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Volgusheva AA, Hao J, He Y, Lovyagina ER, Loktyushkin AV, Parshina EY, Luneva OG, Baizhumanov AA, Khruschev SS, Maksimov GV, Rubin AB. Effect of the insecticide clothianidin on the photosynthetic electron transport chain in pea. Photochem Photobiol 2024. [PMID: 39219414 DOI: 10.1111/php.14018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 07/09/2024] [Accepted: 08/17/2024] [Indexed: 09/04/2024]
Abstract
Clothianidin (CL) is a neonicotinoid insecticide widely used in crop protection against insect pests. However, its effects on photosynthesis remain largely unknown. Here, by investigating the influence of CL at the concentrations of 22 and 110 μg/L on the primary processes of photosynthesis, membrane fluidity and structural changes of pea chloroplasts, we located several primary binding sites of this pesticide. Similar dynamics were observed for both concentrations. However, statistically significant differences were only found at 110 μg/L for all methods used. The light saturated rate of linear electron flow decreased mainly due to the disturbance of electron flow on the acceptor side of photosystem II (PSII) associated with the appearance of QB-nonreducing centers and empty QB binding sites of PSII. The functioning of the donor side of PSII, the activity of photosystem I (PSI) and the maximum quantum yield of PSII photochemistry (Fv/Fm) were not found to be significantly altered. Increased membrane fluidity and structural alterations of the thylakoid membrane led to a decrease in the development of the proton gradient ΔрН and membrane energization processes.
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Affiliation(s)
- Alena A Volgusheva
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Jingrao Hao
- Faculty of Biology, Shenzhen MSU-BIT University, Shenzhen, China
| | - Yanlin He
- Faculty of Biology, Shenzhen MSU-BIT University, Shenzhen, China
| | - Elena R Lovyagina
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Aleksey V Loktyushkin
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Evgenia Yu Parshina
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Oksana G Luneva
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Adil A Baizhumanov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
- Faculty of Biology, Shenzhen MSU-BIT University, Shenzhen, China
| | - Sergei S Khruschev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Georgy V Maksimov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Andrew B Rubin
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
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2
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Lahlou A, Coghill I, Davidson MLH, Billon R, Barneche F, Lazar D, Le Saux T, Jullien L. Leaves to Measure Light Intensity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304420. [PMID: 39081001 DOI: 10.1002/advs.202304420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 05/08/2024] [Indexed: 09/26/2024]
Abstract
Quantitative measurement of light intensity is a key step in ensuring the reliability and the reproducibility of scientific results in many fields of physics, biology, and chemistry. The protocols presented so far use various photoactive properties of manufactured materials. Here, leaves are introduced as an easily accessible green material to calibrate light intensity. The measurement protocol consists in monitoring the chlorophyll fluorescence of a leaf while it is exposed to a jump of constant light. The inverse of the characteristic time of the initial chlorophyll fluorescence rise is shown to be proportional to the light intensity received by the leaf over a wide range of wavelengths and intensities. Moreover, the proportionality factor is stable across a wide collection of plant species, which makes the measurement protocol accessible to users without prior calibration. This favorable feature is finally harnessed to calibrate a source of white light from exploiting simple leaves collected from a garden.
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Affiliation(s)
- Aliénor Lahlou
- PASTEUR, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, Paris, 75005, France
- Sony Computer Science Laboratories, Paris, 75005, France
| | - Ian Coghill
- PASTEUR, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, Paris, 75005, France
| | - Mhairi L H Davidson
- Institut de biologie de l'École normale supérieure (IBENS), École normale supérieure, CNRS, INSERM, Université PSL, Paris, 75005, France
| | - Romain Billon
- Jardin des Plantes de Paris, Museum National d'Histoire Naturelle, Paris, 75005, France
| | - Fredy Barneche
- Institut de biologie de l'École normale supérieure (IBENS), École normale supérieure, CNRS, INSERM, Université PSL, Paris, 75005, France
| | - Dusan Lazar
- Department of Biophysics, Faculty of Science, Palacký University, Olomouc, 77900, Czech Republic
| | - Thomas Le Saux
- PASTEUR, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, Paris, 75005, France
| | - Ludovic Jullien
- PASTEUR, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, Paris, 75005, France
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3
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Rapacz M, Szewczyk-Taranek B, Bani I, Marcinkowski P. The fitness of pelargonium cuttings affects the relationship between the photochemical activity of the photosynthetic apparatus and rooting ability. Sci Rep 2024; 14:19716. [PMID: 39181951 PMCID: PMC11344810 DOI: 10.1038/s41598-024-70790-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024] Open
Abstract
Pelargoniums cultivated for ornamental purposes rely on efficient vegetative propagation. This study researched applicability of chlorophyll fluorescence for validating the physiological conditions of pelargonium cuttings. Results indicated a correlation between the chlorophyll fluorescence and rooting potential. The ET0/RC values were negatively correlated with the rooting efficiency between the varieties and the duration of cold storage. A negative correlation was observed between OJIP parameters, representing energy flow in thylakoids, and chlorophyll content in cuttings with lower nutritional status. The phenomenological energy fluxes for leaf cross-sections and the number of active PSII reaction centers in the not-excited state (RC/CS0) increase with raised chlorophyll concentration. This imply the influence of rooting ability on the demand for photoassimilates in pelargonium cuttings, which can be detected early on through chlorophyll fluorescence analysis but not chlorophyll content measurements. Chlorophyll fluorescence evaluation, along with specific OJIP test parameters such as the performance indices PIABS and PItotal, prove useful for predicting rooting efficiency in relation to the nutritional status of cuttings, suggesting the effects of cuttings cold storage and discerning varietal differences in rooting. This study establishes the pragmatic application of chlorophyll fluorescence assessment for elucidating the physiological intricacies of pelargonium cuttings and factors influencing rooting efficiency.
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Affiliation(s)
- Marcin Rapacz
- Department of Plant Breeding, Physiology and Seed Science, University of Agriculture in Kraków, Mickiewicza 21, 31-120, Kraków, Poland
| | - Bożena Szewczyk-Taranek
- Department of Ornamental Plants and Garden Art, University of Agriculture in Kraków, Mickiewicza 21, 31-120, Kraków, Poland.
| | - Ipsa Bani
- Department of Plant Breeding, Physiology and Seed Science, University of Agriculture in Kraków, Mickiewicza 21, 31-120, Kraków, Poland
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4
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Zhou R, Xu J, Li L, Yin Y, Xue B, Li J, Sun F. Exploration of the Effects of Cadmium Stress on Photosynthesis in Oenanthe javanica (Blume) DC. TOXICS 2024; 12:307. [PMID: 38787086 PMCID: PMC11125355 DOI: 10.3390/toxics12050307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 05/25/2024]
Abstract
Cadmium ion (Cd2+) stress is a major abiotic stressor affecting plant photosynthesis. However, the impact of sustained high-concentration Cd stress on the photosynthetic electron transport chain of aquatic plants is currently unclear. Here, prompt fluorescence (PF), delayed fluorescence (DF), and P700 signals were simultaneously measured to investigate the effect of Cd stress on photosynthesis in water dropwort [Oenanthe javanica (Blume) DC.]. We aimed to elucidate how Cd stress continuously affects the electron transport chain in this species. The PF analysis showed that with prolonged Cd stress, the FJ, FI and FP steadily decreased, accompanied by a positive shift in the K-band and L-band. Moreover, JIP-test parameters, including TRO/ABS, ABS/CSO, TRO/CSO and PIABS, were significantly reduced. The P700 signals showed that exposure to Cd stress hindered both the fast decrease and slow increase phases of the MR transient, ultimately resulting in a gradual reduction in both VPSI and VPSII-PSI. The DF analysis showed a gradual decrease in the I1 and I2 values as the duration of stress from Cd increased. The above results suggested that Cd stress affected the photosynthetic electron transport in water dropwort by influencing the amount of active PSII and PSI, primarily affecting PSII RCs in the early to mid-stages and PSI reductive activity in the later stage.
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Affiliation(s)
- Ronghua Zhou
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
| | - Jun Xu
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
| | - Liangjun Li
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China;
| | - Yulai Yin
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
| | - Bowen Xue
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
| | - Jingjing Li
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
| | - Fangfang Sun
- Suzhou Academy of Agricultural Sciences, Institute of Agricultural Sciences in Taihu Lake Region of Jiangsu, Suzhou 215105, China; (R.Z.); (J.X.); (B.X.); (J.L.)
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5
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Shah G, Bhatt U, Singh H, Kumar D, Sharma J, Strasser RJ, Soni V. Ecotoxicological assessment of cigarette butts on morphology and photosynthetic potential of Azolla pinnata. BMC PLANT BIOLOGY 2024; 24:300. [PMID: 38637728 PMCID: PMC11061998 DOI: 10.1186/s12870-024-04991-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 04/05/2024] [Indexed: 04/20/2024]
Abstract
Cigarette butts (CBs) have become the most ubiquitous form of anthropogenic litter globally. CBs contain various hazardous chemicals that persist in the environment for longer period. These substances are susceptible to leaching into the environment through waterways. The recent study was aimed to evaluate the effects of disposed CBs on the growth and development of Azolla pinnata, an aquatic plant. It was found that after a span of 6 days, the root length, surface area, number of fronds, and photosynthetic efficacy of plant were considerably diminished on the exposure of CBs (concentrations 0 to 40). The exposure of CBs led to a decrease in the FM, FV/F0, and φP0, in contrast, the φD0 increased in response to CBs concentration. Moreover, ABS/CSm, TR0/CSm, and ET0/CSm displayed a negative correlation with CB-induced chemical stress. The performance indices were also decreased (p-value ≤ 0.05) at the highest concentration of CBs. LD50 and LD90 represent the lethal dose, obtained value for LD50 is 20.30 CBs and LD90 is 35.26 CBs through probit analysis. Our results demonstrate that the CBs cause irreversible damage of photosynthetic machinery in plants and also reflect the efficacy of chlorophyll a fluorescence analysis and JIP test for assessing the toxicity of CBs in plants.
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Affiliation(s)
- Garishma Shah
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001
| | - Upma Bhatt
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001
| | - Hanwant Singh
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001
| | - Deepak Kumar
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001
| | - Jyotshana Sharma
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001
| | - Reto J Strasser
- Plant Bioenergetics Laboratory, University of Geneva, Jussy, 1254, Geneva, Switzerland
| | - Vineet Soni
- Plant Bioenergetics and Biochemistry Lab, Mohanlal Sukhadia University, Udaipur, Rajasthan, India, 313001.
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Cheng H, Wan Z, Xu Y, Shen J, Li X, Jin S. Transcriptome and photosynthetic analyses provide new insight into the molecular mechanisms underlying heat stress tolerance in Rhododendron × pulchrum Sweet. TREE PHYSIOLOGY 2024; 44:tpad133. [PMID: 37930230 DOI: 10.1093/treephys/tpad133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
Rhododendron species provide excellent ornamental use worldwide, yet heat stress (HS) is one of the major threats to their cultivation. However, the intricate mechanisms underlying the photochemical and transcriptional regulations associated with the heat stress response in Rhododendron remain relatively unexplored. In this study, the analyses of morphological characteristics and chlorophyll fluorescence (ChlF) kinetics showed that HS (40 °C/35 °C) had a notable impact on both the donor's and acceptor's sides of photosystem II (PSII), resulting in reduced PSII activity and electron transfer capacity. The gradual recovery of plants observed following a 5-day period of culture under normal conditions indicates the reversible nature of the HS impact on Rhododendron × pulchrum. Analysis of transcriptome data unveiled noteworthy trends: four genes associated with photosynthesis-antenna protein synthesis (LHCb1, LHCb2 and LHCb3) and the antioxidant system (glutamate-cysteine ligase) experienced significant down-regulation in the leaves of R. × pulchrum during HS. Conversely, aseorbate peroxidase and glutathione S-transferase TAU 8 demonstrated an up-regulated pattern. Furthermore, six down-regulated genes (phos-phoenolpyruvate carboxylase 4, sedoheptulose-bisphosphatase, ribose-5-phosphate isomerase 2, high cyclic electron flow 1, beta glucosidase 32 and starch synthase 2) and two up-regulated genes (beta glucosidase 2 and UDP-glucose pyrophosphorylase 2) implicated in photosynthetic carbon fixation and starch/sucrose metabolism were identified during the recovery process. To augment these insights, a weighted gene co-expression network analysis yielded a co-expression network, pinpointing the hub genes correlated with ChlF dynamics' variation trends. The cumulative results showed that HS inhibited the synthesis of photosynthesis-antenna proteins in R. × pulchrum leaves. This disruption subsequently led to diminished photochemical activities in both PSII and PSI, albeit with PSI exhibiting heightened thermostability. Depending on the regulation of the reactive oxygen species scavenging system and heat dissipation, photoprotection sustained the recoverability of R. × pulchrum to HS.
