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Grinberg M, Ilin N, Nemtsova Y, Sarafanov F, Ivanova A, Dolinin A, Pirogova P, Vodeneev V, Mareev E. Response of photosynthesis and electrical reactions of wheat plants upon the action of magnetic fields in the Schumann resonance frequency band. PLANT SIGNALING & BEHAVIOR 2024; 19:2294425. [PMID: 38147417 PMCID: PMC10761032 DOI: 10.1080/15592324.2023.2294425] [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: 10/27/2023] [Accepted: 12/08/2023] [Indexed: 12/28/2023]
Abstract
Alternating magnetic fields (MF) with Schumann resonance frequencies accompanied the development of living organisms throughout evolution, but today it remains unclear whether they can have a special biological effect in comparison with surrounding non-resonant frequencies. This work shows some stimulating effect of extremely low-frequency MFs on morphometric parameters and the activity of physiological processes in wheat (Triticum aestivum L.). It is shown that the MF effect is more pronounced for transient processes - photosynthesis reactions and changes in electrical potential caused by turning on light. For light-induced electrical reactions, the dependence of the severity of the effect on the frequency of the applied MF was demonstrated. It is shown that the most pronounced effect occurs in the 14.3 Hz field, which corresponds to the second harmonic of the Schumann resonance. The predominant sensitivity of signal-regulatory systems gives reason to assume the influence of MFs with Schumann resonance frequencies on the interaction of plants with environmental factors under conditions of a changed electromagnetic environment. Such conditions can occur, for example, with an increase in lightning activity caused by climate change, which serves as the basis for the generation of Schumann resonances, and with the development of artificial ecosystems outside the Earth's atmosphere.
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Affiliation(s)
- Marina Grinberg
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
- Department of Geophysical Research, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Nikolay Ilin
- Department of Geophysical Research, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Yulia Nemtsova
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Fedor Sarafanov
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
- Department of Geophysical Research, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Angelina Ivanova
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Alexey Dolinin
- Department of Geophysical Research, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
| | - Polina Pirogova
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Vladimir Vodeneev
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Evgeny Mareev
- Department of Biophysics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
- Department of Geophysical Research, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
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Gao H, Wu F. Physiological and transcriptomic analysis of tomato in response to sub-optimal temperature stress. PLANT SIGNALING & BEHAVIOR 2024; 19:2332018. [PMID: 38511566 PMCID: PMC10962623 DOI: 10.1080/15592324.2024.2332018] [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: 11/16/2023] [Accepted: 02/06/2024] [Indexed: 03/22/2024]
Abstract
Tomato (Solanum lycopersicum L.) is one of the most important economic crops in China. However, its quality and yield are susceptible to the adverse effects of low temperatures. In our study, two tomato cultivars, showing different tolerance to low temperatures, namely the cold-sensitive tomato cultivar (S708) and cold-tolerant tomato cultivar (T722), were grown at optimal (25/18°C) and sub-optimal (15/10°C) temperature conditions for 5 days. Our study aimed to explore the effect of sub-optimal temperature on fresh weight, chlorophyll content and chlorophyll fluorescence, soluble sugars and proline content of two tomato cultivars. Moreover, we employed RNA-Seq to analyze the transcriptomic response of tomato roots to sub-optimal temperature. The results revealed that S708 showed a more significant reduction in fresh weight, chlorophyll content, photochemical efficiency of PSII (YII), maximum quantum yield of PSII (Fv/Fm), photochemical quenching (qP) and electron transport rate (ETR) compared to T722 under the sub-optimal temperature condition. Notably, T722 maintained higher level of soluble sugars and proline in comparison to S708 uner sub-optimal temperature. RNA-seq data showed that up-regulated DEGs in both tomato cultivars were involved in "plant-pathogen interaction", "MAPK signaling pathway", "plant hormone signal transduction", and "phosphatidylinositol signaling system". Furthermore, "Amino sugar and nucleotide sugar metabolism" pathway was enriched only in T722. Moreover, under sub-optimal temperature, transcription factor genes and osmoregulation genes showed varying degrees of response in both tomato cultivars. Conclusion: In summary, our results offer detailed insights into the response characteristics of tomato to sub-optimal temperature, providing valuable references for the practical management of tomato crops under sub-optimal temperature condition.
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Affiliation(s)
- Huan Gao
- College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China
| | - Fengzhi Wu
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture and Rural Affairs, Northeast Agricultural University, Harbin, China
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Tay ZHY, Ng FL, Thong CH, Lee CW, Gnana Kumar G, Al-Sehemi AG, Phang SM. Evaluation of selected tropical marine microalgal cultures for use in biophotovoltaic platforms. Appl Microbiol Biotechnol 2024; 108:71. [PMID: 38194143 PMCID: PMC10776707 DOI: 10.1007/s00253-023-12951-0] [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: 08/17/2023] [Revised: 11/10/2023] [Accepted: 11/17/2023] [Indexed: 01/10/2024]
Abstract
In this study, the bioelectrical power generation potential of four tropical marine microalgal strains native to Malaysia was investigated using BPV platforms. Chlorella UMACC 258 produced the highest power density (0.108 mW m-2), followed by Halamphora subtropica UMACC 370 (0.090 mW m-2), Synechococcus UMACC 371 (0.065 mW m-2) and Parachlorella UMACC 245 (0.017 mW m-2). The chlorophyll-a (chl-a) content was examined to have a linear positive relationship with the power density (p < 0.05). The photosynthetic performance of strains was studied using the pulse-amplitude modulation (PAM) fluorometer; parameters measured include the following: maximum quantum efficiency (Fv/Fm), alpha (α), maximum relative electron transport rate (rETRmax), photo-adaptive index (Ek) and non-photochemical quenching (NPQ). The Fv/Fm values of all strains, except Synechococcus UMACC 371, ranged between 0.37 and 0.50 during exponential and stationary growth phases, suggesting their general health during those periods. The low Fv/Fm value of Synechococcus UMACC 371 was possibly caused by the presence of background fluorescence from phycobilisomes or phycobiliproteins. Electrochemical studies via cyclic voltammetry (CV) suggest the presence of electrochemically active proteins on the cellular surface of strains on the carbon anode of the BPV platform, while morphological studies via field emission scanning electron microscope (FESEM) imaging verify the biocompatibility of the biofilms on the carbon anode. KEY POINTS: • Maximum power output of 0.108 mW m-2 is recorded by Chlorella UMACC 258 • There is a positive correlation between chl-a content and power output • Proven biocompatibility between biofilms and carbon anode sans exogenous mediators.
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Affiliation(s)
- Zoe Hui-Yee Tay
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Fong-Lee Ng
- Institute of Ocean and Earth Sciences (IOES), Universiti Malaya, Kuala Lumpur, Malaysia.
- School of Biosciences, Taylor's University, Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia.
| | - Cheng-Han Thong
- Institute of Ocean and Earth Sciences (IOES), Universiti Malaya, Kuala Lumpur, Malaysia
- Institute for Advanced Studies (IAS), Universiti Malaya, Kuala Lumpur, Malaysia
| | - Choon-Weng Lee
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
- Institute of Ocean and Earth Sciences (IOES), Universiti Malaya, Kuala Lumpur, Malaysia
| | - G Gnana Kumar
- Department of Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India
- Faculty of Engineering Technology & Built Environment, UCSI University, 56000, Kuala Lumpur, Malaysia
| | - Abdullah G Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, 61413, Abha, Saudi Arabia
| | - Siew-Moi Phang
- Institute of Ocean and Earth Sciences (IOES), Universiti Malaya, Kuala Lumpur, Malaysia.
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia.
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Courtene-Jones W, Cheung SWH, Thompson RC, Hanley ME. Effect of biodegradable and conventional microplastic exposure in combination with seawater inundation on the coastal terrestrial plant Plantago coronopus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124573. [PMID: 39029863 DOI: 10.1016/j.envpol.2024.124573] [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: 05/21/2024] [Revised: 06/28/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Coastal ecosystems face a multitude of pressures including plastic pollution and increased flood risk due to sea level rise and the frequency and severity of storms. Experiments seldom examine multiple stressors such as these, but here we quantified the effect of microplastics (polyethylene terephthalate (PET): a durable plastic and polybutylene adipate terephthalate (PBAT): a biodegradable polymer), in combination with simulated seawater inundation on the coastal species Plantago coronopus. After 35-days exposure to plastic (0.02 g.Kg-1, <300 μm diameter), P. coronopus were flooded to pot height with artificial seawater for 72-h, drained and grown for a further 24-days. Plant mortality, necrosis and photosynthetic efficiency (Fv/Fm) were recorded throughout, with root:shoot biomass and scape production (flower stalks) quantified at harvest. There were significant interactions between microplastics and seawater on the root:shoot ratio; a measure of resource allocation. The allocation to belowground biomass increased significantly under the PET + inundation treatment compared to the PBAT + inundation and the no plastic + inundation treatments, with potential consequences on the capture of water, nutrients and sunlight, which can affect plant performance. Plant necrosis significantly increased, and Fv/Fm declined as a result of seawater inundation. While not significant, plant Fv/Fm responses were influenced by microplastics (17% and 7% reduction in PBAT and PET exposure respectively compared to the no plastic control). Plants mediated this stress response with no discernible treatment-specific effects detected in Fv/Fm 14-days after seawater introduction. Plastic exposure significantly influenced potential reproductive output, with lower average scape numbers across PBAT treatments, but higher in PET treatments. This study highlights the complex interactions and potential for microplastics to present an elevated risk when in combination with additional stressors like seawater flooding; establishing the threat presented to ecosystem resilience in a changing world is a priority.
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Affiliation(s)
- W Courtene-Jones
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK.
| | - S W H Cheung
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK
| | - R C Thompson
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK
| | - M E Hanley
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon, PL4 8AA, UK
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Jia J, Jiang H, Zhu X, Wang S, Wang L, Liu C, Li W, Huang W. Inorganic carbon utilization strategies of plateau aquatic plants in response to native habitats. PHOTOSYNTHESIS RESEARCH 2024; 162:47-62. [PMID: 39133367 DOI: 10.1007/s11120-024-01115-4] [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: 05/29/2024] [Accepted: 07/29/2024] [Indexed: 08/13/2024]
Abstract
Aquatic plants are a crucial component of the aquatic ecosystem in the Tibetan Plateau region. Researching the adaptability of plateau aquatic plants in photosynthesis to the plateau environment can enhance understanding of the operational mechanisms of plateau ecosystems, thereby providing a scientific basis for the protection and management of plateau aquatic ecosystems. This study presents an investigation of photosynthetic inorganic carbon utilization strategies and photosynthetic efficiency of 17 aquatic plants under natural growing conditions in Niyang River basin on the Tibetan Plateau. In pH-drift experiments, 10 of 17 species were able to utilize HCO3-, and environmental factors like water pH were shown to have a significant effect on the ability of the tested species to utilize HCO3-. Titratable acidity in the leaves of Stuckenia filiformis, Zannichellia palustris, Batrachium bungei, and Myriophyllum spicatum showed significant diurnal fluctuations at certain sampling sites, indicating the presence of CAM. In B. bungei, water pH positively correlated with CAM activity, while CO2 concentration negatively correlated with CAM activity. The chlorophyll fluorescence analysis revealed that aquatic plants inhabiting the Tibetan Plateau exhibited photosynthetic adaptations. In conclusion, the aquatic plants on the Tibetan Plateau employ diverse strategies for utilizing inorganic carbon during photosynthesis, exhibiting their flexible adaptability to the native high-altitude habitats of the Tibetan Plateau.
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Affiliation(s)
- Jiajia Jia
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, 850000, China
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Hongsheng Jiang
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Xi Zhu
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, School of Life Sciences, Hainan University, HaiKou, 570228, China
| | - Shanwei Wang
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Liyuan Wang
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | | | - Wei Li
- Key Laboratory of Biodiversity and Environment on the Qinghai-Tibetan Plateau, Ministry of Education, School of Ecology and Environment, Tibet University, Lhasa, 850000, China.
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
- Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
- Yani Wetland Ecosystem Positioning Observation and Research Station, Tibet University, Lhasa, China.
| | - Wenmin Huang
- Aquatic Plant Research Center, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
- Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
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Mahmoud AEM, Battaglia ML, Rady MM, Mohamed IAA, Alharby HF, Belal HEE, Desoky ESM, Galal TM, Ali EF. Alleviation of cadmium toxicity in soybean (Glycine max L.): Up-regulating antioxidant capacity and enzyme gene expressions and down-regulating cadmium uptake by organic or inorganic selenium. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:109068. [PMID: 39216160 DOI: 10.1016/j.plaphy.2024.109068] [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: 05/08/2024] [Revised: 08/18/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
Although much interest has been focused on the role of selenium (Se) in plant nutrition over the last 20 years, the influences of organic selenium (selenomethionine; Se-Met) and inorganic selenium (potassium selenite; Se-K) on the growth and physiological characters of cadmium (Cd)-stressed Glycine max L.) seedlings have not yet been studied. In this study, the impacts of Se-Met or Se-K on the growth, water physiological parameters (gaseous exchange and leaf water content), photosynthetic and antioxidant capacities, and hormonal balance of G. max seedlings grown under 1.0 mM Cd stress were studied. The results showed that 30 μM Se-K up-regulates water physiological parameters, photosynthetic indices, antioxidant systems, enzymatic gene expression, total antioxidant activity (TAA), and hormonal balance. In addition, it down-regulates levels of reactive oxygen species (ROS; superoxide free radicals and hydrogen peroxide), oxidative damage (malondialdehyde content as an indicator of lipid peroxidation and electrolyte leakage), Cd translocation factor, and Cd content of Cd-stressed G. max seedlings. These positive findings were in favor of seedling growth and development under Cd stress. However, 50 μM Se-Met was more efficient than 30 μM Se-K in promoting the above-mentioned parameters of Cd-stressed G. max seedlings. From the current results, we conclude Se-Met could represent a promising strategy to contribute to the development and sustainability of crop production on soils contaminated with Cd at a concentration of up to 1.0 mM. However, further work is warranted to better understand the precise mechanisms of Se-Met action under Cd stress conditions.
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Affiliation(s)
- Amr E M Mahmoud
- Biochemistry Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt
| | - Martin L Battaglia
- Center for Sustainability Science, The Nature Conservancy, Arlington, VA, 22203, USA
| | - Mostafa M Rady
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt.
| | - Ibrahim A A Mohamed
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt
| | - Hesham F Alharby
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; Plant Biology Research Group, Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Hussein E E Belal
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt
| | - El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Tarek M Galal
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
| | - Esmat F Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
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Moeen-Ud-Din M, Wang S, Yang S, Wang J. The combined effects of copper and zinc on Arabidopsis involve differential regulation of chlorophyll synthesis and photosystem function. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 216:109160. [PMID: 39357197 DOI: 10.1016/j.plaphy.2024.109160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 09/15/2024] [Accepted: 09/25/2024] [Indexed: 10/04/2024]
Abstract
Copper (Cu) and zinc (Zn) are both oxidation-reducing metal elements that are necessary for plant growth, and their effect often depends on their concentration. However, there are few studies that have investigated how plants are stressed and affected when the two ions are present simultaneously, especially when one ion is beneficial due to a low concentration and the other is detrimental due to a high concentration. To address this question, we treated Arabidopsis plants with either high or/and low concentrations of the two ions and investigated their mutual effects and the underlying molecular mechanism, focusing on photosynthetic function. The results showed that the photosynthetic pigment content and the performance of photosynthetic systems were most affected when both metal ions were present at detrimental concentrations (60 μM Cu for Cu60 and 350 μM Zn for Zn350). These include the effective openness of the photoreaction center, the electron transport rate and efficiency of photosystem II (PSII), the NPQ-dependent energy dissipation and the activity of photosystem I (PSI). However, when the harmful concentration of one of the two metals is combined with the beneficial concentration of the other metal (Cu5+Zn350 or Zn50+Cu60), these photosynthetic indicators are compensated to different degrees but the negative effects of copper ions at high dose are more difficult to eliminate than zinc ions. These results were also confirmed by gene expression analysis, which provides a clue to understanding the interaction between heavy metal ions, reducing metal toxicity and improving the tolerance of plants to heavy metals in practice.
