Scholarlink

<p>Light quality is a critical factor influencing plant morphogenesis in tissue culture. In-vitro culture environments benefit from using light-emitting diodes (LEDs), which offer customizable light spectra tailored to specific plant needs and are more cost-effective than fluorescent lamps. However, the impact of the light spectrum on the morphogenesis of <i>Colletia paradoxa</i> remains largely unexplored. This study aimed to evaluate the effects of different LED lighting systems on the photosynthetic and antioxidant metabolism of <i>C. paradoxa</i> cultivated in-vitro. We compared the morphogenic responses, photosynthetic pigment content, chlorophyll <i>a</i> fluorescence, and antioxidant enzyme activities in explants grown under monochromatic white, red, and blue LEDs and a combination of red and blue LEDs (1:1 ratio). The red and blue LED mixture (1:1) was found to be the most favorable for micropropagation, as it resulted in the highest number (5.44) and average length of shoots (4.13&#xa0;cm), levels of chlorophyll pigments, optimal efficiency in light energy absorption, conservation, and transfer within the photosynthetic complexes, and the lowest levels of antioxidant enzyme activity. These findings suggest reduced reactive oxygen species production and minimal light-induced stress in <i>C. paradoxa</i> shoots under this lighting condition. Therefore, the red and blue LED combination is recommended to develop an efficient micropropagation protocol for <i>C. paradoxa</i>.</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

Light quality affects photosynthesis and antioxidant metabolism of Colletia paradoxa cultivated in-vitro

  • 期刊论文

  • 发表日期：

    2025年4月7日

查看全文
  • Rhuann Carlo Viero Taques,
  • Rafaela Cristina Tome Souza,
  • Patricia Carla Giloni-Lima,
  • Vanderlei Aparecido de Lima,
  • Luciana Lopes Fortes Ribas

摘要

Light quality is a critical factor influencing plant morphogenesis in tissue culture. In-vitro culture environments benefit from using light-emitting diodes (LEDs), which offer customizable light spectra tailored to specific plant needs and are more cost-effective than fluorescent lamps. However, the impact of the light spectrum on the morphogenesis of Colletia paradoxa remains largely unexplored. This study aimed to evaluate the effects of different LED lighting systems on the photosynthetic and antioxidant metabolism of C. paradoxa cultivated in-vitro. We compared the morphogenic responses, photosynthetic pigment content, chlorophyll a fluorescence, and antioxidant enzyme activities in explants grown under monochromatic white, red, and blue LEDs and a combination of red and blue LEDs (1:1 ratio). The red and blue LED mixture (1:1) was found to be the most favorable for micropropagation, as it resulted in the highest number (5.44) and average length of shoots (4.13 cm), levels of chlorophyll pigments, optimal efficiency in light energy absorption, conservation, and transfer within the photosynthetic complexes, and the lowest levels of antioxidant enzyme activity. These findings suggest reduced reactive oxygen species production and minimal light-induced stress in C. paradoxa shoots under this lighting condition. Therefore, the red and blue LED combination is recommended to develop an efficient micropropagation protocol for C. paradoxa.