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Affiliation(s)
- Hefeng Cheng
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
| | - Ziyun Wan
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
| | - Yanxia Xu
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
| | - Jianshuang Shen
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
- Hangzhou Animation & Game College, Hangzhou Vocational & Technical College, Hangzhou 310018, China
| | - Xueqin Li
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
| | - Songheng Jin
- Jiyang College, Zhejiang A&F University, Zhuji 311800, China
- School of Life Science and Health, Huzhou College , Huzhou 313000, China
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7
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Veena M, Sameena PP, Sarath NG, Noble L, Aswathi KPR, Amritha MS, Johnson R, Joel JM, Anjitha KS, Hou HJM, Puthur JT. Revelations on photosystem II, thermoluminescence, and artificial photosynthesis: a retrospective of Govindjee from fundamentals to applications. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:1225-1238. [PMID: 38024954 PMCID: PMC10678879 DOI: 10.1007/s12298-023-01373-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/08/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023]
Abstract
Photosynthesis, as one of the most important chemical reactions, has powered our planet for over four billion years on a massive scale. This review summarizes and highlights the major contributions of Govindjee from fundamentals to applications in photosynthesis. His research included primary photochemistry measurements, in the picosecond time scale, in both Photosystem I and II and electron transport leading to NADP reduction, using two light reactions. He was the first to suggest the existence of P680, the reaction center of PSII, and to prove that it was not an artefact of Chlorophyll a fluorescence. For most photobiologists, Govindjee is best known for successfully exploiting Chlorophyll a fluorescence to understand the various steps in photosynthesis as well as to predict plant productivity. His contribution in resolving the controversy on minimum number of quanta in favor of 8-12 vs 3-4, needed for the evolution of one molecule of oxygen, is a milestone in the area of photosynthesis research. Furthermore, together with Don DeVault, he is the first to provide the correct theory of thermoluminescence in photosynthetic systems. His research productivity is very high: ~ 600 published articles and total citations above 27,000 with an h-index of 82. He is a recipient of numerous awards and honors including a 2022: Lifetime Achievement Award of the International Society of Photosynthesis Research. We hope that the retrospective of Govindjee described in this work will inspire and stimulate the readers to continue probing the photosynthetic apparatuses with new discoveries and breakthroughs.
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Affiliation(s)
- Mathew Veena
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - P. P. Sameena
- Department of Botany, PSMO College, Tirurangadi, Malappuram, Kerala 676 306 India
| | - Nair G. Sarath
- Department of Botany, Mar Athanasius College, Kothamangalam College, P.O., Kothamangalam, Kerala 686 666 India
| | - Louis Noble
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - K. P. Raj Aswathi
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - M. S. Amritha
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - Riya Johnson
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - Joy M. Joel
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - K. S. Anjitha
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
| | - Harvey J. M. Hou
- Laboratory of Forensic Analysis and Photosynthesis, Department of Physical and Forensic Sciences, Alabama State University, Montgomery, AL 36104 USA
| | - Jos T. Puthur
- Plant Physiology and Biochemistry Division, Department of Botany, University of Calicut, C. U. Campus, P.O. Malappuram, Kerala 673635 India
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El-Mejjaouy Y, Belmrhar L, Zeroual Y, Dumont B, Mercatoris B, Oukarroum A. PCA-based detection of phosphorous deficiency in wheat plants using prompt fluorescence and 820 nm modulated reflection signals. PLoS One 2023; 18:e0286046. [PMID: 37224124 DOI: 10.1371/journal.pone.0286046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/07/2023] [Indexed: 05/26/2023] Open
Abstract
Phosphorus deficiency induces biochemical and morphological changes which affect crop yield and production. Prompt fluorescence signal characterizes the PSII activity and electron transport from PSII to PSI, while the modulated light reflection at 820 (MR 820) nm investigates the redox state of photosystem I (PSI) and plastocyanin (PC). Therefore, combining information from modulated reflection at 820 nm with chlorophyll a fluorescence can potentially provide a more complete understanding of the photosynthetic process and integrating other plant physiological measurements may help to increase the accuracy of detecting the phosphorus deficiency in wheat leaves. In our study, we combined the chlorophyll a fluorescence and MR 820 signals to study the response of wheat plants to phosphorus deficiency as indirect tools for phosphorus plant status characterization. In addition, we studied the changes in chlorophyll content index, stomatal conductance (gs), root morphology, and biomass of wheat plants. The results showed an alteration in the electron transport chain as a specific response to P deficiency in the I-P phase during the reduction of the acceptor side of PSI. Furthermore, P deficiency increased parameters related to the energy fluxes per reaction centers, namely ETo/RC, REo/RC, ABS/RC, and DIo/RC. P deficiency increased the values of MRmin and MRmax and decreased νred, which implies that the reduction of PSI and PC became slower as the phosphorus decreased. The principal component analysis of the modulated reflection and chlorophyll a fluorescence parameters, with the integration of the growth parameters as supplementary variables, accounted for over 71% of the total variance in our phosphorus data using two components and provided a reliable information on PSII and PSI photochemistry under P deficiency.
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Affiliation(s)
- Yousra El-Mejjaouy
- AgoBioSciences, Plant Stress Physiology Laboratory, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
- Biosystems Dynamics and Exchanges, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Laila Belmrhar
- AgoBioSciences, Plant Stress Physiology Laboratory, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Youssef Zeroual
- AgoBioSciences, Plant Stress Physiology Laboratory, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
| | - Benjamin Dumont
- Pant Sciences / Crop Science, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Benoît Mercatoris
- Biosystems Dynamics and Exchanges, TERRA Teaching and Research Centre, Gembloux Agro-Bio Tech, University of Liege, Gembloux, Belgium
| | - Abdallah Oukarroum
- AgoBioSciences, Plant Stress Physiology Laboratory, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
- High Throughput Multidisciplinary Research Laboratory, University Mohammed VI Polytechnic (UM6P), Benguerir, Morocco
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9
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Jajoo A, Subramanyam R, Garab G, Allakhverdiev SI. Honoring two stalwarts of photosynthesis research: Eva-Mari Aro and Govindjee. PHOTOSYNTHESIS RESEARCH 2023:10.1007/s11120-022-00988-7. [PMID: 36847891 DOI: 10.1007/s11120-022-00988-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 11/21/2022] [Indexed: 06/18/2023]
Abstract
On behalf of the entire photosynthesis community, it is an honor, for us, to write about two very eminent scientists who were recently recognised with a Lifetime Achievement Award from the International Society of Photosynthesis Research (ISPR) on August 5, 2022; this prestigious Award was given during the closing ceremony of the 18th International Congress on Photosynthesis Research in Dunedin, New Zealand. The awardees were: Professor Eva-Mari Aro (Finland) and Professor Emeritus Govindjee Govindjee (USA). One of the authors, Anjana Jajoo, is especially delighted to be a part of this tribute to professors Aro and Govindjee as she was lucky enough to have worked with both of them.
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Affiliation(s)
- Anjana Jajoo
- Photosynthesis Laboratory, School of Life Sciences, Devi Ahilya University, Indore, 452001, India.
| | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Győző Garab
- Institute of Plant Biology, Biological Research Centre, Eötvös Loránd Research Network, Szeged, Hungary.
- Department of Physics, Faculty of Science, University of Ostrava, Ostrava, Czech Republic.
| | - Suleyman I Allakhverdiev
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia.
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10
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Oliveira GC, Broetto SG, Pereira OJ, Penha JDS, Lopes NGM, Silva DM. Effects of different levels of metal exposure and precipitation regimes on chlorophyll a fluorescence parameters in a coastal Brazilian restinga species. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2022. [DOI: 10.1016/j.jpap.2022.100153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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11
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Pietro WJ, Mermut O. A SiPM-Enabled Portable Delayed Fluorescence Photon Counting Device: Climatic Plant Stress Biosensing. BIOSENSORS 2022; 12:817. [PMID: 36290954 PMCID: PMC9599934 DOI: 10.3390/bios12100817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
A portable and sensitive time-resolved biosensor for capturing very low intensity light emission is a promising avenue to study plant delayed fluorescence. These weak emissions provide insight on plant health and can be useful in plant science as well as in the development of accurate feedback indicators for plant growth and yield in applications of agricultural crop cultivation. A field-based delayed fluorescence device is also desirable to enable monitoring of plant stress response to climate change. Among basic techniques for the detection of rapidly fluctuating low intensity light is photon counting. Despite its vast utility, photon counting techniques often relying on photomultiplier tube (PMT) technology, having restricted use in agricultural and environment measurements of plant stress outside of the laboratory setting, mainly due to the prohibitive cost of the equipment, high voltage nature, and the complexity of its operation. However, recent development of the new generation solid-state silicon photomultiplier (SiPM) single photon avalanche diode array has enabled the availability of high quantum efficiency, easy-to-operate, compact, photon counting systems which are not constrained to sophisticated laboratories, and are accessible owing to their low-cost. In this contribution, we have conceived, fabricated and validated a novel SiPM-based photon counting device with integrated plug-and-play excitation LED, all housed inside a miniaturized sample chamber to record weak delayed fluorescence lifetime response from plant leaves subjected to varying temperature condition and drought stress. Findings from our device show that delayed fluorescence reports on the inactivation to the plant's photosystem II function in response to unfavorable acute environmental heat and cold shock stress as well as chronic water deprivation. Results from our proof-of-concept miniaturized prototype demonstrate a new, simple and effective photon counting instrument is achieved, one which can be deployed in-field to rapidly and minimally invasively assess plant physiological growth and health based on rapid, ultra-weak delayed fluorescence measurements directly from a plant leaf.
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Affiliation(s)
- William J. Pietro
- Department of Chemistry, York University, 4700 Keele St., Toronto, ON M3J 1P3, Canada
| | - Ozzy Mermut
- Department of Physics and Astronomy, York University, 4700 Keele St., Toronto, ON M3J 1P3, Canada
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Performance of chlorophyll a fluorescence parameters in Lemna minor under heavy metal stress induced by various concentration of copper. Sci Rep 2022; 12:10620. [PMID: 35739228 PMCID: PMC9226353 DOI: 10.1038/s41598-022-14985-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 06/16/2022] [Indexed: 11/08/2022] Open
Abstract
The objective of the present investigation was to understand the efficacy of chlorophyll fluorescence analysis and to identify the specific photosynthetic parameters for early and rapid detection of Cu-induced HM-stress in plants. Aquatic angiosperm Lemna minor was exposed to various concentrations (0-40 µM) of Cu. We observed that the FV/FO (Efficiency of the water-splitting complex on the donor side of PSII), quantum yield for electron transport, and quantum yield of primary photochemistry were decreased however, dissipated quantum yield was increased with Cu concentration. ABS/CSM, TRO/CSM, ETO/CSM and maximum quantum yield were displayed the dose-response relationship under Cu stress. Performance indexes were increased initially due to the beneficial effects of Cu at lower concentration while decreased significantly (p ≤ 0.05) at highest concentration of Cu. The outcomes of the present research revealed that the ChlF analysis is very sensitive tool that can be used to determine the toxicity of heavy metals in plants.
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13
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Using Fluorescence Spectroscopy to Detect Rot in Fruit and Vegetable Crops. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12073391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
The potential of the method of fluorescence spectroscopy for the detection of damage and diseases of fruits and vegetables was studied. For this purpose, the spectra of fluorescence of healthy and rotten apples and potatoes have been investigated. Excitation of samples was carried out using a continuous semiconductor laser with a wavelength of 405 nm and a pulsed solid-state laser with a wavelength of 527 nm. Peaks in the region of 600–700 nm in rotten samples were shifted towards shorter wavelengths for most samples in both modes of spectroscopy. The differences in the fluorescence spectra of a healthy and rotten apple surface have been revealed to be in the spectral range of 550–650 nm for 405 nm continuous excitation. When exposed to a laser in a pulsed mode (527 nm), the contribution of the 630 nm peak in the spectrum increases in rotten samples. The observed differences make it possible to use this method for separating samples of healthy and rotten fruits and vegetables. The article paid attention to the influence of many factors such as sample thickness, time after excitation, contamination by soil and dust, cultivar, and location of the probing on fluorescence spectra.
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Detection and Analysis of Circadian Rhythms Via Prompt Chlorophyll Fluorescence. Methods Mol Biol 2021. [PMID: 34674165 DOI: 10.1007/978-1-0716-1912-4_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Monitoring prompt chlorophyll fluorescence (F) by making consecutive pulse amplitude modulation (PAM) measurements is a noninvasive, nondestructive, potentially high-throughput technique for evaluating circadian rhythms in diverse plant species. The technique is also less labor-intensive than many others currently used and requires no transgenic procedures.