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Affiliation(s)
- Muhammad Moeen-Ud-Din
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Shuaiqi Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Shaohui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jiehua Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
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Sullivan CN, Koski MH. An elevational cline in leaf variegation: Testing anti-herbivory and abiotic heterogeneity hypotheses in maintaining a polymorphism. AMERICAN JOURNAL OF BOTANY 2024:e16411. [PMID: 39323053 DOI: 10.1002/ajb2.16411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 09/27/2024]
Abstract
PREMISE While some studies have found leaf variegation to reduce photosynthetic capacity, others showed that it can increase photosynthesis. Thus, what maintains variegation remains an open question. Two primary hypotheses-the anti-herbivory and abiotic heterogeneity hypotheses-have been posited, yet little empirical research explicitly investigates the maintenance of naturally occurring variegation. METHODS We used field surveys, image analysis, and climatic associations to explore the anti-herbivory and abiotic heterogeneity hypotheses in 21 populations of Hexastylis heterophylla and H. shuttleworthii, both polymorphic for leaf variegation. We measured the frequency of variegated individuals, variegation intensity, and herbivory for each morph, assessed abiotic correlates with variegation, and measured photosynthetic efficiency. RESULTS We found a strong elevational cline in leaf variegation strongly linked with abiotic heterogeneity; variegation was more common in lower-elevation populations characterized by higher temperatures, UV-B exposure, seasonal light change, and drier, more basic soils. Variegated and nonvariegated individuals experienced similar levels of herbivory. Morphs had similar photosynthetic quantum yields. However, nonvariegated leaves experienced more nonphotochemical quenching, an indication of photoinhibition, and had higher surface temperatures under high light. CONCLUSIONS Our results suggest that variegation may serve as an adaptation to high temperatures and light conditions and can reduce photoinhibition in certain environmental contexts. Thus, abiotic factors can maintain variegation in wild populations and shape geographic clines in variegation.
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Affiliation(s)
- Cierra N Sullivan
- Department of Biological Sciences, Clemson University, Clemson, 29634, SC, USA
| | - Matthew H Koski
- Department of Biological Sciences, Clemson University, Clemson, 29634, SC, USA
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Middleby KB, Cheesman AW, Hopkinson R, Baker L, Ramirez Garavito S, Breed MF, Cernusak LA. Ecotypic Variation in Leaf Thermoregulation and Heat Tolerance but Not Thermal Safety Margins in Tropical Trees. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39318061 DOI: 10.1111/pce.15141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/31/2024] [Accepted: 08/22/2024] [Indexed: 09/26/2024]
Abstract
To avoid reaching lethal temperatures during periods of heat stress, plants may acclimate either their biochemical thermal tolerance or leaf morphological and physiological characteristics to reduce leaf temperature (Tleaf). While plants from warmer environments may have a greater capacity to regulate Tleaf, the extent of intraspecific variation and contribution of provenance is relatively unexplored. We tested whether upland and lowland provenances of four tropical tree species grown in a common garden differed in their thermal safety margins by measuring leaf thermal traits, midday leaf-to-air temperature differences (∆Tleaf) and critical leaf temperatures defined by chlorophyll fluorescence (Tcrit). Provenance variation was species- and trait-specific. Higher ∆Tleaf and Tcrit were observed in the lowland provenance for Terminalia microcarpa, and in the upland provenance for Castanospermum australe, with no provenance effects in the other two species. Within-species covariation of Tcrit and ∆Tleaf led to a convergence of thermal safety margins across provenances. While future studies should expand the number of provenances and species investigated, our findings suggest that lowland and upland provenances may not differ substantially in their vulnerability to heat stress, as determined by thermal safety margins, despite differences in operating temperatures and Tcrit.
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Affiliation(s)
- Kali B Middleby
- College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
| | - Alexander W Cheesman
- College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
| | | | - Leesa Baker
- College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
| | | | - Martin F Breed
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Lucas A Cernusak
- College of Science and Engineering, James Cook University, Cairns, Queensland, Australia
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Nowakowska J, Dang M, Kiełtyk P, Niemczyk M, Malewski T, Szulc W, Rutkowska B, Borowik P, Oszako T. Silicon Modifies Photosynthesis Efficiency and hsp Gene Expression in European Beech ( Fagus sylvatica) Seedlings Exposed to Drought Stress. Genes (Basel) 2024; 15:1233. [PMID: 39336824 PMCID: PMC11431362 DOI: 10.3390/genes15091233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2024] [Revised: 09/18/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
Background: Climate change is leading to severe and long-term droughts in European forest ecosystems. can have profound effects on various physiological processes, including photosynthesis, gene expression patterns, and nutrient uptake at the developmental stage of young trees. Objectives: Our study aimed to test the hypothesis that the application of silica (SiO2) influences photosynthetic efficiency and gene expression in 1- to 2-year-old Fagus sylvatica (L.) seedlings. Additionally, we aimed to assess whether silicon application positively influences the structural properties of leaves and roots. To determine whether the plant physiological responses are genotype-specific, seedlings of four geographically different provenances were subjected to a one-year evaluation under greenhouse conditions. Methods: We used the Kruskal-Wallis test followed by Wilcoxon's test to evaluate the differences in silicon content and ANOVA followed by Tukey's test to evaluate the physiological responses of seedlings depending on treatment and provenance. Results: Our results showed a significantly higher Si content in the roots compared with the leaves, regardless of provenance and treatment. The most significant differences in photosynthetic performance were found in trees exposed to Si treatment, but the physiological responses were generally nuanced and provenance-dependent. Expression of hsp70 and hsp90 was also increased in leaf tissues of all provenances. These results provide practical insights that Si can improve the overall health and resilience of beech seedlings in nursery and forest ecosystems, with possible differences in the beneficial role of silicon application arising from the large differences in wild populations of forest tree species.
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Affiliation(s)
- Justyna Nowakowska
- Faculty of Biology and Environmental Sciences, Institute of Biological Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland; (J.N.); (P.K.)
| | - Monika Dang
- Faculty of Biology and Environmental Sciences, Institute of Biological Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland; (J.N.); (P.K.)
| | - Piotr Kiełtyk
- Faculty of Biology and Environmental Sciences, Institute of Biological Sciences, Cardinal Stefan Wyszynski University in Warsaw, 01-938 Warsaw, Poland; (J.N.); (P.K.)
| | - Marzena Niemczyk
- Department of Silviculture and Forest Tree Genetics, Forest Research Institute, 05-090 Sękocin Stary, Poland;
| | - Tadeusz Malewski
- Department of Molecular and Biometric Techniques, Museum and Institute of Zoology, 00-679 Warsaw, Poland;
| | - Wiesław Szulc
- Institute of Agriculture, Warsaw University of Life Sciences, 02-787 Warsaw, Poland; (W.S.); (B.R.)
| | - Beata Rutkowska
- Institute of Agriculture, Warsaw University of Life Sciences, 02-787 Warsaw, Poland; (W.S.); (B.R.)
| | - Piotr Borowik
- Forest Protection Department, Forest Research Institute, 05-090 Sękocin Stary, Poland;
| | - Tomasz Oszako
- Forest Protection Department, Forest Research Institute, 05-090 Sękocin Stary, Poland;
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11
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Zhang Z, Fang J, Jin H, Zhang L, Fang S. Application of oxide nanoparticles mitigates the salt-induced effects on photosynthesis and reduces salt injury in Cyclocarya paliurus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 954:176333. [PMID: 39304156 DOI: 10.1016/j.scitotenv.2024.176333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/09/2024] [Accepted: 09/15/2024] [Indexed: 09/22/2024]
Abstract
Salinization is very detrimental to photosynthetic processes and plant growth, while nanoparticles (NPs) are considered to be the emerging materials to improve plant adaptability to salt stress. Cyclocarya paliurus is being planted on saline-alkali soils to meet the growing demand for its leaves and medicinal products. However, this species exhibits low salt tolerance and little information is available on whether NPs application would mitigate the salt-induced effects. This study explored the influence of three oxide NPs and their application doses on improving salt tolerance in C. paliurus under simulated natural conditions. The results showed that these oxide NPs could modify the salt tolerance in C. paliurus seedlings, but the alleviating effects varied in the NPs types and their application doses. Under the salt stress, foliar applications of SiO2-NPs with 500 mg L-1 and MnO2-NPs with 50 mg L-1 significantly increased net photosynthetic rate and seedling height by 52.0-59.5 %, and reduced the salt injury index by 67.6-70.7 %. Transcriptomic analysis revealed that the genes related to photosynthesis pathway were well responsive to both salt stress and NPs application, while the applications of high-dose SiO2- and MnO2-NPs up-regulated the expression of 50 photosynthesis-related genes. Weighted gene co-expression network analysis (WGCNA) indicated there existed a close relationship between physiological parameters and gene expression patterns, and the nine key genes in mitigating salt stress in C. paliurus were identified after the NPs application. Our findings suggested that the effects of NPs on mitigating salt-induced damages depending on the NP type and applied dose. The applications of SiO2-NPs and MnO2-NPs with an appropriate dose hold great promise for mitigating the salt-induced photosynthetic dysfunction via regulation of related key genes, and ultimately promoting plant growth and ameliorating the salt-tolerance.
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Affiliation(s)
- Zijie Zhang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China
| | - Jie Fang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China
| | - Huiyin Jin
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China
| | - Lei Zhang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Shengzuo Fang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
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12
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Kulus D, Tymoszuk A, Kulpińska A, Viehmannova I, Wojnarowicz J, Szałaj U. Effect of nanoparticles on the ex-vitro performance of cryopreservation-derived plant material. PLoS One 2024; 19:e0310424. [PMID: 39264924 PMCID: PMC11392386 DOI: 10.1371/journal.pone.0310424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 08/31/2024] [Indexed: 09/14/2024] Open
Abstract
The integration of nanoparticles into plant cryopreservation protocols holds great promise for improving the survival rates and recovery potential of explants. This study aimed to verify the effect of nanoparticles on the ex-vitro performance of cryopreservation-derived plants. Lamprocapnos spectabilis (L.) Fukuhara (bleeding heart) 'Gold Heart' and 'Valentine' cultivars were used as the plant material. The encapsulation-vitrification cryopreservation protocol of shoot tips included the preculture, encapsulation, dehydration, storage in liquid nitrogen, rewarming, and recovery steps. Gold (AuNPs), silver (AgNPs), or zinc oxide (ZnONPs) nanoparticles were added at varying concentrations, either into the preculture medium or the protective bead matrix during encapsulation. After the in vitro recovery, the plants were transferred to the glasshouse and subjected to detailed biometrical, biochemical and cytogenetic analyses. Nanoparticles had no evident effect on the acclimatization efficiency (80-100% survival) and leaf number in L. spectabilis 'Gold Heart'. Nonetheless, shoots developed from alginate beads supplemented with 5 ppm AuNPs were twice as long as the control, while the leaves of plants grown on the preculture medium with ZnONPs contained significantly more chlorophyll and had higher Leaf Soil-Plant Analysis Development (SPAD) values. Moreover, several NPs treatments stimulated the development of leaves, including their surface area, length, and perimeter. Higher ZnONPs levels enhanced also the replication process, resulting in higher nuclear DNA content. As for L. spectabilis 'Valentine', alginate augmentation with 5 ppm AgNPs or 5 ppm ZnONPs stimulated the elongation of shoots. There was also a tendency suggesting a positive influence of 5 ppm AgNPs in the alginate bead matrix on foliar growth. The effect of nanoparticles on the content of flavonoids, anthocyanins, and stress markers in the plants varied depending on the treatment and cultivar, but also on the organ studied (leaf or stem). Overall, L. spectabilis 'Gold Heart' was more stress-tolerant and genetically stable than 'Valentine' judging by the activity of Photosystem II (PSII) and flow cytometric analyses, respectively. The complex effects of nanoparticles on survival, biometric parameters, physiological responses, and cytogenetic events underscore the intricate interplay between nanoparticles and plant systems. Nonetheless, our research confirmed the positive effect of nanoparticles on the ex-vitro growth and development of L. spectabilis plants after cryostorage.
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Affiliation(s)
- Dariusz Kulus
- Laboratory of Horticulture, Faculty of Agriculture and Biotechnology, Bydgoszcz University of Science and Technology, Bydgoszcz, Poland
| | - Alicja Tymoszuk
- Laboratory of Horticulture, Faculty of Agriculture and Biotechnology, Bydgoszcz University of Science and Technology, Bydgoszcz, Poland
| | - Alicja Kulpińska
- Laboratory of Horticulture, Faculty of Agriculture and Biotechnology, Bydgoszcz University of Science and Technology, Bydgoszcz, Poland
| | - Iva Viehmannova
- Department of Crop Sciences and Agroforestry, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Prague, Czech Republic
| | - Jacek Wojnarowicz
- Laboratory of Nanostructures, Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
| | - Urszula Szałaj
- Laboratory of Nanostructures, Institute of High Pressure Physics, Polish Academy of Sciences, Warsaw, Poland
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13
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Stuij TM, Cleary DFR, Rocha RJM, Polonia ARM, Machado E Silva DA, Frommlet JC, Louvado A, Huang YM, De Voogd NJ, Gomes NCM. Development and validation of an experimental life support system to study coral reef microbial communities. Sci Rep 2024; 14:21260. [PMID: 39261551 PMCID: PMC11391067 DOI: 10.1038/s41598-024-69514-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 08/06/2024] [Indexed: 09/13/2024] Open
Abstract
In the present study, we developed and validated an experimental life support system (ELSS) designed to investigate coral reef associated bacterial communities. The microcosms in the ELSS consisted of coral reef sediment, synthetic seawater, and specimens of five benthic reef species. These included two hard corals Montipora digitata and Montipora capricornis, a soft coral Sarcophyton glaucum, a zoanthid Zoanthus sp., and a sponge Chondrilla sp.. Physicochemical parameters and bacterial communities in the ELSS were similar to those observed at shallow coral reef sites. Sediment bacterial evenness and higher taxonomic composition were more similar to natural-type communities at days 29 and 34 than at day 8 after transfer to the microcosms, suggesting microbial stabilization after an initial recovery period. Biotopes were compositionally distinct but shared a number of ASVs. At day 34, sediment specific ASVs were found in hosts and visa versa. Transplantation significantly altered the bacterial community composition of M. digitata and Chondrilla sp., suggesting microbial adaptation to altered environmental conditions. Altogether, our results support the suitability of the ELSS developed in this study as a model system to investigate coral reef associated bacterial communities using multi-factorial experiments.
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Affiliation(s)
- T M Stuij
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal.
| | - D F R Cleary
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - R J M Rocha
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - A R M Polonia
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - D A Machado E Silva
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - J C Frommlet
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - A Louvado
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal
| | - Y M Huang
- National Penghu University of Science and Technology, Magong, Taiwan
| | - N J De Voogd
- Naturalis Biodiversity Center, Leiden, the Netherlands
- Institute of Biology (IBL), Leiden University, Leiden, the Netherlands
| | - N C M Gomes
- Centre for Environmental and Marine Studies (CESAM) and Department of Biology, University of Aveiro, Campus Universitário Santiago, 3810-193, Aveiro, Portugal.
