD and COD concentrations in the range of 40-60% and an increase in the ratio of BOD/COD, which expresses increased leachate biodegradability. The following 24 days showed a decrease in the BOD/COD ratio and a constant decrease in the concentration of both parameters as an indicator of the stability of leachate quality. This pattern was followed by plant growth performance and showed the order of priority for C. papyrus, C. indica, and T. angustifolia. Conclusions: There was an adequate leachate detention time when BOD and COD decreased to a maximum. The response time of plants in reducing the concentration of substances was a new approach to plant selection.

show abstract

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Cited by 13 publications

References 16 publications

Copper accumulation process and rhizosphere mechanism under different water regime in riparian wetland of Poyang Lake, China

Copper accumulation process and rhizosphere mechanism under different water regime in riparian wetland of Poyang Lake, China

Differential responses of three Urochloa species to low phosphorus availability

Performance of Selected Plants Based Growth on Landfill Leachate Treatment Using Wetland Application

Contact Info

Product

Resources

About