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Farhat N, Kouas W, Braun HP, Debez A. Stability of thylakoid protein complexes and preserving photosynthetic efficiency are crucial for the successful recovery of the halophyte Cakile maritima from high salinity. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:177-190. [PMID: 34116337 DOI: 10.1016/j.plaphy.2021.05.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/24/2021] [Indexed: 06/12/2023]
Abstract
Plants native to extreme habitats often face changes in environmental conditions such as salinity level and water availability. In response, plants have evolved efficient mechanisms allowing them to survive or recover. In the present work, effects of high salinity and salt-stress release were studied on the halophyte Cakile maritima. Four week-old plants were either cultivated at 0 mM NaCl or 200 mM NaCl. After one month of treatment, plants were further irrigated at either 0 mM NaCl, 200 mM NaCl, or rewatered to 0 mM NaCl (stress release). Upon salt stress, C. maritima plants exhibited reduced biomass production and shoot hydration which were associated with a decrease in the amount of chlorophyll a and b. However, under the same stressful conditions a significant increase of anthocyanin and malonyldialdehyde concentrations was noticed. Salt-stressed plants were able to maintain stable protein complexes of thylakoid membranes. Measurement of chlorophyll fluorescence and P700 redox state showed that PSI was more susceptible for damage by salinity than PSII. PSII machinery was significantly enhanced under saline conditions. All measured parameters were partially restored under salt-stress release conditions. Photoinhibition of PSI was also reversible and C. maritima was able to successfully re-establish PSI machinery indicating the high contribution of chloroplasts in salt tolerance mechanisms of C. maritima. Overall, to overcome high salinity stress, C. maritima sets a cascade of physio-biochemical and molecular pathways. Chloroplasts seem to act as metabolic centers as part of this adaptive process enabling growth restoration in this halophyte following salt stress release.
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Affiliation(s)
- Nèjia Farhat
- Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, (CBBC), P. O. Box 901, 2050, Hammam-Lif, Tunisia; Department of Plant Proteomics, Institute of Plant Genetics, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany.
| | - Wafa Kouas
- Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, (CBBC), P. O. Box 901, 2050, Hammam-Lif, Tunisia
| | - Hans-Peter Braun
- Department of Plant Proteomics, Institute of Plant Genetics, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany
| | - Ahmed Debez
- Laboratory of Extremophile Plants, Center of Biotechnology of Borj Cedria, (CBBC), P. O. Box 901, 2050, Hammam-Lif, Tunisia; Department of Plant Proteomics, Institute of Plant Genetics, Leibniz University of Hannover, Herrenhäuser Str. 2, 30419, Hannover, Germany
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Naumova EV, Vladimirov YA, Beloussov LV, Tuchin VV, Volodyaev IV. Methods of Studying Ultraweak Photon Emission from Biological Objects: I. History, Types and Properties, Fundamental and Application Significance. Biophysics (Nagoya-shi) 2021. [DOI: 10.1134/s0006350921050158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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17
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Ni L, Li X, Xu C, Li Y, Wu H, Du C, Li S. Stress of Artemisinin Sustained-Release Granules on Photosystem II, Reactive Oxygen Species and Metabolic Activity of Microcystis aeruginosa Cells. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:343-350. [PMID: 34251462 DOI: 10.1007/s00128-021-03327-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
The inhibitory mechanisms of artemisinin anti-algae sustained-release granules (AASG) on algal cells at cytoplasmic level were investigated. The results showed that 0.2 g L-1 AASG could effectively inhibit the growth of Microcystis aeruginosa (M.aeruginosa). The stress of 0.2 g L-1 AASG changed the excitation energy distribution pattern of Photosystem II (PSII) of algal cells, which showed the increase of heat dissipation share and the inhibition of physiological activities related to PSII. At the same time, AASG induced a large amount of reactive oxygen species (ROS), which aggravated the membrane lipid peroxidation and caused serious damage to algae cell membrane. AASG also resulted in the decrease of esterase activity and alkaline phosphatase activity (APA) in algal cells. Results showed that AASG inhibited algal growth by exerting adverse effects on PSII, ROS and metabolic activity of M.aeruginosa.
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Affiliation(s)
- Lixiao Ni
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Xianglan Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Chu Xu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Yan Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Hanqi Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Cunhao Du
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
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Rosatto S, Mariotti M, Romeo S, Roccotiello E. Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10030508. [PMID: 33803420 PMCID: PMC7998499 DOI: 10.3390/plants10030508] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/06/2021] [Accepted: 03/06/2021] [Indexed: 05/04/2023]
Abstract
The soil-root interface is the micro-ecosystem where roots uptake metals. However, less than 10% of hyperaccumulators' rhizosphere has been examined. The present study evaluated the root and shoot response to nickel in hyperaccumulator and non-hyperaccumulator species, through the analysis of root surface and biomass and the ecophysiological response of the related aboveground biomass. Ni-hyperaccumulators Alyssoides utriculata (L.) Medik. and Noccaea caerulescens (J. Presl and C. Presl) F.K. Mey. and non-hyperaccumulators Alyssum montanum L. and Thlaspi arvense L. were grown in pot on Ni-spiked soil (0-1000 mg Ni kg-1, total). Development of root surfaces was analysed with ImageJ; fresh and dry root biomass was determined. Photosynthetic efficiency was performed by analysing the fluorescence of chlorophyll a to estimate the plants' physiological conditions at the end of the treatment. Hyperaccumulators did not show a Ni-dependent decrease in root surfaces and biomass (except Ni 1000 mg kg-1 for N. caerulescens). The non-hyperaccumulator A. montanum suffers metal stress which threatens plant development, while the excluder T. arvense exhibits a positive ecophysiological response to Ni. The analysis of the root system, as a component of the rhizosphere, help to clarify the response to soil nickel and plant development under metal stress for bioremediation purposes.
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Apraez Muñoz JJ, de Almeida AAF, Pirovani CP, Ahnert D, Baligar VC. Mitigation of Pb toxicity by Mn in seedling of the cacao clonal CCN 51 genotype grown in soil: physiological, biochemical, nutritional and molecular responses. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:240-256. [PMID: 33528689 DOI: 10.1007/s10646-021-02348-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
Lead (Pb) is a highly toxic metal for humans, animals and plants even at low concentrations in the soil. The ingestion of chocolate produced from contaminated beans can contribute to consumer exposure to Pb. While, Mn is an element essential for plants and participates as enzymatic cofactors in several metabolic pathways. The objective of this study was to evaluate the influence of Mn on mitigation of Pb toxicity in seedling of the cacao clonal CCN 51 genotype grown in soils with different doses of Pb, Mn and Mn+Pb, through physiological, biochemical, molecular and nutritional responses. It was found that the seedling of the cacao clonal CCN 51 genotype grown in soils with high Pb, Mn and Mn+Pb contents accumulated these heavy metals in the roots and leaves. Mn doses reduced the Pb uptake by root system and prevented that the Pb accumulated at toxic levels in the roots and leaves of the plants. High doses of Pb applied in soil were highly toxic to the plants, leading, in some cases, them to death. However, no Mn toxicity was observed in cocoa plants, even at high doses in the soil. Uptake of Pb and Mn by the roots and its transport into the aerial part of the plant promoted changes in photosynthesis, leaf gas exchange, respiration, carboxylation and in the instantaneous efficiency of carboxylation, reducing in the treatments with the highest concentrations of Pb, and the emission of chlorophyll fluorescence, affecting the efficiency of photosystem 2 and the production of photoassimilates. Besides that, Pb, Mn and Mn+Pb toxicities activated defense mechanisms in plants that alter the gene expression of met, psbA and psbO, increasing in plants subjected to high concentrations of Pb and the activity of the enzymes involved in the cellular detoxification of excess ROS at the leaf level. In addition, high uptake of Mn by root system was found to reduced Pb uptake in plants grown with Mn+Pb in the soil. Therefore, application of Mn in the soil can be used to mitigate the Pb toxicity in seedling of the cacao clonal CCN 51 genotype grown in contaminated soils.
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Affiliation(s)
- Jose Julian Apraez Muñoz
- State University of Santa Cruz, Department of Biological Sciences, Rodovia Jorge Amado, km 16, 45662-900, Ilhéus, BA, Brazil.
| | - Alex-Alan Furtado de Almeida
- State University of Santa Cruz, Department of Biological Sciences, Rodovia Jorge Amado, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Carlos Priminho Pirovani
- State University of Santa Cruz, Department of Biological Sciences, Rodovia Jorge Amado, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Dário Ahnert
- State University of Santa Cruz, Department of Biological Sciences, Rodovia Jorge Amado, km 16, 45662-900, Ilhéus, BA, Brazil
| | - Virupax C Baligar
- USDA-ARS-Beltsville Agricultural Research Center, Beltsville, MD, USA
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Effects of Different Planting Densities on Photosynthesis in Maize Determined via Prompt Fluorescence, Delayed Fluorescence and P700 Signals. PLANTS 2021; 10:plants10020276. [PMID: 33572625 PMCID: PMC7910836 DOI: 10.3390/plants10020276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 12/03/2022]
Abstract
The mutual shading among individual field-grown maize plants resulting from high planting density inevitably reduces leaf photosynthesis, while regulating the photosynthetic transport chain has a strong impact on photosynthesis. However, the effect of high planting density on the photosynthetic electron transport chain in maize currently remains unclear. In this study, we simultaneously measured prompt chlorophyll a fluorescence (PF), modulated 820 nm reflection (MR) and delayed chlorophyll a fluorescence (DF) in order to investigate the effect of high planting density on the photosynthetic electron transport chain in two maize hybrids widely grown in China. PF transients demonstrated a gradual reduction in their signal amplitude with increasing planting density. In addition, high planting density induced positive J-step and G-bands of the PF transients, reduced the values of PF parameters PIABS, RC/CSO, TRO/ABS, ETO/TRO and REO/ETO, and enhanced ABS/RC and N. MR kinetics showed an increase of their lowest point with increasing high planting density, and thus the values of MR parameters VPSI and VPSII-PSI were reduced. The shapes of DF induction and decay curves were changed by high planting density. In addition, high planting density reduced the values of DF parameters I1, I2, L1 and L2, and enhanced I2/I1. These results suggested that high planting density caused harm on multiple components of maize photosynthetic electron transport chain, including an inactivation of PSII RCs, a blocked electron transfer between QA and QB, a reduction in PSI oxidation and re-reduction activities, and an impaired PSI acceptor side. Moreover, a comparison between PSII and PSI activities demonstrated the greater effect of plant density on the former.
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21
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Możdżeń K, Barabasz-Krasny B, Zandi P. Effect of Long-Term of He-Ne Laser Light Irradiation on Selected Physiological Processes of Triticale. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1703. [PMID: 33287383 PMCID: PMC7761860 DOI: 10.3390/plants9121703] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 12/23/2022]
Abstract
In agriculture, the bio-stimulating properties of laser light increase the yielding capacity of crop species. The experiment aimed to determine the pre-sowing effect of irradiation time with laser He-Ne red light of triticale grains (×Triticosecale Wittm. ex A.Camus) on germination and selected morphological and physiological parameters of seedlings and plants grown from them. The highest values of germination indexes were found for grains irradiated with laser for 3 h. In relation to the control, the elongation growth of seedlings was stimulated in grains irradiated with light for 3 h and inhibited for 24 h. The values of the fresh and dry mass of seedlings changed depending on the exposure time. He-Ne light did not significantly affect the degree of destabilization of seedling cell membranes. Biometric analysis of plants grown from irradiated grains showed different reactions of triticale organs to the irradiation time. Red light clearly stimulated the increase in the value of organ mass. Chlorophyll content in leaves was higher in plants grown from grains irradiated for 3 h. Photosynthetic activity did not change significantly relative to the control. The fluorescence emission indexes were mostly lower than in the control, which indicated a positive effect of the laser. In general, the red light of the laser stimulated the morphology and physiology of seedlings and plants, although, for some features, long exposure to red light caused a slight reduction effect.
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Affiliation(s)
- Katarzyna Możdżeń
- Institute of Biology, Pedagogical University of Krakow, 30-084 Kraków, Poland;
| | | | - Peiman Zandi
- International Faculty of Applied Technology, Yibin University, Yibin 644600, Sichuan, China;
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Science, Beijing 100081, China
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22
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Szopiński M, Sitko K, Rusinowski S, Zieleźnik-Rusinowska P, Corso M, Rostański A, Rojek-Jelonek M, Verbruggen N, Małkowski E. Different strategies of Cd tolerance and accumulation in Arabidopsis halleri and Arabidopsis arenosa. PLANT, CELL & ENVIRONMENT 2020; 43:3002-3019. [PMID: 32890409 DOI: 10.1111/pce.13883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 08/18/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Pseudometallophytes are commonly used to study the evolution of metal tolerance and accumulation traits in plants. Within the Arabidopsis genus, the adaptation of Arabidopsis halleri to metalliferous soils has been widely studied, which is not the case for the closely related species Arabidopsis arenosa. We performed an in-depth physiological comparison between the A. halleri and A. arenosa populations from the same polluted site, together with the geographically close non-metallicolous (NM) populations of both species. The ionomes, growth, photosynthetic parameters and pigment content were characterized in the plants that were growing on their native site and in a hydroponic culture under Cd treatments. In situ, the metallicolous (M) populations of both species hyperaccumulated Cd and Zn. The NM population of A. halleri hyperaccumulated Cd and Zn while the NM A. arenosa did not. In the hydroponic experiments, the NM populations of both species accumulated more Cd in their shoots than the M populations. Our research suggests that the two Arabidopsis species evolved different strategies of adaptation to extreme metallic environments that involve fine regulation of metal homeostasis, adjustment of the photosynthetic apparatus and accumulation of flavonols and anthocyanins.