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14
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Bermúdez R, Sánchez Vilas J, Retuerto R. Species-specific functional trait responses in two species coexisting along a shore-to-inland dune gradient. PLANT BIOLOGY (STUTTGART, GERMANY) 2024. [PMID: 39250313 DOI: 10.1111/plb.13710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Accepted: 07/23/2024] [Indexed: 09/11/2024]
Abstract
Coastal dunes are characterised by strong gradients of abiotic stress, typically increasing in severity from inland areas towards the shoreline. Thus, dune gradients represent unique opportunities to study intraspecific responses to environmental changes and to investigate which factors drive community change. This study aims to examine functional trait variation in two coexisting species in response to environmental changes along a dune gradient in NW Spain. Trait convergence was also investigated and compared between both ends of the gradient. We measured functional leaf traits related to plant efficiency in the use of light, water and nutrients, also possible stressors (salt content and pH) and availability of limiting resources (water and nutrients) in the soil. Most soil variables showed changes following a non-directional gradient. Differences in soil variables were site specific and depended on growth of the study species. Structural and functional traits depended on species and/or plant position on the gradient, except for effective quantum yield of PSII and leaf δ15N. The pattern of variation was mostly directional for reflectance indices related to leaf physiology. Multivariate analyses showed significant interspecific differences in the set of traits they exhibited along positions in the gradient. Species also differed in the combination of traits selected under given environmental conditions. Coexisting species display a specific set of traits that reflects different strategies to environmental stress. Our study highlights the overly simplistic nature of some previous studies that assume dune gradients are monotonically directional, without considering that these gradients may be differentially modified by species activity.
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Affiliation(s)
- R Bermúdez
- Department Forest Resources, University of Minnesota, St Paul, MN, USA
| | - J Sánchez Vilas
- Organisms and Environment Division, Cardiff School of Biosciences, Cardiff University, Cardiff, UK
- Department of Functional Biology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - R Retuerto
- Department of Functional Biology, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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15
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Addesso R, Baldantoni D, Cubero B, De La Rosa JM, Gutierrez-Patricio S, Tiago I, Caldeira AT, De Waele J, Miller AZ. Unveiling the menace of lampenflora to underground tourist environments. Sci Rep 2024; 14:20789. [PMID: 39242666 PMCID: PMC11379952 DOI: 10.1038/s41598-024-66383-5] [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: 09/19/2023] [Accepted: 07/01/2024] [Indexed: 09/09/2024] Open
Abstract
Permanent artificial lighting systems in tourist underground environments promote the proliferation of photoautotrophic biofilms, commonly referred to as lampenflora, on damp rock and sediment surfaces. These green-colored biofilms play a key role in the alteration of native community biodiversity and the irreversible deterioration of colonized substrates. Comprehensive chemical or physical treatments to sustainably remove and control lampenflora are still lacking. This study employs an integrated approach to explore the biodiversity, eco-physiology and molecular composition of lampenflora from the Pertosa-Auletta Cave, in Italy. Reflectance analysis showed that photoautotrophic biofilms are able to absorb the totality of the visible spectrum, reflecting only the near-infrared light. This phenomenon results from the production of secondary pigments and the adaptability of these organisms to different metabolic regimes. The biofilm structure mainly comprises filamentous organisms intertwined with the underlying mineral layer, which promote structural alterations of the rock layer due to the biochemical attack of both prokaryotes (mostly represented by Brasilonema angustatum) and eukaryotes (Ephemerum spinulosum and Pseudostichococcus monallantoides), composing the community. Regardless of the corrosion processes, secondary CaCO3 minerals are also found in the biological matrix, which are probably biologically mediated. These findings provide valuable information for the sustainable control of lampenflora.
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Affiliation(s)
- Rosangela Addesso
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
- Department of European and Mediterranean Cultures (DiCEM), Università degli Studi della Basilicata, via Lanera 20, 75100, Matera, Italy
| | - Daniela Baldantoni
- Department of Chemistry and Biology "Adolfo Zambelli", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy
| | - Beatriz Cubero
- Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Av. Reina Mercedes, 10, 41012, Sevilla, Spain
| | - José Maria De La Rosa
- Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Av. Reina Mercedes, 10, 41012, Sevilla, Spain
| | - Sara Gutierrez-Patricio
- Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Av. Reina Mercedes, 10, 41012, Sevilla, Spain
| | - Igor Tiago
- Department of Life Sciences, University of Coimbra, Rua da Matemática, 49, 3000-276, Coimbra, Portugal
| | - Ana Teresa Caldeira
- HERCULES Laboratory, University of Évora, Largo Marques de Marialva 8, 7000-809, Évora, Portugal
| | - Jo De Waele
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Zamboni, 67, 40126, Bologna, Italy
| | - Ana Z Miller
- Instituto de Recursos Naturales y Agrobiología de Sevilla, IRNAS-CSIC, Av. Reina Mercedes, 10, 41012, Sevilla, Spain.
- HERCULES Laboratory, University of Évora, Largo Marques de Marialva 8, 7000-809, Évora, Portugal.
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16
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Massa A, Santos É, Martins D, Azevedo J, Reimão M, Almeida A, Azevedo R, Pinto E, Vasconcelos V, Campos A, Freitas M. Toxic and non-toxic cyanobacterial biomass as a resource for sustainable agriculture: A lettuce cultivation experiment. ENVIRONMENTAL RESEARCH 2024; 262:119942. [PMID: 39243846 DOI: 10.1016/j.envres.2024.119942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/31/2024] [Accepted: 09/04/2024] [Indexed: 09/09/2024]
Abstract
Cyanobacteria represent a promising resource for sustainable agriculture, as they have demonstrated the ability to restore soil fertility even after death and decay. However, several cyanobacteria can also release secondary metabolites, such as cyanotoxins, which may compromise the quality of agricultural products and pose a potential risk to human health. Depending on the concentration of exposure, few studies reported deleterious effects on plant species when irrigated with cylindrospermopsin (CYN) contaminated water, impairing plant growth and leading to food product contamination, while other studies show promoting effects on plant yield. To evaluate the potential of cyanobacterial biomass (cyanotoxin-containing or not) as a sustainable resource for soil amendment, biostimulants or fertilizers for lettuce cultivation, a study was carried out that consisted of the culture of lettuce plants under controlled conditions, in soil: (1) with no extra nutrient addition (control) and supplemented with 0.6 g of freeze-dried Raphidiopsis raciborskii biomass of (2) a non-CYN-producing strain, (3) a CYN-producing strain, and (4) the same CYN-producing strain pasteurized. Results showed no significant differences in photosystem II efficiency with the amendment addition. On the contrary, shoot fresh weight significantly increased in lettuce plants grown with the cyanobacterial biomass addition, especially in condition (3). In addition, there were significant differences in mineral concentrations in lettuce leaves after the cyanobacterial biomass addition, such as K, Na, Ca, P, Mg, Mn, Zn, Cu, Mo, and Co. CYN accumulation was detected under conditions (3) and (4), with concentrations observed in descending order from roots > soil > shoot. Nevertheless, the CYN concentration in edible tissues did not exceed the WHO-proposed tolerable daily intake of 0.03 μg/kg/day. These findings suggest that incorporating cyanobacterial biomass as a soil amendment, biostimulant or fertilizer for lettuce cultivation, even with trace amounts of CYN (1-40 μg/g), may enhance plant yield without leading to cyanotoxin accumulation in edible tissues above the WHO-recommended tolerable daily intake.
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Affiliation(s)
- Anabella Massa
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; School of Medicine and Biomedical Sciences, Porto University, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal; Universidad Del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Barrio Sarriena S/n, 48940, Leioa, Spain; Université de Pau et des Pays de L'Adour (UPPA), Av. de L'Université, 64000, Pau, France; Faculty of Sciences, Porto University (FCUP), Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal
| | - Érica Santos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; ESS, Polytechnic of Porto (ESS|P.PORTO), Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal
| | - Diogo Martins
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; ESS, Polytechnic of Porto (ESS|P.PORTO), Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal
| | - Joana Azevedo
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal
| | - Mariana Reimão
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; ESS, Polytechnic of Porto (ESS|P.PORTO), Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal
| | - Agostinho Almeida
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, Porto University, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Rui Azevedo
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, Porto University, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Edgar Pinto
- REQUIMTE/LAQV, ESS, Polytechnic of Porto (ESS|P.PORTO), Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; Faculty of Sciences, Porto University (FCUP), Rua Do Campo Alegre S/n, 4169-007, Porto, Portugal
| | - Alexandre Campos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal
| | - Marisa Freitas
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Porto University, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/n, 4450-208, Matosinhos, Portugal; ESS, Polytechnic of Porto (ESS|P.PORTO), Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal.
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Huang J, Xuan X, Xu D, Wen Y. Dual-Mediated Roles of H +-ATPase in Alleviating the Phytotoxicity of Imazethapyr to Nontarget Wheat. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:19333-19341. [PMID: 39183467 DOI: 10.1021/acs.jafc.4c06062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
The regulation solutions and mechanisms of reducing pesticide phytotoxicity to nontarget plants are not well-defined and detailed. Here, we have proposed a new detoxification strategy to control the toxic effects of herbicide imazethapyr (IM) induced in wheat seedlings from the perspective of the plasma membrane (PM) H+-ATPase. We found that the changes in PM H+-ATPase activity have a regulatory effect on the phytotoxic effects induced by IM in plants. Treatment with PM H+-ATPase activators restored the reduced auxin content and photosynthetic efficiency caused by IM, thereby promoting plant growth. Application of a PM H+-ATPase inhibitor further reduced phosphorus content and significantly increased 2,4-dihydroxy-7-methoxy-2H,1,4-benzoxazin-3(4H)one (DIMBOA) and jasmonic acid levels. These effects indicate that auxin and DIMBOA may regulate plant growth trends and detoxification effects mediated by PM H+-ATPase. This work opens a new strategy for regulating herbicide toxicity to nontarget plants from the PM H+-ATPase.
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Affiliation(s)
- Jinye Huang
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
- MOE Key Laboratory of Environmental Remediation & Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xuan Xuan
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Dongmei Xu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Yuezhong Wen
- MOE Key Laboratory of Environmental Remediation & Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
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18
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Ren J, Cao T, Zang X, Liu J, Yang D. Antifungal mechanisms and characteristics of Pseudomonas fluorescens: Promoting peanut growth and combating Fusarium oxysporum-induced root rot. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 216:109092. [PMID: 39241626 DOI: 10.1016/j.plaphy.2024.109092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 08/17/2024] [Accepted: 09/02/2024] [Indexed: 09/09/2024]
Abstract
Continuous cropping of peanuts presents significant challenges to sustainable production due to soil-borne diseases like root rot caused by Fusarium species. In this study, field inoculation experiments treatments and in vitro agar plate confrontation tests were conducted, including non-inoculated controls (CK), inoculation with Pseudomonas fluorescens (PF), Fusarium oxysporum (FO), and co-inoculation with both (PF + FO). The aim was to explore the antifungal mechanisms of Pseudomonas fluorescens in mitigating root rot and enhancing peanut yield. The results indicated that PF and PF + FO significantly enhanced peanut root activity, as well as superoxide dismutase, catalase, and glutathione S-transferase activities, while simultaneously decreasing the accumulation of reactive oxygen species and malondialdehyde contents, compared to FO treatment. Additionally, PF treatment notably increased lignin content through enhanced phenylalanine ammonia lyase, cinnamate 3-hydroxylase, and peroxidase activity compared to CK and FO treatment. Moreover, PF treatment resulted in longer roots and a higher average diameter and surface area, potentially due to increased endogenous levels of auxin and zeatin riboside, coupled with decreased abscisic acid content. PF treatment significantly elevated chlorophyll content and the maximum photochemical efficiency of PSII in the light-adapted state, the actual photochemical efficiency and the proportion of PSII reaction centers open, leading to improved photosynthetic performance. Confrontation culture assays revealed PF's notable inhibitory effects on Fusarium oxysporum growth, subsequently reducing rot disease incidence in the field. Ultimately, PF treatment led to increased peanut yield by enhancing plant numbers and pod weight compared to FO treatment, indicating its potential in mitigating Fusarium oxysporum-induced root rot disease under continuous cropping systems.
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Affiliation(s)
- Jinfeng Ren
- Agronomy College of Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Tianxiao Cao
- Agronomy College of Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Xiuzhi Zang
- Agronomy College of Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Jianbo Liu
- Agronomy College of Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Dongqing Yang
- Agronomy College of Shandong Agricultural University, Tai'an, 271018, Shandong, China.
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19
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Tarchoun N, Saadaoui W, Hamdi K, Falleh H, Pavli O, Ksouri R, Petropoulos SA. Seed Priming and Biopriming in Two Squash Landraces ( Cucurbita maxima Duchesne) from Tunisia: A Sustainable Strategy to Promote Germination and Alleviate Salt Stress. PLANTS (BASEL, SWITZERLAND) 2024; 13:2464. [PMID: 39273948 PMCID: PMC11397125 DOI: 10.3390/plants13172464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2024] [Revised: 08/21/2024] [Accepted: 08/30/2024] [Indexed: 09/15/2024]
Abstract
In recent years, seed priming has gained interest, with researchers aiming to enhance seed germination and early growth, especially under abiotic stress conditions. In this study, seeds from two squash landraces (Cucurbita maxima Duchesne; i.e., Galaoui large seeds (Galaoui hereafter) and Batati green (Batati hereafter)) were subjected to different priming methods ((a) 0.3% and 0.4% KNO3 (halopriming); (b) 0.1% and 0.2% GA3 (hormopriming); (c) inoculation with Trichoderma spp. (T. harzianum, T. viride, and T. virens), Bacillus subtilis, and Pseudomonas fluorescens (biopriming) in order to promote germination parameters and seedling growth under salinity stress (0, 100, and 200 mM of NaCl). Our findings indicate the better performance of primed seeds compared to the untreated ones in terms of germination and seedling growth traits, although a varied response depending on the priming method and the landrace was observed. The highest germination percentage (GP) and the lowest mean germination time (MGT) were observed in 0.4% KNO3-primed seeds. The positive effects of 0.4% KNO3 were also depicted in all traits related to seedling growth and the seedling vigor index (SVI), indicating its effectiveness as a priming agent in squash seeds. Under salinity stress conditions, priming with 0.4% KNO3 significantly improved the germination and seedling growth traits for both landraces, while the application of 0.2% GA3 at high salinity significantly improved photosynthetic quantum yield (Fv/Fm ratio). Regarding the effects of biopriming in germination and seedling growth traits, our results indicate that T. harzianum and B. subtilis were the most effective bioagents in promoting germination and seedling growth in Galaoui and Batati seeds, respectively. In conclusion, our findings provide important information regarding the practice of using priming and biopriming agents to enhance the germination and seedling growth capacity of squash seeds, as well to mitigate the negative effects of salinity stress at the critical stages of germination and early growth.
