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Bucher SF, Uhde L, Weigelt A, Cesarz S, Eisenhauer N, Gebler A, Kyba C, Römermann C, Shatwell T, Hines J. Artificial light at night decreases plant diversity and performance in experimental grassland communities. Philos Trans R Soc Lond B Biol Sci 2023; 378:20220358. [PMID: 37899022 PMCID: PMC10613542 DOI: 10.1098/rstb.2022.0358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 07/28/2023] [Indexed: 10/31/2023] Open
Abstract
Artificial light at night (ALAN) affects many areas of the world and is increasing globally. To date, there has been limited and inconsistent evidence regarding the consequences of ALAN for plant communities, as well as for the fitness of their constituent species. ALAN could be beneficial for plants as they need light as energy source, but they also need darkness for regeneration and growth. We created model communities composed of 16 plant species sown, exposed to a gradient of ALAN ranging from 'moonlight only' to conditions like situations typically found directly underneath a streetlamp. We measured plant community composition and its production (biomass), as well as functional traits of three plant species from different functional groups (grasses, herbs, legumes) in two separate harvests. We found that biomass was reduced by 33% in the highest ALAN treatment compared to the control, Shannon diversity decreased by 43% and evenness by 34% in the first harvest. Some species failed to establish in the second harvest. Specific leaf area, leaf dry matter content and leaf hairiness responded to ALAN. These responses suggest that plant communities will be sensitive to increasing ALAN, and they flag a need for plant conservation activities that consider impending ALAN scenarios. This article is part of the theme issue 'Light pollution in complex ecological systems'.
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Affiliation(s)
- Solveig Franziska Bucher
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Lia Uhde
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
| | - Alexandra Weigelt
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
| | - Simone Cesarz
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
| | - Nico Eisenhauer
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
| | - Alban Gebler
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
| | - Christopher Kyba
- Interdisciplinary Geographic Information Sciences, Ruhr-Universität Bochum, 44780 Bochum, Germany
- Remote Sensing and Geoinformatics, Deutsches GeoForschungsZentrum GFZ, Germany
| | - Christine Römermann
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Tom Shatwell
- Department of Lake Research, Helmholtz-Centre for Environmental Research – UFZ, 39114 Magdeburg, Germany
| | - Jes Hines
- Department of Plant Biodiversity, Institute of Ecology and Evolution with Herbarium Haussknecht and Botanical Garden, Friedrich Schiller University Jena, 07743 Jena, Germany
- Systematic Botany and Functional Biodiversity, Institute of Biology, Leipzig University, 04109 Leipzig, Germany
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Jin EJ, Yoon JH, Lee H, Bae EJ, Yong SH, Choi MS. Evaluation of drought stress level in Sargent's cherry ( Prunus sargentii Rehder) using photosynthesis and chlorophyll fluorescence parameters and proline content analysis. PeerJ 2023; 11:e15954. [PMID: 37842053 PMCID: PMC10576498 DOI: 10.7717/peerj.15954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 08/02/2023] [Indexed: 10/17/2023] Open
Abstract
Sargent's cherry trees (Prunus sargentiiRehder) are widely planted as an ornamental, climate change-sensing species. This study investigated changes in the soil moisture content, fresh weight, photosynthesis and chlorophyll fluorescence properties, and the chlorophyll and proline content of four-year-old P. sargentii seedlings after 30 days of drought stress. In the trees subjected to drought stress treatment, soil moisture content decreased, and the fresh weight of the aboveground part of the plant decreased. However, there was no significant difference in the root growth of the dried plants. Among the photosynthesis parameters, Pn MAX, E and gs showed a significant (p < 0.001) decrease after 15 days in dry-stressed seedlings, but there was no difference between treatments in WUE until 20 days, and there was a significant (p < 0.001) difference after 24 days. Chlorophyll fluorescence parameters, Fv/Fm, ΦPSII, Rfd, NPQ, and Pn MAX, also increased after 10 days in dry-stressed seedlings, but these changes did not reach statistical significance compared to the control treatment. These results may suggest that drought stress highly correlates with photosynthesis and chlorophyll fluorescence parameters. Chlorophyll content also significantly decreased in the seedlings under drought stress compared with the control treatment. The proline content decreased until the 10th day of drought stress treatment and increased after the 15th day, showing an increase of 10.9% on the 15th day and 57.1% on the 30th day, compared to the control treatment. These results suggest that photosynthesis, chlorophyll fluorescence parameters, and proline content can be used to evaluate drought stress in trees. The results of this study can contribute to the management of forests, such as the irrigation of trees when pore control ability and photosynthesis ability decrease.
