1
|
Adeel M, Zain M, Shakoor N, Azeem I, Hussain M, Ahmad MA, Chaudhary S, Zaheer U, Aziz MA, Ahmar S, Yukui R, Xu M. Estrogens in plants and emerging risks to human health. ENVIRONMENT INTERNATIONAL 2023; 178:107985. [PMID: 37364304 DOI: 10.1016/j.envint.2023.107985] [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: 02/08/2023] [Revised: 04/29/2023] [Accepted: 05/17/2023] [Indexed: 06/28/2023]
Abstract
Steroid estrogens (SEs) accumulate in agro-food systems through wastewater treatment and dairy manure, but very little is known about their potential impact on plants and dietary risk to human health. We conducted a meta-analysis to address key questions including, how plants respond to SEs under different environmental conditions, what is the accumulation potential of SEs in distinct plant families, and associated daily dietary intake risks to humans. Based on 517 endpoints, we revealed that various crop species show a heterogeneous response to SEs types (n = 140), SEs concentrations (n = 141), and exposure medium (n = 166). A subsidy-stress response was observed in terms of SEs accumulation for plant growth. The bioaccumulation of SE in plants was shown to be greatest in sand, followed by soil, and hydroponic media. Plants exposed to SEs exhibit considerable changes in physiological and biochemical characteristics. Surprisingly, food crops such as carrot and potato were found as major source of SEs daily intake in food chain but their consequences remains largely unknown. Further field-oriented research is needed to unveil the threshold levels for SEs in soil-plant systems as it may pose a global threat to human health. The state of knowledge presented here may guide towards urgently needed future investigations in this field for reducing the risk in SEs in agro-food systems.
Collapse
Affiliation(s)
- Muhammad Adeel
- BNU-HKUST Laboratory of Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, Guangdong 519087, PR China.
| | - Muhammad Zain
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College of Yangzhou University, Yangzhou 225009, China
| | - Noman Shakoor
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation and College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Imran Azeem
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation and College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Muzammil Hussain
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Arslan Ahmad
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Sadaf Chaudhary
- Department of Botany, University of Agriculture Faisalabad, Pakistan
| | - Usama Zaheer
- Institute of Soil and Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Muhammad Abdullah Aziz
- Institute of Soil and Environmental Sciences, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Sunny Ahmar
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia, Katowice, Poland
| | - Rui Yukui
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation and College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, PR China
| | - Ming Xu
- BNU-HKUST Laboratory of Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, Guangdong 519087, PR China
| |
Collapse
|
2
|
Haliloğlu K, Türkoğlu A, Balpınar Ö, Öztürk Hİ, Özkan G, Poczai P. Effects of mammalian sex hormones on in vitro organogenesis of common bean (Phaseolus vulgaris L.). Sci Rep 2023; 13:3337. [PMID: 36849811 PMCID: PMC9971183 DOI: 10.1038/s41598-023-30090-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 02/15/2023] [Indexed: 03/01/2023] Open
Abstract
Beans are an important plant species and are one of the most consumed legumes in human nutrition, especially as a protein, vitamin, mineral, and fiber source. Common bean (Phaseolus vulgaris L.) is a plant that also has an important role in natural nitrogen fixation. Currently, in vitro regeneration and micropropagation applications are limited in relation to genetic factors in bean Accordingly, there is great need to optimize micropropagation and tissue culture methods of the bean plant. To date, the effect of mammalian sex hormones (MSH) on in vitro conditions in P. vulgaris L. is poorly understood. This study examined the effects of different types of explants (embryo, hypocotyl, plumule, and radicle), MSH type (progesterone, 17 β-estradiol, estrone, and testosterone), and MSH concentration (10-4, 10-6, 10-8 and 10-10 mmol L-1) on the responding explants induction rate (REI), viability of plantlets rate (VPR), shoot proliferation rate (SPR), root proliferation rate (RPR), and callus induction rate (CIR). The effects of mammalian sex hormones, concentrations, explant type, and their interactions were statistically significant (p ≤ 0.01) in all examined parameters. The best explants were embryo and plumule. Our results showed that the highest REI rate (100%) was recorded when 10-10 mmol L-1 of all MSH was applied to MS medium using the plumule explant. The highest VPR (100%) was obtained when 10-10 mmol L-1 of all MSH was applied to MS medium using the plumule explant. The highest root proliferation rates (77.5%) were recorded in MS medium supplemented with 10-8 mmol L-1 17β-estradiol using embryo explant. The highest percentage of shoot-forming explants (100%) generally was obtained from embryo and plumule cultured in the MS culture medium with low MSH concentration. In addition, the highest CIR (100%) was obtained from embryo and plumule explant cultured in MS medium containing 10-10 mmol L-1 of all MSH types. In conclusion, we observed that mammalian sex hormones may be used in bean in vitro culture.