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Affiliation(s)
- Néji Tarchoun
- Research Laboratory LR21AGR05, High Agronomic Institute of Chott Mariem, Sousse University, Sousse 4042, Tunisia
| | - Wassim Saadaoui
- Research Laboratory LR21AGR05, High Agronomic Institute of Chott Mariem, Sousse University, Sousse 4042, Tunisia
| | - Khawla Hamdi
- Research Laboratory LR21AGR05, High Agronomic Institute of Chott Mariem, Sousse University, Sousse 4042, Tunisia
| | - Hanen Falleh
- Laboratory of Aromatic and Medicinal Plants, Center of Biotechnology, Technopark of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia
| | - Ourania Pavli
- Laboratory of Genetics and Plant Breeding, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece
| | - Riadh Ksouri
- Laboratory of Aromatic and Medicinal Plants, Center of Biotechnology, Technopark of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia
| | - Spyridon A Petropoulos
- Laboratory of Vegetable Production, Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, Fytokou Street, 38446 Volos, Greece
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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 PMCID: PMC11423135 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 supérieurePSL University, Sorbonne UniversitéCNRSParis75005France
- Sony Computer Science LaboratoriesParis75005France
| | - Ian Coghill
- PASTEUR, Département de chimie, École normale supérieurePSL University, Sorbonne UniversitéCNRSParis75005France
| | - Mhairi L. H. Davidson
- Institut de biologie de l'École normale supérieure (IBENS), École normale supérieureCNRS, INSERM, Université PSLParis75005France
| | - Romain Billon
- Jardin des Plantes de ParisMuseum National d'Histoire NaturelleParis75005France
| | - Fredy Barneche
- Institut de biologie de l'École normale supérieure (IBENS), École normale supérieureCNRS, INSERM, Université PSLParis75005France
| | - Dusan Lazar
- Department of Biophysics, Faculty of SciencePalacký UniversityOlomouc77900Czech Republic
| | - Thomas Le Saux
- PASTEUR, Département de chimie, École normale supérieurePSL University, Sorbonne UniversitéCNRSParis75005France
| | - Ludovic Jullien
- PASTEUR, Département de chimie, École normale supérieurePSL University, Sorbonne UniversitéCNRSParis75005France
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Shen X, Sun M, Nie B, Li X. Physiological adaptation of Cyperus esculentus L. seedlings to varying concentrations of saline-alkaline stress: Insights from photosynthetic performance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108911. [PMID: 38976943 DOI: 10.1016/j.plaphy.2024.108911] [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: 04/23/2024] [Revised: 06/30/2024] [Accepted: 07/03/2024] [Indexed: 07/10/2024]
Abstract
Soil salinization effects plant photosynthesis in a number of global ecosystems. In this study, photosynthetic and physiological parameters were used to elucidate the impacts of saline-alkaline stress on Cyperus esculentus L. (C. esculentus) seedling photosynthesis. The results demonstrate that salt stress, alkali stress and mixed salt and alkali stress treatments all have similar bell-shaped influences on photosynthesis. At low concentrations (0-100 mmol L-1), saline-alkaline stress promoted net photosynthetic rate, transpiration rate and water use efficiency in C. esculentus. However, as the treatments increased in intensity (100-200 mmol L-1), plant photosynthetic parameters began to decline. We interpreted this as the capacity of C. esculentus to improve osmoregulatory capacity in low saline-alkaline stress treatments by accumulating photosynthetic pigment, proline and malondialdehyde to counterbalance the induced stress - an adaptive mechanism that failed once concentrations reached a critical threshold (100 mmol L-1). Stomatal conductance, maximum photosynthetic rate and actual photosynthetic rate all decreased with increasing concentration of the stress treatments, and intercellular carbon dioxide showed a decreasing and then increasing trend. These results indicated that when the saline-alkaline stress concentrations were low, C. esculentus seedlings showed obvious adaptive ability, but when the concentration increased further, the physiological processes of C. esculentus seedlings were significantly affected, with an obvious decrease in photosynthetic efficiency. This study provides a new understanding of the photosynthetic adaptation strategies of C. esculentus seedlings to varying concentrations of saline-alkaline stress.
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Affiliation(s)
- Xin Shen
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 83001, China; Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, Xinjiang, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mengxin Sun
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 83001, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bixia Nie
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 83001, China; Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, Xinjiang, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangyi Li
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 83001, China; Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, 848300, Xinjiang, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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22
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Gholizadeh F, Prerostová S, Pál M, Benczúr K, Hamow KÁ, Majláth I, Kun J, Gyenesei A, Urbán P, Szalai G, Vanková R, Janda T. Elucidating light and temperature-dependent signalling pathways from shoot to root in rice plants: Implications for stress responses. PHYSIOLOGIA PLANTARUM 2024; 176:e14541. [PMID: 39293994 DOI: 10.1111/ppl.14541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Accepted: 09/02/2024] [Indexed: 09/20/2024]
Abstract
The main aim of this work was to better understand how the low temperature signal from the leaves may affect the stress responses in the roots, and how the light conditions modify certain stress acclimation processes in rice plants. Rice plants grown at 27°C were exposed to low temperatures (12°C) with different light intensities, and in the case of some groups of plants, only the leaves received the cold, while the roots remained at control temperature. RNA sequencing focusing on the roots of plants grown under normal growth light conditions found 525 differentially expressed genes in different comparisons. Exposure to low temperature led to more down-regulated than up-regulated genes. Comparison between roots of the leaf-stressed plants and whole cold-treated or control plants revealed that nitrogen metabolism and nitric oxide-related signalling, as well as the phenylpropanoid-related processes, were specifically affected. Real-time PCR results focusing on the COLD1 and polyamine oxidase genes, as well as metabolomics targeting hormonal changes and phenolic compounds also showed that not only cold exposure of the leaves, either alone or together with the roots, but also the light conditions may influence certain stress responses in the roots of rice plants.
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Affiliation(s)
- Fatemeh Gholizadeh
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - Sylva Prerostová
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czech Republic
| | - Magda Pál
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - Kinga Benczúr
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - Kamirán Á Hamow
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - Imre Majláth
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - József Kun
- Hungarian Centre for Genomics and Bioinformatics, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
- Department of Pharmacology and Pharmacotherapy, University of Pécs Medical School, Pécs, Hungary
| | - Attila Gyenesei
- Hungarian Centre for Genomics and Bioinformatics, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Péter Urbán
- Hungarian Centre for Genomics and Bioinformatics, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Gabriella Szalai
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
| | - Radomíra Vanková
- Institute of Experimental Botany, Czech Academy of Sciences, Prague, Czech Republic
| | - Tibor Janda
- HUN-REN Centre for Agricultural Research, Agricultural Institute, Department of Plant Physiology and Metabolomics, Martonvásár
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23
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Haida M, Khalloufi FE, Essadki Y, Alexandrino DAM, Mugani R, Hejjaj A, Campos A, Vasconcelos V, Carvalho MF, Díez-Quijada L, Cameán AM, Oudra B. Microcystin-degrading bacteria reduce bioaccumulation in Fragaria vulgaris and enhance fruit yield and quality. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:54502-54524. [PMID: 39196325 DOI: 10.1007/s11356-024-34568-0] [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: 01/22/2024] [Accepted: 07/24/2024] [Indexed: 08/29/2024]
Abstract
In Morocco, red fruit production has thrived, primarily utilizing hydroponic methods to control crops, increase fruit yield and quality, and avoid soil-related problems. However, the irrigation of these expansive hydroponic farms relies heavily on water sourced from dams, many of which are contaminated with Microcystins (MCs). To address this contamination issue, ongoing research is focused on discovering effective and cost-efficient biological solutions for eliminating MCs. In this study, we isolate and identify bacterial strains capable of degrading MCs, evaluate the rate of degradation, and investigate how soil inoculated with these bacteria affects the accumulation of MCs in plant tissue. The partial 16S rRNA analyses of three bacterial sequences were conducted, identifying them through NCBI as follows: Ensifer sp. (B1) isolated from soil, Shinella sp. (B2) from a cyanobacterial bloom, and Stutzerimonas sp. (B3) from water. These bacteria exhibited the ability to degrade MCs, with approximately 34.75%, 73.75%, and 30.1% of the initial concentration (20 µg/L) being removed after a 6-day period for B1, B2, and B3, respectively. Moreover, strawberry plants were cultivated hydroponically in a greenhouse for a duration of 90 days. These plants were subjected to extracts of cyanobacteria containing 10 and 20 µg/L of Microcystins (MC), as well as water from an artificial lake contaminated with MC, both with and without the presence of isolated bacterial strains. Among these strains, Shinella sp. exhibited the highest efficacy in mitigating MC accumulation. Specifically, it resulted in a reduction of approximately 1.159 µg of MC per kilogram of root dry weight, leading to complete elimination in the leaves and fruits. The findings also indicated that the inoculation of perlite with the three MC-degrading bacterial strains significantly enhanced growth, photosynthetic pigments, yield, biochemical constituents, and quality attributes of strawberries (p ≤ 0.05). These promising outcomes suggest the potential of this approach for addressing the adverse impacts of crops irrigated with MC-contaminated water in future agricultural practices.
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Affiliation(s)
- Mohammed Haida
- Water, Biodiversity and Climate Change Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
| | - Fatima El Khalloufi
- Natural Resources Engineering and Environmental Impacts Team, Multidisciplinary Research and Innovation Laboratory, Polydisciplinary Faculty of Khouribga, Sultan Moulay Slimane University of Beni Mellal, B.P: 145, 25000, Khouribga, Morocco
| | - Yasser Essadki
- Water, Biodiversity and Climate Change Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
| | - Diogo A M Alexandrino
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Porto, Portugal
- Department of Environmental Health, School of Health, P. Porto, Porto, Portugal
| | - Richard Mugani
- Water, Biodiversity and Climate Change Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
- National Center for Studies and Research On Water and Energy, Cadi Ayyad University, P.O Box: 511, 40000, Marrakech, Morocco
| | - Abdessamad Hejjaj
- National Center for Studies and Research On Water and Energy, Cadi Ayyad University, P.O Box: 511, 40000, Marrakech, Morocco
| | - Alexandre Campos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Porto, Portugal
| | - Vitor Vasconcelos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Porto, Portugal.
- Department of Environmental Health, School of Health, P. Porto, Porto, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, 4169-007, Porto, Portugal.
| | - Maria F Carvalho
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/N, 4450-208, Porto, Portugal
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Leticia Díez-Quijada
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor Gacia Gonzalez 2, 41012, Seville, Spain
| | - Ana M Cameán
- Area of Toxicology, Faculty of Pharmacy, University of Sevilla, C/Profesor Gacia Gonzalez 2, 41012, Seville, Spain
| | - Brahim Oudra
- Water, Biodiversity and Climate Change Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakesh, Morocco
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24
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Zeng H, Yi K, Yang S, Jiang Y, Mao P, Yu Y, Feng Y, Dong Y, Dou L, Li M. Photosynthetic performance of glumes of oat spikelets is more stable for grain-filling stage under drought stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108890. [PMID: 38950462 DOI: 10.1016/j.plaphy.2024.108890] [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: 02/28/2024] [Revised: 06/12/2024] [Accepted: 06/26/2024] [Indexed: 07/03/2024]
Abstract
Drought stress affects plant photosynthesis, leading to a reduction in the quality and yield of crop production. Non-foliar organs play a complementary role in photosynthesis during plant growth and development and are important sources of energy. However, there are limited studies on the performance of non-foliar organs under drought stress. The photosynthetic-responsive differences of oat spikelet organs (glumes, lemmas and paleas) and flag leaves to drought stress during the grain-filling stage were examined. Under drought stress, photosynthetic performance of glume is more stable. Intercellular CO2 concentration (Ci), chlorophyll b, maximum photochemical efficiency of photosystem II. (Fv/Fm), and electron transport rate (ETR) were significantly higher in the glume compared to the flag leaf. The transcriptome data revealed that stable expression of the RCCR gene under drought stress was the main reason for maintaining higher chlorophyll content in the glume. Additionally, no differential expression genes (DEGs) related to Photosystem Ⅰ (PSI) reaction centers were found, and drought stress primarily affects the Photosystem II (PSII) reaction center. In spikelets, the CP43 and CP47 subunits of PSII and the AtpB subunit of ATP synthase were increased on the thylakoid membrane, contributing to photosynthetic stabilisation of spikelets as a means of supplementing the limited photosynthesis of the leaves under drought stress. The results enhanced understanding of the photosynthetic performance of oat spikelet during the grain-filling stage, and also provided an important basis on improving the photosynthetic capacity of non-foliar organs for the selection and breeding new oat varieties with high yield and better drought resistance.
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Affiliation(s)
- Hanguo Zeng
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Kun Yi
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Shuangfeng Yang
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Yiwei Jiang
- Department of Agronomy, Purdue University, West Lafayette, IN, 47907, USA
| | - Peisheng Mao
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Yang Yu
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Yuan Feng
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Yongxiang Dong
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Liru Dou
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China
| | - Manli Li
- Forage Seed Laboratory, College of Grassland Science and Technology, China Agricultural University, Beijing, 1000101, China.
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25
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Yuan X, Li J, Zhang X, Ai X, Bi H. Auxin as a downstream signal positively participates in melatonin-mediated chilling tolerance of cucumber. PHYSIOLOGIA PLANTARUM 2024; 176:e14526. [PMID: 39318034 DOI: 10.1111/ppl.14526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 08/19/2024] [Indexed: 09/26/2024]
Abstract
Here, we elucidate the interaction between IAA and melatonin (MT) in response to chilling in cucumber. The results showed that chilling stress induced the increase of endogenous MT and IAA, and the application of MT promoted the synthesis of IAA, while IAA could not affect endogenous MT content under chilling stress. Moreover, MT and IAA application both remarkably increased the chilling tolerance of cucumber seedlings in terms of lower contents of MDA and ROS, higher mRNA abundance of cold response genes, net photosynthetic rate (Pn), maximum regeneration rate of ribulose-1,5-diphosphate (Jmax), Rubisco maximum carboxylation efficiency (Vcmax), the activities and gene expression of RCA and Rubisco, as well as the content of active P700 (I/I0) and photosynthetic electron transport, compared with the plants in H2O treatment. Further analysis revealed that the inhibition of IAA transportation significantly reduced the chilling tolerance induced by MT, whereas the inhibition of endogenous MT did not affect the chilling tolerance induced by IAA. Meanwhile, we found that overexpression of the MT biosynthesis gene CsASMT increased the chilling tolerance, which was blocked by inhibition of endogenous IAA, and the silence of IAA biosynthesis gene CsYUCCA10 decreased the chilling tolerance of cucumber, which could not be alleviated by MT. These data implied IAA acted as a downstream signal to participate in the MT-induced chilling tolerance of cucumber seedlings. The study has implications for the production of greenhouse cucumber in winter seasons.
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Affiliation(s)
- Xinru Yuan
- Key laboratory of crop biology and genetic improvement of horticultural crops in Huanghuai region/College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, P.R. China
| | - Junqi Li
- Key laboratory of crop biology and genetic improvement of horticultural crops in Huanghuai region/College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, P.R. China
| | - Xiaowei Zhang
- Key laboratory of crop biology and genetic improvement of horticultural crops in Huanghuai region/College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, P.R. China
| | - Xizhen Ai
- Key laboratory of crop biology and genetic improvement of horticultural crops in Huanghuai region/College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, P.R. China
| | - Huangai Bi
- Key laboratory of crop biology and genetic improvement of horticultural crops in Huanghuai region/College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, P.R. China
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26
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Viotti C, Bertheau C, Martz F, Yung L, Placet V, Ferrarini A, Fornassier F, Blaudez D, Puschenreiter M, Chalot M. Digestate Improves Stinging Nettle ( Urtica dioica) Growth and Fiber Production at a Chlor-Alkali Site. PLANTS (BASEL, SWITZERLAND) 2024; 13:2425. [PMID: 39273909 PMCID: PMC11397052 DOI: 10.3390/plants13172425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 08/19/2024] [Accepted: 08/23/2024] [Indexed: 09/15/2024]
Abstract
Marginal lands have been proposed to produce non-food crop biomass for energy or green materials. For this purpose, the selection, implementation, and growth optimization of plant species on such lands are key elements to investigate to achieve relevant plant yields. Stinging nettle (Urtica dioica) is a herbaceous perennial that grows spontaneously on contaminated lands and was described as suitable to produce fibers for material applications. Two mercury-contaminated soils from industrial wastelands with different properties (grassland soil and sediment landfill) were used in this study to assess the potential growth of stinging nettle in a greenhouse mesocosm experiment. Two organic amendments were studied for their impact on nettle growth. The solid digestate from organic food wastes significantly doubled plant biomass whereas the compost from green wastes had a lower impact. The highest doses of organic amendments significantly increased the number of fibers, which doubled following digestate application, while reducing leaf Hg concentration. Both amendments significantly improved soil respiration and enzymatic activities linked to the microbial biomass in the soil from the sediment landfill by the end of the experiment. In the context of a phytomanagement scenario, solid digestate would be a preferred amendment resource to improve nettle production on industrial wastelands.
