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Effects of Red and Blue LED Light on the Growth and Photosynthesis of Barley (Hordeum vulgare L.) Seedlingsстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Kochetova Galina Vladimirovna, Avercheva Olga Vladimirovna, Bassarskaya Elizaveta Mikhailovna, Kushunina Maria Aleksandrovna, Zhigalova Tatiana Viktorovna
- Журнал: Journal of Plant Growth Regulation
- Том: 42
- Год издания: 2022
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- Первая страница: 1804
- Последняя страница: 1820
- DOI: 10.1007/s00344-022-10661-x
- Аннотация: According to the action spectrum of photosynthesis, photosynthetic efficiency is highest for red light. However, long-term growth with only red light leads to unfavorable changes in plant morphology, decrease in photosynthetic capacity and plant productivity. Detailed mechanisms behind these changes are still poorly understood. We studied the effects of narrow-band red (RL) and blue (BL) LED lighting on the morphology and photosynthesis of barley (Hordeum vulgare L.) seedlings at 9 days old, when energy for plant growth comes mostly from the endosperm, and light has a mainly morphogenic effect on plant growth. Plants grown with white fluorescent lamps (WL) were used as a control. At this developmental stage, light spectrum had small but significant effects on most morphometric parameters, which may become more prominent as the plant grows. These effects were more pronounced in RL-grown plants and were similar to the ‘shade-avoidance response’, which is unusual as in nature it occurs when the fraction of red light in the spectrum is low. RL-grown plants also had impaired photosynthetic photochemical efficiency (as assessed by PAM-fluorometry and leaf absorption). BL-grown plants had a stronger similarity to control plants in their morphology and photosynthetic characteristics than RL-grown plants; however, they had higher NPQ and different NPQ induction kinetics than WL- and RL-grown plants. Our results suggest that photoregulation of plant morphology and photosynthesis evolutionarily adapted to natural light is miscoordinated in narrow-band LED light. We discuss possible reasons for this miscoordination and for the formation of observed phenotypes on the level of photoreceptors.
- Добавил в систему: Кушунина Мария Александровна