Boron accumulation by Lemna minor L. under salt stress

Gu, Wentao; Zheng, Dan; Li, Jia; Jiang, Hongru; Zhang, Qian

doi:10.1038/s41598-018-27343-y

Cited by 21 publications

(13 citation statements)

References 38 publications

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“…Decolorization experiments were conducted in a glass container containing 50 mL of MB at 50 mg/L (Pego et al., 2017). Two grams of L. minor (Liu et al., 2018) were exposed to MB-contaminated water at room temperature (20 °C–25 °C) under white lamp light at the approximation of 10,000–25,000 lux (Al-Baldawi et al., 2018). The reactor was designed to replicate the floating treatment wetland under batch system reactor (Lucke et al., 2019).…”

Section: Methodsmentioning

confidence: 99%

Phytoremediation of methylene blue using duckweed (Lemna minor)

Imron

Kurniawan²,

Soegianto

et al. 2019

Heliyon

103

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Azo dyes are the largest class of synthetic dyes and are utilized in several industries. Effluents containing dyes are released to the environment and pose harm to humans who might be exposed to these contaminants. This study aims to investigate the removal of methylene blue (MB) dye using duckweed (Lemna minor). L. minor (2 g) was exposed into 50 mg/L of MB dyes for 24 h. The absorbance values were measured at 0, 0.5, 1, 2, 3, 4, 5, 6, and 24 h with a maximum wavelength of 665 nm. The dye removal percentage and relative growth rate of L. minor during exposure to MB were observed. The removal percentage was 80.56 AE 0.44% for 24 h with a relative growth rate of 0.006/h. L. minor has potential as a phytoremediation agent to remove dyes from wastewater.

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Section: Methodsmentioning

confidence: 99%

Phytoremediation of methylene blue using duckweed (Lemna minor)

Imron

Kurniawan²,

Soegianto

et al. 2019

Heliyon

103

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“…The uptake and adaptability of L. minuta has led to its use as a wastewater detoxifying/phytoremediation species (Fernández et al, 2020). Wastewaters are often contaminated with a variety of toxic compounds yet the exact mechanisms of plants ability to adapt to these compounds, including high levels of essential elements and heavy metals, remains unclear (Frick, 1985; Davis et al, 2002; Del-Campo Marín and Oron, 2007; Gür et al, 2016; Liu et al, 2018; Türker et al, 2019). We find increased expression of BORON TRANSPORTER 4 ( BOR4 ) in the mesophyll and replicating cells (Fig.…”

Section: Resultsmentioning

confidence: 99%

Single nuclei transcriptome of the Lesser Duckweed Lemna minuta reveals cell trajectories for an entire plant

Novotny

Hartwick

et al. 2021

Preprint

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The ability to trace every cell in some model organisms has led to the fundamental understanding of development and cellular function. However, in plants the complexity of cell number, organ size and developmental times makes this a challenge even in the diminutive model plant Arabidopsis thaliana. Here we develop the Lesser Duckweed Lemna minuta as a model with a reduced body plan, small genome size and clonal growth pattern that enables simultaneous tracing of cells from the entire plant over the complete developmental cycle. We generated a chromosome-resolved genome for the 360 megabase genome and defined the growth trajectory of the entire plant with single nuclei RNA sequencing. The L. minuta gene complement represents a primarily non-redundant set with only the ancient tau whole genome duplication shared with all monocots, and paralog expansion as a result of tandem duplications related to phytoremediation. Thirteen distinct cell types representing meristem, the leaf-stem fusion called a frond, and root-like tissues were defined using gene orthology with single cell expression from model plants, gene ontology categories, and cell trajectory analysis. Dividing meristem cells give rise to two main branches of root-transition and mesophyll cells, which then give rise to terminally differentiated parenchyma, epidermal and root cells. Mesophyll tissues express high levels of elemental transport genes consistent with this tissue playing a role in L. minuta wastewater detoxification. The L. minuta genome and cell map provide a paradigm to decipher developmental genes and pathways for an entire plant.

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“…Therefore, when L. minor is used to remove N and P from wastewater, salinities below 75 mM NaCl is required [7]. Salt stress also inhibited the removal of boron from water by L. minor , and NaCl salinity below 100 mM is suggested when L. minor is used in boron removal from wastewater [45]. Sree et al (2015) compared salt stress tolerance of 34 strains of duckweeds from across all 5 genera and 13 species, and found large interspecific and intraspecific variations in salt tolerance [9].…”

Section: Discussionmentioning

confidence: 99%

Physiological and Transcriptomic Analysis Reveals Distorted Ion Homeostasis and Responses in the Freshwater Plant Spirodela polyrhiza L. under Salt Stress

Ding

Sun

et al. 2019

Genes

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Duckweeds are a family of freshwater angiosperms with morphology reduced to fronds and propagation by vegetative budding. Unlike other angiosperm plants such as Arabidopsis and rice that have physical barriers between their photosynthetic organs and soils, the photosynthetic organs of duckweeds face directly to their nutrient suppliers (waters), therefore, their responses to salinity may be distinct. In this research, we found that the duckweed Spirodela polyrhiza L. accumulated high content of sodium and reduced potassium and calcium contents in large amounts under salt stress. Fresh weight, Rubisco and AGPase activities, and starch content were significantly decreaseded in the first day but recovered gradually in the following days and accumulated more starch than control from Day 3 to Day 5 when treated with 100 mM and 150 mM NaCl. A total of 2156 differentially expressed genes were identified. Overall, the genes related to ethylene metabolism, major CHO degradation, lipid degradation, N-metabolism, secondary metabolism of flavonoids, and abiotic stress were significantly increased, while those involved in cell cycle and organization, cell wall, mitochondrial electron transport of ATP synthesis, light reaction of photosynthesis, auxin metabolism, and tetrapyrrole synthesis were greatly inhibited. Moreover, salt stress also significantly influenced the expression of transcription factors that are mainly involved in abiotic stress and cell differentiation. However, most of the osmosensing calcium antiporters (OSCA) and the potassium inward channels were downregulated, Na+/H+ antiporters (SOS1 and NHX) and a Na+/Ca2+ exchanger were slightly upregulated, but most of them did not respond significantly to salt stress. These results indicated that the ion homeostasis was strongly disturbed. Finally, the shared and distinct regulatory networks of salt stress responses between duckweeds and other plants were intensively discussed. Taken together, these findings provide novel insights into the underlying mechanisms of salt stress response in duckweeds, and can be served as a useful foundation for salt tolerance improvement of duckweeds for the application in salinity conditions.

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Boron accumulation by Lemna minor L. under salt stress

Cited by 21 publications

References 38 publications

Phytoremediation of methylene blue using duckweed (Lemna minor)

Phytoremediation of methylene blue using duckweed (Lemna minor)

Single nuclei transcriptome of the Lesser Duckweed Lemna minuta reveals cell trajectories for an entire plant

Physiological and Transcriptomic Analysis Reveals Distorted Ion Homeostasis and Responses in the Freshwater Plant Spirodela polyrhiza L. under Salt Stress

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