Synergistic effect of auxins and brassinosteroids on the growth and regulation of metabolite content in the green alga Chlorella vulgaris (Trebouxiophyceae)

Bajguz, Andrzej; Piotrowska‐Niczyporuk, Alicja

doi:10.1016/j.plaphy.2013.08.003

Cited by 96 publications

(33 citation statements)

References 44 publications

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“…Soluble-protein content in plants, an important indicator of reversible and irreversible changes in metabolism, is known to respond to a wide variety of phytohormones (Bajguz and Piotrowska-Niczyporuk, 2013). In the present study, exogenous application of SA or Kin resulted in an increase in the level of total soluble protein content in stressed sesame as compared to the control as shown in Table 3.…”

Section: Total Soluble Protein Contents: Results Insupporting

confidence: 52%

Induction of Drought Stress Resistance in Sesame (Sesamum indicum L.) Plant by Salicylic Acid and Kinetin

Hussein¹,

Amin²,

Azab³

et al. 2015

J. of Plant Sciences

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Sesame (Sesamum indicum L., family Pedaliaceae) is considered as one of the most important oil crops in Egypt due to its high seed oil content. This study was conducted to study the influence of exogenously applied phytohormones (Salicylic Acid (SA) and kinetin (Kin) on growth and physiological behavior in drought stressed sesame plants. The experiment was designed into 4 groups, control, drought stress, drought treated with SA (0.1, 0.5 and 1 mM) and drought treated with Kin (0.05, 0.1 and 0.5 mM). It was found that drought stress adversely affected all growth parameters of sesame including plant height, fresh weight, dry weight, number of leaves and leaf area. Drought stress caused significant decrease in endogenous phytohormones (SA and Kin), while on treatment of drought stressed sesame plants with SA and Kin increased level of endogenous SA and Kin. On the other hand, drought stress caused significant increase in total soluble protein, poly peptide bands, proline, moreover on treatments with SA and Kin improved all previous substances in drought stressed sesame plants. The SDS-PAGE detection of protein indicated some changes in amount and number of protein bands and also new protein bands appeared in both stressed and phytohormonal treated plants. Therefore, exogenous application of drought stressed sesame plants with salicylic acid or kinetin may induce resistance to drought stress by enhancement of growth and various physiological processes which are negatively affected by drought stress.

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Section: Total Soluble Protein Contents: Results Insupporting

confidence: 52%

Induction of Drought Stress Resistance in Sesame (Sesamum indicum L.) Plant by Salicylic Acid and Kinetin

Hussein¹,

Amin²,

Azab³

et al. 2015

J. of Plant Sciences

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“…This was observed by de-Bashan et al in which Azospirillium secreted IAA, thereby promoting growth in Chlorella vulgaris [14]. Likewise, Bajguz et al showed that other phytohormones such as indole-3 propionic and indole-3 butyric acid had similar growth-promoting effects on autotrophic C. vulgaris cultures, particularly when supplied with brassinosteroids [34]. In addition to hormones, bacteria can synthesize vitamins that may confer growth advantages to algae.…”

Section: Discussionmentioning

confidence: 79%

Effects of Escherichia coli on Mixotrophic Growth of Chlorella minutissima and Production of Biofuel Precursors

Higgins

VanderGheynst

2014

PLoS ONE

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Chlorella minutissima was co-cultured with Escherichia coli in airlift reactors under mixotrophic conditions (glucose, glycerol, and acetate substrates) to determine possible effects of bacterial contamination on algal biofuel production. It was hypothesized that E. coli would compete with C. minutissima for nutrients, displacing algal biomass. However, C. minutissima grew more rapidly and to higher densities in the presence of E. coli, suggesting a symbiotic relationship between the organisms. At an initial 1% substrate concentration, the co-culture produced 200-587% more algal biomass than the axenic C. minutissima cultures. Co-cultures grown on 1% substrate consumed 23–737% more of the available carbon substrate than the sum of substrate consumed by E. coli and C. minutissima alone. At 1% substrate, total lipid and starch productivity were elevated in co-cultures compared to axenic cultures indicating that bacterial contamination was not detrimental to the production of biofuel precursors in this specific case. Bio-fouling of the reactors observed in co-cultures and acid formation in all mixotrophic cultures, however, could present challenges for scale-up.

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“…It was further supposed that the combinations from different phytohormone families led to more biomass productivity than those from the same families [46]. Significant increases in algal growth and in the levels of biochemical parameters, including chlorophylls, proteins, and monosaccharides were found with the combined treatments of brassinolide (BL) + IAA [47] and BL + trans-zeatin [48]. Similar to this, combined phytohormones have been observed to stimulate biomass and lipid yields of two freshwater microalgae, implying that proton pumps and an anti-oxidative mechanism were activated by the stimulants [49,102].…”

Section: The Crosstalk For Different Phytohormonesmentioning

confidence: 99%

Phytohormones and Effects on Growth and Metabolites of Microalgae: A Review

et al. 2018

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Microalgae cultivation is booming in agriculture, aquaculture, and bioenergy sectors. A wide range of bioactive compounds with attractive properties can be produced with microalgae, including pigments, vitamins, proteins, carbohydrates, and lipids. The biofuel yields from microalgae can exceed the yields obtained with energy crops by 10-100 times. Therefore, such cultivation is promising for the regulation of the biosynthesis of microalagae with phytohormones, which can enhance the production of high-valued bioproducts. This review reports the effect of auxins, abscisic acid, cytokinins, gibberellins, and ethylene on microalgal growth and metabolites, as well as the crosstalk of different phytohormones. The use of phytohormones is also promising because it can also reduce the inputs necessary to grow the selected microalgae and maximize the yields.

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Synergistic effect of auxins and brassinosteroids on the growth and regulation of metabolite content in the green alga Chlorella vulgaris (Trebouxiophyceae)

Cited by 96 publications

References 44 publications

Induction of Drought Stress Resistance in Sesame (Sesamum indicum L.) Plant by Salicylic Acid and Kinetin

Induction of Drought Stress Resistance in Sesame (Sesamum indicum L.) Plant by Salicylic Acid and Kinetin

Effects of Escherichia coli on Mixotrophic Growth of Chlorella minutissima and Production of Biofuel Precursors

Phytohormones and Effects on Growth and Metabolites of Microalgae: A Review

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