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Affiliation(s)
- Eon Ju Jin
- Forest Biomaterials Research Center, National institute of Forest Science, Jinju, South Korea
| | - Jun-Hyuk Yoon
- Forest Biomaterials Research Center, National institute of Forest Science, Jinju, South Korea
| | - Hyeok Lee
- Forest Biomaterials Research Center, National institute of Forest Science, Jinju, South Korea
| | - Eun Ji Bae
- Forest Biomaterials Research Center, National institute of Forest Science, Jinju, South Korea
| | - Seong Hyeon Yong
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
| | - Myung Suk Choi
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
- Division of Environmental Forest Science, Gyeongsang National University, Jinju, South Korea
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Jin EJ, Yoon JH, Lee H, Kwon HY, Shin HN, Yong SH, Choi MS. Effects of Drip Irrigation-Fertilization on Growth, Flowering, Photosynthesis and Nutrient Absorption of Containerized Seedlings of Hibiscus syriacus L. (Haeoreum). Plants (Basel) 2023; 12:2293. [PMID: 37375918 DOI: 10.3390/plants12122293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/06/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023]
Abstract
The amount of irrigation and fertilization should be considered first for the production and standardization of high-quality H. syriacus L. seedlings using container seedlings. This study was conducted to investigate the optimal conditions suitable for container cultivation of hibiscus by analyzing growth and physiological responses according to the control of irrigation and fertilization. Therefore, in this study, H. syriacus L. for. Haeoreum (3-year-old hardwood cutting propagation), a fast-growing, was transplanted into a 40 L container. The irrigation amount per container was adjusted (0.2, 0.3 and 0.4 ton/yr/tree), and the amount of fertilizer applied (0, 69.0, 138.0 and 207.0 g/yr/tree). The growth rate according to the irrigation-fertilization treatment was higher in the 0.3 ton-138.0 g/yr/tree irrigation-fertilization treatment (p < 0.001). Total biomass yield and seedling quality index (SQI) were highest in the 0.3 ton-138.0 g/yr/tree irrigation-fertilization treatment (p < 0.001). The higher the fertilization concentration, the faster the flowering and the longer the flowering. The photosynthetic capacity of H. syriacus L. was reduced in bare root seedling cultivation and container-non-fertilized treatment. The chlorophyll fluorescence response was also affected by bare root cultivation and containerized seedling cultivation fertilization. Nutrient vector diagnosis showed "nutritional suitability" in the 0.3 ton-138.0 g/yr/tree treatment. Overall, containerized seedling cultivation was superior in growth, photosynthetic performance, photochemical efficiency, and nutrient storage capacity compared to bare root cultivation. These results be expected to contribute not only to the industrial production of excellent container seedlings of H. syriacus L. but also to the production of other woody plants.
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Affiliation(s)
- Eon-Ju Jin
- Forest Biomaterials Research Center, National Institute of Forest Science, Jinju 52817, Republic of Korea
| | - Jun-Hyuck Yoon
- Forest Biomaterials Research Center, National Institute of Forest Science, Jinju 52817, Republic of Korea
| | - Hyeok Lee
- Forest Biomaterials Research Center, National Institute of Forest Science, Jinju 52817, Republic of Korea
| | - Hae-Yun Kwon
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju 36040, Republic of Korea
| | - Han-Na Shin
- Division of Special Forest Resources, Department of Forest Bio-Resources, National Institute of Forest Science, Suwon 16631, Republic of Korea
| | - Seong-Hyeon Yong
- Division of Forest Environmental Resources and Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Myung-Suk Choi
- Division of Forest Environmental Resources and Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
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Swoczyna T, Kalaji HM, Bussotti F, Mojski J, Pollastrini M. Environmental stress - what can we learn from chlorophyll a fluorescence analysis in woody plants? A review. Front Plant Sci 2022; 13:1048582. [PMID: 36589121 PMCID: PMC9795016 DOI: 10.3389/fpls.2022.1048582] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Chlorophyll a fluorescence (ChF) signal analysis has become a widely used and rapid, non-invasive technique to study the photosynthetic process under stress conditions. It monitors plant responses to various environmental factors affecting plants under experimental and field conditions. Thus, it enables extensive research in ecology and benefits forestry, agriculture, horticulture, and arboriculture. Woody plants, especially trees, as organisms with a considerable life span, have a different life strategy than herbaceous plants and show more complex responses to stress. The range of changes in photosynthetic efficiency of trees depends on their age, ontogeny, species-specific characteristics, and acclimation ability. This review compiles the results of the most commonly used ChF techniques at the foliar scale. We describe the results of experimental studies to identify stress factors that affect photosynthetic efficiency and analyse the experience of assessing tree vigour in natural and human-modified environments. We discuss both the circumstances under which ChF can be successfully used to assess woody plant health and the ChF parameters that can be useful in field research. Finally, we summarise the advantages and limitations of the ChF method in research on trees, shrubs, and woody vines.