Collapse
Affiliation(s)
- Kamil Haliloğlu
- grid.411445.10000 0001 0775 759XDepartment of Field Crops, Faculty of Agriculture, Ataturk University, 25240 Erzurum, Turkey
| | - Aras Türkoğlu
- Department of Field Crops, Faculty of Agriculture, Necmettin Erbakan University, 42310, Konya, Turkey.
| | - Özge Balpınar
- grid.411049.90000 0004 0574 2310Hemp Research Institute, Ondokuz Mayıs University, 55200 Samsun, Turkey
| | - Halil İbrahim Öztürk
- grid.412176.70000 0001 1498 7262Health Services Vocational School, Erzincan Binali Yıldırım University, 24100 Erzincan, Turkey
| | - Güller Özkan
- grid.7256.60000000109409118Department of Biology, Faculty of Science, Ankara University, 06100 Ankara, Turkey
| | - Peter Poczai
- Botany Unit, Finnish Museum of Natural History, University of Helsinki, P.O. Box 7, 00014, Helsinki, Finland.
| |
Collapse
|
3
|
The Role of Plant Progesterone in Regulating Growth, Development, and Biotic/Abiotic Stress Responses. Int J Mol Sci 2022; 23:ijms231810945. [PMID: 36142864 PMCID: PMC9501841 DOI: 10.3390/ijms231810945] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 11/17/2022] Open
Abstract
Progesterone is a steroid hormone that performs important functions in mammals. However, studies on its physiological functions in plants have gradually increased in recent years. Therefore, this review summarizes the regulatory functions of progesterone on plant growth and development, as well as its response to stress. Moreover, the plant metabolic processes of progesterone are also discussed. Overall, progesterone is ubiquitous in plants and can regulate numerous plant physiological processes at low concentrations. Since progesterone shares similar characteristics with plant hormones, it is expected to become a candidate for plant hormone. However, most of the current research on progesterone in plants is limited to the physiological level, and more molecular level research is needed to clarify progesterone signaling pathways.
Collapse
|
4
|
Agathokleous E, Barceló D, Rinklebe J, Sonne C, Calabrese EJ, Koike T. Hormesis induced by silver iodide, hydrocarbons, microplastics, pesticides, and pharmaceuticals: Implications for agroforestry ecosystems health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 820:153116. [PMID: 35063521 DOI: 10.1016/j.scitotenv.2022.153116] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
Increasing amounts of silver iodide (AgI) in the environment are expected because of the recent massive expansion of weather modification programs. Concurrently, pharmaceuticals, microplastics, hydrocarbons, and pesticides in terrestrial ecosystems continue contaminating forests and agroforests. Our review supports that AgI induces hormesis, a biphasic dose response characterized by often beneficial low-dose responses and toxic high-dose effects, which adds to the evidence for pharmaceuticals, microplastics, hydrocarbons, and pesticides induced hormesis in numerous species. Doses smaller than the no-observed-adverse-effect-level (NOAEL) positively affect defense physiology, growth, biomass, yields, survival, lifespan, and reproduction. They also lead to negative or undesirable outcomes, including stimulation of pathogenic microbes, pest insects, and weeds with enhanced resistance to drugs and potential negative multi- or trans-generational effects. Such sub-NOAEL effects perplex terrestrial ecosystems managements and may compromise combating outbreaks of disease vectors that can threaten not only forest and agroforestry health but also sensitive human subpopulations living in remote forested areas.