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Affiliation(s)
- Michał Szopiński
- Plant Ecophysiology Team, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Krzysztof Sitko
- Plant Ecophysiology Team, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | | | - Paulina Zieleźnik-Rusinowska
- Plant Ecophysiology Team, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Massimiliano Corso
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, Brussels, Belgium
| | - Adam Rostański
- Botany and Nature Protection Team, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Magdalena Rojek-Jelonek
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Nathalie Verbruggen
- Laboratory of Plant Physiology and Molecular Genetics, Université Libre de Bruxelles, Brussels, Belgium
| | - Eugeniusz Małkowski
- Plant Ecophysiology Team, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
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Piao D. On the stress-induced photon emission from organism: I, will the scattering-limited delay affect the temporal course? SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03346-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Femtosecond visible transient absorption spectroscopy of chlorophyll- f-containing photosystem II. Proc Natl Acad Sci U S A 2020; 117:23158-23164. [PMID: 32868421 DOI: 10.1073/pnas.2006016117] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The recently discovered, chlorophyll-f-containing, far-red photosystem II (FR-PSII) supports far-red light photosynthesis. Participation and kinetics of spectrally shifted far-red pigments are directly observable and separated from that of bulk chlorophyll-a We present an ultrafast transient absorption study of FR-PSII, investigating energy transfer and charge separation processes. Results show a rapid subpicosecond energy transfer from chlorophyll-a to the long-wavelength chlorophylls-f/d The data demonstrate the decay of an ∼720-nm negative feature on the picosecond-to-nanosecond timescales, coinciding with charge separation, secondary electron transfer, and stimulated emission decay. An ∼675-nm bleach attributed to the loss of chl-a absorption due to the formation of a cation radical, PD1 +•, is only fully developed in the nanosecond spectra, indicating an unusually delayed formation. A major spectral feature on the nanosecond timescale at 725 nm is attributed to an electrochromic blue shift of a FR-chlorophyll among the reaction center pigments. These time-resolved observations provide direct experimental support for the model of Nürnberg et al. [D. J. Nürnberg et al., Science 360, 1210-1213 (2018)], in which the primary electron donor is a FR-chlorophyll and the secondary donor is chlorophyll-a (PD1 of the central chlorophyll pair). Efficient charge separation also occurs using selective excitation of long-wavelength chlorophylls-f/d, and the localization of the excited state on P720* points to a smaller (entropic) energy loss compared to conventional PSII, where the excited state is shared over all of the chlorin pigments. This has important repercussions on understanding the overall energetics of excitation energy transfer and charge separation reactions in FR-PSII.
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Surface Canopy Position Determines the Photosystem II Photochemistry in Invasive and Native Prosopis Congeners at Sharjah Desert, UAE. FORESTS 2020. [DOI: 10.3390/f11070740] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Plants have evolved photoprotective mechanisms in order to counteract the damaging effects of excess light in hyper-arid desert environments. We evaluated the impact of surface canopy positions on the photosynthetic adjustments and chlorophyll fluorescence attributes (photosystem II photochemistry, quantum yield, fluorescence quenching, and photon energy dissipation), leaf biomass and nutrient content of sun-exposed leaves at the south east (SE canopy position) and shaded-leaves at the north west (NW canopy position) in the invasive Prosopis juliflora and native Prosopis cineraria in the extreme environment (hyper-arid desert area, United Arab Emirates (UAE)). The main aim of this research was to study the photoprotection mechanism in invasive and native Prosopis congeners via the safe removal—as thermal energy—of excess solar energy absorbed by the light collecting system, which counteracts the formation of reactive oxygen species. Maximum photosynthetic efficiency (Fv/Fm) from dark-adapted leaves in P. juliflora and P. cineraria was higher on NW than SE canopy position while insignificant difference was observed within the two Prosopis congeners. Greater quantum yield was observed in P. juliflora than P. cineraria on the NW canopy position than SE. With the change of canopy positions from NW to SE, the reduction of the PSII reaction center activity in the leaves of both Prosopis congeners was accelerated. On the SE canopy position, a significant decline in the electron transport rate (ETR) of in the leaves of both Prosopis congeners occurred, which might be due to the blockage of electron transfer from QA to QB on the PSII acceptor side. On the SE canopy position; Prosopis leaves dissipated excess light energy by increasing non-photochemical quenching (NPQ). However, in P. cineraria, the protective ability of NPQ decreased, which led to the accumulation of excess excitation energy (1 − qP)/NPQ and the aggravation of photoinhibition. The results also explain the role of different physiological attributes contributing to invasiveness of P. juliflora and to evaluate its liaison between plasticity of these characters and invasiveness.
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Yan K, He W, Bian L, Zhang Z, Tang X, An M, Li L, Han G. Salt adaptability in a halophytic soybean (Glycine soja) involves photosystems coordination. BMC PLANT BIOLOGY 2020; 20:155. [PMID: 32276592 PMCID: PMC7149873 DOI: 10.1186/s12870-020-02371-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 03/30/2020] [Indexed: 05/11/2023]
Abstract
BACKGROUND Glycine soja is a halophytic soybean native to saline soil in Yellow River Delta, China. Photosystem I (PSI) performance and the interaction between photosystem II (PSII) and PSI remain unclear in Glycine soja under salt stress. This study aimed to explore salt adaptability in Glycine soja in terms of photosystems coordination. RESULTS Potted Glycine soja was exposed to 300 mM NaCl for 9 days with a cultivated soybean, Glycine max, as control. Under salt stress, the maximal photochemical efficiency of PSII (Fv/Fm) and PSI (△MR/MR0) were significantly decreased with the loss of PSI and PSII reaction center proteins in Glycine max, and greater PSI vulnerability was suggested by earlier decrease in △MR/MR0 than Fv/Fm and depressed PSI oxidation in modulated 820 nm reflection transients. Inversely, PSI stability was defined in Glycine soja, as △MR/MR0 and PSI reaction center protein abundance were not affected by salt stress. Consistently, chloroplast ultrastructure and leaf lipid peroxidation were not affected in Glycine soja under salt stress. Inhibition on electron flow at PSII acceptor side helped protect PSI by restricting electron flow to PSI and seemed as a positive response in Glycine soja due to its rapid recovery after salt stress. Reciprocally, PSI stability aided in preventing PSII photoinhibition, as the simulated feedback inhibition by PSI inactivation induced great decrease in Fv/Fm under salt stress. In contrast, PSI inactivation elevated PSII excitation pressure through inhibition on PSII acceptor side and accelerated PSII photoinhibition in Glycine max, according to the positive and negative correlation of △MR/MR0 with efficiency that an electron moves beyond primary quinone and PSII excitation pressure respectively. CONCLUSION Therefore, photosystems coordination depending on PSI stability and rapid response of PSII acceptor side contributed to defending salt-induced oxidative stress on photosynthetic apparatus in Glycine soja. Photosystems interaction should be considered as one of the salt adaptable mechanisms in this halophytic soybean.
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Affiliation(s)
- Kun Yan
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, P. R. China.
| | - Wenjun He
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, P. R. China
| | - Lanxing Bian
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, P. R. China
- College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Zishan Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, P. R. China
| | - Xiaoli Tang
- School of Agriculture, Ludong University, Yantai, 264025, P. R. China
| | - Mengxin An
- School of Agriculture, Ludong University, Yantai, 264025, P. R. China
| | - Lixia Li
- College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Guangxuan Han
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences(CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong, 264003, P. R. China.
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Khramov RN, Kreslavski VD, Svidchenko EA, Surin NM, Kosobryukhov AA. Influence of photoluminophore-modified agro textile spunbond on growth and photosynthesis of cabbage and lettuce plants. OPTICS EXPRESS 2019; 27:31967-31977. [PMID: 31684418 DOI: 10.1364/oe.27.031967] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
Light-converting polypropylene spunbond was first used in the study of the key physiological parameters of plants. A comparative study of the functioning of the photosynthetic apparatus and the dynamics of growth in late cabbage plants (Olga variety) and leaf lettuce (Emerald variety) was conducted using the ordinary nonwoven polypropylene fabric (spunbond) (density 30 g·m-2) and the spunbond containing a photoluminophore (PL) (1.6% yttrium oxysulfide doped with europium). The plants were grown in a glass greenhouse without spunbond and under the spunbond containing and not containing the PL that transforms a part of UV-radiation into red light radiation. The use of the spunbond led to a decrease in the rate of photosynthesis, activity of the photosystem 2, and the accumulation of plant biomass and to an increase in the stomatal conductance. By contrast to unmodified spunbond, the application of the spunbond containing the PL led to an increase in the rate of photosynthesis, the water-use efficiency (WUE), and the accumulation of the total biomass of plants by 30-50% but to a decrease in the transpiration rate and the stomatal conductance. It is assumed that the positive effect of the PL is associated with an increase in the fraction of fluorescent red light, which enhances photosynthetic activity and accelerates plant growth.
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Mohammed GH, Colombo R, Middleton EM, Rascher U, van der Tol C, Nedbal L, Goulas Y, Pérez-Priego O, Damm A, Meroni M, Joiner J, Cogliati S, Verhoef W, Malenovský Z, Gastellu-Etchegorry JP, Miller JR, Guanter L, Moreno J, Moya I, Berry JA, Frankenberg C, Zarco-Tejada PJ. Remote sensing of solar-induced chlorophyll fluorescence (SIF) in vegetation: 50 years of progress. REMOTE SENSING OF ENVIRONMENT 2019; 231:111177. [PMID: 33414568 PMCID: PMC7787158 DOI: 10.1016/j.rse.2019.04.030] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Remote sensing of solar-induced chlorophyll fluorescence (SIF) is a rapidly advancing front in terrestrial vegetation science, with emerging capability in space-based methodologies and diverse application prospects. Although remote sensing of SIF - especially from space - is seen as a contemporary new specialty for terrestrial plants, it is founded upon a multi-decadal history of research, applications, and sensor developments in active and passive sensing of chlorophyll fluorescence. Current technical capabilities allow SIF to be measured across a range of biological, spatial, and temporal scales. As an optical signal, SIF may be assessed remotely using highly-resolved spectral sensors and state-of-the-art algorithms to distinguish the emission from reflected and/or scattered ambient light. Because the red to far-red SIF emission is detectable non-invasively, it may be sampled repeatedly to acquire spatio-temporally explicit information about photosynthetic light responses and steady-state behaviour in vegetation. Progress in this field is accelerating with innovative sensor developments, retrieval methods, and modelling advances. This review distills the historical and current developments spanning the last several decades. It highlights SIF heritage and complementarity within the broader field of fluorescence science, the maturation of physiological and radiative transfer modelling, SIF signal retrieval strategies, techniques for field and airborne sensing, advances in satellite-based systems, and applications of these capabilities in evaluation of photosynthesis and stress effects. Progress, challenges, and future directions are considered for this unique avenue of remote sensing.
