Resource utilization of microalgae from biological soil crusts: Biodiesel production associated with desertification control

Lan, Shubin; Zhang, Qingyi; He, Qiaoning; Yang, Haijian; Hu, Chunxiang

doi:10.1016/j.biombioe.2018.06.016

Cited by 9 publications

(4 citation statements)

References 35 publications

(81 reference statements)

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“…Microalgae, especially cyanobacteria, possess many qualities that are advantageous for biofuel production, including: (1) a higher growth rate and more rapid cell division, compared with higher plants; (2) the ability to survive and grow in areas undergoing desertification [4]; (3) an enhanced ability to utilize CO 2 in photosynthesis, which leads to a suitable lipid content; (4) minimal nutritional requirements, allowing them to grow on wastewater [5]; (5) the ability to easily adapt to different environmental conditions; and (6) the availability of genomic sequences that aid recombinant DNA technology and the application of genetic engineering [6].…”

Section: Introductionmentioning

confidence: 99%

Recombinant overexpression of the Escherichia coli acetyl‐CoA carboxylase gene in Synechocystis sp. boosts lipid production

et al. 2021

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Microalgae have received continued attention as a potential source for biofuel production. However, the lack of suitable strains that provide a lipid‐rich biomass and tolerate harsh condition inhibits their industrial application. This report describes an effort to transform Synechocystis sp. with genes encoding acetyl‐CoA carboxylase (ACC), a key regulatory enzyme in the lipogenesis pathway, from the white mustard plant (Sinapis alba) and the bacterium Escherichia coli DH5α using chitosan nanoparticles. Although a recombinant plasmid encoding S. alba ACC failed to express, successful transformation was achieved with a recombinant plasmid encoding E. coli DH5α ACC. The successful transformant, Synechocystis sp. PAK13, exhibited increased ACC expression compared with its wild‐type parent (11.8 vs. 7.2 ng), which significantly increased its lipid content (by 3.6‐fold). Synechocystis sp. PAK13 also exhibited a significant (20%) reduction in photosynthetic pigments, a 1.52‐fold higher glucose content and a 3.5‐fold lower sucrose content than the wild‐type. In conclusion, this report introduces a useful strategy to overexpress the ACC gene in microalgae, creating strains with improved lipid production that are suited to industrial applications.

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Section: Introductionmentioning

confidence: 99%

Recombinant overexpression of the Escherichia coli acetyl‐CoA carboxylase gene in Synechocystis sp. boosts lipid production

et al. 2021

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“…5 To reduce the negative effects of desertification on the environment and human beings, the treatment of desertification is attracting increasing attention. 6,7 Water eutrophication is another important and widely concerning environmental issue worldwide that results in frequent algal blooms. 8−10 In summer, many aquatic cyanobacteria (AC) grow rapidly in water, causing an increase in chemical oxygen demand (COD) and a decrease in water quality.…”

Section: ■ Introductionmentioning

confidence: 99%

“…During the past several decades, because of natural factors such as climate change and human activities, including excessive logging, grazing, reclamation, and mining, desertification has become one of the most severe environmental problems worldwide. , Desertification poses serious threats to human beings, such as living area reduction, farmland degradation, and sandstorms . To reduce the negative effects of desertification on the environment and human beings, the treatment of desertification is attracting increasing attention. , …”

Section: Introductionmentioning

confidence: 99%

Inhibiting Desertification Using Aquatic Cyanobacteria Assisted by a Nanocomposite

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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Desertification and water body eutrophication are two severe environmental problems worldwide. To alleviate these two problems simultaneously, a new idea, introducing aquatic cyanobacteria (AC) from Lake Chaohu to the surface of the Tengger Desert to encourage the growth of biological soil crusts, was proposed. A networkstructured nanocomposite (SXA) consisting of sodium polyacrylate (SP), xanthan gum (XG), and attapulgite (ATP) was also fabricated. The SXA showed high water-retention ability, viscosity, and biosafety and could provide a suitable microenvironment for AC and desert cyanobacteria (DC) growth. It was found that the combination of AC and SXA effectively increased sand nutrient levels, facilitating the growth of DC and biological soil crusts. Importantly, the resultant biological soil crusts maintained stability for at least 210 days and played a key role in stabilizing the sand surface. Therefore, this work provides a novel technology not only for desert immobilization but also for the utilization of aquatic blooms.

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“…In 1977, the United Nations Conference on Desertification defined desertification as a situation in which the biological potential of the land is reduced or destructed and ultimately leads to a desert-like landscape. This definition has been widely accepted and applied over the past two decades (Lan et al, 2018). In 1991, aiming at the definition in 1997, the United Nations Environment Program did not mention the possible areas of desertification and their causes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation algorithm of alhagi sparsifolia desertification control under different irrigation amounts

Li¹,

Liu²,

Zhang

2021

Earth sci. res. j.

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Desertification control is an important issue that must be considered in modern society. In order to effectively improve the accuracy and practicability of the evaluation algorithm of desertification control effect, the Alhagi sparsifolia index under different irrigation amount was taken as the research object, and the evaluation algorithm of desertification control effect was proposed. In the “vegetation-sandstorm-soil” index system, a number of indexes were selected according to the core environmental parameters of Alhagi sparsifolia and grassland desertification. And the analytic hierarchy process, remote sensing, geographic information system, and landscape technology were used to assign index weights of desertification control capacity, which were calculated by multiple discriminant matrices. Finally, the data regression analysis was performed based on remote sensing and computer image information screening and processing to determine the final evaluation results. The experimental data show that the true positive rate of the algorithm in this paper is between 160 and 200, which is within a large range of advantages, indicating that the overall evaluation accuracy of the algorithm is high and the evaluation effect is perfect.

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Resource utilization of microalgae from biological soil crusts: Biodiesel production associated with desertification control

Cited by 9 publications

References 35 publications

Recombinant overexpression of the Escherichia coli acetyl‐CoA carboxylase gene in Synechocystis sp. boosts lipid production

Recombinant overexpression of the Escherichia coli acetyl‐CoA carboxylase gene in Synechocystis sp. boosts lipid production

Inhibiting Desertification Using Aquatic Cyanobacteria Assisted by a Nanocomposite

Evaluation algorithm of alhagi sparsifolia desertification control under different irrigation amounts

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