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Affiliation(s)
- Tatiana Swoczyna
- Department of Environment Protection and Dendrology, Institute of Horticultural Sciences, Warsaw University of Life Sciences SGGW, Warsaw, Poland
| | - Hazem M. Kalaji
- Department of Plant Physiology, Institute of Biology, Warsaw University of Life Sciences SGGW, Warsaw, Poland
| | - Filippo Bussotti
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
| | - Jacek Mojski
- Twój Swiat Jacek Mojski, Łukow, Poland
- Fundacja Zielona Infrastruktura, Łukow, Poland
| | - Martina Pollastrini
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Florence, Italy
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Encinas-Valero M, Esteban R, Hereş AM, Becerril JM, García-Plazaola JI, Artexe U, Vivas M, Solla A, Moreno G, Curiel Yuste J. Photoprotective compounds as early markers to predict holm oak crown defoliation in declining Mediterranean savannahs. Tree Physiol 2022; 42:208-224. [PMID: 33611551 DOI: 10.1093/treephys/tpab006] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Dehesas, human-shaped savannah-like ecosystems, where the overstorey is mainly dominated by the evergreen holm oak (Quercus ilex L. subsp. ballota (Desf.) Samp.), are classified as a global conservation priority. Despite being Q. ilex a species adapted to the harsh Mediterranean environmental conditions, recent decades have witnessed worrisome trends of climate-change-induced holm oak mortality. Holm oak decline is evidenced by tree vigour loss, gradual defoliation and ultimately, death. However, before losing leaves, trees undergo leaf-level physiological adjustments in response to stress that may represent a promising field to develop biochemical early markers of holm oak decline. This study explored holm oak photoprotective responses (pigments, tocopherols and photosynthetic performance) in 144 mature holm oak trees with different health statuses (i.e., crown defoliation percentages) from healthy to first-stage declining individuals. Our results indicate differential photochemical performance and photoprotective compounds concentration depending on the trees' health status. Declining trees showed higher energy dissipation yield, lower photochemical efficiency and enhanced photoprotective compounds. In the case of total violaxanthin cycle pigments (VAZ) and tocopherols, shifts in leaf contents were significant at very early stages of crown defoliation, even before visual symptoms of decline were evident, supporting the value of these biochemical compounds as early stress markers. Linear mixed-effects models results showed an acute response, both in the photosynthesis performance index and in the concentration of foliar tocopherols, during the onset of tree decline, whereas VAZ showed a more gradual response along the defoliation gradient of the crown. These results collectively demonstrate that once a certain threshold of leaf physiological damage is surpassed, that leaf cannot counteract oxidative stress and progressive loss of leaves occurs. Therefore, the use of both photosynthesis performance indexes and the leaf tocopherols concentration as early diagnostic tools might predict declining trends, facilitating the implementation of preventive measures to counteract crown defoliation.
