Nitrogen, phosphorus and high CO2 modulate photosynthesis, biomass and lipid production in the green alga Chlorella vulgaris

Kumari, Kanchan; Samantaray, Shilalipi; Tripathy, Baishnab C.

doi:10.1007/s11120-021-00828-0

Cited by 21 publications

(8 citation statements)

References 73 publications

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“…It has been suggested that the modification of the root structure of a cucumber plant is related to the phytohormone indoleacetic acid (IAA) produced by S. meliloti, A. radioresistens, and P. paralactis [11,14,27]. In addition, it has been reported that S. meliloti and A. radioresistens possess the ability to fix nitrogen and solubilize phosphate, resulting in an increase on the number of late-stage roots and root hairs, since these elements are essential for the plant to increase photosynthetic pigments and proteins, which improves photosynthetic activity and rate, having a positive effect on plant development and a greater accumulation of biomass [28,29]. Furthermore, it has been pointed out that IAA is associated with cell division and differentiation, which improves the structure of the root system [30][31][32].…”

Section: Discussionmentioning

confidence: 99%

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Zapata-Sifuentes

Hernández-Montiel²,

Sáenz‐Mata

et al. 2022

Plants

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Cucumber fruit is rich in fiber, carbohydrates, protein, magnesium, iron, vitamin B, vitamin C, flavonoids, phenolic compounds, and antioxidants. Agrochemical-based production of cucumber has tripled yields; however, excessive synthetic fertilization has caused problems in the accumulation of salts in the soil and has increased production costs. The objective of this study was to evaluate the effect of three strains of plant growth-promoting rhizobacteria (PGPR) on cucumber fruit growth and quality under greenhouse conditions. The rhizobacteria Pseudomonas paralactis (KBendo6p7), Sinorhizobium meliloti (KBecto9p6), and Acinetobacter radioresistens (KBendo3p1) was adjusted to 1 × 108 CFU mL−1. The results indicated that the inoculation with PGPR improved plant height, stem diameter, root length, secondary roots, biomass, fruit size, fruit diameter, and yield, as well as nutraceutical quality and antioxidant capacity, significantly increasing the response of plants inoculated with A.radioresistens and S.meliloti in comparison to the control. In sum, our findings showed the potential functions of the use of beneficial bacteria such as PGPR for crop production to reduce costs, decrease pollution, and achieve world food safety and security.

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Section: Discussionmentioning

confidence: 99%

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Zapata-Sifuentes

Hernández-Montiel²,

Sáenz‐Mata

et al. 2022

Plants

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“…When Scenedesmus acuminatus grew under nitrogen-limited conditions, oil productivity was enhanced (Zhang et al, 2021). Nitrogen limitation increased oil content in Chlorella vulgaris, which might be related to the upregulation of mRNA levels of several oil biosynthesis genes (Kumari et al, 2021). Our previous study also showed that nitrogen limitation could induce an increase in oil content from 25% to 40% in D. parva .…”

Section: Introductionmentioning

confidence: 79%

“…Biomass productivity, oil content, and energy-intensive harvesting were the major constraints for biodiesel production from microalgae on a large scale (Shahid et al, 2020). Nitrogen limitation has been widely used to increase oil content in microalgae (Kumari et al, 2021;Zhang et al, 2021). When Scenedesmus acuminatus grew under nitrogen-limited conditions, oil productivity was enhanced (Zhang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Identification of Interacting Proteins of Transcription Factor DpAP2 Related to Carotenoid Biosynthesis From Marine Microalga Dunaliella parva

Shang

Pang²,

Zhang³

et al. 2022

Front. Mar. Sci.

