Scholarlink

<p>Microalgae, phototrophic organisms, have been used for environmental bioremediation, including wastewater treatment. Algae have been tested for promotion of plant growth. However, little has been known about re-using algae from wastewater treatment facilities as biostimulants for non-edible crops. This study assessed the beneficial effects of algal pallets on cotton crops. The biochemical and nutrient compositions of microalgae biomass (AB) were identified where essential nutrients, endogenous phytohormone content (salicylic acids &gt; auxins &gt; gibberellins), and biochemical content (crude protein &gt; fat &gt; fiber). Different AB concentrations were formulated to test the benefits for cotton (<i>Gossypium hirsutum</i>) plant growth and compared them with commercial fertilizer and untreated controls. AB and its combination (AB + NPK) significantly increased shoot length, root length, shoot biomass, and root biomass compared to the control. Oxidative stress enzymes and biochemicals significantly increased with catalase (~ 1.8-fold), superoxide dismutase (~ 2.3-fold), and phenolic content (1.2-fold) higher in AB-treated plants compared to control. Polyphenol oxidase and ascorbate peroxidase were not active in the treatments. Dehydration (dehydration responsive element binding-<i>GhDREB</i> and 9-Cis-epoxycarotenoid dioxygenase-<i>GhNCED1</i>) and stress (heat shock protein gene-<i>GhHSP101</i>) responses genes were respectively 2.2, ~ 2.8, and 2.4 times up-regulated in cotton plants during AB treatments comparing controls. In conclusion, the current findings show that algae, after wastewater treatment, could be recycled and reused to improve plant growth and help reduce the negative impact of synthetic fertilizers.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Algal Biomass from Wastewater Treatment Stimulates Cotton (Gossypium hirsutum) Growth and Gene Regulation

  • 期刊论文

  • 发表日期：

    2025年5月16日

查看全文
  • Anh Quynh Nguyen,
  • Waqar Ahmad,
  • Ram Ray,
  • Xiaonan Shan,
  • Abdul Latif Khan,
  • Venkatesh Balan

摘要

Microalgae, phototrophic organisms, have been used for environmental bioremediation, including wastewater treatment. Algae have been tested for promotion of plant growth. However, little has been known about re-using algae from wastewater treatment facilities as biostimulants for non-edible crops. This study assessed the beneficial effects of algal pallets on cotton crops. The biochemical and nutrient compositions of microalgae biomass (AB) were identified where essential nutrients, endogenous phytohormone content (salicylic acids > auxins > gibberellins), and biochemical content (crude protein > fat > fiber). Different AB concentrations were formulated to test the benefits for cotton (Gossypium hirsutum) plant growth and compared them with commercial fertilizer and untreated controls. AB and its combination (AB + NPK) significantly increased shoot length, root length, shoot biomass, and root biomass compared to the control. Oxidative stress enzymes and biochemicals significantly increased with catalase (~ 1.8-fold), superoxide dismutase (~ 2.3-fold), and phenolic content (1.2-fold) higher in AB-treated plants compared to control. Polyphenol oxidase and ascorbate peroxidase were not active in the treatments. Dehydration (dehydration responsive element binding-GhDREB and 9-Cis-epoxycarotenoid dioxygenase-GhNCED1) and stress (heat shock protein gene-GhHSP101) responses genes were respectively 2.2, ~ 2.8, and 2.4 times up-regulated in cotton plants during AB treatments comparing controls. In conclusion, the current findings show that algae, after wastewater treatment, could be recycled and reused to improve plant growth and help reduce the negative impact of synthetic fertilizers.