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Affiliation(s)
- Manuel Encinas-Valero
- BC3-Basque Centre for Climate Change, Scientific Campus of the University of the Basque Country, 48940 Leioa, Bizkaia, Spain
| | - Raquel Esteban
- Department of Plant Biology and Ecology, University of Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain
| | - Ana-Maria Hereş
- BC3-Basque Centre for Climate Change, Scientific Campus of the University of the Basque Country, 48940 Leioa, Bizkaia, Spain
- Department of Forest Sciences, Transilvania University of Braşov, Sirul Beethoven-1, 500123 Braşov, Romania
| | - José María Becerril
- Department of Plant Biology and Ecology, University of Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain
| | - José Ignacio García-Plazaola
- Department of Plant Biology and Ecology, University of Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain
| | - Unai Artexe
- Department of Plant Biology and Ecology, University of Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Bizkaia, Spain
| | - María Vivas
- Faculty of Forestry, Institute for Dehesa Research (INDEHESA), University of Extremadura, Avenida Virgen del Puerto 2, 10600 Plasencia, Spain
| | - Alejandro Solla
- Faculty of Forestry, Institute for Dehesa Research (INDEHESA), University of Extremadura, Avenida Virgen del Puerto 2, 10600 Plasencia, Spain
| | - Gerardo Moreno
- Faculty of Forestry, Institute for Dehesa Research (INDEHESA), University of Extremadura, Avenida Virgen del Puerto 2, 10600 Plasencia, Spain
| | - Jorge Curiel Yuste
- BC3-Basque Centre for Climate Change, Scientific Campus of the University of the Basque Country, 48940 Leioa, Bizkaia, Spain
- IKERBASQUE, Basque Foundation for SciencePlaza Euskadi 548009 Bilbao, Bizkaia, Spain
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Hao X, Zhou S, Han L, Zhai Y. Differences in PI total of Quercus liaotungensis seedlings between provenance. Sci Rep 2021; 11:23439. [PMID: 34873278 DOI: 10.1038/s41598-021-02941-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 11/17/2021] [Indexed: 11/08/2022] Open
Abstract
The performance index of overall photochemistry (PItotal) is widely used in photosynthesis research, but the PItotal interspecies differences are unclear. To this end, seeds of Quercus liaotungensis from 10 geographical provenances were planted in two different climate types. Two years later, leaf relative chlorophyll content (SPAD) and chlorophyll a fluorescence transient of seedlings were measured. Meanwhile, the environmental factors of provenance location, including temperature, precipitation, solar radiation, wind speed, transpiration pressure, and soil properties, were retrieved to analyze the trends of PItotal among geographic provenance. The results showed that, in each climate type, there was no significant difference in SPAD and electron transfer status between PSII and PSI, but PItotal was significantly different among geographic provenances. The major internal causes of PItotal interspecies differences were the efficiency of electronic transfer to final PSI acceptor and the number of active reaction centers per leaf cross-section. The main external causes of PItotal interspecies differences were precipitation of the warmest quarter, solar radiation intensity in July, and annual precipitation of provenance location. PItotal had the highest correlation with precipitation of the warmest quarter of origin and could be fitted by the Sine function. The peak location and fluctuating trend of precipitation-PItotal fitted curve were different in two climate types, largely due to the difference of precipitation and upper soil conductivity in the two test sites. Utilizing the interspecific variation and trends of PItotal might be a good strategy to screen high and stable photosynthetic efficiency of Q. liaotungensis provenance.
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Zhu L, Wen W, Thorpe MR, Hocart CH, Song X. Combining Heat Stress with Pre-Existing Drought Exacerbated the Effects on Chlorophyll Fluorescence Rise Kinetics in Four Contrasting Plant Species. Int J Mol Sci 2021; 22:ijms221910682. [PMID: 34639023 PMCID: PMC8508795 DOI: 10.3390/ijms221910682] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/21/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022] Open
Abstract
Although drought and high temperature are two main factors affecting crop productivity and forest vegetation dynamics in many areas worldwide, little work has been done to describe the effects of heat combined with pre-existing drought on photochemical function in diverse plant species. This study investigated the biophysical status of photosystem II (PSII) and its dynamic responses under 2-day heat stress during a 2-week drought by measuring the polyphasic chlorophyll fluorescence rise (OJIP) kinetics. This study examined four contrasting species: a C3 crop/grass (wheat), a C4 crop/grass (sorghum), a temperate tree species (Fraxinus chinensis) and a tropical tree species (Radermachera sinica). Principal component analysis showed that the combination of heat and drought deviated from the effect of heat or drought alone. For all four species, a linear mixed-effects model analysis of variance of the OJIP parameters showed that the deviation arose from decreased quantum yield and increased heat dissipation of PSII. The results confirmed, in four contrasting plant species, that heat stress, when combined with pre-existing drought, exacerbated the effects on PSII photochemistry. These findings provide direction to future research and applications of chlorophyll fluorescence rise OJIP kinetics in agriculture and forestry, for facing increasingly more severe intensity and duration of both heat and drought events under climate change.
