Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency
Аутори
Veljović Jovanović, SonjaKasalica, Bećko
Miletić, Katarina
Vidović, Marija
Šušić, Nikola
Jeremić, Dejan
Belča, Ivan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Chloroplast movement rapidly ameliorates the effects of suboptimal light intensity by accumulating along the periclinal cell walls, as well as the effects of excess light by shifting to the anticlinal cell walls. These acclimation responses are triggered by phototropins located at the plasma membrane and chloroplast envelope. Here, we used a recently developed non-invasive system sensitive to very small changes in red light leaf transmittance to perform long-term continuous measurements of dark–light transitions. As a model system, we used variegated Pelargonium zonale leaves containing green sectors (GS) with fully developed chloroplasts and achlorophyllous, white sectors (WS) with undifferentiated plastids, and higher phototropin expression levels. We observed biphasic changes in the red-light transmittance and oscillations triggered by medium intensities of white light, described by a transient peak preceded by a constant decrease in transmittance level. A slight change in red-light... transmittance was recorded even in WS. Furthermore, the chloroplast position at lower light intensities affected the rapid light curves, while high light intensity decreased saturated electron transport, maximum quantum efficiency of photosystem II, and increased non-photochemical quenching of chlorophyll fluorescence and epidermal flavonoids. Our results extend the knowledge of light-dependent chloroplast movements and thus contribute to a better understanding of their role in regulating photosynthesis under fluctuating light conditions.
Кључне речи:
blue-light receptors / chloroplast movement / dark–light transition / phototropins / red-light transmittance / variegated Pelargonium zonaleИзвор:
International Journal of Molecular Sciences, 2023, 24, 18, 14265-Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200162 (Универзитет у Београду, Физички факултет) (RS-MESTD-inst-2020-200162)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200053 (Универзитет у Београду, Институт за мултидисциплинарна истраживања) (RS-MESTD-inst-2020-200053)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200042 (Универзитет у Београду, Институт за молекуларну генетику и генетичко инжењерство) (RS-MESTD-inst-2020-200042)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200288 (Иновациони центар Хемијског факултета у Београду доо) (RS-MESTD-inst-2020-200288)
Институција/група
Institut za molekularnu genetiku i genetičko inženjerstvoTY - JOUR AU - Veljović Jovanović, Sonja AU - Kasalica, Bećko AU - Miletić, Katarina AU - Vidović, Marija AU - Šušić, Nikola AU - Jeremić, Dejan AU - Belča, Ivan PY - 2023 UR - https://www.mdpi.com/1422-0067/24/18/14265 UR - https://imagine.imgge.bg.ac.rs/handle/123456789/2169 AB - Chloroplast movement rapidly ameliorates the effects of suboptimal light intensity by accumulating along the periclinal cell walls, as well as the effects of excess light by shifting to the anticlinal cell walls. These acclimation responses are triggered by phototropins located at the plasma membrane and chloroplast envelope. Here, we used a recently developed non-invasive system sensitive to very small changes in red light leaf transmittance to perform long-term continuous measurements of dark–light transitions. As a model system, we used variegated Pelargonium zonale leaves containing green sectors (GS) with fully developed chloroplasts and achlorophyllous, white sectors (WS) with undifferentiated plastids, and higher phototropin expression levels. We observed biphasic changes in the red-light transmittance and oscillations triggered by medium intensities of white light, described by a transient peak preceded by a constant decrease in transmittance level. A slight change in red-light transmittance was recorded even in WS. Furthermore, the chloroplast position at lower light intensities affected the rapid light curves, while high light intensity decreased saturated electron transport, maximum quantum efficiency of photosystem II, and increased non-photochemical quenching of chlorophyll fluorescence and epidermal flavonoids. Our results extend the knowledge of light-dependent chloroplast movements and thus contribute to a better understanding of their role in regulating photosynthesis under fluctuating light conditions. T2 - International Journal of Molecular Sciences T2 - International Journal of Molecular Sciences T1 - Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency IS - 18 SP - 14265 VL - 24 DO - 10.3390/ijms241814265 ER -
@article{ author = "Veljović Jovanović, Sonja and Kasalica, Bećko and Miletić, Katarina and Vidović, Marija and Šušić, Nikola and Jeremić, Dejan and Belča, Ivan", year = "2023", abstract = "Chloroplast movement rapidly ameliorates the effects of suboptimal light intensity by accumulating along the periclinal cell walls, as well as the effects of excess light by shifting to the anticlinal cell walls. These acclimation responses are triggered by phototropins located at the plasma membrane and chloroplast envelope. Here, we used a recently developed non-invasive system sensitive to very small changes in red light leaf transmittance to perform long-term continuous measurements of dark–light transitions. As a model system, we used variegated Pelargonium zonale leaves containing green sectors (GS) with fully developed chloroplasts and achlorophyllous, white sectors (WS) with undifferentiated plastids, and higher phototropin expression levels. We observed biphasic changes in the red-light transmittance and oscillations triggered by medium intensities of white light, described by a transient peak preceded by a constant decrease in transmittance level. A slight change in red-light transmittance was recorded even in WS. Furthermore, the chloroplast position at lower light intensities affected the rapid light curves, while high light intensity decreased saturated electron transport, maximum quantum efficiency of photosystem II, and increased non-photochemical quenching of chlorophyll fluorescence and epidermal flavonoids. Our results extend the knowledge of light-dependent chloroplast movements and thus contribute to a better understanding of their role in regulating photosynthesis under fluctuating light conditions.", journal = "International Journal of Molecular Sciences, International Journal of Molecular Sciences", title = "Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency", number = "18", pages = "14265", volume = "24", doi = "10.3390/ijms241814265" }
Veljović Jovanović, S., Kasalica, B., Miletić, K., Vidović, M., Šušić, N., Jeremić, D.,& Belča, I.. (2023). Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency. in International Journal of Molecular Sciences, 24(18), 14265. https://doi.org/10.3390/ijms241814265
Veljović Jovanović S, Kasalica B, Miletić K, Vidović M, Šušić N, Jeremić D, Belča I. Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency. in International Journal of Molecular Sciences. 2023;24(18):14265. doi:10.3390/ijms241814265 .
Veljović Jovanović, Sonja, Kasalica, Bećko, Miletić, Katarina, Vidović, Marija, Šušić, Nikola, Jeremić, Dejan, Belča, Ivan, "Red-Light Transmittance Changes in Variegated Pelargonium zonale—Diurnal Variation in Chloroplast Movement and Photosystem II Efficiency" in International Journal of Molecular Sciences, 24, no. 18 (2023):14265, https://doi.org/10.3390/ijms241814265 . .