Special issue in honour of Prof. Reto J. Strasser - Development and aging of photosynthetic apparatus of Vitis vinifera L. during growing season

Sitko, Krzysztof; Rusinowski, Szymon; Pogrzeba, Marta; Daszkowska‐Golec, Agata; Gieroń, Żaneta; Kalaji, Hazem M.; Małkowski, Eugeniusz

doi:10.32615/ps.2019.107

Cited by 17 publications

(10 citation statements)

References 46 publications

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“…On the contrary, leaves that are fallen off contain smaller amounts of at least some flavonol species than green leaves in B. pendula (Paaso et al 2017). In anthocyanin producing species, amounts of flavonols may either decrease (Sitko et al 2019), increase or stay constant (Mattila et al 2018) during senescence. Flavonol amount has been shown to increase in response to UV radiation in B. pendula (Morales et al 2010) and in response to coldness in B. nana (dwarf birch; Stark et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Singlet oxygen, flavonols and photoinhibition in green and senescing silver birch leaves

Mattila

Sotoudehnia

Kuuslampi

et al. 2021

Trees

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Key message Decreased absorptance and increased singlet oxygen production may cause photoinhibition of both PSII and PSI in birch leaves during autumn senescence; however, photosynthetic electron transfer stays functional until late senescence. Abstract During autumn senescence, deciduous trees degrade chlorophyll and may synthesize flavonols. We measured photosynthetic parameters, epidermal flavonols, singlet oxygen production in vivo and photoinhibition of the photosystems (PSII and PSI) from green and senescing silver birch (Betula pendula) leaves. Chlorophyll a fluorescence and P700 absorbance measurements showed that the amounts of both photosystems decreased throughout autumn senescence, but the remaining PSII units stayed functional until ~ 90% of leaf chlorophyll was degraded. An increase in the chlorophyll a to b ratio, a decrease in > 700 nm absorbance and a blue shift of the PSI fluorescence peak at 77 K suggest that light-harvesting complex I was first degraded during senescence, followed by light-harvesting complex II and finally the photosystems. Senescing leaves produced more singlet oxygen than green leaves, possibly because low light absorption by senescing leaves allows high flux of incident light per photosystem. Senescing leaves also induced less non-photochemical quenching, which may contribute to increased singlet oxygen production. Faster photoinhibition of both photosystems in senescing than in green leaves, under high light, was most probably caused by low absorption of light and rapid singlet oxygen production. However, senescing leaves maintained the capacity to recover from photoinhibition of PSII. Amounts of epidermal flavonols and singlet oxygen correlated neither in green nor in senescing leaves of silver birch. Moreover, Arabidopsis thaliana mutants, incapable of synthesizing flavonols, were not more susceptible to photoinhibition of PSII or PSI than wild type plants; screening of chlorophyll absorption by flavonols was, however, small in A. thaliana. These results suggest that flavonols do not protect against photoinhibition or singlet oxygen production in chloroplasts.

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Section: Introductionmentioning

confidence: 99%

Singlet oxygen, flavonols and photoinhibition in green and senescing silver birch leaves

Mattila

Sotoudehnia

Kuuslampi

et al. 2021

Trees

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“…Chlorophyll fluorescence analysis has become one of the most powerful and widely used techniques available to plant physiologists [26]. Many fluorescence applications detecting and analyzing stress effects on plants are nondestructive and sensitive [27]. Chlorophyll fluorescence shows the state of photosystem II and reflects the extent to which PS II uses the energy absorbed by chlorophyll.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular Mycorrhizal Fungi Improve Growth, Photosynthetic Activity, and Chlorophyll Fluorescence of Vitis vinifera L. cv. Ecolly under Drought Stress