Collapse
Affiliation(s)
- Evgenios Agathokleous
- School of Applied Meteorology, Nanjing University of Information Science and Technology (NUIST), Ningliu Rd. 219, Nanjing, Jiangsu 210044, China.
| | - Damià Barceló
- Institute of Environmental Assessment and Water Research, IDAEA-CSIC, C/ Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research, ICRA-CERCA, Emili Grahit 101, 17003 Girona, Spain
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Wuppertal, Germany; Department of Environment, Energy and Geoinformatics, Sejong University, Seoul, Republic of Korea
| | - Christian Sonne
- Department of Bioscience, Aarhus University, Arctic Research Center (ARC), Frederiksborgvej 399, PO box 358, DK-4000 Roskilde, Denmark; Henan Province Engineering Research Center for Biomass Value-added Products, School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
| | - Takayoshi Koike
- Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Hokkaido, Japan
| |
Collapse
|
5
|
Estrogens and Androgens in Plants: The Last 20 Years of Studies. PLANTS 2021; 10:plants10122783. [PMID: 34961254 PMCID: PMC8705621 DOI: 10.3390/plants10122783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 11/16/2022]
Abstract
Although the only known steroid hormones in plants are brassinosteroids, interestingly, mammalian steroid hormones such as androgens or estrogens are also part of the plant metabolic profile. This presented review is focused on the progress that has been made in this matter during the last two decades. The presence of testosterone, 17β-estradiol, and other androgens/estrogens in plants (particularly those that can be measured using more advanced techniques) is described. The physiological activity of androgens and estrogens, especially in plants’ stress response, are discussed, together with some possible mechanisms of their action. The current knowledge indicates that although androgens and estrogens do not have the status of hormones in plants, they are physiologically active and can serve as regulators that support the activity of classic hormones in (1) regulating the various processes connected with plant growth and development and (2) the interaction of plants with their environment.
Collapse
|
6
|
Progesterone Promotes Mitochondrial Respiration at the Biochemical and Molecular Level in Germinating Maize Seeds. PLANTS 2021; 10:plants10071326. [PMID: 34209697 PMCID: PMC8309107 DOI: 10.3390/plants10071326] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/08/2021] [Accepted: 06/18/2021] [Indexed: 11/22/2022]
Abstract
This research aimed to investigate the effects of progesterone, a mammalian steroid sex hormone, on the mitochondrial respiration in germinating maize seeds. For this purpose, maize seeds were divided into four different groups (control, 10−6, 10−8, and 10−10 mol·L−1 progesterone) and were grown in a germination cabinet in the dark at 24.5 ± 0.5 °C for 4 d. The changes in gene expression levels of citrate synthase (CS), cytochrome oxidase (COX19), pyruvate dehydrogenase (Pdh1), and ATP synthase (ATP6), which is involved in mitochondrial respiration, were studied in root and cotyledon tissues. Significant increases were recorded in the gene expression levels of all studied enzymes. In addition, progesterone applications stimulated activities of malate synthase (MS), isocitrate lyase (ICL), and alpha-amylase, which are important enzymes of the germination step. The changes in gene expression levels of mas1 and icl1 were found parallel to the rise in these enzymes’ activities. It was determined similar increases in root and coleoptile lengths and total soluble protein and total carbohydrate contents. The most remarkable changes were detected in 10−8 mol·L−1 progesterone-treated seedlings. These results clearly indicate that progesterone stimulates mitochondrial respiration by inducing biochemical and molecular parameters and thus accelerates seed germination thanks to the activation of other pathways related to mitochondrial respiration.
Collapse
|
7
|
Turk H. Chitosan-induced enhanced expression and activation of alternative oxidase confer tolerance to salt stress in maize seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 141:415-422. [PMID: 31229926 DOI: 10.1016/j.plaphy.2019.06.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 05/18/2023]
Abstract
This study aimed to investigate the possible alleviating effect of chitosan on salt-induced growth retardation and oxidative stress and to elucidate whether this effect is linked to activation of mitochondrial respiration on the basis of alternative respiration in maize seedlings. Salt stress significantly reduced root length and plant height in comparison to the control, whereas foliar application of chitosan ameliorated the adverse effect of salinity to a certain degree. Moreover, chitosan resulted in plant growth promotion as compared to unstressed seedlings. The separate applications of chitosan and salt had a stimulatory effect on the activities of antioxidant enzymes; however, combined application of chitosan and salt were more effective than that of chitosan or salt alone. Similarly, mitochondrial total respiration rate (Vt) and alternative respiration capacity (Valt) were increased by separate applications of chitosan and salt; however, the combination of chitosan and salt gave the highest values for these parameters. The highest values of Valt/Vt was recorded at seedlings treated with salt plus chitosan. Similarly, cytochrome respiration capacity was also increased by chitosan in both stress-free and stressed conditions. In addition, AOX1, encoding alternative oxidase, was significantly upregulated by chitosan and/or salt. The maximum transcript level was recorded at seedlings treated with salt plus chitosan. Chitosan also significantly decreased superoxide anion and hydrogen peroxide contents and lipid peroxidation level under normal and the stressed conditions. These results suggest that the mitigating effect of chitosan on salt stress is linked to activation of alternative respiration at biochemical and molecular level.
