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Combined effect of exogenous phytohormones on biomass and lipid production in Acutodesmus obliquus under nitrogen limitation

机译:氮限制条件下外源植物激素对斜纹螺biomass生物量和脂质产生的联合影响

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摘要

The use of phytohormones in microalgal biofuel production is gaining interest due to their substantial effect on biomass and lipid enrichment under standard and nitrogen-limited conditions. In the present study, the collaborative effect of combination of selected phytohormones viz. zeatin (Z), indole acetic acid (IAA), and gibberellic acid (GA) was studied to optimize biomass and lipid production in microalga Acutodesmus obliquus under nitrogen-limitation using response surface methodology (RSM). Significantly higher biomass and lipid productivity was obtained with the supplementation of combination of Z (0.5 mg L-1), IAA (1.0 mg L-(1)), and GA (5.0 mg L-1) under nitrogen-limitation with 49.07% and 77.20% increase respectively as compared to optimized nitrogen control (ON). Zeatin was found to be the most significantly influencing phytohormone followed by GA in RSM data analysis. Present study elucidated the synergistic effect of combination of exogenous phytohormones in enhancing biomass and lipid productivity under nitrogen-limitation for microalgal biofuel production.
机译:由于植物激素在标准和氮限制条件下对生物量和脂质富集的实质影响,因此在微藻生物燃料生产中使用植物激素引起了人们的兴趣。在本研究中,所选植物激素组合的协同作用即。研究人员使用响应表面方法(RSM)研究了玉米蛋白(Z),吲哚乙酸(IAA)和赤霉素(GA)在氮限制下优化微藻斜纹螺的生物量和脂质生产。在氮限制下,添加Z(0.5 mg L-1),IAA(1.0 mg L-(1))和GA(5.0 mg L-1)的组合可显着提高生物量和脂质生产率,达到49.07%与优化氮控制(ON)相比,分别增加了77.20%和77.20%。在RSM数据分析中,发现玉米素是影响最显着的植物激素,其次是GA。本研究阐明了氮限制下外源植物激素组合在提高生物藻类生产微藻生物燃料中的协同作用。

著录项

  • 来源
    《Energy Conversion & Management》 |2018年第7期|522-528|共7页
  • 作者单位

    Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa;

    Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa;

    Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa;

    Durban Univ Technol, Inst Water & Wastewater Technol, POB 1334, ZA-4000 Durban, South Africa;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microalgae; Nitrogen stress; Biomass; Lipid; Phytohormone;

    机译:微藻;氮胁迫;生物量;脂质;植物激素;

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