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Affiliation(s)
- Chloé Viotti
- Université de Franche-Comté, CNRS, Chrono-Environnement, F-25200 Montbéliard, France
| | - Coralie Bertheau
- Université de Franche-Comté, CNRS, Chrono-Environnement, F-25200 Montbéliard, France
| | - Françoise Martz
- Production System Unit, Natural Resources Institute Finland (Luke), Ounasjoentie 6, 96200 Rovaniemi, Finland
| | - Loïc Yung
- Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France
| | - Vincent Placet
- Université de Franche-Comté, FEMTO-ST Institute, Department of Applied Mechanics, F-25000 Besançon, France
| | - Andrea Ferrarini
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy
| | - Flavio Fornassier
- CREA-Centro Viticoltura ed Enologia, Via Trieste 23, 34170 Gorizia, Italy
| | - Damien Blaudez
- Université de Lorraine, CNRS, LIEC, F-54000 Nancy, France
| | - Markus Puschenreiter
- Institute of Soil Research, University of Natural Resources and Life Sciences, 1180 Vienna, Austria
| | - Michel Chalot
- Université de Franche-Comté, CNRS, Chrono-Environnement, F-25200 Montbéliard, France
- Université de Lorraine, Faculté des Sciences et Technologies, F-54000 Nancy, France
- UMR 6249 Laboratoire Chrono-Environnement, Pôle Universitaire du Pays de Montbéliard, 4 Place Tharradin, F-25200 Montbéliard, France
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Deng R, Li Y, Feng NJ, Zheng DF, Du YW, Khan A, Xue YB, Zhang JQ, Feng YN. Integrative Analyses Reveal the Physiological and Molecular Role of Prohexadione Calcium in Regulating Salt Tolerance in Rice. Int J Mol Sci 2024; 25:9124. [PMID: 39201810 PMCID: PMC11354818 DOI: 10.3390/ijms25169124] [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: 06/07/2024] [Revised: 08/15/2024] [Accepted: 08/16/2024] [Indexed: 09/03/2024] Open
Abstract
Salinity stress severely restricts rice growth. Prohexadione calcium (Pro-Ca) modulation can effectively alleviate salt stress in rice. In this study, we explored the effects of Pro-Ca on enhancing salt tolerance in two rice varieties, IR29 and HD96-1. The results revealed that Pro-Ca markedly enhanced root and shoot morphological traits and improved plant biomass under salt stress. Chlorophyll a and b content were significantly increased, which improved photosynthetic capacity. Transcriptomic and metabolomic data showed that Pro-Ca significantly up-regulated the expression of genes involved in E3 ubiquitin ligases in IR29 and HD96-1 by 2.5-fold and 3-fold, respectively, thereby maintaining Na+ and K+ homeostasis by reducing Na+. Moreover, Pro-Ca treatment significantly down-regulated the expression of Lhcb1, Lhcb2, Lhcb3, Lhcb5, and Lhcb6 in IR29 under salt stress, which led to an increase in photosynthetic efficiency. Furthermore, salt stress + Pro-Ca significantly increased the A-AAR of IR29 and HD96-1 by 2.9-fold and 2.5-fold, respectively, and inhibited endogenous cytokinin synthesis and signal transduction, which promoted root growth. The current findings suggested that Pro-Ca effectively alleviated the harmful effects of salt stress on rice by maintaining abscisic acid content and by promoting oxylipin synthesis. This study provides a molecular basis for Pro-Ca to alleviate salt stress in rice.
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Affiliation(s)
- Rui Deng
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Yao Li
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Nai-Jie Feng
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
- Shenzhen Research Institute, Guangdong Ocean University, Shenzhen 518108, China
| | - Dian-Feng Zheng
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
- Shenzhen Research Institute, Guangdong Ocean University, Shenzhen 518108, China
| | - You-Wei Du
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Aaqil Khan
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Ying-Bin Xue
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Jian-Qin Zhang
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
| | - Ya-Nan Feng
- College of Coastal Agriculture Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.D.); (Y.L.)
- South China Center of National Saline—Tolerant Rice Technology Innovation Center, Zhanjiang 524088, China
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You HJ, Jo H, Kim JM, Kang ST, Luong NH, Kim YH, Lee S. Exploration and genetic analyses of canopy leaf pigmentation changes in soybean (Glycine max L.): unveiling a novel phenotype. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:202. [PMID: 39134894 PMCID: PMC11319514 DOI: 10.1007/s00122-024-04693-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Accepted: 07/04/2024] [Indexed: 08/15/2024]
Abstract
KEY MESSAGE Pigmentation changes in canopy leaves were first reported, and subsequent genetic analyses identified a major QTL associated with levels of pigmentation changes, suggesting Glyma.06G202300 as a candidate gene. An unexpected reddish-purple pigmentation in upper canopy leaves was discovered during the late reproductive stages in soybean (Glycine max L.) genotypes. Two sensitive genotypes, 'Uram' and PI 96983, exhibited anomalous canopy leaf pigmentation changes (CLPC), while 'Daepung' did not. The objectives of this study were to: (i) characterize the physiological features of pigmented canopy leaves compared with non-pigmented leaves, (ii) evaluate phenotypic variation in a combined recombinant inbred line (RIL) population (N = 169 RILs) under field conditions, and (iii) genetically identify quantitative trait loci (QTL) for CLPC via joint population linkage analysis. Comparison between pigmented and normal leaves revealed different Fv/Fm of photosystem II, hyperspectral reflectance, and cellular properties, suggesting the pigmentation changes occur in response to an undefined abiotic stress. A highly significant QTL was identified on chromosome 6, explaining ~ 62.8% of phenotypic variance. Based on the QTL result, Glyma.06G202300 encoding flavonoid 3'-hydroxylase (F3'H) was identified as a candidate gene. In both Uram and PI 96983, a 1-bp deletion was confirmed in the third exon of Glyma.06G202300 that results in a premature stop codon in both Uram and PI 96983 and a truncated F3'H protein lacking important domains. Additionally, gene expression analyses uncovered significant differences between pigmented and non-pigmented leaves. This is the first report of a novel symptom and an associated major QTL. These results will provide soybean geneticists and breeders with valuable knowledge regarding physiological changes that may affect soybean production. Further studies are required to elucidate the causal environmental stress and the underlying molecular mechanisms.
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Affiliation(s)
- Hee Jin You
- Department of Crop Science, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, 34134, South Korea
| | - Hyun Jo
- Department of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, 41566, South Korea
| | - Ji-Min Kim
- Department of Crop Science and Biotechnology, College of Bioresource Science, Dankook University, Cheonan, Chungnam, 31116, South Korea
| | - Sung-Taeg Kang
- Department of Crop Science and Biotechnology, College of Bioresource Science, Dankook University, Cheonan, Chungnam, 31116, South Korea
| | - Ngoc Ha Luong
- Department of Crop Science, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, 34134, South Korea
| | - Yeong-Ho Kim
- Department of Crop Science, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, 34134, South Korea
| | - Sungwoo Lee
- Department of Crop Science, College of Agriculture and Life Sciences, Chungnam National University, Daejeon, 34134, South Korea.
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Peter EK, Jaeger C, Lisec J, Peters RS, Mourot R, Rossel PE, Tranter M, Anesio AM, Benning LG. Endometabolic profiling of pigmented glacier ice algae: the impact of sample processing. Metabolomics 2024; 20:98. [PMID: 39123092 PMCID: PMC11315761 DOI: 10.1007/s11306-024-02147-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 06/24/2024] [Indexed: 08/12/2024]
Abstract
INTRODUCTION Glacier ice algae, mainly Ancylonema alaskanum and Ancylonema nordenskiöldi, bloom on Greenland Ice Sheet bare ice surfaces. They significantly decrease surface albedo due to their purple-brown pigmentation, thus increasing melt. Little is known about their metabolic adaptation and factors controlling algal growth dynamics and pigment formation. A challenge in obtaining such data is the necessity of melting samples, which delays preservation and introduces bias to metabolomic analysis. There is a need to evaluate the physiological response of algae to melting and establish consistent sample processing strategies for metabolomics of ice microbial communities. OBJECTIVES To address the impact of sample melting procedure on metabolic characterization and establish a processing and analytical workflow for endometabolic profiling of glacier ice algae. METHODS We employed untargeted, high-resolution mass spectrometry and tested the effect of sample melt temperature (10, 15, 20 °C) and processing delay (up to 49 h) on the metabolome and lipidome, and complemented this approach with cell counts (FlowCam), photophysiological analysis (PAM) and diversity characterization. RESULTS AND CONCLUSION We putatively identified 804 metabolites, with glycerolipids, glycerophospholipids and fatty acyls being the most prominent superclasses (> 50% of identified metabolites). Among the polar metabolome, carbohydrates and amino acid-derivatives were the most abundant. We show that 8% of the metabolome is affected by melt duration, with a pronounced decrease in betaine membrane lipids and pigment precursors, and an increase in phospholipids. Controlled fast melting at 10 °C resulted in the highest consistency, and is our recommendation for future supraglacial metabolomics studies.
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Affiliation(s)
- Elisa K Peter
- German Research Centre for Geosciences - GFZ, 14473, Potsdam, Germany.
- Department of Earth Sciences, Freie Universität Berlin, 12249, Berlin, Germany.
| | - Carsten Jaeger
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12489, Berlin, Germany
| | - Jan Lisec
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12489, Berlin, Germany
| | - R Sven Peters
- German Research Centre for Geosciences - GFZ, 14473, Potsdam, Germany
| | - Rey Mourot
- German Research Centre for Geosciences - GFZ, 14473, Potsdam, Germany
- Department of Earth Sciences, Freie Universität Berlin, 12249, Berlin, Germany
| | - Pamela E Rossel
- German Research Centre for Geosciences - GFZ, 14473, Potsdam, Germany
| | - Martyn Tranter
- Department of Environmental Science, Aarhus University, 4000, Roskilde, Denmark
| | - Alexandre M Anesio
- Department of Environmental Science, Aarhus University, 4000, Roskilde, Denmark
| | - Liane G Benning
- German Research Centre for Geosciences - GFZ, 14473, Potsdam, Germany.
- Department of Earth Sciences, Freie Universität Berlin, 12249, Berlin, Germany.
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Murazzi ME, Pradel A, Schefer RB, Gessler A, Mitrano DM. Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies. ENVIRONMENTAL SCIENCE. NANO 2024; 11:3574-3584. [PMID: 39131542 PMCID: PMC11309015 DOI: 10.1039/d4en00286e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 06/18/2024] [Indexed: 08/13/2024]
Abstract
Anthropogenic contaminants can place significant stress on vegetation, especially when they are taken up into plants. Plastic pollution, including nanoplastics (NPs), could be detrimental to tree functioning, by causing, for example, oxidative stress or reducing photosynthesis. While a number of studies have explored the capacity of plants to take up NPs, few have simultaneously assessed the functional damage due to particulate matter uptake. To quantify NPs uptake by tree roots and to determine whether this resulted in subsequent physiological damage, we exposed the roots of two tree species with different water use strategies in hydroponic cultures to two concentrations (10 mg L-1 and 30 mg L-1) of model metal-doped polystyrene NPs. This approach allowed us to accurately quantify low concentrations of NPs in tissues using standard approaches for metal analysis. The two contrasting tree species included Norway spruce (Picea abies [L.] Karst), a water conservative tree, and wild service tree (Sorbus torminalis [L.] Crantz), an early successional tree with a rather water spending strategy. At both exposure concentrations and at each of the experimental time points (two and four weeks), NPs were highly associated and/or concentrated inside the tree roots. In both species, maximum concentrations were observed after 2 weeks in the roots of the high concentration (HC) treatment (spruce: 2512 ± 304 μg NPs per g DW (dry weight), wild service tree: 1190 ± 823 μg NPs per g DW). In the aboveground organs (stems and leaves or needles), concentrations were one to two orders of magnitude lower than in the roots. Despite relatively similar NPs concentrations in the tree aboveground organs across treatments, there were different temporal impacts on tree physiology of the given species. Photosynthetic efficiency was reduced faster (after 2 weeks of NPs exposure) and more intensively (by 28% in the HC treatment) in wild service trees compared to Norway spruce (ca. 10% reduction only after 4 weeks). Our study shows that both, evergreen coniferous as well as deciduous broadleaf tree species are negatively affected in their photosynthesis by NPs uptake and transport to aboveground organs. Given the likelihood of trees facing multiple, concurrent stressors from anthropogenic pollution and climate change, including the impact of NPs, it is crucial to consider the cumulative effects on vegetation in future.
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Affiliation(s)
- Maria Elvira Murazzi
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research Zürcherstrasse 111 8903 Birmensdorf Switzerland
- Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland
| | - Alice Pradel
- Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland
| | - Roman B Schefer
- Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland
| | - Arthur Gessler
- WSL Swiss Federal Institute for Forest, Snow and Landscape Research Zürcherstrasse 111 8903 Birmensdorf Switzerland
- Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland
| | - Denise M Mitrano
- Department of Environmental Systems Science, ETH Zurich Universitätstrasse 16 8092 Zurich Switzerland
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Poding LH, Jägers P, Herlitze S, Huhn M. Diversity and function of fluorescent molecules in marine animals. Biol Rev Camb Philos Soc 2024; 99:1391-1410. [PMID: 38468189 DOI: 10.1111/brv.13072] [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: 08/07/2023] [Revised: 02/24/2024] [Accepted: 02/29/2024] [Indexed: 03/13/2024]
Abstract
Fluorescence in marine animals has mainly been studied in Cnidaria but is found in many different phyla such as Annelida, Crustacea, Mollusca, and Chordata. While many fluorescent proteins and molecules have been identified, very little information is available about the biological functions of fluorescence. In this review, we focus on describing the occurrence of fluorescence in marine animals and the behavioural and physiological functions of fluorescent molecules based on experimental approaches. These biological functions of fluorescence range from prey and symbiont attraction, photoprotection, photoenhancement, stress mitigation, mimicry, and aposematism to inter- and intraspecific communication. We provide a comprehensive list of marine taxa that utilise fluorescence, including demonstrated effects on behavioural or physiological responses. We describe the numerous known functions of fluorescence in anthozoans and their underlying molecular mechanisms. We also highlight that other marine taxa should be studied regarding the functions of fluorescence. We suggest that an increase in research effort in this field could contribute to understanding the capacity of marine animals to respond to negative effects of climate change, such as rising sea temperatures and increasing intensities of solar irradiation.
