Effects of Dracontomelon duperreanum Leaf Litter on the Growth and Photosynthesis of Microcystis aeruginosa

Wang, Xiaoxiong; Szeto, Yim Tong Savio; Jiang, Chengchun; Wang, Xiaojun; Tao, Yi; Tu, Jianguo; Chen, Jing

doi:10.1007/s00128-018-2289-5

Cited by 13 publications

(3 citation statements)

References 21 publications

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“…Symbols represent 10, 3, and 5 repetitions ± SD in plant height, fresh and germination rate, respectively. Wang et al (2018) on the study of Dracontomelon leaf litter impacted the photosynthesis of Microcystis aeruginosa found that the growth rate of Microcystis aeruginosa in response to different extract concentrations was consistent with changes in the photosynthesis efficiency (alpha), maximal relative electron transport rate, and maximal quantum yield of PSII. Compared with our study, although it was slightly different from previous studies in some indicators, it could be found that the photosynthesis of goosegrass was adversely affected in general.…”

Section: Different Ratios Of Milk Vetch Straw and Soil Treatment On P...mentioning

confidence: 86%

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Liu

Zhang

et al. 2022

Front. Plant Sci.

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Astragalus sinicus L. (milk vetch), one of the most widespread green manure species, is widely planted in the temperate zone. Eleusine indica L. (goosegrass), a serious annual weed in the world, has evolved resistance to some non-selective herbicides. The use of milk vetch as green manure for weed control in paddy fields was proposed. Aqueous extracts of milk vetch are known to exert a different level of phytotoxicity on weeds and crops. Phytotoxic substances contained in green manure were released into the soil by leaching at the initial stage and decomposition at the later stage after the return of green manure. Considering the need for searching new sustainable strategies for weed control, a question arises: “if milk vetch could be applied in goosegrass control, which stage is the most important to control goosegrass after milk vetch returned to the field, and at the same time, will the subsequent crop, corn (Zea mays L.), be affected by the side effects from milk vetch phytotoxicity?” In this study, the potential of milk vetch for goosegrass control was approached by repeated laboratory experiments, which include the aqueous extract experiment, decomposed experiment, and pot experiment. The effects of milk vetch returning to the field on maize were simulated by a pot experiment. The extract of milk vetch could significantly inhibit the germination of goosegrass at 2% concentration, and the inhibition enhanced with the increase of concentration. In the decomposed liquid experiment, decay time within 15 days, with the increase of decay days or concentration, goosegrass inhibition effect of decomposed liquid was enhanced. When decay time was more than 15 days, the inhibition ability of the decomposed liquid to goosegrass decreased. According to the RI accumulated value, aqueous extract and decomposed liquid have a “hormesis effect” on the germination and growth of goosegrass. Pot experiment proved that the addition of 1–10% (w/w) of milk vetch significantly reduced the germination and growth of goosegrass. On the contrary, the comprehensive analysis showed that the participation of milk vetch was conducive to the growth of corn. Our results constitute evidence that the incorporation of milk vetch into the soil could be a feasible practice to reduce weed infarctions in the corn-based cropping system.

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Section: Different Ratios Of Milk Vetch Straw and Soil Treatment On P...mentioning

confidence: 86%

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Liu

Zhang

et al. 2022

Front. Plant Sci.

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“…As shown in Figure 4 a,b, the rETRmax and α values in the effluent were noticeably lower than those in the effluent after the BAF1 treatment (without the M. polymorpha filler) and BAF2. The rETRmax and α values indicate the photoacclimation state of the algae, which is often used as a response to the energy transfer and capacity of the electron transport chain in algal cells [ 28 ]. Compared to BAF1, the rETRmax and α values of the BAF2 effluent decreased to a greater extent, and the average values were 22.221 and 0.049, respectively.…”

Section: Resultsmentioning

confidence: 99%

The Treatment of Aquaculture Wastewater with Biological Aerated Filters: From the Treatment Process to the Microbial Mechanism