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Affiliation(s)
- Lingling Zhu
- Shenzhen Key Laboratory of Marine Biological Resources and Ecological Environment, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (L.Z.); (W.W.)
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Wei Wen
- Shenzhen Key Laboratory of Marine Biological Resources and Ecological Environment, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (L.Z.); (W.W.)
| | - Michael R. Thorpe
- Research School of Biology, Australian National University, Canberra, ACT 2601, Australia; (M.R.T.); (C.H.H.)
| | - Charles H. Hocart
- Research School of Biology, Australian National University, Canberra, ACT 2601, Australia; (M.R.T.); (C.H.H.)
- Isotopomics in Chemical Biology, School of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xin Song
- Shenzhen Key Laboratory of Marine Biological Resources and Ecological Environment, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China; (L.Z.); (W.W.)
- Correspondence:
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Lee KC, An J, Hwang JE, Kim PB, Park HB, Kim S, Park HJ, Lee CW, Lee BD, Kim NY. Effects of Light Condition on Growth and Physiological Characteristics of the Endangered Species Sedirea japonica under RCP 6.0 Climate Change Scenarios. Plants (Basel) 2021; 10:plants10091891. [PMID: 34579424 PMCID: PMC8471670 DOI: 10.3390/plants10091891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/07/2021] [Accepted: 09/07/2021] [Indexed: 11/21/2022]
Abstract
This study was conducted to evaluate the physiological and growth responses of Sedirea japonica cultured in chambers under RCP 6.0 and different light conditions. S. japonica was grown in a soil–plant daylight system chamber under two treatments, a control (CO2 = 400 ppm) and a climate change treatment (CCT) (CO2 = 650 ppm, temperature = control + 3 °C), and three different shading treatments (60%, 90%, and no-shading). S. japonica showed the characteristics of typical Crassulacean acid metabolism (CAM) plants. As the shading rate increased, it increased chlorophyll content, leaf area, and leaf dry weight to efficiently absorb and use light. The CCT had a lower CO2 absorption rate, stomatal conductance, and growth rate and slightly higher water utilization efficiency than the control. This was because stomatal closure occurred in the CCT to reduce water loss due to a relatively higher temperature. As CO2 fixation decreased and consumption increased due to respiration, the overall growth was inhibited. The CCT without shading revealed a dynamic photoinhibition phenomenon showing a significant increase in ABS/RC, TRo/RC, ETo/RC, and DIo/RC and a decrease in PI ABS and DF ABS. In this group, leaf, root, and total dry weight, chlorophyll content, and carotenoid content were the worst growth indices.
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Affiliation(s)
- Kyeong Cheol Lee
- Department of Forestry, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea;
| | - Jiae An
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Jung Eun Hwang
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Pyoung Beom Kim
- Wetland Center, National Institute of Ecology, Changnyeong 50303, Korea;
| | - Hyeong Bin Park
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Seongjun Kim
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Hwan Joon Park
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Chang Woo Lee
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Byoung-Doo Lee
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
| | - Nam Young Kim
- Research Center for Endangered Species, National Institute of Ecology, Yeongyang 36531, Korea; (J.A.); (J.E.H.); (H.B.P.); (S.K.); (H.J.P.); (C.W.L.); (B.-D.L.)