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Affiliation(s)
- Lars H Poding
- Department of General Zoology and Neurobiology, Institute of Biology and Biotechnology, Ruhr-University Bochum, Bochum, 44801, Germany
| | - Peter Jägers
- Department of General Zoology and Neurobiology, Institute of Biology and Biotechnology, Ruhr-University Bochum, Bochum, 44801, Germany
| | - Stefan Herlitze
- Department of General Zoology and Neurobiology, Institute of Biology and Biotechnology, Ruhr-University Bochum, Bochum, 44801, Germany
| | - Mareike Huhn
- Department of General Zoology and Neurobiology, Institute of Biology and Biotechnology, Ruhr-University Bochum, Bochum, 44801, Germany
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Wang J, Li X, Wang J, Wei W, Jin W, Zhou L. Comparative proteomics reveals energy and carbon metabolism changes in Scenedesmus quadricauda mutants induced by heavy-ion beam irradiation. BIORESOURCE TECHNOLOGY 2024; 406:130965. [PMID: 38876280 DOI: 10.1016/j.biortech.2024.130965] [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: 04/10/2024] [Revised: 06/02/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
Microalgae's superior ability to fix carbon dioxide into biomass and high-value bioproducts remains underutilized in biotechnological applications due to a lack of comprehensive understanding of their carbon metabolism and energy conversion. In this work, the strain improvement technique heavy-ion beams (HIB) mutagenesis was employed on the environmentally adaptable microalgae Scenedesmus quadricauda. After several rounds of screening, two contrasting mutants were identified. S-#4 showed low photosynthetic activity and biomass productivity, while S-#26 exhibited adaptability to prolonged high light stress, achieving a 28.34 % increase in biomass yield compared to the wild-type strain. Integrating their photosynthetic characteristics and comparative proteomic analysis revealed that the contrasting protein regulations from central carbon metabolism mainly affects the two mutants' opposite biomass accumulation. Therefore, the divergent regulation of the tricarboxylic acid cycle following HIB mutagenesis could be potential targets for engineering microalgae with superior biomass and high-value products.
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Affiliation(s)
- Jie Wang
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xin Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jufang Wang
- Gansu Key Laboratory of Space Radiobiology, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Wei Wei
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Wenjie Jin
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Libin Zhou
- Biophysics Group, Biomedical Center, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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Datta RR, Papry RI, Asakura Y, Kato Y, Hong WK, Mashio AS, Hasegawa H. Effect of salinity on arsenic uptake, biotransformation, and time-dependent speciation pattern by Sargassum species. CHEMOSPHERE 2024; 362:142712. [PMID: 38942244 DOI: 10.1016/j.chemosphere.2024.142712] [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: 10/03/2023] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024]
Abstract
The arsenic (As) content of seaweed has been extensively studied due to its toxicological concerns. As a primary producer, seaweed plays a vital role in the biochemical cycling of As in marine environments. Several studies have focused on the growth and behavior of seaweed under a salinity gradient; however, information related to the impact of salinity on As uptake, biotransformation mechanism, and time-dependent speciation patterns of these plants is limited. This study aimed to investigate the temporal effects of salinity on these factors in seaweed. Three seaweed species, Sargassum fusiforme, Sargassum thunbergii, and Sargassum horneri, were maintained in a 1% Provasoli-enriched seawater medium for 14 d under 5‰, 15‰, 25‰, and 34‰ salinities. The results revealed that the high salinity media promoted a rapid uptake of As by all three species. Arsenic accumulation inside the cell approached 100% within seven days of culture for S. thunbergii, irrespective of the salinity content of the media. In addition, As(V) biotransformation and release by S. fusiforme and S. thunbergii were time-dependent, while S. horneri released dimethylarsinic acid (DMAA) from day 3 of the culture. All seaweed species showed methylation of As(V) to DMAA during the culture period. Furthermore, S. thunbergii released DMAA when As(V) was completely depleted from the culture media, whereas the release by S. fusiforme and S. horneri was relatively earlier than that of S. thunbergii. S. horneri showed minimal tolerance to low salinity, as the cells revealed significant damage. Based on the results of this study, a conceptual model was developed that demonstrated the effects of salinity on As uptake and the biotransformation mechanism of seaweed.
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Affiliation(s)
- Rakhi Rani Datta
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
| | - Rimana Islam Papry
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan; Department of Environmental Science, College of Agricultural Sciences, IUBAT-International University of Business Agriculture and Technology, Sector 10, Uttara, Dhaka, 1230, Bangladesh
| | - Yusuke Asakura
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Yusuke Kato
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Wong Kuo Hong
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Asami Suzuki Mashio
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
| | - Hiroshi Hasegawa
- Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.
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Petri M, Cordon GB, Diz VE, González GA, Lagorio MG. Chlorophyll fluorescence in sentinel plants for the surveillance of chemical risk. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 257:112965. [PMID: 38955078 DOI: 10.1016/j.jphotobiol.2024.112965] [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: 05/05/2024] [Revised: 06/10/2024] [Accepted: 06/25/2024] [Indexed: 07/04/2024]
Abstract
This research aimed to develop natural plant systems to serve as biological sentinels for the detection of organophosphate pesticides in the environment. The working hypothesis was that the presence of the pesticide in the environment caused changes in the content of pigments and in the photosynthetic functioning of the plant, which could be evaluated non-destructively through the analysis of reflected light and emitted fluorescence. The objective of the research was to furnish in vivo indicators derived from spectroscopic parameters, serving as early alert signals for the presence of organophosphates in the environment. In this context, the effects of two pesticides, Chlorpyrifos and Dimethoate, on the spectroscopic properties of aquatic plants (Vallisneria nana and Spathyfillum wallisii) were studied. Chlorophyll-a variable fluorescence allowed monitoring both pesticides' presence before any damage was observed at the naked eye, with the analysis of the fast transient (OJIP curve) proving more responsive than Kautsky kinetics, steady-state fluorescence, or reflectance measurements. Pesticides produced a decrease in the maximum quantum yield of PSII photochemistry, in the proportion of PSII photochemical deexcitation relative to PSII non photochemical decay and in the probability that trapped excitons moved electrons into the photosynthetic transport chain beyond QA-. Additionally, an increase in the proportion of absorbed energy being dissipated as heat rather than being utilized in the photosynthetic process, was notorious. The pesticides induced a higher deactivation of chlorophyll excited states by photophysical pathways (including fluorescence) with a decrease in the quantum yields of photosystem II and heat dissipation by non-photochemical quenching. The investigated aquatic plants served as sentinels for the presence of pesticides in the environment, with the alert signal starting within the first milliseconds of electronic transport in the photosynthetic chain. Organophosphates damage animals' central nervous systems similarly to certain compounds found in chemical weapons, thus raising the possibility that sentinel plants could potentially signal the presence of such weapons.
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Affiliation(s)
- Mailén Petri
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Dpto. de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Pabellón II, 1er piso, C1428EHA Buenos Aires, Argentina
| | - Gabriela B Cordon
- Universidad de Buenos Aires, Facultad de Agronomía, Área de Educación Agropecuaria y Ambiental, Av. San Martín 4453, 1417 Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA), Facultad de Agronomía, Buenos Aires, Argentina
| | - Virginia E Diz
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Dpto. de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Pabellón II, 1er piso, C1428EHA Buenos Aires, Argentina
| | - Graciela A González
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Dpto. de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Pabellón II, 1er piso, C1428EHA Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
| | - M Gabriela Lagorio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Dpto. de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Pabellón II, 1er piso, C1428EHA Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina..
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Rosli R, Tennakoon KU, Metali F. Ecophysiological responses of native and introduced coastal tree species parasitized by Cassytha filiformis in Brunei. PLANT-ENVIRONMENT INTERACTIONS (HOBOKEN, N.J.) 2024; 5:e70000. [PMID: 39045287 PMCID: PMC11261464 DOI: 10.1002/pei3.70000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 06/28/2024] [Accepted: 07/02/2024] [Indexed: 07/25/2024]
Abstract
Hemiparasitic Cassytha filiformis commonly infects native host (Dillenia suffruticosa and Melastoma malabathricum) and introduced host (Acacia auriculiformis and Acacia mangium) species in threatened heath forests in Brunei. This study aims to investigate the impact of parasitism on the ecophysiology of these host species. This study addresses the research gap in understanding the ecophysiology of C. filiformis-host associations, particularly when native and introduced hosts were infected. We generated CO2 and light response curves to examine the effects of increasing CO2 and light levels of infected and uninfected hosts and examined gaseous exchange, mineral nutrients, and secondary bioactive compounds of host-parasite associations. Infected hosts were negatively impacted by C. filiformis as exhibited in the CO2 and light response curves, with C. filiformis-native host association performing better than introduced species. There were no significant differences in photosynthetic parameters between infected and uninfected hosts, except in D. suffruticosa. Certain nutrient contents showed significant differences, but total N, Ca, and K in uninfected hosts were similar to infected hosts. Total phenols and tannins were significantly higher in introduced hosts than native hosts. Our findings asserted that this hemiparasitic vine relies on both its photosynthetic efficiency and nutrient acquisition from its hosts. The parasitism did not significantly hinder the ecophysiological performance of infected hosts, suggesting a plausible co-existence between the hosts and C. filiformis. This study provides essential ecophysiological information for future research on how C. filiformis can establish itself without negatively impacting the co-habitating native hosts.
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Affiliation(s)
- Roshanizah Rosli
- Environmental and Life Sciences Programme, Faculty of ScienceUniversiti Brunei DarussalamGadongBrunei Darussalam
- Institute for Biodiversity and Environmental ResearchUniversiti Brunei DarussalamGadongBrunei Darussalam
| | - Kushan U. Tennakoon
- Institute of Innovation, Science and Sustainability, Future Regions Research CenterFederation University, Berwick CampusBerwickMelbourneAustralia
| | - Faizah Metali
- Environmental and Life Sciences Programme, Faculty of ScienceUniversiti Brunei DarussalamGadongBrunei Darussalam
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Hejduková E, Kollár J, Nedbalová L. Freezing stress tolerance of benthic freshwater diatoms from the genus Pinnularia: Comparison of strains from polar, alpine, and temperate habitats. JOURNAL OF PHYCOLOGY 2024. [PMID: 39073104 DOI: 10.1111/jpy.13486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 06/05/2024] [Accepted: 06/25/2024] [Indexed: 07/30/2024]
Abstract
Diatoms are among the most important primary producers in alpine and polar freshwaters. Although temperate diatoms are sensitive to freezing, polar diatoms often exhibit more resistance. This is particularly true for members of the (predominantly terrestrial) Pinnularia borealis species complex. However, it remains unclear to what extent this resistance applies to other representatives of the genus. Here, we compare the freezing-stress tolerance of 11 freshwater, benthic strains representing different species of Pinnularia (including Caloneis) from polar, alpine, and temperate habitats. As vegetative cells, strains were exposed to freezing temperatures of -4, -10, -20, -40, -80, and -196°C. Survival was assessed by light microscopy and photosynthetic measurements. We observed vegetative cells to be sensitive to low freezing temperatures; only "mild" freezing was survived by all tested strains, and most tested strains did not survive treatments ≤-10°C. However, individual strain sensitivities appeared related to their original habitats. For example, polar and alpine strains better withstood "mild" and "moderate" freezing (-4 and -10°C, respectively); although temperate strains were significantly affected by the "mild" freezing treatment, polar and alpine strains were not. The -10°C treatment was survived exclusively by polar strains, and only P. catenaborealis survived all treatments. Interestingly, this species exhibited the lowest survival in the -10°C treatment, potentially implying some metabolic activity even at freezing temperatures. Thus, despite more extensive sampling throughout the genus and finer temperature scaling compared to previous studies, the remarkable freezing-stress tolerance of the P. borealis species complex remains unique within the genus.
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Affiliation(s)
- Eva Hejduková
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
- Department of Phycology, Institute of Botany, Czech Academy of Sciences, Třeboň, Czech Republic
| | - Jan Kollár
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Linda Nedbalová
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
- Department of Phycology, Institute of Botany, Czech Academy of Sciences, Třeboň, Czech Republic
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Khapte PS, Changan SS, Kumar P, Singh TH, Singh AK, Rane J, Reddy KS. Deciphering desiccation tolerance in wild eggplant species: insights from chlorophyll fluorescence dynamics. BMC PLANT BIOLOGY 2024; 24:702. [PMID: 39054439 PMCID: PMC11270916 DOI: 10.1186/s12870-024-05430-9] [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: 05/14/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Climate change exacerbates abiotic stresses, which are expected to intensify their impact on crop plants. Drought, the most prevalent abiotic stress, significantly affects agricultural production worldwide. Improving eggplant varieties to withstand abiotic stress is vital due to rising drought from climate change. Despite the diversity of wild eggplant species that thrive under harsh conditions, the understanding of their drought tolerance mechanisms remains limited. In the present study, we used chlorophyll fluorescence (ChlaF) imaging, which reveals a plant's photosynthetic health, to investigate desiccation tolerance in eggplant and its wild relatives. Conventional fluorescence measurements lack spatial heterogeneity, whereas ChlaF imaging offers comprehensive insights into plant responses to environmental stresses. Hence, employing noninvasive imaging techniques is essential for understanding this heterogeneity. RESULTS Desiccation significantly reduced the leaf tissue moisture content (TMC) across species. ChlaF and TMC displayed greater photosystem II (PSII) efficiency after 54 h of desiccation in S. macrocarpum, S. torvum, and S. indicum, with S. macrocarpum demonstrating superior efficiency due to sustained fluorescence. PSII functions declined gradually in S. macrocarpum and S. torvum, unlike those in other species, which exhibited abrupt declines after 54 h of desiccation. However, after 54 h, PSII efficiency remained above 50% of its initial quantum yield in S. macrocarpum at 35% leaf RWC (relative water content), while S. torvum and S. indicum displayed 50% decreases at 31% and 33% RWC, respectively. Conversely, the susceptible species S. gilo and S. sisymbriifolium exhibited a 50% reduction in PSII function at an early stage of 50% RWC, whereas in S. melongena, this reduction occurred at 40% RWC. CONCLUSION Overall, our study revealed notably greater leaf desiccation tolerance, especially in S. macrocarpum, S. torvum, and S. indicum, attributed to sustained PSII efficiency at low TMC levels, indicating that these species are promising sources of drought tolerance.
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Affiliation(s)
- Pratapsingh S Khapte
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India.
| | - Sushil S Changan
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India
| | - Pradeep Kumar
- ICAR-Central Arid Zone Research Institute, Jodhpur, Rajasthan, 342003, India
| | - T H Singh
- ICAR-Indian Institute of Horticultural Research, Bengaluru, Karnataka, 560089, India
| | - Ajay Kumar Singh
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India
| | - Jagadish Rane
- ICAR-Central Institute for Arid Horticulture, Bikaner, Rajasthan, 334006, India
| | - K Sammi Reddy
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413115, India
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Van Beek JM, Zheng T, Wang Z, Kovach KR, Townsend PA. Evaluation of the Reliability of the CCM-300 Chlorophyll Content Meter in Measuring Chlorophyll Content for Various Plant Functional Types. SENSORS (BASEL, SWITZERLAND) 2024; 24:4784. [PMID: 39123831 PMCID: PMC11314797 DOI: 10.3390/s24154784] [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: 06/18/2024] [Revised: 07/13/2024] [Accepted: 07/16/2024] [Indexed: 08/12/2024]
Abstract
Chlorophyll fluorescence is a well-established method to estimate chlorophyll content in leaves. A popular fluorescence-based meter, the Opti-Sciences CCM-300 Chlorophyll Content Meter (CCM-300), utilizes the fluorescence ratio F735/F700 and equations derived from experiments using broadleaf species to provide a direct, rapid estimate of chlorophyll content used for many applications. We sought to quantify the performance of the CCM-300 relative to more intensive methods, both across plant functional types and years of use. We linked CCM-300 measurements of broadleaf, conifer, and graminoid samples in 2018 and 2019 to high-performance liquid chromatography (HPLC) and/or spectrophotometric (Spec) analysis of the same leaves. We observed a significant difference between the CCM-300 and HPLC/Spec, but not between HPLC and Spec. In comparison to HPLC, the CCM-300 performed better for broadleaves (r = 0.55, RMSE = 154.76) than conifers (r = 0.52, RMSE = 171.16) and graminoids (r = 0.32, RMSE = 127.12). We observed a slight deterioration in meter performance between years, potentially due to meter calibration. Our results show that the CCM-300 is reliable to demonstrate coarse variations in chlorophyll but may be limited for cross-plant functional type studies and comparisons across years.