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Affiliation(s)
| | - Roberto Colombo
- Remote Sensing of Environmental Dynamics Lab., University of Milano - Bicocca, Milan, Italy
| | | | - Uwe Rascher
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Jülich, Germany
| | - Christiaan van der Tol
- University of Twente, Faculty of Geo-Information Science and Earth Observation, Enschede, The Netherlands
| | - Ladislav Nedbal
- Forschungszentrum Jülich, Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Jülich, Germany
| | - Yves Goulas
- CNRS, Laboratoire de Météorologie Dynamique (LMD), Ecole Polytechnique, Palaiseau, France
| | - Oscar Pérez-Priego
- Department of Biogeochemical Integration, Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Alexander Damm
- Department of Geography, University of Zurich, Zurich, Switzerland
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland
| | - Michele Meroni
- European Commission, Joint Research Centre (JRC), Ispra (VA), Italy
| | - Joanna Joiner
- NASA/Goddard Space Flight Center, Greenbelt, Maryland, United States
| | - Sergio Cogliati
- Remote Sensing of Environmental Dynamics Lab., University of Milano - Bicocca, Milan, Italy
| | - Wouter Verhoef
- University of Twente, Faculty of Geo-Information Science and Earth Observation, Enschede, The Netherlands
| | - Zbyněk Malenovský
- Department of Geography and Spatial Sciences, School of Technology, Environments and Design, College of Sciences and Engineering, University of Tasmania, Hobart, Australia
| | | | - John R. Miller
- Department of Earth and Space Science and Engineering, York University, Toronto, Canada
| | - Luis Guanter
- German Research Center for Geosciences (GFZ), Remote Sensing Section, Potsdam, Germany
| | - Jose Moreno
- Department of Earth Physics and Thermodynamics, University of Valencia, Valencia, Spain
| | - Ismael Moya
- CNRS, Laboratoire de Météorologie Dynamique (LMD), Ecole Polytechnique, Palaiseau, France
| | - Joseph A. Berry
- Department of Global Ecology, Carnegie Institution of Washington, Stanford, California, United States
| | - Christian Frankenberg
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States
| | - Pablo J. Zarco-Tejada
- European Commission, Joint Research Centre (JRC), Ispra (VA), Italy
- Instituto de Agriculture Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Córdoba, Spain
- Department of Infrastructure Engineering, Melbourne School of Engineering, University of Melbourne, Melbourne, Victoria, Australia
- School of Agriculture and Food, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, Victoria, Australia
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Pospíšil P, Prasad A, Rác M. Mechanism of the Formation of Electronically Excited Species by Oxidative Metabolic Processes: Role of Reactive Oxygen Species. Biomolecules 2019; 9:E258. [PMID: 31284470 PMCID: PMC6681336 DOI: 10.3390/biom9070258] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/28/2019] [Accepted: 06/30/2019] [Indexed: 01/07/2023] Open
Abstract
It is well known that biological systems, such as microorganisms, plants, and animals, including human beings, form spontaneous electronically excited species through oxidative metabolic processes. Though the mechanism responsible for the formation of electronically excited species is still not clearly understood, several lines of evidence suggest that reactive oxygen species (ROS) are involved in the formation of electronically excited species. This review attempts to describe the role of ROS in the formation of electronically excited species during oxidative metabolic processes. Briefly, the oxidation of biomolecules, such as lipids, proteins, and nucleic acids by ROS initiates a cascade of reactions that leads to the formation of triplet excited carbonyls formed by the decomposition of cyclic (1,2-dioxetane) and linear (tetroxide) high-energy intermediates. When chromophores are in proximity to triplet excited carbonyls, the triplet-singlet and triplet-triplet energy transfers from triplet excited carbonyls to chromophores result in the formation of singlet and triplet excited chromophores, respectively. Alternatively, when molecular oxygen is present, the triplet-singlet energy transfer from triplet excited carbonyls to molecular oxygen initiates the formation of singlet oxygen. Understanding the mechanism of the formation of electronically excited species allows us to use electronically excited species as a marker for oxidative metabolic processes in cells.
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Affiliation(s)
- Pavel Pospíšil
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
| | - Ankush Prasad
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Marek Rác
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
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Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study. Polar Biol 2019. [DOI: 10.1007/s00300-019-02464-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Govindjee. A sixty-year tryst with photosynthesis and related processes: an informal personal perspective. PHOTOSYNTHESIS RESEARCH 2019; 139:15-43. [PMID: 30343396 DOI: 10.1007/s11120-018-0590-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
After briefly describing my early collaborative work at the University of Allahabad, that had laid the foundation of my research life, I present here some of our research on photosynthesis at the University of Illinois at Urbana-Champaign, randomly selected from light absorption to NADP+ reduction in plants, algae, and cyanobacteria. These include the fact that (i) both the light reactions I and II are powered by light absorbed by chlorophyll (Chl) a of different spectral forms; (ii) light emission (fluorescence, delayed fluorescence, and thermoluminescence) by plants, algae, and cyanobacteria provides detailed information on these reactions and beyond; (iii) primary photochemistry in both the photosystems I (PS I) and II (PS II) occurs within a few picoseconds; and (iv) most importantly, bicarbonate plays a unique role on the electron acceptor side of PS II, specifically at the two-electron gate of PS II. Currently, the ongoing research around the world is, and should be, directed towards making photosynthesis better able to deal with the global issues (such as increasing population, dwindling resources, and rising temperature) particularly through genetic modification. However, basic research is necessary to continue to provide us with an understanding of the molecular mechanism of the process and to guide us in reaching our goals of increasing food production and other chemicals we need for our lives.
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Mishra KB, Mishra A, Kubásek J, Urban O, Heyer AG. Low temperature induced modulation of photosynthetic induction in non-acclimated and cold-acclimated Arabidopsis thaliana: chlorophyll a fluorescence and gas-exchange measurements. PHOTOSYNTHESIS RESEARCH 2019; 139:123-143. [PMID: 30306531 DOI: 10.1007/s11120-018-0588-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/24/2018] [Indexed: 05/23/2023]
Abstract
Cold acclimation modifies the photosynthetic machinery and enables plants to survive at sub-zero temperatures, whereas in warm habitats, many species suffer even at non-freezing temperatures. We have measured chlorophyll a fluorescence (ChlF) and CO2 assimilation to investigate the effects of cold acclimation, and of low temperatures, on a cold-sensitive Arabidopsis thaliana accession C24. Upon excitation with low intensity (40 µmol photons m- 2 s- 1) ~ 620 nm light, slow (minute range) ChlF transients, at ~ 22 °C, showed two waves in the SMT phase (S, semi steady-state; M, maximum; T, terminal steady-state), whereas CO2 assimilation showed a linear increase with time. Low-temperature treatment (down to - 1.5 °C) strongly modulated the SMT phase and stimulated a peak in the CO2 assimilation induction curve. We show that the SMT phase, at ~ 22 °C, was abolished when measured under high actinic irradiance, or when 3-(3, 4-dichlorophenyl)-1, 1- dimethylurea (DCMU, an inhibitor of electron flow) or methyl viologen (MV, a Photosystem I (PSI) electron acceptor) was added to the system. Our data suggest that stimulation of the SMT wave, at low temperatures, has multiple reasons, which may include changes in both photochemical and biochemical reactions leading to modulations in non-photochemical quenching (NPQ) of the excited state of Chl, "state transitions," as well as changes in the rate of cyclic electron flow through PSI. Further, we suggest that cold acclimation, in accession C24, promotes "state transition" and protects photosystems by preventing high excitation pressure during low-temperature exposure.
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Affiliation(s)
- Kumud B Mishra
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, 603 00, Brno, Czech Republic.
- Department of Experimental Biology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.
| | - Anamika Mishra
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - Jiří Kubásek
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - Otmar Urban
- Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, 603 00, Brno, Czech Republic
| | - Arnd G Heyer
- Department of Plant Biotechnology, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, Pfaffenwaldring 57, 70567, Stuttgart, Germany
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Khudyakova AY, Kreslavski VD, Shmarev AN, Lyubimov VY, Shirshikova GN, Pashkovskiy PP, Kuznetsov VV, Allakhverdiev SI. Impact of UV-B radiation on the photosystem II activity, pro-/antioxidant balance and expression of light-activated genes in Arabidopsis thaliana hy4 mutants grown under light of different spectral composition. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 194:14-20. [PMID: 30897399 DOI: 10.1016/j.jphotobiol.2019.02.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/08/2019] [Accepted: 02/11/2019] [Indexed: 11/27/2022]
Abstract
The effect of UV-B irradiation on the photosystem II (PSII) activity, the content of photosynthetic and UV-absorbing pigments (UAPs), activity of antioxidant enzymes such as catalase (CAT) and peroxidase (POD), as well as H2O2 content in 25-day-old wild type (WT) and the cryptochrome 1 (Cry1) mutant hy4 of Arabidopsis thaliana Col-0 plants was studied. In addition, expression of photoreceptor genes Cry1, Cry2 and UVR8, photomorphogenetic gene COP1 and transcription factors genes HY5, HYH, the gene of chlorophyll-binding protein of the PSII CAB1 as well as the flavonoid biosynthesis genes CHS, PAL and thylakoid ascorbate peroxidase gene tAPX was examined. It has been shown that UV-B leads to a decrease in the photochemical activity of PSII (FV/FM) and the PSII performance index (PIABS) of WT plants grown on white (WL) and red (RL) light and also hy4 mutants grown on WL, RL and blue light (BL). In plants grown on BL and WL, the decrease in the PSII photochemical activity was significantly greater in hy4 compared to WT. The PSII of WT plants grown in BL was resistant to UV-B. The UAPs content of hy4 grown on BL and WL was lower than that in WT. The POD and CAT activities of WT grown in BL were significantly higher than in the mutant. In WT and hy4 plants grown in RL, a noticeable difference in these enzymes activity was not found. In both types of plants grown in BL and RL, the expression of photomorphogenetic genes HYH, HY5 markedly increased after UV-B treatment but the expression of the UV-B photoreceptor gene UVR8 was reduced in hy4 grown in BL and RL. It is assumed that reduced resistance of PSII in hy4 plants grown in BL and WL can be associated with low UAPs content as well as lowered POD and CAT activities. In addition, we suggest the lowered expression of UVR8 and COP1 genes caused by Cry1 deficiency leads to a shift of balance of oxidants and antioxidants towards oxidants.
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Affiliation(s)
- Aleksandra Yu Khudyakova
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia
| | - Vladimir D Kreslavski
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia; Russian Academy of Sciences, Timiryazev Institute of Plant Physiology, Botanicheskaya Street 35, Moscow 127276, Russia.
| | - Aleksandr N Shmarev
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia
| | - Valery Yu Lyubimov
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia
| | - Galina N Shirshikova
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia
| | - Pavel P Pashkovskiy
- Russian Academy of Sciences, Timiryazev Institute of Plant Physiology, Botanicheskaya Street 35, Moscow 127276, Russia
| | - Vladimir V Kuznetsov
- Russian Academy of Sciences, Timiryazev Institute of Plant Physiology, Botanicheskaya Street 35, Moscow 127276, Russia
| | - Suleyman I Allakhverdiev
- Russian Academy of Sciences, Institute of Basic Biological Problems, Institutskaya Street 2, Pushchino, Moscow 142290, Russia; Russian Academy of Sciences, Timiryazev Institute of Plant Physiology, Botanicheskaya Street 35, Moscow 127276, Russia; Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119991, Russia; Department of Molecular and Cell Biology, Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow 141700, Russia; Bionanotechnology Laboratory, Azerbaijan National Academy of Sciences, Institute of Molecular Biology and Biotechnology, Matbuat Avenue 2a, Baku 1073, Azerbaijan.
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Romanowska-Duda Z, Grzesik M, Janas R. Maximal Efficiency of PSII as a Marker of Sorghum Development Fertilized With Waste From a Biomass Biodigestion to Methane. FRONTIERS IN PLANT SCIENCE 2019; 9:1920. [PMID: 30671072 PMCID: PMC6331529 DOI: 10.3389/fpls.2018.01920] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 12/11/2018] [Indexed: 05/22/2023]
Abstract
The aim of experiments was to investigate a maximal efficiency of PSII, as a marker indicating growth, vigor, energetic value and physiological activity of sorghum fertilized with wastes from a biomass biodigestion to methane in a distillery integrated with a biogas plant using corn grains as substrate. The sorghum plants grown outdoor in different climate and in pots and in field were fertilized with different doses of the waste or Apol-humus - a soil improver and Stymjod - a nano-organic-mineral fertilizer. The maximal efficiency of PSII, in comparison with plant growth and health, chlorophyll content, gas exchange, activity of selected enzymes, element content in leaves and energetic value were studied. The wastes applied to soil resulted in increased maximal efficiency of PSII and the doses of 30 m3 ha-1 and 40-50 m3 ha-1 of the non-centrifuged and centrifuged ones, respectively, were most efficient. This enhancement was associated with the increased kinetics of plant growth, their health, fresh and dry biomass and physiological activity of plants as evidenced by activity of acid and alkaline phosphatase, RNase and dehydrogenase, as well as by gas exchange: net photosynthesis, transpiration, stomatal conductance, intercellular CO2 concentration and index of chlorophyll content in leaves. The fertilization with Apol-humus and Stymjod additionally increased maximal photochemical efficiency of PSII and plant development, biomass yield and physiological activity. The results indicate that waste from a biomass biodigestion to methane can be used as a natural fertilizer in sorghum crops and this ensures their recycling and environmental protection. The measurement values of maximal efficiency of PSII were proportionally to the vigor, growth and physiological activity of the plants. The obtained results indicate that the maximal efficiency of PSII in sorghum plants is a non-destructive method for defining the degree of growth and may be used as a marker of plant vigor and health, development and physiological activity expressed by gas exchange and activity of selected enzymes.