Collapse
Affiliation(s)
- Hulya Turk
- East Anatolian High Technology Application and Research Center, Ataturk University, Erzurum, Turkey.
| |
Collapse
|
8
|
Hao J, Li X, Xu G, Huo Y, Yang H. Exogenous progesterone treatment alleviates chilling injury in postharvest banana fruit associated with induction of alternative oxidase and antioxidant defense. Food Chem 2019; 286:329-337. [PMID: 30827615 DOI: 10.1016/j.foodchem.2019.02.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 01/25/2019] [Accepted: 02/06/2019] [Indexed: 10/27/2022]
Abstract
The effects of exogenous progesterone (PROG) on chilling injury (CI) in postharvest banana fruit were investigated. Concentration screening tests showed that 10-5 mol/l PROG was most effective in reducing CI in banana fruit stored for 25 d at 5 ± 1 °C, but did not markly increase PROG content of pulps. This PROG treatment significantly reduced the electrolyte leakage, levels of malondialdehyde, O2- production rate and H2O2 contents in banana compared with control fruit. The PROG treatment caused an early induction of alternative oxidase (AOX) at the transcript and protein level to reduce the generation of O2- and H2O2. PROG treatment also enhanced the transcript levels and activities of antioxidant enzymes and maintained higher levels of reduced glutathione and ascorbic acid than the control fruit. These results suggested that PROG attenuating CI in banana fruit may be attributed to the induction of AOX and the improvement of enzyme and non-enzymatic antioxidant defenses.
Collapse
Affiliation(s)
- Jiashi Hao
- School of Agriculture and Food Science, Zhejiang A & F University, Wusu Street # 666, Lin'an District, Hangzhou 311300, People's Republic of China; College of Food Science and Engineering, Shanxi Agricultural University, Taigu County, Shanxi 030801, People's Republic of China
| | - Xia Li
- School of Agriculture and Food Science, Zhejiang A & F University, Wusu Street # 666, Lin'an District, Hangzhou 311300, People's Republic of China
| | - Guangzhi Xu
- School of Agriculture and Food Science, Zhejiang A & F University, Wusu Street # 666, Lin'an District, Hangzhou 311300, People's Republic of China
| | - Yanrong Huo
- School of Agriculture and Food Science, Zhejiang A & F University, Wusu Street # 666, Lin'an District, Hangzhou 311300, People's Republic of China
| | - Huqing Yang
- School of Agriculture and Food Science, Zhejiang A & F University, Wusu Street # 666, Lin'an District, Hangzhou 311300, People's Republic of China.
| |
Collapse
|
9
|
Agathokleous E, Kitao M, Calabrese EJ. Human and veterinary antibiotics induce hormesis in plants: Scientific and regulatory issues and an environmental perspective. ENVIRONMENT INTERNATIONAL 2018; 120:489-495. [PMID: 30149340 DOI: 10.1016/j.envint.2018.08.035] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 06/08/2023]
Abstract
UNLABELLED Veterinary and human pharmaceuticals have been widely used in the developed world, thus increasing their accumulation in the environment and thereby posing ecological risks. Earlier studies report that active pharmaceutical ingredients induce hormesis in plants, i.e. at low doses may enhance plant health whereas at high doses may suppress plant vigor. There is hitherto no study critically reviewing the effects of antibiotics on plants within a hormetic context despite effects of low doses on plants can have implications to animals, including humans, and to ecological processes. This study critically reviews for first time antibiotic-induced hormesis in plants, both quantitatively and qualitatively. Hormesis was induced by several antibiotics in a variety of species and endpoints. The maximum stimulatory response (MAX) was commonly <1.5-fold the control response and the distance from MAX to no-observed-adverse-effect level (NOAEL) was commonly up to 10-fold. Further quantitative and qualitative evaluations are provided and discussed in relation to scientific and regulatory aspects. Low doses of antibiotics are equally important as high doses as they can negatively affect plants, depending on plant tissues and the time tissues are subject to exposure. Antibiotic-induced hormesis in plants provides a significant environmental perspective and should be incorporated into the hazard and risk assessment process. CAPSULE Common antibiotics released in the environment induce hormesis in plants, urging for re-examination of the risk assessment practices by worldwide regulatory agencies.