Ding

Meng

et al. 2023

Toxics

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Algal cell proliferation has posed significant problems for traditional water treatment facilities; these problems are attributed to surface hydrophilicity and electrostatic repulsion. Biological aerated filters (BAFs) have been extensively used in wastewater treatment to remove pollutants such as algal cells by utilizing the adsorption and separation capabilities of the filter media. In this study, a BAF was supplemented with biological filter medium (Marchantia polymorpha) to assess its effectiveness of pretreating aquaculture wastewater. In terms of process performance, steady and consistent treatment was achieved by the BAF with M. polymorpha (BAF2) under an algal cell density as high as 1.65 × 108 cell/L, with average removal rates for NH4+-N and algae cells of 74.4% and 81.9%, respectively. The photosynthetic activity parameters (rETRmax, α, Fv/Fm, and Ik) of the influent and effluent were quantitatively assessed, and M. polymorpha was found to remove algae by disrupting the photosynthetic system of the algal cells. Furthermore, the addition of the M. polymorpha filter medium enhanced the community structure of the functional microbes in the BAF system. The highest microbial community richness and diversity were observed in the BAF2. Meanwhile, M. polymorpha promoted an increase in the abundance of denitrifying bacteria, including Bdellovibrio and Pseudomonas. Overall, this work offers a unique perspective on the aquaculture wastewater pretreatment process and BAF design.

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“…External stresses, including allelopathic stressors, can alter the algal energy flux of PSII by reducing the photosynthetic efficiency [67][68][69], and by enhancing non-photochemical quenching (NPQ) [65]. The maximum quantum yield (Fv/Fm) is an effective indicator of the efficiency of photochemical stress.…”

Section: Discussionmentioning

confidence: 99%

Allelopathic Inhibition by the Bacteria Bacillus cereus BE23 on Growth and Photosynthesis of the Macroalga Ulva prolifera

Zhang

Zhao

et al. 2020

JMSE

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Bacteria-derived allelopathic effects on microalgae blooms have been studied with an aim to develop algicidal products that may have field applications. However, few such studies have been conducted on macroalgae. Therefore, a series of experiments was conducted to investigate the impacts of different concentrations of cell-free filtrate of the bacteria Bacillus cereus BE23 on Ulva prolifera. Excessive reactive oxygen species (ROS) were produced when these cells were exposed to high concentrations of filtrate relative to f/2 medium. In such conditions, the antioxidative defense system of the macroalga was activated as shown by activities of the enzymes superoxide dismutase (SOD) and catalase (CAT) and upregulation of the associated genes upMnSOD and upCAT. High concentrations of filtrate also inhibited growth of U. prolifera, and reduced chlorophyll a and b, the photosynthetic efficiency (Fv/Fm), and the electron transport rate (rETR). Non-photochemical quenching (NPQ) was also inhibited, as evidenced by the downregulation of the photoprotective genes PsbS and LhcSR. Collectively, this evidence indicates that the alteration of energy dissipation caused excess cellular ROS accumulation that further induced oxidative damage on the photosynthesis apparatus of the D1 protein. The potential allelochemicals were further isolated by five steps of extraction and insolation (solid phase–liquid phase–open column–UPLC–preHPLC) and identified as N-phenethylacetamide, cyclo (L-Pro-L-Val), and cyclo (L-Pro-L-Pro) by HR-ESI-MS and NMR spectra. The diketopiperazines derivative, cyclo (L-Pro-L-Pro), exhibited the highest inhibition on U. prolifera and may be a good candidate as an algicidal product for green algae bloom control.

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Effects of Dracontomelon duperreanum Leaf Litter on the Growth and Photosynthesis of Microcystis aeruginosa

Cited by 13 publications

References 21 publications

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

Astragalus sinicus Incorporated as Green Manure for Weed Control in Corn

The Treatment of Aquaculture Wastewater with Biological Aerated Filters: From the Treatment Process to the Microbial Mechanism

Allelopathic Inhibition by the Bacteria Bacillus cereus BE23 on Growth and Photosynthesis of the Macroalga Ulva prolifera

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