- Correspondence: ; Tel.: +82-054-680-7280
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Zeng F, Wang G, Liang Y, Guo N, Zhu L, Wang Q, Chen H, Ma D, Wang J. Disentangling the photosynthesis performance in japonica rice during natural leaf senescence using OJIP fluorescence transient analysis. Funct Plant Biol 2021; 48:206-217. [PMID: 33099327 DOI: 10.1071/fp20104] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Rice undergoes leaf senescence accompanied with grain filling when the plants reach the end of their temporal niche, and a delay in leaf senescence ultimately improves the yield and quality of grain. To estimate the decline in photosynthesis during leaf senescence and to find an efficient and useful tool to identify rice genotypes with a longer duration of active photosynthesis, we examined PSII photosynthetic activity in the flag leaves of japonica rice Shennong265 (SN265) and Beigeng3 (BG3) during leaf senescence using chlorophyll a fluorescence kinetics. The results show that inhibition occurred in the electron transport chains, but the energetic connectivity of PSII units was not affected as dramatically during leaf senescence. PSII reaction centres (RCs) were transformed into 'silent RCs,' and the chlorophyll content decreased during leaf senescence. However the size of the 'economic' antennae increased. Further, the percentage of variation of the specific energy flux parameters can rationally be used to indicate leaf senescence from the perspective of energy balance. Although the performance indices were more sensitive than other functional and structural JIP-test parameters, they still did not serve as an indicator of crop yield.
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Affiliation(s)
- Faliang Zeng
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Guojiao Wang
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China; and Corresponding authors. ;
| | - Yinpei Liang
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Naihui Guo
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Lin Zhu
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Qi Wang
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Hongwei Chen
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Dianrong Ma
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China
| | - Jiayu Wang
- Rice Research Institute, Shenyang Agricultural University, Shenyang, 110866, China; and Corresponding authors. ;
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10
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Pollastrini M, Salvatori E, Fusaro L, Manes F, Marzuoli R, Gerosa G, Brüggemann W, Strasser RJ, Bussotti F. Selection of tree species for forests under climate change: is PSI functioning a better predictor for net photosynthesis and growth than PSII? Tree Physiol 2020; 40:1561-1571. [PMID: 32597979 DOI: 10.1093/treephys/tpaa084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
A chlorophyll fluorescence (ChlF) assessment was carried out on oak seedlings (Quercus ilex L., Quercus pubescens Willd., Quercus frainetto Ten.) of Italian and Greek provenance, during the years 2017 and 2018, in a common garden in central Italy planted in 2017. This trial aimed to test the relative performances of the oak species in the perspective of assisted migration as part of the actions for the adaptation of forests to climate change. The assessment of the photosynthetic performance of the tree species included the analysis of the prompt chlorophyll fluorescence (PF) transient and the modulated reflection (MR) at 820 nm, leaf chlorophyll content, leaf gas exchange (net photosynthesis, stomatal conductance), plant growth (i.e., height) and mortality rate after 2 years from the beginning of the experiment. The assessment of the performance of the three oak species was carried out 'in vivo'. Plants were generated from seeds and exposed to several environmental factors, including changing seasonal temperature, water availability, and soil biological and physical functionality. The results of PF indicate a stable functionality of the photosynthetic system PSII (expressed as FV/FM) across species and provenances and a decline in photochemistry functionality at the I-P phase (ΔVIP) in Q. frainetto, thus indicating a decline of the content of PSI in this species. This result was confirmed by the findings of MR analysis, with the speed of reduction and subsequent oxidation of PSI (VRED and VOX) strongly correlated to the amplitude of ΔVIP. The photosynthetic rates (net photosynthesis, PN) and growth were correlated with the parameters associated with PSI content and function, rather than those related to PSII. The low performance of Q. frainetto in the common garden seems to be related to early foliar senescence with the depletion of nitrogen, due to suboptimal climatic and edaphic conditions. Chlorophyll fluorescence allowed discrimination of populations of oak species and individuation of the less (or/and best) suitable species for future forest ecology and management purposes.