Collapse
Affiliation(s)
- Evgenios Agathokleous
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido 062-8516, Japan; Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Sapporo, Hokkaido 060-8589, Japan.
| | - Mitsutoshi Kitao
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido 062-8516, Japan
| | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
| |
Collapse
|
10
|
Upadhyay P, Maier C. Effects of 17<i>β</i>-Estradiol on Growth, Primary Metabolism, Phenylpropanoid-Flavonoid Pathways and Pathogen Resistance in <i>Arabidopsis thaliana</i>. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ajps.2016.713160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
11
|
Upadhyay P, Maier C. Alleviation of Drought Stress in <i>Arabidopsis thaliana</i> by 17<i>β</i>-Estradiol Application. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ajps.2016.714186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
12
|
Gorcek Z, Erdal S. Lipoic acid mitigates oxidative stress and recovers metabolic distortions in salt-stressed wheat seedlings by modulating ion homeostasis, the osmo-regulator level and antioxidant system. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:2811-7. [PMID: 25427940 DOI: 10.1002/jsfa.7020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/20/2014] [Indexed: 05/11/2023]
Abstract
BACKROUND Soil salinity is one of the most detrimental environmental factors affecting the growth of plants and limiting their agricultural productivity. This study investigated whether exogenous lipoic acid (LA) pretreatment plays a role in promoting salt tolerance in wheat seedlings. The seedlings were treated with LA (1.75 mmol L(-1)) and salt (100 mmol L(-1) NaCl) separately and a combination of them. RESULTS Salt stress significantly reduced relative water content, leaf surface area, ribulose bisphosphate carboxylase expression, and chlorophyll content but increased the content of osmo-regulator protein, carbohydrates and proline. In addition, salinity led to an imbalance in the inorganic composition of wheat leaves. While it elevated Na(+) content compared to control, Ca content and K(+)/Na(+) ratio were reduced. Under saline conditions, despite increases in antioxidant enzyme activity and levels of antioxidant compounds (ascorbate and glutathione), the content of reactive oxygen species (superoxide anion, hydrogen peroxide) and malondialdehyde were higher than in control seedlings. LA significantly promoted osmo-regulator level and antioxidant enzyme activities compared to stressed seedlings alone. Also, it both increased levels of ascorbate and glutathione and regenerated their oxidised forms, thus contributing to maintaining cellular redox status. Similarly, LA prevented excessive accumulation of Na(+) and promoted K(+)/Na(+) ratio and Ca content. Reactive oxygen species content was significantly reduced, and the inhibitions in the above parameters markedly recovered. CONCLUSION LA reduced salinity-induced oxidative damage and thus contributed to the growth and development of plants in saline soils by modulating ion homeostasis between plant and soil as well as in osmo-regulator content and antioxidant system.
Collapse
Affiliation(s)
- Zeynep Gorcek
- Department of Biology, Science Faculty, Ataturk University, Erzurum, 25240, Turkey
| | - Serkan Erdal
- Department of Biology, Science Faculty, Ataturk University, Erzurum, 25240, Turkey
| |
Collapse
|
13
|
Janeczko A, Oklestkova J, Novak O, Śniegowska-Świerk K, Snaczke Z, Pociecha E. Disturbances in production of progesterone and their implications in plant studies. Steroids 2015; 96:153-63. [PMID: 25676788 DOI: 10.1016/j.steroids.2015.01.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 01/08/2015] [Accepted: 01/28/2015] [Indexed: 01/05/2023]
Abstract
Progesterone is a mammalian hormone that has also been discovered in plants but its physiological function in plants is not explained. Experiments using inhibitors of progesterone synthesis and binding would be useful in studies on the significance of this compound in plants. Until now, trilostane and mifepristone have been used in medical sciences as progesterone biosynthesis and binding inhibitors, respectively. We tested these synthetic steroids for the first time in plants and found that they reduced the content of progesterone in wheat. The aim of further experiments was to answer whether the potential disturbances in the production/binding of progesterone, influence resistance to environmental stress (drought) and the development of wheat. Inhibitors and progesterone were applied to plants via roots in a concentration of 0.25-0.5mg/l water. Both inhibitors lowered the activity of CO2 binding enzyme (Rubisco) in wheat exposed to drought stress and trilostane additionally lowered the chlorophyll content. However, trilostane-treated plants were rescued by treatment with exogenous progesterone. The inhibitors also modulated the development of winter wheat, which indicated the significance of steroid regulators and their receptors in this process. In this study, in addition to progesterone and its inhibitors, brassinosteroid (24-epibrassinolide) and an inhibitor of biosynthesis of brassinosteroids were also applied. Mifepristone inhibited the generative development of wheat (like 24-epibrassinolide), while trilostane (like progesterone and an inhibitor of biosynthesis of brassinosteroids) stimulated the development. We propose a model of steroid-induced regulation of the development of winter wheat, where brassinosteroids act as inhibitors of generative development, while progesterone or other pregnane derivatives act as stimulators.