Wang

2022

Agronomy

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Drought stress has become a limiting factor for viticulture with climate change. The influence of arbuscular mycorrhizal fungi (AMF) on grapevine Vitis vinifera L. cv. Ecolly’s leaf water content, chlorophyll concentration, photosynthesis activity, and chlorophyll fluorescence under drought stress was studied in the greenhouse. The experiment was designed as a randomized complete block with four treatments: AMF colonization, well-watered; non-AMF colonization, well-watered; AMF colonization with drought stress; and non-AMF colonization with drought stress. The grapevines inoculated with mycorrhiza had a higher water content in the leaves and higher chlorophyll concentration under drought stress than those without mycorrhiza inoculation. AMF colonization increased the dry biomass of shoots and roots, photosynthetic rate, stomatal conductance, and transpiration rate and decreased intercellular CO2 concentration. Mycorrhizal grapevines had higher non-photochemistry efficiency, higher photochemistry efficiency, and higher actual quantum yield than non-mycorrhizal grapevines. The results show that AMF alleviated the negative effects of drought stress on grapevines. The alleviation improved leaf water status, chlorophyll concentration, and photosynthetic capacity. Altogether, the results of our study indicate that AMF inoculation has the potential to protect grapevines under drought stress.

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“…The peaks at points K, J, and I corresponded to induction times of approximately 0.3 ms, 2 ms, and 30 ms, respectively. The obvious increase in ΔK indicates damage to the activity of the oxygen-evolving complex (OEC), while a clear appearance in ΔJ is related to the blockage of electron transfer from Q A to Q B [ 25 , 26 ]. On the first day and the 10 th day after the leaves fully unfolded, the ΔV K of the SL groups was lower than the ΔV K_ref but it higher than the ΔV K_ref from the 20 th day onward ( Fig 3C ).…”

Section: Resultsmentioning

confidence: 99%

“…Jiang et al [ 30 ] reported that the chlorophyll content of new leaves gradually increased with the development of leaves, and the net photosynthetic rate (Pn) increased at the same time. Sitko et al [ 26 ] found that the maximum photosynthetic rate of young grape leaves occurred one week after their chlorophyll content peaked. In the present study, the maximum chlorophyll content occurred on the 10 th day after the leaves fully unfolded, and the ABS/CS ratio also concurrently peaked.…”

Section: Discussionmentioning

confidence: 99%

“…At the same time, the ΔV K and ΔV J values of the SL-treated groups were significantly higher than that of the CK from the 40 th to 60 th days ( Fig 3 ), which implied that the decrease in OEC activity and the increase in inhibition of Q A to Q B electron transport occurred simultaneously with the lower RE 0 /RC ratio. These results could be caused by aging and response to stress [ 26 , 36 ].…”

Section: Discussionmentioning

confidence: 99%

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Effects of supplemental light on tomato growth and the mechanism of the photosystem II apparatus

et al. 2022

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The addition of supplemental light (SL) is an effective way to offset insufficient lighting. Although it is commonly believed that SL increases leaf photosynthesis and therefore improves yield and fruit flavor, the mechanism underlying the effects of SL on the photosystem II (PSII) apparatus remains unclear, and SL leads to high energy consumption. In order to save energy, we investigated the physiological status of the PSII apparatus, plant growth parameters and fruit parameters under two types of overhead SL with a low daily energy consumption of 0.0918 kWh m-2. The results showed that SL significantly increased the leaf chlorophyll content from full unfolding to yellowing. However, a remarkable increase in the absorption flux per cross-section (ABS/CS), the quantum yield of electron transport (φEo) and the performance index (PIabs) was observed only in a relatively short period of the leaf life cycle. SL also enhanced the fruit yield and quality. The obviously increased ΔVK and ΔVJ components of the chlorophyll fluorescence induction kinetic (OJIP) curve, along with the significantly decreased PIabs from days 40–60 after unfolding in the SL-treated groups, resulted in more rapid leaf aging and earlier fruit ripening compared with the control plants (CK). Therefore, an energy-friendly SL strategy can alter the physiological status of the PSII apparatus, affecting yield and fruit quality and maturity.

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Special issue in honour of Prof. Reto J. Strasser - Development and aging of photosynthetic apparatus of Vitis vinifera L. during growing season

Cited by 17 publications

References 46 publications

Singlet oxygen, flavonols and photoinhibition in green and senescing silver birch leaves

Singlet oxygen, flavonols and photoinhibition in green and senescing silver birch leaves

Arbuscular Mycorrhizal Fungi Improve Growth, Photosynthetic Activity, and Chlorophyll Fluorescence of Vitis vinifera L. cv. Ecolly under Drought Stress

Effects of supplemental light on tomato growth and the mechanism of the photosystem II apparatus

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