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Affiliation(s)
- Martina Pollastrini
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Firenze, Piazzale delle Cascine 28, 50144, Firenze, Italy
| | - Elisabetta Salvatori
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, R.C. Casaccia, Rome, Italy
| | - Lina Fusaro
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Fausto Manes
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Riccardo Marzuoli
- Department of Mathematics and Physics, Catholic University of Sacred Heart, Via Musei 41, 25121, Brescia, Italy
| | - Giacomo Gerosa
- Department of Mathematics and Physics, Catholic University of Sacred Heart, Via Musei 41, 25121, Brescia, Italy
| | - Wolfgang Brüggemann
- Department of Ecology, Evolution and Diversity, Goethe University Frankfurt am Main and Senckenberg Biodiversity and Climate Research Center Frankfurt am Main, Biologicum (Flügel D, 1. OG, Raum 1.420) Campu Riedberg, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany
| | - Reto Jorg Strasser
- Bioenergetics and Microbiology Laboratory, University of Geneva, Jussy-Geneva CH-1254, Switzerland
- North West University South Africa, Potchefstroom, North-West Province, South Africa
| | - Filippo Bussotti
- Department of Agriculture, Food, Environment and Forestry (DAGRI), University of Firenze, Piazzale delle Cascine 28, 50144, Firenze, Italy
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11
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Madritsch S, Wischnitzki E, Kotrade P, Ashoub A, Burg A, Fluch S, Brüggemann W, Sehr EM. Elucidating Drought Stress Tolerance in European Oaks Through Cross-Species Transcriptomics. G3 (Bethesda) 2019; 9:3181-99. [PMID: 31395652 DOI: 10.1534/g3.119.400456] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The impact of climate change that comes with a dramatic increase of long periods of extreme summer drought associated with heat is a fundamental challenge for European forests. As a result, forests are expected to shift their distribution patterns toward north-east, which may lead to a dramatic loss in value of European forest land. Consequently, unraveling key processes that underlie drought stress tolerance is not only of great scientific but also of utmost economic importance for forests to withstand future heat and drought wave scenarios. To reveal drought stress-related molecular patterns we applied cross-species comparative transcriptomics of three major European oak species: the less tolerant deciduous pedunculate oak (Quercus robur), the deciduous but quite tolerant pubescent oak (Q. pubescens), and the very tolerant evergreen holm oak (Q. ilex). We found 415, 79, and 222 differentially expressed genes during drought stress in Q. robur, Q. pubescens, and Q. ilex, respectively, indicating species-specific response mechanisms. Further, by comparative orthologous gene family analysis, 517 orthologous genes could be characterized that may play an important role in drought stress adaptation on the genus level. New regulatory candidate pathways and genes in the context of drought stress response were identified, highlighting the importance of the antioxidant capacity, the mitochondrial respiration machinery, the lignification of the water transport system, and the suppression of drought-induced senescence - providing a valuable knowledge base that could be integrated in breeding programs in the face of climate change.
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12
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Xie XL, Xia XJ, Kuang S, Zhang XL, Yin XR, Yu JQ, Chen KS. A novel ethylene responsive factor CitERF13 plays a role in photosynthesis regulation. Plant Sci 2017; 256:112-119. [PMID: 28167024 DOI: 10.1016/j.plantsci.2016.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 11/01/2016] [Accepted: 11/03/2016] [Indexed: 05/22/2023]
Abstract
Ethylene responsive factors (ERFs) act as critical downstream components of the ethylene signalling pathway in regulating plant development and stress responses. However little is known about its role in regulation of photosynthesis. Here, we identified an ethylene-inducible ERF gene in citrus, CitERF13. Transient over-expression of CitERF13 in N. tabacum leaves, resulted in a significant decrease in net photosynthetic rate. Closer examination of photosynthetic activity of PSII and PSI indicated that CitERF13 overexpression led to declines of Fv/Fm, Y(II) and Y(I). However, change in NPQ was less pronounced. CitERF13 overexpression also significantly reduced Vc,max, Jmax and AQY, indicating inhibition of the Calvin cycle. The expression of photosynthesis-related genes was suppressed to a variable extent in leaf blades transiently over-expressing CitERF13. CitERF13 transient overexpression in tobacco or citrus both resulted in a decline of Chlorophyll content and CitERF13 overexpressing tobacco leaf disc was more susceptible to chlorosis in response to MV-mediated oxidative stress. The results suggest that CitERF13 is potentially involved in suppressing photosynthesis through multiple pathways, for instance, inhibiting photochemical activity of photosynthesis, CO2 carboxylation capacity and chlorophyll metabolism.
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Affiliation(s)
- Xiu-Lan Xie
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Xiao-Jian Xia
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Sheng Kuang
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Xi-Li Zhang
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Xue-Ren Yin
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Jing-Quan Yu
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China
| | - Kun-Song Chen
- College of Agriculture & Biotechnology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China; The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou, 310058, PR China.