Collapse
Affiliation(s)
- Anna Janeczko
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland.
| | - Jana Oklestkova
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Ondrej Novak
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | | | - Zuzanna Snaczke
- Department of Plant Physiology, University of Agriculture in Krakow, Podłużna 3, 30-239 Krakow, Poland
| | - Ewa Pociecha
- Department of Plant Physiology, University of Agriculture in Krakow, Podłużna 3, 30-239 Krakow, Poland
| |
Collapse
|
14
|
Karataş I, Öztürk L, Demir Y, Unlükara A, Kurunç A, Düzdemir O. Alterations in antioxidant enzyme activities and proline content in pea leaves under long-term drought stress. Toxicol Ind Health 2014; 30:693-700. [PMID: 23047611 DOI: 10.1177/0748233712462471] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
The effects of long-term drought stress on chlorophyll, proline, protein and hydrogen peroxide (H2O2) contents, malondialdehyde (MDA) in terms of lipid peroxidation and on the changes in the activities of antioxidant enzymes such as superoxide dismutase (SOD, EC 1.15.1.1), ascorbate peroxidase (APX, EC 1.11.1.11), catalase (CAT, EC 1.11.1.6) and peroxidase (POX; EC 1.11.1.7) in the leaves of pea (Pisum sativum L.) were studied in field conditions. Chlorophyll and protein contents in leaves decreased significantly with increased drought stress. The proline content increased markedly under water deficit. MDA amounts were elevated as a result of water shortage, whereas H(2)O(2) content changed slightly in pea leaves exposed to drought stress. Drought stress markedly enhanced the activities of SOD, CAT and POX but slightly changed the activity of APX. We conclude that in field conditions, long-term water shortage increased the susceptibility to drought in peas.
Collapse
Affiliation(s)
- Ilhami Karataş
- Faculty of Science and Arts, Department of Biology, Gaziosmanpaşa University, Tokat, Turkey
| | - Lokman Öztürk
- Faculty of Science and Arts, Department of Biology, Gaziosmanpaşa University, Tokat, Turkey
| | - Yavuz Demir
- Faculty of Education, Department of Biology, Ataturk University, Erzurum, Turkey
| | - Ali Unlükara
- Faculty of Agriculture, Department of Agricultural Structures and Irrigation, Erciyes University, Kayseri, Turkey
| | - Ahmet Kurunç
- Faculty of Agriculture, Department of Agricultural Structures and Irrigation, Akdeniz University, Antalya, Turkey
| | - Oral Düzdemir
- Faculty of Science, Department of Biology, Karatekin University, Çankırı, Turkey
| |
Collapse
|
15
|
Janeczko A, Oklešťková J, Siwek A, Dziurka M, Pociecha E, Kocurek M, Novák O. Endogenous progesterone and its cellular binding sites in wheat exposed to drought stress. J Steroid Biochem Mol Biol 2013; 138:384-94. [PMID: 23973943 DOI: 10.1016/j.jsbmb.2013.07.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 07/24/2013] [Accepted: 07/29/2013] [Indexed: 12/24/2022]
Abstract
Progesterone is a basic hormone that regulates the metabolism in mammals. The presence of this compound has also been found in certain plants. It is believed that progesterone can regulate growth processes and resistance to stress, however, its precise role in plants remains unknown. The research conducted in this study was aimed at analyzing the content of endogenous progesterone and its cellular binding sites in the leaves of spring wheat exposed to drought. Changes were studied in two cultivars of wheat - a cultivar sensitive to drought (Katoda) and tolerant cultivar (Monsun). Plants had undergone periodic droughts during the seedling stage or in the phase of heading. The occurrence of free progesterone as well as its conjugated forms was observed in wheat studied. The amount of progesterone ranged from 0.2 to 5.8pmolgFW(-1) and was dependent on the cultivar, age of the plants, stage of development and fluctuated as a result of the exposure to drought. Cv. Katoda responded to a water deficit by lowering the amount of progesterone and cv. Monsun by increasing its level. Progesterone in plants grown in limited water conditions occurred primarily in a free form. While in the optimal watering conditions, some of its pool was found in the form of conjugates. In the spring wheat the occurrence of binding sites for progesterone was detected in cell