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Affiliation(s)
| | - Mieczysław Grzesik
- Department of Nursery and Seed Research, Research Institute of Horticulture, Skierniewice, Poland
| | - Regina Janas
- Department of Nursery and Seed Research, Research Institute of Horticulture, Skierniewice, Poland
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Szopiński M, Sitko K, Gieroń Ż, Rusinowski S, Corso M, Hermans C, Verbruggen N, Małkowski E. Toxic Effects of Cd and Zn on the Photosynthetic Apparatus of the Arabidopsis halleri and Arabidopsis arenosa Pseudo-Metallophytes. FRONTIERS IN PLANT SCIENCE 2019; 10:748. [PMID: 31244873 PMCID: PMC6563759 DOI: 10.3389/fpls.2019.00748] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 05/21/2019] [Indexed: 05/03/2023]
Abstract
Hyperaccumulation and hypertolerance of Trace Metal Elements (TME) like Cd and Zn are highly variable in pseudo-metallophytes species. In this study we compared the impact of high Cd or Zn concentration on the photosynthetic apparatus of the Arabidopsis arenosa and Arabidopsis halleri pseudo-metallophytes growing on the same contaminated site in Piekary Slaskie in southern Poland. Plants were grown in hydroponic culture for 6 weeks, and then treated with 1.0 mM Cd or 5.0 mM Zn for 5 days. Chlorophyll a fluorescence and pigment content were measured after 0, 1, 2, 3, 4, and 5 days in plants grown in control and exposed to Cd or Zn treatments. Moreover, the effect of TME excess on the level of oxidative stress and gas-exchange parameters were investigated. In both plant species, exposure to high Cd or Zn induced a decrease in chlorophyll and an increase in anthocyanin contents in leaves compared to the control condition. After 5 days Cd treatment, energy absorbance, trapped energy flux and the percentage of active reaction centers decreased in both species. However, the dissipated energy flux in the leaves of A. arenosa was smaller than in A. halleri. Zn treatment had more toxic effect than Cd on electron transport in A. halleri compared with A. arenosa. A. arenosa plants treated with Zn excess did not react as strongly as in the Cd treatment and a decrease only in electron transport flux and percentage of active reaction centers compared with control was observed. The two species showed contrasting Cd and Zn accumulation. Cd concentration was almost 3-fold higher in A. arenosa leaves than in A. halleri. On the opposite, A. halleri leaves contained 3-fold higher Zn concentration than A. arenosa. In short, our results showed that the two Arabidopsis metallicolous populations are resistant to high Cd or Zn concentration, however, the photosynthetic apparatus responded differently to the toxic effects.
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Affiliation(s)
- Michał Szopiński
- Department of Plant Physiology, University of Silesia in Katowice, Katowice, Poland
- *Correspondence: Michał Szopiński
| | - Krzysztof Sitko
- Department of Plant Physiology, University of Silesia in Katowice, Katowice, Poland
| | - Żaneta Gieroń
- Department of Plant Physiology, University of Silesia in Katowice, Katowice, Poland
| | | | - Massimiliano Corso
- Laboratoire de Physiologie et de Génétique Moléculaire des Plantes, Université Libre de Bruxelles, Brussels, Belgium
| | - Christian Hermans
- Laboratoire de Physiologie et de Génétique Moléculaire des Plantes, Université Libre de Bruxelles, Brussels, Belgium
| | - Nathalie Verbruggen
- Laboratoire de Physiologie et de Génétique Moléculaire des Plantes, Université Libre de Bruxelles, Brussels, Belgium
| | - Eugeniusz Małkowski
- Department of Plant Physiology, University of Silesia in Katowice, Katowice, Poland
- Eugeniusz Małkowski
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Kalaji HM, Bąba W, Gediga K, Goltsev V, Samborska IA, Cetner MD, Dimitrova S, Piszcz U, Bielecki K, Karmowska K, Dankov K, Kompała-Bąba A. Chlorophyll fluorescence as a tool for nutrient status identification in rapeseed plants. PHOTOSYNTHESIS RESEARCH 2018; 136:329-343. [PMID: 29185137 PMCID: PMC5937862 DOI: 10.1007/s11120-017-0467-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 11/23/2017] [Indexed: 05/20/2023]
Abstract
In natural conditions, plants growth and development depends on environmental conditions, including the availability of micro- and macroelements in the soil. Nutrient status should thus be examined not by establishing the effects of single nutrient deficiencies on the physiological state of the plant but by combinations of them. Differences in the nutrient content significantly affect the photochemical process of photosynthesis therefore playing a crucial role in plants growth and development. In this work, an attempt was made to find a connection between element content in (i) different soils, (ii) plant leaves, grown on these soils and (iii) changes in selected chlorophyll a fluorescence parameters, in order to find a method for early detection of plant stress resulting from the combination of nutrient status in natural conditions. To achieve this goal, a mathematical procedure was used which combines principal component analysis (a tool for the reduction of data complexity), hierarchical k-means (a classification method) and a machine-learning method-super-organising maps. Differences in the mineral content of soil and plant leaves resulted in functional changes in the photosynthetic machinery that can be measured by chlorophyll a fluorescent signals. Five groups of patterns in the chlorophyll fluorescent parameters were established: the 'no deficiency', Fe-specific deficiency, slight, moderate and strong deficiency. Unfavourable development in groups with nutrient deficiency of any kind was reflected by a strong increase in F o and ΔV/Δt 0 and decline in φ Po, φ Eo δ Ro and φ Ro. The strong deficiency group showed the suboptimal development of the photosynthetic machinery, which affects both PSII and PSI. The nutrient-deficient groups also differed in antenna complex organisation. Thus, our work suggests that the chlorophyll fluorescent method combined with machine-learning methods can be highly informative and in some cases, it can replace much more expensive and time-consuming procedures such as chemometric analyses.
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Affiliation(s)
- Hazem M Kalaji
- Institute of Technology and Life Sciences (ITP), Falenty, Al. Hrabska 3, 05-090, Raszyn, Poland
- White Hill Company, Żurawia 71/3, 15-540 Białystok, Poland
| | - Wojciech Bąba
- Department of Plant Ecology, Institute of Botany, Jagiellonian University, Lubicz 46, 31-512, Kraków, Poland.
| | - Krzysztof Gediga
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland
| | - Vasilij Goltsev
- Department of Biophysics and Radiobiology, Faculty of Biology, St. Kliment Ohridski University of Sofia, 8 Dr Tzankov Blvd., 1164, Sofia, Bulgaria
| | - Izabela A Samborska
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776, Warszawa, Poland
| | - Magdalena D Cetner
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776, Warszawa, Poland
| | - Stella Dimitrova
- Department of Biophysics and Radiobiology, Faculty of Biology, St. Kliment Ohridski University of Sofia, 8 Dr Tzankov Blvd., 1164, Sofia, Bulgaria
| | - Urszula Piszcz
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland
| | - Krzysztof Bielecki
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland
| | - Kamila Karmowska
- Department of Plant Nutrition, Wrocław University of Environmental and Life Sciences, Grunwaldzka 53, 50-357, Wrocław, Poland
| | - Kolyo Dankov
- Department of Biophysics and Radiobiology, Faculty of Biology, St. Kliment Ohridski University of Sofia, 8 Dr Tzankov Blvd., 1164, Sofia, Bulgaria
| | - Agnieszka Kompała-Bąba
- Department of Botany and Nature Protection, University of Silesia, Jagiellońska 28, 40-032, Katowice, Poland
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Yan K, Zhao S, Cui M, Han G, Wen P. Vulnerability of photosynthesis and photosystem I in Jerusalem artichoke (Helianthus tuberosus L.) exposed to waterlogging. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 125:239-246. [PMID: 29477087 DOI: 10.1016/j.plaphy.2018.02.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 02/13/2018] [Accepted: 02/13/2018] [Indexed: 05/25/2023]
Abstract
Jerusalem artichoke (Helianthus tuberosus L.) is an important energy crop for utilizing coastal marginal land. This study was to investigate waterlogging tolerance of Jerusalem artichoke through photosynthetic diagnose with emphasis on photosystem II (PSII) and photosystem I (PSI) performance. Potted plants were subjected to severe (liquid level 5 cm above vermiculite surface) and moderate (liquid level 5 cm below vermiculite surface) waterlogging for 9 days. Large decreased photosynthetic rate suggested photosynthesis vulnerability upon waterlogging. After 7 days of severe waterlogging, PSII and PSI photoinhibition arose, indicated by significant decrease in the maximal photochemical efficiency of PSII (Fv/Fm) and PSI (△MR/MR0), and PSI seemed more vulnerable because of greater decrease in △MR/MR0 than Fv/Fm. In line with decreased △MR/MR0 and unchanged Fv/Fm after 9 days of moderate waterlogging, the amount of PSI reaction center protein rather than PSII reaction center protein was lowered, confirming greater PSI vulnerability. According to positive correlation between △MR/MR0 and efficiency that an electron moves beyond primary quinone and negative correlation between △MR/MR0 and PSII excitation pressure, PSI inactivation elevated PSII excitation pressure by depressing electron transport at PSII acceptor side. Thus, PSI vulnerability induced PSII photoinhibition and endangered the stability of whole photosynthetic apparatus under waterlogging. In agreement with photosystems photoinhibition, elevated H2O2 concentration and lipid peroxidation in the leaves corroborated waterlogging-induced oxidative stress. In conclusion, Jerusalem artichoke is a waterlogging sensitive species in terms of photosynthesis and PSI vulnerability. Consistently, tuber yield was tremendously reduced by waterlogging, confirming waterlogging sensitivity of Jerusalem artichoke.
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Affiliation(s)
- Kun Yan
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Shijie Zhao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Mingxing Cui
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
| | - Guangxuan Han
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Pei Wen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
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38
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Wang H, Qian X, Zhang L, Xu S, Li H, Xia X, Dai L, Xu L, Yu J, Liu X. A Method of High Throughput Monitoring Crop Physiology Using Chlorophyll Fluorescence and Multispectral Imaging. FRONTIERS IN PLANT SCIENCE 2018; 9:407. [PMID: 29643864 PMCID: PMC5883069 DOI: 10.3389/fpls.2018.00407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 03/14/2018] [Indexed: 05/20/2023]
Abstract
We present a high throughput crop physiology condition monitoring system and corresponding monitoring method. The monitoring system can perform large-area chlorophyll fluorescence imaging and multispectral imaging. The monitoring method can determine the crop current condition continuously and non-destructively. We choose chlorophyll fluorescence parameters and relative reflectance of multispectral as the indicators of crop physiological status. Using tomato as experiment subject, the typical crop physiological stress, such as drought, nutrition deficiency and plant disease can be distinguished by the monitoring method. Furthermore, we have studied the correlation between the physiological indicators and the degree of stress. Besides realizing the continuous monitoring of crop physiology, the monitoring system and method provide the possibility of machine automatic diagnosis of the plant physiology. Highlights: A newly designed high throughput crop physiology monitoring system and the corresponding monitoring method are described in this study. Different types of stress can induce distinct fluorescence and spectral characteristics, which can be used to evaluate the physiological status of plants.
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Affiliation(s)
- Heng Wang
- State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China
| | - Xiangjie Qian
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Lan Zhang
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Sailong Xu
- College of Control Science and Engineering, Zhejiang University, Hangzhou, China
| | - Haifeng Li
- State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China
| | - Xiaojian Xia
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Liankui Dai
- College of Control Science and Engineering, Zhejiang University, Hangzhou, China
| | - Liang Xu
- State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China
| | - Jingquan Yu
- Department of Horticulture, Zhejiang University, Hangzhou, China
| | - Xu Liu
- State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China
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Ospina Calvo B, Parapugna TL, Lagorio MG. Variability in chlorophyll fluorescence spectra of eggplant fruit grown under different light environments: a case study. Photochem Photobiol Sci 2018; 16:711-720. [PMID: 28287658 DOI: 10.1039/c6pp00475j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The main goal of the present work was to clarify physiological strategies in plants whose chloroplasts were developed under different light environments. The specific objective was to elucidate the influence of the spectral distribution of light on the chlorophyll fluorescence ratio and on photosynthetic parameters. To achieve this purpose, three species of eggplant fruit (black, purple and white striped and white) were used as a case study and their chlorophyll fluorescence was analyzed in detail. Spectra of the non-variable fluorescence in each part of the fruit were corrected for distortions by light reabsorption processes using a physical model. The main conclusion of this work was that the corrected fluorescence ratio was dependent on the contribution of each photosystem to the fluorescence and consequently on the environmental lighting conditions, becoming higher when illumination was rich in long wavelengths. Variable chlorophyll fluorescence, similar to that observed from plant leaves, was detected for the pulp of the black eggplant, for the pulp of the purple and white striped eggplant and for the intact fruit of the black eggplant. The maximum quantum efficiency of photosystem II in the light-adapted state (F'v/F'm), the quantum efficiency of photosystem II (ΦPSII), and the photochemical and non-photochemical quenching coefficients (qP and qNP/NPQ respectively) were determined in each case. The results could be explained very interestingly, in relation with the proportion of exciting light reaching each photosystem (I and II). The photochemical parameters obtained from variable chlorophyll fluorescence, allowed us to monitor non-destructively the physiological state of the black fruit during storage under both chilled or room-temperature conditions.