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13
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Zhang D, Zhang QS, Yang XQ, Sheng ZT, Nan GN. The alternation between PSII and PSI in ivy (Hedera nepalensis) demonstrated by in vivo chlorophyll a fluorescence and modulated 820 nm reflection. Plant Physiol Biochem 2016; 108:499-506. [PMID: 27592174 DOI: 10.1016/j.plaphy.2016.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 08/23/2016] [Accepted: 08/26/2016] [Indexed: 06/06/2023]
Abstract
To examine the coordination between photosystem II (PSII) and photosystem I (PSI) in response to varying environmental conditions, both diurnal fluctuations and seasonal variability of photosynthetic electron transport activity in ivy (Hedera nepalensis, Araliaceae) were investigated: by measuring prompt fluorescence, delayed fluorescence (DF) and modulated reflection of 820 nm light (MR). During diurnal fluctuations, the PSII electron donor side was damaged, as evidenced by decreases of the fast amplitude of DF decay kinetics at I1, although there was no significant change in relative variable fluorescence at K-step to amplitude of FJ - Fo. Decreases in the maximum photochemical efficiency (i.e., PSII photoinactivation) were accompanied by an increased maximum decrease in the slope of MR/MRo (i.e., PSI photoactivation). Subsequently, PSII recovery and PSI relaxation occurred in the afternoon. Throughout the season, alternations between PSII and PSI were also suggested by the down-regulation of PSII and the up-regulation of PSI from summer to winter. Significant negative linear correlations between the activity of PSII and PSI across both diurnal fluctuations and seasonal variability were verified by correlation analyses. In addition, PSI was active throughout the year, suggesting PSI is independent from high temperatures. High PSI activity may maintain the functional integrity of the photosynthetic apparatus in overwintering ivy. The alternation between PSII and PSI activity may regulate the distribution of excitation energy between the two photosystems and balance the redox state of the electron transport change, thereby enabling ivy to respond to varying environmental conditions.
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Affiliation(s)
- Di Zhang
- Ocean School, Yantai University, Yantai, 264005, PR China
| | | | - Xiao Qi Yang
- Ocean School, Yantai University, Yantai, 264005, PR China
| | - Zi Tong Sheng
- Ocean School, Yantai University, Yantai, 264005, PR China
| | - Guo Ning Nan
- Ocean School, Yantai University, Yantai, 264005, PR China
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14
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Zivcak M, Brestic M, Kunderlikova K, Olsovska K, Allakhverdiev SI. Effect of photosystem I inactivation on chlorophyll a fluorescence induction in wheat leaves: Does activity of photosystem I play any role in OJIP rise? J Photochem Photobiol B 2015; 152:318-24. [PMID: 26388470 DOI: 10.1016/j.jphotobiol.2015.08.024] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 01/09/2023]
Abstract
Interpretation of the fast chlorophyll a fluorescence induction is still a subject of continuing discussion. One of the contentious issues is the influence of photosystem I (PSI) activity on the kinetics of the thermal JIP-phase of OJIP rise. To demonstrate this influence, we realized a series of measurements in wheat leaves subjected to PSI photoinactivation by the sequence of red saturation pulses (15,000 μmol photons m(-2) s(-1) for 0.3 s, every 10 s) applied in darkness. Such a treatment led to a moderate decrease of maximum quantum efficiency of PSII (by ~8%), but a strong decrease of the number of oxidizable PSI (by ~55%), which considerably limited linear electron transport and CO2 assimilation. Surprisingly, the PSI photoinactivation had low effects on OJIP kinetics of variable fluorescence. In particular, the amplitude of variable fluorescence of IP-step (ΔVIP), which has been considered to be a measure of PSI content, was not decreased, despite the low content of photooxidizable PSI. On the other hand, the slower relaxation of chlorophyll fluorescence after saturation pulse as well as the results of the double-hit method suggest that PSI inactivation treatment led to an increase of the fraction of QB-nonreducing PSII reaction centers. Our results somewhat challenge the mainstream interpretations of JIP-thermal phase, and at least suggest that the IP amplitude cannot serve to estimate reliably the PSI content or the PSI to PSII ratio. Moreover, these results recommend the use of the novel method of PSI inactivation, which might help clarify some important issues needed for the correct understanding of the OJIP fluorescence rise.
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Affiliation(s)
- Marek Zivcak
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic.
| | - Marian Brestic
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
| | - Kristyna Kunderlikova
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
| | - Katarina Olsovska
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
| | - Suleyman I Allakhverdiev
- Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia; Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119991, Russia.
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