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Affiliation(s)
- Joelie M. Van Beek
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA; (J.M.V.B.); (Z.W.); (K.R.K.); (P.A.T.)
| | - Ting Zheng
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA; (J.M.V.B.); (Z.W.); (K.R.K.); (P.A.T.)
| | - Zhihui Wang
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA; (J.M.V.B.); (Z.W.); (K.R.K.); (P.A.T.)
- Guangdong Provincial Key Laboratory of Remote Sensing and Geographical Information System, Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Kyle R. Kovach
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA; (J.M.V.B.); (Z.W.); (K.R.K.); (P.A.T.)
| | - Philip A. Townsend
- Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA; (J.M.V.B.); (Z.W.); (K.R.K.); (P.A.T.)
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Oishi Y. Additive positive effect of warming and elevated nitrogen deposition on Sphagnum biomass production at mid-latitudes. Sci Rep 2024; 14:16793. [PMID: 39039156 PMCID: PMC11263368 DOI: 10.1038/s41598-024-67614-5] [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: 02/26/2024] [Accepted: 07/12/2024] [Indexed: 07/24/2024] Open
Abstract
Global warming and increased atmospheric nitrogen (N) deposition can adversely impact Sphagnum moss populations and ecological functions in peatlands. Based on the anticipated increases in temperature and N levels at global scale, we investigated the effects of simultaneous warming and N treatment on growth and ecophysiological activity of Sphagnum papillosum, a predominant moss at mid-latitudes, utilizing a growth chamber experiment. Warming treatments increased the maximum yield of photosystem II (Fv/Fm) of S. papillosum while decreasing the stable carbon isotope ratio. However, warming treatment alone did not cause significant changes in the biomass increase from that of the control. Regarding N treatment, the low N treatment decreased Fv/Fm under the current temperature but did not affect the biomass increase. In contrast to these results, a simultaneous warming and high N treatment significantly enhanced the biomass production compared to that of the control, exhibiting additive effect of warming and high N treatment on Sphagnum biomass production. These responses were attributed to the improved photosynthetic performances by warming and N treatment. The results of this study contribute to the prediction of Sphagnum responses to warming and changes in N deposition.
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Affiliation(s)
- Yoshitaka Oishi
- Center for Arts and Sciences, Fukui Prefectural University, 4-1-1 Kenjojima, Matsuoka, Yoshida-gun, Eiheiji-cho, Fukui, 910-1195, Japan.
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Laccetti L, Salbitani G, Lumaga MRB, Bossa R, Cerasuolo P, Loreto F, Manna M, Carfagna S, Scopece G. How to survive on Mediterranean coastal cliffs: tolerance to seawater in early life-cycle stages in Brassica incana Ten. (Brassicaceae). PLANT BIOLOGY (STUTTGART, GERMANY) 2024. [PMID: 39012215 DOI: 10.1111/plb.13693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 06/24/2024] [Indexed: 07/17/2024]
Abstract
Mediterranean coastal cliffs are reservoirs of plant biodiversity, hosting vulnerable plant species particularly exposed to the risk of local extinction due to extreme abiotic conditions and climate changes. Therefore, studies aiming to understand the tolerance of cliff plant species to abiotic stresses are important to predict their long-time persistence or to highlight inherent threats. We used an integrative approach including anatomical, physiological and phenotypic analyses on (a) seeds, (b) cotyledons of seedlings; and (c) young plants to assess whether the cliff species Brassica incana, can tolerate exposure to different seawater (SW: 25%, 50% and 100%) concentrations during the early stages of its life cycle. Seeds could germinate when exposed to up to 50% SW. Seeds did not germinate in 100% SW, but could resume germination after washing with freshwater. Seed germination rate also decreased with increasing SW concentration. Exposure to SW decreased stomatal size and stomatal index of cotyledons and caused long-lasting and severe damage to the photochemical reactions of photosynthesis. Photochemistry was also sensitive to SW in young plants, but the effect was lower than in cotyledons. This may involve a remodulation of chloroplast dimensions and activation of cellular metabolism. However, photochemical reactions limited photosynthesis at100% SW even after recovery from SW exposure. Our data show that B. incana has strong tolerance to seawater and shows clear signs of halophytic adaptation. Whilst seeds and juvenile plants are able to withstand SW, the seedling stage appears to be more sensitive.
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Affiliation(s)
- L Laccetti
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - G Salbitani
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - M R B Lumaga
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - R Bossa
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - P Cerasuolo
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - F Loreto
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - M Manna
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - S Carfagna
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
| | - G Scopece
- Department of Biology, University Federico II of Naples, Complesso Universitario MSA, Naples, Italy
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41
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Deore P, Tsang Min Ching SJ, Nitschke MR, Rudd D, Brumley DR, Hinde E, Blackall LL, van Oppen MJH. Unique photosynthetic strategies employed by closely related Breviolum minutum strains under rapid short-term cumulative heat stress. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4005-4023. [PMID: 38636949 PMCID: PMC11233414 DOI: 10.1093/jxb/erae170] [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: 11/20/2023] [Accepted: 04/17/2024] [Indexed: 04/20/2024]
Abstract
The thermal tolerance of symbiodiniacean photo-endosymbionts largely underpins the thermal bleaching resilience of their cnidarian hosts such as corals and the coral model Exaiptasia diaphana. While variation in thermal tolerance between species is well documented, variation between conspecific strains is understudied. We compared the thermal tolerance of three closely related strains of Breviolum minutum represented by two internal transcribed spacer region 2 profiles (one strain B1-B1o-B1g-B1p and the other two strains B1-B1a-B1b-B1g) and differences in photochemical and non-photochemical quenching, de-epoxidation state of photopigments, and accumulation of reactive oxygen species under rapid short-term cumulative temperature stress (26-40 °C). We found that B. minutum strains employ distinct photoprotective strategies, resulting in different upper thermal tolerances. We provide evidence for previously unknown interdependencies between thermal tolerance traits and photoprotective mechanisms that include a delicate balancing of excitation energy and its dissipation through fast relaxing and state transition components of non-photochemical quenching. The more thermally tolerant B. minutum strain (B1-B1o-B1g-B1p) exhibited an enhanced de-epoxidation that is strongly linked to the thylakoid membrane melting point and possibly membrane rigidification minimizing oxidative damage. This study provides an in-depth understanding of photoprotective mechanisms underpinning thermal tolerance in closely related strains of B. minutum.
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Affiliation(s)
- Pranali Deore
- School of BioSciences, The University of Melbourne, Parkville 3010, Victoria, Australia
| | | | - Matthew R Nitschke
- Australian Institute of Marine Science, Townsville 4810, Queensland, Australia
- School of Biological Sciences, Victoria University of Wellington, Wellington 6102, New Zealand
| | - David Rudd
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
| | - Douglas R Brumley
- School of Mathematics and Statistics, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Elizabeth Hinde
- School of Physics, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Linda L Blackall
- School of BioSciences, The University of Melbourne, Parkville 3010, Victoria, Australia
| | - Madeleine J H van Oppen
- School of BioSciences, The University of Melbourne, Parkville 3010, Victoria, Australia
- Australian Institute of Marine Science, Townsville 4810, Queensland, Australia
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42
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Dos Santos WL, Medina-Ramos A, Greenwood J, Pôrto KC, Pinheiro F, Stark LR. Understanding desiccation tolerance and sex-specific responses in Bryum argenteum: insights from phenological phases and physiological analyses. ANNALS OF BOTANY 2024; 134:351-364. [PMID: 38702965 PMCID: PMC11232512 DOI: 10.1093/aob/mcae071] [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: 01/09/2024] [Accepted: 05/01/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUND AND AIMS Desiccation tolerance (DT) is crucial for survival in arid environments, where organisms develop strategies in reproduction, maintenance and defence to cope with water scarcity. Therefore, investigating the relationship between reproduction and DT is essential to understand the ecology and adaptive strategies of species. This study explores the connection between the development of male and female gametangia in the moss Bryum argenteum and the decrease in DT during the progression of phenological phases in gametangia and protonema. METHODS Samples collected from a dry tropical forest in Brazil were cultivated, cloned and subjected to desiccation. Subsequently, the physiological parameters of shoots and protonemata were analysed. Shoot and protonema regeneration were monitored for 28 d after the physiological analyses. Both phases were subjected to control and desiccation treatments. KEY RESULTS Significant effects of desiccation and sex on the physiological parameters and regeneration capacity of shoots and protonemata were found. Male shoots generally exhibited lower values of Fv/Fm (quantum efficiency of photosystem II) and ϕPSII (effective quantum yield of photosystem II), while females demonstrated higher values and better recovery after desiccation. Protonemata also showed variation in Fv/Fm over time and with sex, with no significant differences in ϕPSII between them. Desiccated male shoots had higher mortality rates and produced fewer new shoots. For females, the regeneration patterns varied between the desiccation-exposed groups and the control, with decreased shoot production, and some protonemata growing into filaments without forming shoots. CONCLUSION These findings improve our understanding of the ecological responses of bryophytes to desiccation stress and provide insights into their adaptive strategies in challenging environments, such as the possible rarity of males in dioicous moss populations.
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Affiliation(s)
- Wagner Luiz Dos Santos
- Graduate Program in Ecology, Biology Institute, Department of Plant Biology, Universidade Estadual de Campinas, Monteiro Lobato 255, Campinas, SP 13083-862, Brazil
| | - Andrea Medina-Ramos
- School of Life Sciences, University of Nevada, 4505 Maryland Parkway, Las Vegas, NV 89154-4004, USA
| | - Joshua Greenwood
- School of Life Sciences, University of Nevada, 4505 Maryland Parkway, Las Vegas, NV 89154-4004, USA
| | - Kátia Cavalcanti Pôrto
- Biosciences Center, Department of Botany, Universidade Federal de Pernambuco, Moraes Rego Av., s/n, Recife, PE 50670-901, Brazil
| | - Fábio Pinheiro
- Graduate Program in Ecology, Biology Institute, Department of Plant Biology, Universidade Estadual de Campinas, Monteiro Lobato 255, Campinas, SP 13083-862, Brazil
| | - Lloyd R Stark
- School of Life Sciences, University of Nevada, 4505 Maryland Parkway, Las Vegas, NV 89154-4004, USA
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Behtash F, Amini T, Mousavi SB, Seyed Hajizadeh H, Kaya O. Efficiency of zinc in alleviating cadmium toxicity in hydroponically grown lettuce (Lactuca sativa L. cv. Ferdos). BMC PLANT BIOLOGY 2024; 24:648. [PMID: 38977994 PMCID: PMC11232232 DOI: 10.1186/s12870-024-05325-9] [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: 04/28/2024] [Accepted: 06/23/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND A study on photosynthetic and enzyme activity changes and mineral content in lettuce under cadmium stress has been conducted in a greenhouse, utilizing the modulated effect of zinc (Zn) application in the nutrient solution on lettuce. Zn is a micronutrient that plays an essential role in various critical plant processes. Accordingly, three concentrations of Zn (0.022, 5, and 10 mg L- 1) were applied to hydroponically grown lettuce (Lactuca sativa L. cv. Ferdos) under three concentrations of Cd toxicity (0, 2.5, and 5 mg L- 1). RESULTS The results showed that along with increasing concentrations of zinc in the nutrient solution, growth traits such as plant performance, chlorophyll index (SPAD), minimum fluorescence (F0), leaf zinc content (Zn), leaf and root iron (Fe) content, manganese (Mn), copper (Cu), and cadmium increased as well. The maximum amounts of chlorophyll a (33.9 mg g- 1FW), chlorophyll b (17.3 mg g- 1FW), carotenoids (10.7 mg g- 1FW), maximum fluorescence (Fm) (7.1), and variable fluorescence (Fv) (3.47) were observed in the treatment with Zn without Cd. Along with an increase in Cd concentration in the nutrient solution, the maximum amounts of leaf proline (5.93 mmol g- 1FW), malondialdehyde (MDA) (0.96 μm g- 1FW), hydrogen peroxide (H2O2) (22.1 μm g- 1FW), and superoxide dismutase (SOD) (90.3 Unit mg- 1 protein) were recorded in lettuce treated with 5 mg L- 1 of Cd without Zn. Additionally, the maximum activity of leaf guaiacol peroxidase (6.46 Unit mg- 1 protein) was obtained with the application of Cd at a 5 mg L- 1 concentration. CONCLUSIONS In general, an increase in Zn concentration in the nutrient solution decreased the absorption and toxicity of Cd in lettuce leaves, as demonstrated in most of the measured traits. These findings suggest that supplementing hydroponic nutrient solutions with zinc can mitigate the detrimental effects of cadmium toxicity on lettuce growth and physiological processes, offering a promising strategy to enhance crop productivity and food safety in cadmium-contaminated environments.
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Affiliation(s)
- Farhad Behtash
- Department of Horticulture, Faculty of Agriculture, University of Maragheh, Maragheh, 55136-553, Iran.
| | - Trifeh Amini
- Department of Horticulture, Faculty of Agriculture, University of Maragheh, Maragheh, 55136-553, Iran
| | - Seyed Bahman Mousavi
- Department of Soil sciences, Faculty of Agriculture, University of Maragheh, Maragheh, Iran
| | - Hanifeh Seyed Hajizadeh
- Department of Horticulture, Faculty of Agriculture, University of Maragheh, Maragheh, 55136-553, Iran.
| | - Ozkan Kaya
- Republic of Turkey Ministry of Agriculture and Forestry, Erzincan Horticultural Research Institute, Erzincan, 24060, Turkey.
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58102, USA.
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Song X, Zhao W, Cui S, Su X, Yu J, Guo L, Song K. Deciphering the dual role of persistent luminescence materials: Toxicity and photoreception effects on rice development. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174542. [PMID: 38977096 DOI: 10.1016/j.scitotenv.2024.174542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/28/2024] [Accepted: 07/04/2024] [Indexed: 07/10/2024]
Abstract
Studies on the toxicity of micro- and nanomaterials in plants have primarily focused on their intrinsic effects. However, there is often oversight when considering the potential perceptual responses that plants may exhibit in response to these materials. In this investigation, we assessed the impact of three commercially available persistent luminescence materials (PLMs) that emit red, green, or blue light under various environmental conditions. We subjected rice (Oryza sativa L.), a short-day plant, to nine distinct treatments, including exposure to particles in isolation, their nocturnal afterglow, or a combination of both. We thoroughly examined rice seedling morphology, photosynthesis patterns, metabolite dynamics, and flowering gene expression to determine the biological responses of plants to these particles. These findings demonstrated that PLMs stably interact with rice, and their emitted afterglow precisely matches the perceptual bandwidth of rice photoreceptors. Notably, the nocturnal afterglow from the red and blue PLMs enhanced the vegetative growth of rice seedlings while inhibiting their reproductive development. The blue PLMs exhibited the most pronounced positive effects, while the red PLMs exhibited inhibitory effects. When exposed to a combination of red and blue PLMs, rice displays enhanced growth and development. The observed alterations in the expression patterns of genes responsible for flowering supported these effects. We concluded that PLMs influence rice growth and development due to their inherent properties and intermittent illumination during dark periods. Both factors collectively shape rice growth and development.