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Affiliation(s)
- Brian Ospina Calvo
- INQUIMAE, Universidad de Buenos Aires, CONICET, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
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40
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Yan K, Han G, Ren C, Zhao S, Wu X, Bian T. Fusarium solani Infection Depressed Photosystem Performance by Inducing Foliage Wilting in Apple Seedlings. FRONTIERS IN PLANT SCIENCE 2018; 9:479. [PMID: 29868040 PMCID: PMC5949536 DOI: 10.3389/fpls.2018.00479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 03/28/2018] [Indexed: 05/18/2023]
Abstract
Fusarium fungi are soil-borne pathogens, and the pathological effects on plant photosystems remain unclear. This study aimed to deeply reveal pathological characterization in apple seedlings infected with Fusarium solani by investigating photosystems performance and interaction. Roots were immersed in conidial suspension for inoculation. Thereafter, prompt and delayed chlorophyll a fluorescence and modulated 820 nm reflection were simultaneously detected. After 30 days of infection, leaf relative water content and dry weight were remarkably decreased by 55.7 and 47.1%, suggesting that the infected seedlings were subjected to Fusarium-induced water deficit stress. PSI reaction center was more susceptible than PSII reaction center in infected seedlings due to greater decrease in the maximal photochemical efficiency of PSI than that of PSII, but PSI reaction center injury was aggravated slowly, as PSII injury could partly protect PSI by restricting electron donation. PSII donor and acceptor sides were also damaged after 20 days of infection, and the restricted electron donation induced PSII and PSI disconnection by blocking PSI re-reduction. In accordance with greater damage of PSI reaction center, PSI oxidation was also suppressed. Notably, significantly increased efficiency of electron transport from plastoquinone (PQ) to PSI acceptors (REo/ETo) after 20 days of infection suggested greater inhibition on PQ reduction than re-oxidation, and the protection for PSI acceptors might alleviate the reduction of electron transport efficiency beyond PQ upon damaged PSI reaction center. Lowered delayed fluorescence in microsecond domain verified PSII damage in infected seedlings, and elevated delayed fluorescence in sub-millisecond domain during PQ reduction process conformed to increased REo/ETo. In conclusion, F. solani infection depressed PSII and PSI performance and destroyed their coordination by inducing pathological wilting in apple seedlings. It may be a pathogenic mechanism of Fusarium to induce plant photosystems damage.
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Affiliation(s)
- Kun Yan
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- *Correspondence: Kun Yan, Shijie Zhao,
| | - Guangxuan Han
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Chenggang Ren
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Shijie Zhao
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai’an, China
- *Correspondence: Kun Yan, Shijie Zhao,
| | - Xiaoqing Wu
- Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute, Shandong Academy of Sciences, Jinan, China
| | - Tiantian Bian
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- School of Life Sciences, Ludong University, Yantai, China
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41
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Wang H, Qian X, Zhang L, Xu S, Li H, Xia X, Dai L, Xu L, Yu J, Liu X. Detecting crop population growth using chlorophyll fluorescence imaging. APPLIED OPTICS 2017; 56:9762-9769. [PMID: 29240123 DOI: 10.1364/ao.56.009762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/08/2017] [Indexed: 05/26/2023]
Abstract
For both field and greenhouse crops, it is challenging to evaluate their growth information on a large area over a long time. In this work, we developed a chlorophyll fluorescence imaging-based system for crop population growth information detection. Modular design was used to make the system provide high-intensity uniform illumination. This system can perform modulated chlorophyll fluorescence induction kinetics measurement and chlorophyll fluorescence parameter imaging over a large area of up to 45 cm×34 cm. The system can provide different lighting intensity by modulating the duty cycle of its control signal. Results of continuous monitoring of cucumbers in nitrogen deficiency show the system can reduce the judge error of crop physiological status and improve monitoring efficiency. Meanwhile, the system is promising in high throughput application scenarios.
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42
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Sukhov V, Gaspirovich V, Mysyagin S, Vodeneev V. High-Temperature Tolerance of Photosynthesis Can Be Linked to Local Electrical Responses in Leaves of Pea. Front Physiol 2017; 8:763. [PMID: 29033854 PMCID: PMC5627542 DOI: 10.3389/fphys.2017.00763] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/19/2017] [Indexed: 11/16/2022] Open
Abstract
It is known that numerous stimuli induce electrical signals which can increase a plant's tolerance to stressors, including high temperature. However, the physiological role of local electrical responses (LERs), i.e., responses in the zone of stimulus action, in the plant's tolerance has not been sufficiently investigated. The aim of a current work is to analyze the connection between parameters of LERs with the thermal tolerance of photosynthetic processes in pea. Electrical activity and photosynthetic parameters in pea leaves were registered during transitions of air temperature in a measurement head (from 23 to 30°C, from 30 to 40°C, from 40 to 45°C, and from 45 to 23°C). This stepped heating decreased a photosynthetic assimilation of CO2 and induced generation of LERs in the heated leaf. Amplitudes of LERs, quantity of responses during the heating and the number of temperature transition, which induced the first generation of LERs, varied among different pea plants. Parameters of LERs were weakly connected with the photosynthetic assimilation of CO2 during the heating; however, a residual photosynthetic activity after a treatment by high temperatures increased with the growth of amplitudes and quantity of LERs and with lowering of the number of the heating transition, inducing the first electrical response. The effect was not connected with a photosynthetic activity before heating; similar dependences were also observed for effective and maximal quantum yields of photosystem II after heating. We believe that the observed effect can reflect a positive influence of LERs on the thermal tolerance of photosynthesis. It is possible that the process can participate in a plant's adaptation to stressors.
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Affiliation(s)
- Vladimir Sukhov
- Department of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
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43
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Recchia I, Sparla F, Pupillo P. Photosynthetic properties of spring geophytes assessed by chlorophyll fluorescence analysis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 118:510-518. [PMID: 28759847 DOI: 10.1016/j.plaphy.2017.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 06/23/2017] [Accepted: 07/23/2017] [Indexed: 06/07/2023]
Abstract
Since spring ephemerals are credited to be all "sun" species with unusually elevate photosynthesis, in contrast to shade-tolerant trees and understory geophytes with a long aboveground cycle, we examined the photosynthetic efficiency of 6 woody species, 9 long-cycle geophytes, and 8 spring ephemeral geophytes using blue flashes of increasing energy with the Imaging PAM fluorometer. Several parameters were obtained: quantum yield of electron transport (ΦETR) or of PSII (ΦPSII), maximum measured photosynthesis rate (ETRhv), maximum extrapolated rate of photosynthesis (ETRem), half-saturating photon flux density (KPAR), and in some cases photochemical (qP) and non-photochemical quenching (NPQ). Results confirm the ecological consistency of the three plant groups, with internal differences. Woody species have low ETRem and KPAR values with good ΦETR; long-cycle herbs have low ETRem and ΦETR and moderate KPAR values; spring ephemerals have elevate ΦETR, ETRem and KPAR values. The mean ETRem of ephemerals of 91 μmol m-2 s-1 exceeds that of long-cycle herbs 2.9-fold and woody species 4.8-fold, and corresponds to 19 μmol CO2 m-2 s-1 by assuming an ETR/ΦCO2 ratio of 4.7. Highest photosynthesis rates and KPAR were exhibited by five ephemerals (Eranthis, Erythronium, Narcissus, Scilla, Tulipa) with peak ETRem values equivalent to ∼40 μmol CO2 m-2 s-1 or ∼60 μmol CO2 (g Chl)-1 s-1 ("sun" species). According to a new, fluorescence based heliophily index, all trees and five long-cycle herbs were definitely "shade" species, while four long-cycle herbs and three ephemerals were intermediate shade-tolerant.
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Affiliation(s)
- Irene Recchia
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.
| | - Francesca Sparla
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.
| | - Paolo Pupillo
- Department of Pharmacy and Biotechnology FaBiT, University of Bologna, Via Irnerio 42, 40126 Bologna, Italy.
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Kreslavski VD, Brestic M, Zharmukhamedov SK, Lyubimov VY, Lankin AV, Jajoo A, Allakhverdiev SI. Mechanisms of inhibitory effects of polycyclic aromatic hydrocarbons in photosynthetic primary processes in pea leaves and thylakoid preparations. PLANT BIOLOGY (STUTTGART, GERMANY) 2017; 19:683-688. [PMID: 28646629 DOI: 10.1111/plb.12598] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 06/19/2017] [Indexed: 05/25/2023]
Abstract
Inhibitory effects of polycyclic aromatic hydrocarbons (PAHs) on plants were studied in pea leaves in order to elucidate the mechanisms of action of PAHs such as naphthalene (Naph) and phenanthrene (Phen) on activity of photosystem II (PSII). The changes in different Chl fluorescence parameters were calculated on the basis of Chl fluorescence induction curves. H2 O2 content was measured in leaf homogenates with the luminol-dependent chemiluminescence method. We demonstrated that following PAH treatment, total energy dissipation (DI0 /ABS) and amount of QB -non-reducing complexes of PSII significantly increased. Non-photochemical quenching (NPQ) also increased, when weak oxidative stress after PAH application developed. In leaves, a two-step increase in H2 O2 was found with time of incubation in the presence of PAHs, which may be associated with damage to the lipid bilayer of the plasma membrane and then violation of lipid bilayer membranes of cell organelles. A hypothesis for the mode of action of PAHs is provided that involves the role of ROS, membrane permeability and associated functional changes in PSII.
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Affiliation(s)
- V D Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, Russia
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - M Brestic
- Department of Plant Physiology, Slovak Agricultural University, Nitra, Slovak Republic
| | - S K Zharmukhamedov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, Russia
| | - V Yu Lyubimov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, Russia
| | - A V Lankin
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, Russia
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - A Jajoo
- School of Life science, Devi Ahilya University, Indore, India
| | - S I Allakhverdiev
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow, Russia
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
- Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
- Bionanotechnology Laboratory, Institute of Molecular Biology and Biotechnology, Azerbaijan National Academy of Sciences, Baku, Azerbaijan
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de Sousa CAF, de Paiva DS, Casari RADCN, de Oliveira NG, Molinari HBC, Kobayashi AK, Magalhães PC, Gomide RL, Souza MT. A procedure for maize genotypes discrimination to drought by chlorophyll fluorescence imaging rapid light curves. PLANT METHODS 2017; 13:61. [PMID: 28769996 PMCID: PMC5530575 DOI: 10.1186/s13007-017-0209-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 07/17/2017] [Indexed: 05/30/2023]
Abstract
BACKGROUND Photosynthesis can be roughly separated into biochemical and photochemical processes. Both are affected by drought and can be assessed by non-invasive standard methods. Gas exchange, which mainly assesses the first process, has well-defined protocols. It is considered a standard method for evaluation of plant responses to drought. Under such stress, assessment of photochemical apparatus by chlorophyll fluorescence needs improvement to become faster and reproducible, especially in growing plants under field conditions. For this, we developed a protocol based on chlorophyll fluorescence imaging, using a rapid light curve approach. RESULTS Almost all parameters obtained by rapid light curves have shown statistical differences between control and drought stressed maize plants. However, most of them were affected by induction processes, relaxation rate, and/or differences in chlorophyll content; while they all were influenced by actinic light intensity on each light step of light curve. Only the normalized parameters related to photochemical and non-photochemical quenching were strongly correlated with data obtained by gas exchange, but only from the light step in which the linear electron flow reached saturation. CONCLUSIONS The procedure developed in this study for discrimination of plant responses to water deficit stress proved to be as fast, efficient and reliable as the standard technique of gas exchange in order to discriminate the responses of maize genotypes to drought. However, unlike that, there is no need to perform daily and time consuming calibration routines. Moreover, plant acclimation to the dark is not required. The protocol can be applied to plants growing in both controlled conditions and full sunlight in the field. In addition, it generates parameters in a fast and accurate measurement process, which enables evaluating several plants in a short period of time.
