Phytohormones of microalgae: biological role and involvement in the regulation of physiological processes. Pt II. Cytokinins and gibberellins

Romanenko, K. O.; Kosakovskaya, I. V.; Romanenko, P. A.; St., Vladimirskaya

doi:10.15407/alg26.02.203

Cited by 8 publications

(4 citation statements)

References 63 publications

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“…Besides these activities, cytokinins also improve the plants' tolerance to adverse environmental conditions [10,11]. In microalgae and cyanobacteria, the role of these hormones is very similar, as they also stimulate cell division and photosynthetic activity and protect cells from environmental stress conditions [69]. For example, cytokinins from Acutodesmus obliquus, C. vulgaris and Gracilaria caudata have been associated with increased pigments' contents in these organisms, which resulted in higher photosynthetic rates and, hence, higher biomass productivities [70][71][72].…”

Section: Phytohormonesmentioning

confidence: 99%

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Gonçalves

2021

Applied Sciences

163

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The increase in worldwide population observed in the last decades has contributed to an increased demand for food supplies, which can only be attained through an improvement in agricultural productivities. Moreover, agricultural practices should become more sustainable, as the use of chemically-based fertilisers, pesticides and growth stimulants can pose serious environmental problems and lead to the scarcity of finite resources, such as phosphorus and potassium, thus increasing the fertilisers’ costs. One possible alternative for the development of a more sustainable and highly effective agriculture is the use of biologically-based compounds with known activity in crops’ nutrition, protection and growth stimulation. Among these products, microalgal and cyanobacterial biomass (or their extracts) are gaining particular attention, due to their undeniable potential as a source of essential nutrients and metabolites with different bioactivities, which can significantly improve crops’ yields. This manuscript highlights the potential of microalgae and cyanobacteria in the improvement of agricultural practices, presenting: (i) how these photosynthetic microorganisms interact with higher plants; (ii) the main bioactive compounds that can be isolated from microalgae and cyanobacteria; and (iii) how microalgae and cyanobacteria can influence plants’ growth at different levels (nutrition, protection and growth stimulation).

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Section: Phytohormonesmentioning

confidence: 99%

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Gonçalves

2021

Applied Sciences

163

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“…CK may promote microalgal cell division, enhance the accumulation of photosynthetic pigments, improve photosynthetic efficiency, and thereby promoting biomass accumulation (Mousavi et al, 2016; Piotrowska & Czerpak, 2009). Under adverse environmental conditions, CK has a protective effect on the physiological activities of microalgae, especially photosynthesis (Romanenko et al, 2016).…”

Section: Phytohormones and Their Mechanisms Of Action In Microalgaementioning

confidence: 99%

Exploration of the phytohormone regulation of energy storage compound accumulation in microalgae

Saud

Jiang

et al. 2022

Food and Energy Security

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Microalgal energy storage compounds (carbohydrates, lipids, etc.) can serve as renewable feedstocks for biofuels and biobased chemicals. Traditional methods of inducing the accumulation of energy storage compounds in microalgae, such as abiotic stress (high light intensity, high salinity, nutrient limitation, heavy metals, etc.), can affect the growth of microalgae and limit their efficient accumulation of energy storage materials. Plant hormones are a class of small molecular substances that act as chemical messengers to coordinate plant cell activities and regulate the physiological and metabolic activities of microalgae, including promoting microalgal cell proliferation, improving stress resistance, and enhancing photosynthetic activity, thereby increasing algal biomass and lipid, chlorophyll and protein content. This paper reviews the recent research progress on regulation of the accumulation of energy storage compounds in microalgae by adding exogenous plant hormones combined with abiotic stress, discusses the mechanism of plant hormones regarding the accumulation of energy storage compounds in microalgae, and proposes future research needs.

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“…The regulatory action of gibberellins (GA) has been well studied on higher plants, but data on the possible effect of these hormones on the growth of algae is still insufficient. Exogenous gibberellins significantly reduce the lag phase and stimulate cell division and growth in the exponential phase of microalgae growth, increase total biomass values, contribute to accumulation of protein, chlorophylls, and carotenoids, and alsosignificantly attenuate toxic effects of heavy metals in algae habitat (Romanenko et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Gibberellic Acid on the Production Characteristics and Biochemical Parameters of Tetraselmis Suecica in an Enrichment Culture

Kovalev¹,

Leskova²,

Mikheev³

et al. 2022

KLS

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The use of gibberellic acid as a stimulator of microalgae growth has beensubstantiatedexperimentally.This research aimed to assess the effect of exposure to a wide range of gibberellic acid concentrations on the growth dynamics ofthe microalgaTetraselmissuecicain an enrichment culture. The duration of the experiments was 14 days. It has been shown that gibberellic acid,atconcentrations of 0.39–3.20× 10−8M, stimulates algaegrowth. In this research, the exposure to gibberellic acid at concentrations of 0.39–3.20 × 10−8M was accompanied by a variation in the pattern of growth curves: the maximum number of cells was recorded on day seven of the experiment. A higher concentration of the phytohormone (3.84 × 10−8М) inhibited the increase inculture density. The growth of theT. suecicaculture in the control group was 332%;the growth of the culture exposed to gibberellic acid at a concentration of 0.39 × 10−8M was1136%. The values of the specific growth rate ofT. suecicawere estimated for different periods of cultivation. On day14 of the experiment, the biochemical composition of microalgae biomass was analyzed.According to the results, gibberellic acid stimulated the accumulation of carbohydrates, proteins, and chlorophyll. Nevertheless, the phytohormone had no effect on lipidaccumulation. An assumption was made thatexposure to low concentrations of phytohormone stimulates the growth of microalgae by reducing the lag phase of growth. Keywords: gibberellic acid, microalga, cultivation, lipids, carbohydrates, proteins

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Phytohormones of microalgae: biological role and involvement in the regulation of physiological processes. Pt II. Cytokinins and gibberellins

Cited by 8 publications

References 63 publications

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

The Use of Microalgae and Cyanobacteria in the Improvement of Agricultural Practices: A Review on Their Biofertilising, Biostimulating and Biopesticide Roles

Exploration of the phytohormone regulation of energy storage compound accumulation in microalgae

The Effect of Gibberellic Acid on the Production Characteristics and Biochemical Parameters of Tetraselmis Suecica in an Enrichment Culture

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