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Chen CI, Lin KH, Huang MY, Yao KY, Huang CC, Lin TC, Chu EL, Yang JD, Wang CW. Photo-protection and photo-inhibition during light induction in Barbula indica and Conocephalum conicum under different light gradients. PHOTOSYNTHESIS RESEARCH 2024; 159:191-202. [PMID: 37335528 DOI: 10.1007/s11120-023-01030-0] [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: 02/01/2023] [Accepted: 05/28/2023] [Indexed: 06/21/2023]
Abstract
The objectives of this study were to measure the chlorophyll fluorescence (ChlF) parameters of Barbula indica (Hook.) Spreng and Conocephalum conicum (L.) Dumort subjected to various light intensities (LI) as a reflection of their adaptability to their habitats. The electron transport rate (ETR) of all plants under 500 μmol m-2 s-1 photosynthetic photon flux density (PPFD) was significantly higher than other LI treatments, implying that these plants could be grown under a specific and optimal light intensity adapted to 500 PPFD conditions. As LI increased from 50 to 2,000 PPFD, we observed in all plants increased non-photochemical quenching (NPQ) and photo-inhibitory quenching (qI) and decreased photosystem II efficiency (ΦPSII), potential quantum efficiency of PSII (Fv/Fm), actual PSII efficiency (ΔF/Fm'%), and Fv/Fm%. In addition, energy-dependent quenching (qE), the light protection system (qE + qZ + qT), and qI increased as ΦPSII decreased and photo-inhibition% increased under 1000, 1500, and 2000 PPFD conditions, suggesting that these plants had higher photo-protective ability under high LI treatments to maintain higher photosynthetic system performance. B. indica plants remained photochemically active and maintained higher qE under 300, 500, and 1000 PPFD, whereas C. conicum qZ + qT exhibited higher photo-protection under 500, 1000, and 1500 PPFD conditions. These ChlF indices can be used for predicting photosynthetic responses to light induction in different bryophytes and provide a theoretical basis for ecological monitoring.
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Affiliation(s)
- Chung-I Chen
- Department of Forestry, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan, ROC
| | - Kuan-Hung Lin
- Department of Horticulture and Biotechnology, Chinese Culture University, Taipei, 11114, Taiwan, ROC
| | - Meng-Yuan Huang
- Department of Life Sciences and Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung, 40227, Taiwan, ROC
| | - Kuei-Yu Yao
- Department of Forestry, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan, ROC
| | | | - Tzu-Chao Lin
- Endemic Species Research Institute, Nantou, 552203, Taiwan, ROC
| | - En-Liang Chu
- Endemic Species Research Institute, Nantou, 552203, Taiwan, ROC
| | - Jia-Dong Yang
- Endemic Species Research Institute, Nantou, 552203, Taiwan, ROC.
| | - Ching-Wen Wang
- Endemic Species Research Institute, Nantou, 552203, Taiwan, ROC.
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Esmaeilzadeh M, Tavakol M, Mohseni F, Mahmoudi M, Nguyen UP, Fattahi M. Biomarkers for monitoring heavy metal pollution in the Anzali Wetland. MARINE POLLUTION BULLETIN 2023; 196:115599. [PMID: 37776744 DOI: 10.1016/j.marpolbul.2023.115599] [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: 08/26/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
This research aims to investigate biochemical activities of Phragmites australis, as a biomarker of heavy metals including Cr, Ni, V, Zn and Co. In order to determine and analyze biochemical parameters including flavonoids, Non-Protein Thiols (NPTs), chlorophyll a and b and total chlorophyll pigments in the roots, stems and leaves of P. australis, sediment and plant samples were collected from 7 stations in the Anzali wetland. Based on the obtained results, there were positive and significant correlation coefficients among the concentrations of the heavy metals in the sediments with non-protein thiols and flavonoids, also negative and significant correlation coefficients were found between the heavy metal contents and the total chlorophyll in the leaves in all the sampling stations. Therefore, it can be concluded that these parameters are appropriate biomarkers to evaluate the heavy metal pollution in the sediments of the aquatic ecosystem.
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Affiliation(s)
- Marjan Esmaeilzadeh
- Department of Civil Engineering, Faculty of Engineering, University of Science and Culture, Tehran, Iran.
| | - Mitra Tavakol
- Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farnaz Mohseni
- Department of Chemical Engineering, Payeme-Noor University, Tehran, Iran
| | - Mona Mahmoudi
- Department of Environmental Science, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - U P Nguyen
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering and Technology, Duy Tan University, Da Nang, Viet Nam
| | - Mehdi Fattahi
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; School of Engineering and Technology, Duy Tan University, Da Nang, Viet Nam.
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Salbitani G, Maresca V, Cianciullo P, Bossa R, Carfagna S, Basile A. Non-Protein Thiol Compounds and Antioxidant Responses Involved in Bryophyte Heavy-Metal Tolerance. Int J Mol Sci 2023; 24:ijms24065302. [PMID: 36982378 PMCID: PMC10049163 DOI: 10.3390/ijms24065302] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/23/2023] [Accepted: 03/04/2023] [Indexed: 03/12/2023] Open
Abstract
Heavy-metal pollution represents a problem which has been widely discussed in recent years. The biological effects of heavy metals have been studied in both animals and plants, ranging from oxidative stress to genotoxicity. Plants, above all metal-tolerant species, have evolved a wide spectrum of strategies to counteract exposure to toxic metal concentrations. Among these strategies, the chelation and vacuolar sequestration of heavy metals are, after cell-wall immobilization, the first line of defence that prevent heavy metals from interacting with cell components. Furthermore, bryophytes activate a series of antioxidant non-enzymatic and enzymatic responses to counteract the effects of heavy metal in the cellular compartments. In this review, the role of non-protein thiol compounds and antioxidant molecules in bryophytes will be discussed.
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