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Affiliation(s)
| | - Dayane Silva de Paiva
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), Avenida W3 Norte (Final), Brasília, DF 70770-901 Brazil
| | | | - Nelson Geraldo de Oliveira
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), Avenida W3 Norte (Final), Brasília, DF 70770-901 Brazil
| | - Hugo Bruno Correa Molinari
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), Avenida W3 Norte (Final), Brasília, DF 70770-901 Brazil
| | - Adilson Kenji Kobayashi
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), Avenida W3 Norte (Final), Brasília, DF 70770-901 Brazil
| | - Paulo Cesar Magalhães
- Embrapa Milho e Sorgo, Rod. MG 424 km 45, Zona Rural, Sete Lagoas, MG 35701-970 Brazil
| | - Reinaldo Lúcio Gomide
- Embrapa Milho e Sorgo, Rod. MG 424 km 45, Zona Rural, Sete Lagoas, MG 35701-970 Brazil
| | - Manoel Teixeira Souza
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), Avenida W3 Norte (Final), Brasília, DF 70770-901 Brazil
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46
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Kreslavski VD, Kosobryukhov AA, Schmitt FJ, Semenova GA, Shirshikova GN, Khudyakova AY, Allakhverdiev SI. Photochemical activity and the structure of chloroplasts in Arabidopsis thaliana L. mutants deficient in phytochrome A and B. PROTOPLASMA 2017; 254:1283-1293. [PMID: 27586644 DOI: 10.1007/s00709-016-1020-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/19/2016] [Indexed: 06/06/2023]
Abstract
The reduced content of photoreceptors, such as phytochromes, can decrease the efficiency of photosynthesis and activity of the photosystem II (PSII). For the confirmation of this hypothesis, the effect of deficiency in both phytochromes (Phy) A and B (double mutant, DM) in 7-27-day-old Arabidopsis thaliana plants on the photosynthetic activity was studied in absence and presence of UV-A radiation as a stress factor. The DM with reduced content of apoproteins of PhyA and PhyB and wild type (WT) plants with were grown in white and red light (WL and RL, respectively) of high (130 μmol quanta m-2 s-1) and low (40 μmol quanta m-2 s-1) intensity. For DM and WT grown in WL, no notable difference in the photochemical activity of PSII was observed. However, the resistance of the photosynthetic apparatus (PA) to UV-A and the rate of photosynthesis under light saturation were lower in the DM compared to those in the WT. Growth in RL, when the photoreceptors of blue light-cryptochromes-are inactive, resulted in the significant decrease of the photochemical activity of PSII in DM compared to that in WT including amounts of QB-non-reducing complexes of PSII and noticeable enhancement of thermal dissipation of absorbed light energy. In addition, marked distortion of the thylakoid membrane structure was observed for DM grown in RL. It is suggested that not only PhyA and PhyB but also cryptochromes are necessary for normal functioning of the PA and formation of the mechanisms of its resistance to UV-radiation.
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Affiliation(s)
- Vladimir D Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, Moscow Region, 142290, Russia.
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia.
| | - Anatoly A Kosobryukhov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, Moscow Region, 142290, Russia
| | - Franz-Josef Schmitt
- Technical University of Berlin, Institute of Chemistry, Max-Volmer-Laboratory of Biophysical Chemistry, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Galina A Semenova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya Street 3, Pushchino, Moscow Region, 142290, Russia
| | - Galina N Shirshikova
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, Moscow Region, 142290, Russia
| | - Aleksandra Yu Khudyakova
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, Moscow Region, 142290, Russia
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia
| | - Suleyman I Allakhverdiev
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino, Moscow Region, 142290, Russia.
- Controlled Photobiosynthesis Laboratory, Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia.
- Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow, 119991, Russia.
- Bionanotechnology Laboratory, Institute of Molecular Biology and Biotechnology, Azerbaijan National Academy of Sciences, Matbuat Avenue 2a, Baku, 1073, Azerbaijan.
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47
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Kalaji HM, Schansker G, Brestic M, Bussotti F, Calatayud A, Ferroni L, Goltsev V, Guidi L, Jajoo A, Li P, Losciale P, Mishra VK, Misra AN, Nebauer SG, Pancaldi S, Penella C, Pollastrini M, Suresh K, Tambussi E, Yanniccari M, Zivcak M, Cetner MD, Samborska IA, Stirbet A, Olsovska K, Kunderlikova K, Shelonzek H, Rusinowski S, Bąba W. Frequently asked questions about chlorophyll fluorescence, the sequel. PHOTOSYNTHESIS RESEARCH 2017; 132:13-66. [PMID: 27815801 PMCID: PMC5357263 DOI: 10.1007/s11120-016-0318-y] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 10/17/2016] [Indexed: 05/20/2023]
Abstract
Using chlorophyll (Chl) a fluorescence many aspects of the photosynthetic apparatus can be studied, both in vitro and, noninvasively, in vivo. Complementary techniques can help to interpret changes in the Chl a fluorescence kinetics. Kalaji et al. (Photosynth Res 122:121-158, 2014a) addressed several questions about instruments, methods and applications based on Chl a fluorescence. Here, additional Chl a fluorescence-related topics are discussed again in a question and answer format. Examples are the effect of connectivity on photochemical quenching, the correction of F V /F M values for PSI fluorescence, the energy partitioning concept, the interpretation of the complementary area, probing the donor side of PSII, the assignment of bands of 77 K fluorescence emission spectra to fluorescence emitters, the relationship between prompt and delayed fluorescence, potential problems when sampling tree canopies, the use of fluorescence parameters in QTL studies, the use of Chl a fluorescence in biosensor applications and the application of neural network approaches for the analysis of fluorescence measurements. The answers draw on knowledge from different Chl a fluorescence analysis domains, yielding in several cases new insights.
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Affiliation(s)
- Hazem M. Kalaji
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences – SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | | | - Marian Brestic
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
| | - Filippo Bussotti
- Department of Agricultural, Food and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144 Florence, Italy
| | - Angeles Calatayud
- Departamento de Horticultura, Instituto Valenciano de Investigaciones Agrarias, Ctra. Moncada-Náquera Km 4.5., 46113 Moncada, Valencia Spain
| | - Lorenzo Ferroni
- Department of Life Sciences and Biotechnology, University of Ferrara, Corso Ercole I d’Este, 32, 44121 Ferrara, Italy
| | - Vasilij Goltsev
- Department of Biophysics and Radiobiology, Faculty of Biology, St. Kliment Ohridski University of Sofia, 8 Dr.Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Lucia Guidi
- Department of Agriculture, Food and Environment, Via del Borghetto, 80, 56124 Pisa, Italy
| | - Anjana Jajoo
- School of Life Sciences, Devi Ahilya University, Indore, M.P. 452 001 India
| | - Pengmin Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling, 712100 Shaanxi China
| | - Pasquale Losciale
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria [Research Unit for Agriculture in Dry Environments], 70125 Bari, Italy
| | - Vinod K. Mishra
- Department of Biotechnology, Doon (P.G.) College of Agriculture Science, Dehradun, Uttarakhand 248001 India
| | - Amarendra N. Misra
- Centre for Life Sciences, Central University of Jharkhand, Ratu-Lohardaga Road, Ranchi, 835205 India
| | - Sergio G. Nebauer
- Departamento de Producción vegetal, Universitat Politècnica de València, Camino de Vera sn., 46022 Valencia, Spain
| | - Simonetta Pancaldi
- Department of Life Sciences and Biotechnology, University of Ferrara, Corso Ercole I d’Este, 32, 44121 Ferrara, Italy
| | - Consuelo Penella
- Departamento de Horticultura, Instituto Valenciano de Investigaciones Agrarias, Ctra. Moncada-Náquera Km 4.5., 46113 Moncada, Valencia Spain
| | - Martina Pollastrini
- Department of Agricultural, Food and Environmental Sciences, University of Florence, Piazzale delle Cascine 28, 50144 Florence, Italy
| | - Kancherla Suresh
- ICAR – Indian Institute of Oil Palm Research, Pedavegi, West Godavari Dt., Andhra Pradesh 534 450 India
| | - Eduardo Tambussi
- Institute of Plant Physiology, INFIVE (Universidad Nacional de La Plata — Consejo Nacional de Investigaciones Científicas y Técnicas), Diagonal 113 N°495, CC 327, La Plata, Argentina
| | - Marcos Yanniccari
- Institute of Plant Physiology, INFIVE (Universidad Nacional de La Plata — Consejo Nacional de Investigaciones Científicas y Técnicas), Diagonal 113 N°495, CC 327, La Plata, Argentina
| | - Marek Zivcak
- Department of Plant Physiology, Slovak Agricultural University, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
| | - Magdalena D. Cetner
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences – SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Izabela A. Samborska
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences – SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | | | - Katarina Olsovska
- Department of Plant Physiology, Slovak University of Agriculture, A. Hlinku 2, 94976 Nitra, Slovak Republic
| | - Kristyna Kunderlikova
- Department of Plant Physiology, Slovak University of Agriculture, A. Hlinku 2, 94976 Nitra, Slovak Republic
| | - Henry Shelonzek
- Department of Plant Anatomy and Cytology, Faculty of Biology and Environmental Protection, University of Silesia, ul. Jagiellońska 28, 40-032 Katowice, Poland
| | - Szymon Rusinowski
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland
| | - Wojciech Bąba
- Department of Plant Ecology, Institute of Botany, Jagiellonian University, Lubicz 46, 31-512 Kraków, Poland
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48
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Sukhov V, Surova L, Morozova E, Sherstneva O, Vodeneev V. Changes in H(+)-ATP Synthase Activity, Proton Electrochemical Gradient, and pH in Pea Chloroplast Can Be Connected with Variation Potential. FRONTIERS IN PLANT SCIENCE 2016; 7:1092. [PMID: 27499760 PMCID: PMC4956672 DOI: 10.3389/fpls.2016.01092] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/11/2016] [Indexed: 05/22/2023]
Abstract
Local stimulation induces generation and propagation of electrical signals, including the variation potential (VP) and action potential, in plants. Burning-induced VP changes the physiological state of plants; specifically, it inactivates photosynthesis. However, the mechanisms that decrease photosynthesis are poorly understood. We investigated these mechanisms by measuring VP-connected systemic changes in CO2 assimilation, parameters of light reactions of photosynthesis, electrochromic pigment absorbance shifts, and light scattering. We reveal that inactivation of photosynthesis in the pea, including inactivation of dark and light reactions, was connected with the VP. Inactivation of dark reactions decreased the rate constant of the fast relaxation of the electrochromic pigment absorbance shift, which reflected a decrease in the H(+)-ATP synthase activity. This decrease likely contributed to the acidification of the chloroplast lumen, which developed after VP induction. However, VP-connected decrease of the proton motive force across the thylakoid membrane, possibly, reflected a decreased pH in the stroma. This decrease may be another mechanism of chloroplast lumen acidification. Overall, stroma acidification can decrease electron flow through photosystem I, and lumen acidification induces growth of fluorescence non-photochemical quenching and decreases electron flow through photosystem II, i.e., pH decreases in the stroma and lumen, possibly, contribute to the VP-induced inactivation of light reactions of photosynthesis.
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Affiliation(s)
- Vladimir Sukhov
- Department of Biophysics, N. I. Lobachevsky State University of Nizhny NovgorodNizhny Novgorod, Russia
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49
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Fusaro L, Gerosa G, Salvatori E, Marzuoli R, Monga R, Kuzminsky E, Angelaccio C, Quarato D, Fares S. Early and late adjustments of the photosynthetic traits and stomatal density in Quercus ilex L. grown in an ozone-enriched environment. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18 Suppl 1:13-21. [PMID: 26307426 DOI: 10.1111/plb.12383] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 08/17/2015] [Indexed: 06/04/2023]
Abstract
Quercus ilex L. seedlings were exposed in open-top chambers for one growing season to three levels of ozone (O3 ): charcoal filtered air, non-filtered air supplemented with +30% or +74% ambient air O3 . Key functional parameters related to photosynthetic performance and stomatal density were measured to evaluate the response mechanisms of Q. ilex to chronic O3 exposure, clarifying how ecophysiological traits are modulated during the season in an ozone-enriched environment. Dark respiration showed an early response to O3 exposure, increasing approximately 45% relative to charcoal-filtered air in both O3 enriched treatments. However, at the end of the growing season, maximum rate of assimilation (Amax ) and stomatal conductance (gs ) showed a decline (-13% and -36%, for Amax and gs , respectively) only in plants under higher O3 levels. Photosystem I functionality supported the capacity of Q. ilex to cope with oxidative stress by adjusting the energy flow partitioning inside the photosystems. The response to O3 was also characterised by increased stomatal density in both O3 enriched treatments relative to controls. Our results suggest that in order to improve the reliability of metrics for O3 risk assessment, the seasonal changes in the response of gs and photosynthetic machinery to O3 stress should be considered.
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Affiliation(s)
- L Fusaro
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - G Gerosa
- Department of Mathematics and Physics, Catholic University, Brescia, Italy
| | - E Salvatori
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - R Marzuoli
- Department of Mathematics and Physics, Catholic University, Brescia, Italy
| | - R Monga
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - E Kuzminsky
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - C Angelaccio
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - D Quarato
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
| | - S Fares
- Council for Agricultural Research and Economics, Research Centre for the Soil-Plant System, Rome, Italy
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50
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Šajbidorová V, Lichtnerová H, Paganová V. The Impact of Different Water Regime on Chlorophyll Fluorescence of Pyrus pyraster L. and Sorbus domestica L. ACTA UNIVERSITATIS AGRICULTURAE ET SILVICULTURAE MENDELIANAE BRUNENSIS 2015. [DOI: 10.11118/actaun201563051575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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