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<p>Light quality is a critical factor influencing plant growth and development in tissue culture, yet it is often overlooked in favor of light intensity and energy efficiency. With the increased adoption of light emitting diode (LED) illumination systems to replace traditional fluorescent lamps, understanding the impact of spectral composition on in vitro plant responses is becoming essential. This study investigates morphological and developmental changes observed across multiple crop species after transitioning to full-spectrum LED strips in tissue culture conditions. We found that altered spectral profiles triggered stress responses including discoloration, photobleaching, hyperhydricity, and abnormal developmental responses. While some species, such as apple and kalanchoe, showed improvement under shading and lower light intensity, cucurbits and tomato remained sensitive, exhibiting persistent physiological aberrations. These results emphasize that successful implementation of LED lighting requires tailoring spectral quality to the specific needs of each species and its downstream applications. We recommend that spectral validation become a routine part of tissue culture protocol development to ensure reproducible results in plant propagation, regeneration, and transformation.</p>

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Species-specific responses to LED lighting in plant tissue culture

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • N. C. Surakshitha,
  • Betty Henken,
  • Iris Tinnenbroek,
  • Marjan Bergervoet,
  • Jan Schaart,
  • Martina Juranić

摘要

Light quality is a critical factor influencing plant growth and development in tissue culture, yet it is often overlooked in favor of light intensity and energy efficiency. With the increased adoption of light emitting diode (LED) illumination systems to replace traditional fluorescent lamps, understanding the impact of spectral composition on in vitro plant responses is becoming essential. This study investigates morphological and developmental changes observed across multiple crop species after transitioning to full-spectrum LED strips in tissue culture conditions. We found that altered spectral profiles triggered stress responses including discoloration, photobleaching, hyperhydricity, and abnormal developmental responses. While some species, such as apple and kalanchoe, showed improvement under shading and lower light intensity, cucurbits and tomato remained sensitive, exhibiting persistent physiological aberrations. These results emphasize that successful implementation of LED lighting requires tailoring spectral quality to the specific needs of each species and its downstream applications. We recommend that spectral validation become a routine part of tissue culture protocol development to ensure reproducible results in plant propagation, regeneration, and transformation.