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Affiliation(s)
- Xiangwei Song
- School of Life Science, Changchun Normal University, Changchun, 130032, China
| | - Wei Zhao
- School of Life Science, Changchun Normal University, Changchun, 130032, China
| | - Shuyuan Cui
- School of Life Science, Changchun Normal University, Changchun, 130032, China
| | - Xiaomeng Su
- School of Life Science, Changchun Normal University, Changchun, 130032, China
| | - Jingbo Yu
- School of Life Science, Changchun Normal University, Changchun, 130032, China
| | - Liquan Guo
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China.
| | - Kai Song
- School of Life Science, Changchun Normal University, Changchun, 130032, China; Research Institute for Scientific and Technological Innovation, Changchun Normal University.
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Zhang H, Xiong X, Guo K, Zheng M, Cao T, Yang Y, Song J, Cen J, Zhang J, Jiang Y, Feng S, Tian L, Li X. A rapid aureochrome opto-switch enables diatom acclimation to dynamic light. Nat Commun 2024; 15:5578. [PMID: 38956103 PMCID: PMC11219949 DOI: 10.1038/s41467-024-49991-7] [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: 08/28/2023] [Accepted: 06/27/2024] [Indexed: 07/04/2024] Open
Abstract
Diatoms often outnumber other eukaryotic algae in the oceans, especially in coastal environments characterized by frequent fluctuations in light intensity. The identities and operational mechanisms of regulatory factors governing diatom acclimation to high light stress remain largely elusive. Here, we identified the AUREO1c protein from the coastal diatom Phaeodactylum tricornutum as a crucial regulator of non-photochemical quenching (NPQ), a photoprotective mechanism that dissipates excess energy as heat. AUREO1c detects light stress using a light-oxygen-voltage (LOV) domain and directly activates the expression of target genes, including LI818 genes that encode NPQ effector proteins, via its bZIP DNA-binding domain. In comparison to a kinase-mediated pathway reported in the freshwater green alga Chlamydomonas reinhardtii, the AUREO1c pathway exhibits a faster response and enables accumulation of LI818 transcript and protein levels to comparable degrees between continuous high-light and fluctuating-light treatments. We propose that the AUREO1c-LI818 pathway contributes to the resilience of diatoms under dynamic light conditions.
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Affiliation(s)
- Huan Zhang
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, China
| | - Xiaofeng Xiong
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Kangning Guo
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Mengyuan Zheng
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- China National Botanical Garden, Beijing, China
| | - Tianjun Cao
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, China
| | - Yuqing Yang
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jiaojiao Song
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jie Cen
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jiahuan Zhang
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Yanyou Jiang
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Shan Feng
- Mass Spectrometry & Metabolomics Core Facility, The Biomedical Research Core Facility, Center for Research Equipment and Facilities, Westlake University, Hangzhou, China
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Lijin Tian
- Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- China National Botanical Garden, Beijing, China
| | - Xiaobo Li
- Research Center for Industries of the Future, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China.
- Institute of Biology, Westlake Institute for Advanced Study, Hangzhou, China.
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46
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Bülbül S, Sezgin Muslu A, Saglam A, Kadioglu A. Heliotropium thermophilum adapts to high soil temperature in natural conditions due to its highly active antioxidant system protecting its photosynthetic machinery. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23325. [PMID: 38991103 DOI: 10.1071/fp23325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 06/17/2024] [Indexed: 07/13/2024]
Abstract
Heliotropium thermophilum (Boraginaceae) plants have strong antioxidant properties. This study investigated the effectiveness of the antioxidant system in protecting the photosynthetic machinery of H. thermophilum . Plants were obtained from Kızıldere geothermal area in Buharkent district, Aydın, Turkey. Plants in the geothermal area that grew at 25-35°C were regarded as the low temperature group, while those that grew at 55-65°C were regarded as the high temperature group. We analysed the physiological changes of these plants at the two temperature conditions at stage pre-flowering and flowering. We meaured the effect of high soil temperature on water potential, malondialdehyde, cell membrane stability, and hydrogen peroxide analysis to determine stress levels on leaves and roots. Changes in antioxidant enzyme activities, ascorbate and chlorophyll content, chlorophyll fluorescence, photosynthetic gas exchange parameters, and photosynthetic enzymes (Rubisco and invertase) activities were also determined. Our results showed minimal changes to stress levels, indicating that plants were tolerant to high soil temperatures. In general, an increase in antioxidant enzyme activities, ascorbat levels, and all chlorophyll fluorescence parameters except for non-photochemical quenching (NPQ) and F v /F m were observed. The pre-flowering and flowering stages were both characterised by decreased NPQ, despite F v /F m not changing. Additionally, there was a rise in the levels of photosynthetic gas exchange parameters, Rubisco, and invertase activities. High temperature did not affect photosynthetic yield because H. thermophilum was found to stimulate antioxidant capacity, which reduces oxidative damage and maintains its photosynthetic machinery in high temperature conditions and therefore, it is tolerant to high soil temperature.
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Affiliation(s)
- Sevgi Bülbül
- Faculty of Science, Department of Biology, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Asiye Sezgin Muslu
- Faculty of Science, Department of Biology, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Aykut Saglam
- Faculty of Science, Department of Molecular Biology and Genetics, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Asim Kadioglu
- Faculty of Science, Department of Biology, Karadeniz Technical University, Trabzon 61080, Turkey
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47
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Boonpeng C, Pischom M, Butrid P, Noikrad S, Boonpragob K. Laboratory and field measurements of water relations, photosynthetic parameters, and hydration traits in macrolichens in a tropical lower montane rainforest in Thailand. JOURNAL OF PLANT RESEARCH 2024; 137:641-658. [PMID: 38619624 DOI: 10.1007/s10265-024-01542-3] [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: 02/08/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
Ecophysiological studies of lichens in tropical Asia are rare, and additional studies can increase the understanding of lichen life in this region. The main aim of this study was to observe the relationships between water availability and photosynthetic parameters, as well as hydration trait parameters, in macrolichens during the rainy and dry seasons in a tropical forest. A total of 11 lichen species growing in a lower montane rainforest in Thailand were collected and studied. The results clearly showed that the specific thallus mass (STM), net photosynthetic rate (Pn), the potential quantum yield of primary photochemistry (Fv/Fm), chlorophyll content, and carotenoid content of almost all lichens were lower in the dry season than in the rainy season. Field measurements in the dry season revealed that only the foliose chlorolichen Parmotrema tinctorum was metabolically active and exhibited slight carbon assimilation. In the rainy season, all lichens started their photosynthesis in the early morning, reached maximal values, declined, and ceased when the thalli desiccated. The photosynthetically active period of the lichens was approximately 2-3 h in the morning, and the activities of the cyanolichens ended approximately 30 min after the chlorolichens. The hydration trait parameters, including the STM, maximal water content (WCmax), and water holding capacity (WHC), were greater in the cyanolichens. In addition, the maximal Pn (Pnmax) and optimal water content (WCopt) for Pn were also greater in the cyanolichens, but the maximal Fv/Fm (Fv/Fmmax) was lower. The cyanolichens compensated for their inability to use humid air to restore photosynthesis by having higher water content and storage, higher photosynthetic rates, and longer photosynthetically active periods. This study provides additional insights into lichen ecophysiology in tropical forests that can be useful for lichen conservation.
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Affiliation(s)
- Chaiwat Boonpeng
- Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand.
- Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand.
| | - Marisa Pischom
- Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand
| | - Pawanrat Butrid
- Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand
| | - Sutatip Noikrad
- Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand
| | - Kansri Boonpragob
- Lichen Research Unit, Department of Biology, Faculty of Science, Ramkhamhaeng University, Hua Mark, Bang Kapi, Bangkok, 10240, Thailand
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48
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Szőke L, Tóth B, Javornik T, Lazarević B. Quantifying aluminum toxicity effects on corn phenotype using advanced imaging technologies. PLANT DIRECT 2024; 8:e623. [PMID: 39040680 PMCID: PMC11262852 DOI: 10.1002/pld3.623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/21/2024] [Accepted: 07/06/2024] [Indexed: 07/24/2024]
Abstract
Soil acidity (pH <5.5) limits agricultural production due to aluminum (Al) toxicity. The primary target of Al toxicity is the plant root. However, symptoms can be observed on the shoots. This study aims to determine the potential use of chlorophyll fluorescence imaging, multispectral imaging, and 3D multispectral scanning technology to quantify the effects of Al toxicity on corn. Corn seedlings were grown for 13 days in nutrient solutions (pH 4.0) with four Al treatments: 50, 100, 200, and 400 μM and a control (0 μM AlCl3 L-1). During the experiment, four measurements were performed: four (MT1), six (MT2), 11 (MT3), and 13 (MT4) days after the application of Al treatments. The most sensitive traits affected by Al toxicity were the reduction of plant growth and increased reflectance in the visible wavelength (affected at MT1). The reflectance of red wavelengths increased more significantly compared to near-infrared and green wavelengths, leading to a decrease in the normalized difference vegetation index and the Green Leaf Index. The most sensitive chlorophyll fluorescence traits, effective quantum yield of PSII, and photochemical quenching coefficient were affected after prolonged Al exposure (MT3). This study demonstrates the usability of selected phenotypic traits in remote sensing studies to map Al-toxic soils and in high-throughput phenotyping studies to screen Al-tolerant genotypes.
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Affiliation(s)
- Lóránt Szőke
- Department of Plant NutritionUniversity of Zagreb Faculty of AgricultureZagrebCroatia
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental ManagementUniversity of DebrecenDebrecenHungary
| | - Brigitta Tóth
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental ManagementUniversity of DebrecenDebrecenHungary
| | - Tomislav Javornik
- Centre of Excellence for Biodiversity and Molecular Plant BreedingUniversity of ZagrebZagrebCroatia
- Department of Plant BiodiversityUniversity of Zagreb Faculty of AgricultureZagrebCroatia
| | - Boris Lazarević
- Department of Plant NutritionUniversity of Zagreb Faculty of AgricultureZagrebCroatia
- Centre of Excellence for Biodiversity and Molecular Plant BreedingUniversity of ZagrebZagrebCroatia
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49
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Lucas M, Diaz-Espejo A, Romero-Jimenez D, Peinado-Torrubia P, Delgado-Vaquero A, Álvarez R, Colmenero-Flores JM, Rosales MA. Chloride reduces plant nitrate requirement and alleviates low nitrogen stress symptoms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 212:108717. [PMID: 38761542 DOI: 10.1016/j.plaphy.2024.108717] [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: 02/06/2024] [Revised: 04/12/2024] [Accepted: 05/08/2024] [Indexed: 05/20/2024]
Abstract
Chloride (Cl-) is traditionally categorized as an antagonist of nitrate (NO3-) because Cl- hinders plant NO3- transport and accumulation. However, we have recently defined Cl- as a beneficial macronutrient for higher plants, due to specific functions that lead to more efficient use of water, nitrogen (N) and CO2 under optimal N and water supply. When accumulated in leaves at macronutrient levels, Cl- promotes growth through osmotic, physiological, metabolic, anatomical and cellular changes that improve plant performance under optimal NO3- nutrition. Nitrate over-fertilization in agriculture can adversely affect crop yield and nature, while its deficiency limits plant growth. To study the relationship between Cl- nutrition and NO3- availability, we have characterized different physiological responses such as growth and yield, N-use efficiency, water status, photosynthesis, leaf anatomy, pigments and antioxidants in tomato plants treated with or without 5 mM Cl- salts and increasing NO3- treatments (3-15 mM). First, we have demonstrated that 5 mM Cl- application can reduce the use of NO3- in the nutrient solution by up to half without detriment to plant growth and yield in tomato and other horticultural plants. Second, Cl- application reduced stress symptoms and improved plant growth under low-NO3- conditions. The Cl--dependent resistance to low-N stress resulted from: more efficient use of the available NO3-; improved plant osmotic and water status regulation; improved stomatal conductance and photosynthetic rate; and better antioxidant response. We proposed that beneficial Cl- levels increase the crop ability to grow better with lower NO3- requirements and withstand N deficiency, promoting a more sustainable and resilient agriculture.
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Affiliation(s)
- Marta Lucas
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain; Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain
| | - Antonio Diaz-Espejo
- Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain; Irrigation and Crop Ecophysiology Group, IRNAS, CSIC, 41012, Seville, Spain
| | - David Romero-Jimenez
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain; Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain
| | - Procopio Peinado-Torrubia
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain
| | - Alba Delgado-Vaquero
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain; Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain
| | - Rosario Álvarez
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41080, Sevilla, Spain
| | - José M Colmenero-Flores
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain; Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain
| | - Miguel A Rosales
- Group of Plant Ion and Water Regulation, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), Consejo Superior de Investigaciones Científicas (CSIC), 41012, Seville, Spain; Laboratory of Plant Molecular Ecophysiology, IRNAS, CSIC, 41012, Seville, Spain; Department of Stress, Development and Signaling in Plants, Estación Experimental Del Zaidín (EEZ), CSIC, 18008, Granada, Spain.
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50
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Chungloo D, Tisarum R, Samphumphuang T, Pipatsitee P, Sotesaritkul T, Cha-Um S. Exogenous glycine betaine alleviates water-deficit stress in Indian pennywort (Centella asiatica) under greenhouse conditions. PROTOPLASMA 2024; 261:625-639. [PMID: 38206421 DOI: 10.1007/s00709-023-01919-6] [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: 05/23/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024]
Abstract
Centella asiatica (Indian pennywort) is a green leafy vegetable containing centelloside' (triterpenoid), a key phytochemical component in traditional medicine. Being a glycophytic species, they exhibit decline in growth performance and yield traits when subjected to water-deficit (WD) conditions. Glycine betaine (GB) is a low molecular-weight organic metabolite that plays a crucial role in abiotic stress conditions in higher plants. The objective of this study was to investigate the potential of GB in alleviating water-deficit stress (in terms of morphological and physiological responses) in two different genotypes of Indian pennywort, "Nakhon Pathom" (NP; high centelloside-yielding genotype) and "Pathum Thani" (PT; low centelloside-yielding genotype). The genotypes of Indian pennywort were propagated by stolon cutting and transplanted into plastic bags containing 2 kg of garden soil. At the flower-initiation stage (30 days after transplantation), uniform plant material was treated exogenously with 0 (control), 25, and 50 mM GB at 100 mL per plant (one-time foliar spray) and then divided into two groups, 1) well watered (WW; irrigated daily with 400 mL fresh water; 98% field capacity) and 2) water deficit (WD; withheld water for 14 days; 72% field capacity). Foliar application of GB (25 mM) significantly improved leaf osmotic potential in NP under WD conditions via osmotic adjustment by free proline and fructose. Differences in leaf temperature (Tleaf) between WD and WW in NP were maximized (+ 1.93 °C) and the gap of Tleaf was reduced in the case of 25-50 mM GB application. Similarly, crop water stress index (CWSI) in NP and PT plants under WD condition was significantly increased by 1.95- and 1.86-fold over the control, respectively; however, it was significantly decreased by exogenous GB application. Increasing Tleaf and CWSI in drought-stressed plants was closely related to stomatal closure, leading to reduced gas exchange parameters, i.e., stomatal conductance (gs), transpiration rate (E), net photosynthetic rate (Pn), and intercellular CO2 concentration (Ci), and consequently decreased plant biomass and total centelloside yield. Overall physiological, morphological, and secondary metabolite traits were enhanced in NP under WD conditions using 25 mM GB exogenous application compared with the control. The study highlights the significance of GB in Indian pennywort production under limited water irrigation (water deficit) with higher vegetable yield and phytochemical stabilization.
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Affiliation(s)
- Daonapa Chungloo
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Rujira Tisarum
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Thapanee Samphumphuang
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Piyanan Pipatsitee
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Thanyaporn Sotesaritkul
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand
| | - Suriyan Cha-Um
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Khlong Nueng, Khlong Luang, 12120, Pathum Thani, Thailand.
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