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Carotenoids are widely distributed and structurally diverse, which have significant roles in the photosynthesis of plants. As a precursor of vitamin A, carotenoids are also antioxidants that reduce various chronic diseases, which are beneficial for human health. Currently, the existing studies concerned the biological roles of APETALA2 (AP2)/ethylene-responsive factor (ERF) genes originated from higher plants. The AP2 superfamily of the transcriptional regulator was identified in higher plants, which was related to growth, development, carotenoid metabolism, and responses to various stresses. However, the regulatory mechanisms of the AP2-modulating carotenoid metabolism have not been reported in microalgae, which remain to be elucidated. Dunaliella parva AP2 (i.e., DpAP2), an important transcription factor, promotes carotenoid accumulation by binding to the promoter of target gene. Here, we identified an important AP2/ERF transcription factor, DpAP2, which could promote carotenoid accumulation by binding to the promoter of target gene. To demonstrate the function of DpAP2, the interacting proteins were identified by the yeast two-hybrid system. The results showed that DpAP2 could interact with three proteins with different activities (DNA-binding transcription factor activity, protein kinase activity, and alpha-D-phosphohexomutase activity); these proteins may be associated with multiple biological processes. This paper laid a good foundation for a deep understanding of the regulatory mechanisms of DpAP2 and genetic engineering breeding in D. parva.

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“…На хімічний склад мікроводоростей впливає інтенсивність освітлення, температура і доступність поживних речовин [33]. Наприклад, за малої кількості джерел нітрогену в середовищі мікроводорості активніше продукують запасні речовини -вуглеводи та ліпіди [15,23,31], низька концентрація CO 2 пригнічує синтез жирних кислот, тоді як висока сприяє їхньому накопиченню, незважаючи на гальмування десатурації та подовження вуглецевого ланцюга [51]. Було досліджено вихідну щільність клітин: у діапазоні від 1,775 × 10 4 до 10 5 клітин/мл або 0,15 г/л для продуктивного поглинання газових викидів [32,48].…”

Section: ключові слова: газові викиди мікроводорості біосеквестрація ...unclassified

The effect of gas emissions components on the growth of Chlorella vulgaris microalgae

Vdovychenko¹,

Golub²

2022

VLUBS

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The annual growth of environment anthropogenic impact, in particular, the increase of gaseous emissions amount leads to the need of their disposal. A promising solution for this problem may be the use of microalgae to absorb carbon dioxide and oxides of nitrogen and sulfur. It is important to determine the cultivation conditions for further establishment of rational parameters for the gaseous emissions disposal, which will increase the profitability of the process, reduce environmental pollution and obtain biomass for further use. The aim of the work is to analyze studies of the gaseous components impact on the growth and development of microalgae Chlorella vulgaris. The task is to determine the effect of oxides of carbon, nitrogen, sulfur and gaseous emissions on the growth and development of microalgae Chlorella vulgaris. The typical composition of gaseous emissions from a coal-fired thermal power plant based on water vapor, oxides of carbon, nitrogen, and sulfur, which can be assimilated by microalgae cells, is considered. Carbon dioxide in this mixture is 12±2 %, which is a rational concentration for growing biomass of adapted strains. However, when applying a high concentration of CO2 to the culture medium, it is necessary to stabilize the pH, because increasing the carbon dioxide content in the culture medium leads to acidification, while the consumption of CO2 by microalgae in photosynthesis increases the pH value. It is determined that nitrogen oxides, the main part of which is NO, in concentrations up to 100 ppm contribute to the accumulation of biomass and synthesis of nutrients in cells. It is necessary to reduce the concentration of sulfur oxides to 60–100 ppm and avoid their gradual accumulation, as this leads to acidification of the environment and cell death. When using Chlorella vulgaris to purify biogas from CO2 and H2S, the concentration of hydrogen sulfide should not exceed 100 ppm to eliminate its inhibitory effect on cell growth.

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Nitrogen, phosphorus and high CO2 modulate photosynthesis, biomass and lipid production in the green alga Chlorella vulgaris

Cited by 21 publications

References 73 publications

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Plant Growth-Promoting Rhizobacteria Improve Growth and Fruit Quality of Cucumber under Greenhouse Conditions

Identification of Interacting Proteins of Transcription Factor DpAP2 Related to Carotenoid Biosynthesis From Marine Microalga Dunaliella parva

The effect of gas emissions components on the growth of Chlorella vulgaris microalgae

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