membranes, cytoplasm and nuclei in the range of 10-36fmol/mg of protein. The wheat cultivars tested, Monsun and Katoda, differ in their concentration of cellular binding sites for progesterone. This number varied in the individual fractions during different stages of plant development and due to the effect of drought stress. The number of binding sites for progesterone located in the membrane fraction of seedlings and flag leaves increased significantly under drought in the cv. Katoda (35-46%), but did not change in the cv. Monsun. Whereas the number of cytoplasmic progesterone binding sites increased during the drought in the cv. Monsun (about 50%), they did not change in the cv. Katoda. Changes in the amount of progesterone and its binding sites in the cell under the influence of drought were then different depending on whether the cultivar was tolerant or sensitive to drought. The possibility of utilizing these changes as markers of drought resistance is discussed. The results obtained suggest that progesterone is a part of wheat response to stress factors (drought).
Collapse
Affiliation(s)
- Anna Janeczko
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland.
| | | | | | | | | | | | | |
Collapse
|
16
|
Abstract
AbstractThe aim of the present studies was to assess the possibility of compensating the negative effects of drought stress on gaseous exchange and efficiency of photosystem II in soybean seedlings by application of the androgen — androstenedione. Androstenedione (0.25 mg dm−3) was applied via presowing seed soaking (12 h). Control seeds were untreated with steroid. Plants were cultured in pots. On the 12th day of growth, the plants were watered for the last time. Drought symptoms occurred during the next 10 days. On the 22nd day of growth, leaf gaseous exchange and PSII measurements were taken. Afterwards the plants were watered. Two days later measurements were taken again. Androstenedione improved the intensity of leaf net photosynthesis. The effect of androstenedione was manifested during the rehydration of plants that have undergone a period of drought. An increase in net photosynthesis intensity was accompanied by higher transpiration. Possible mechanisms of androstenedione action — effect on aquaporin functionality and membrane stability — are discussed. The significance of ethanol and DMSO (solvents of steroid) in experiments on the physiological activity of androstenedione is also considered.
Collapse
|
17
|
Erdal S. Androsterone-induced molecular and physiological changes in maize seedlings in response to chilling stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2012; 57:1-7. [PMID: 22634365 DOI: 10.1016/j.plaphy.2012.04.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 04/25/2012] [Indexed: 06/01/2023]
Abstract
The aim of study was to elucidate the influence of foliar sprays of androsterone in alleviating detrimental effects of chilling stress in maize seedlings. Eleven-days-old maize seedlings were treated with 10(-9) mol L(-1) androsterone and then transferred to a chamber with temperature of 10/7 °C (day/night) for 3 days. The stress injury was measured in terms of increase in electrolyte leakage, superoxide production and hydrogen peroxide level, and decrease in chlorophyll content. Androsterone application mitigated significantly the chilling-induced stress injury. Under chilling stress, the oxidative damage which was measured as malondialdehyde content was lesser in androsterone-applied seedlings that were associated with greater activities of superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (POX), ascorbate peroxidase (APX) and glutathione reductase (GR). Moreover, SOD, POX and APX isozymes exhibited a strong correlation with changes in their activities. Androsterone application enhanced the level of antioxidant compounds like ascorbic acid, glutathione, proline and carotenoid as well as activities of antioxidant enzymes. Similarly, while androsterone treatment increased total antioxidant status, it reduced total oxidant status relative to chilling-stressed seedlings alone. Soluble protein profile was significantly changed by only chilling stress and chilling stress plus androsterone treatment, as well. According to these findings, it is possible to say that androsterone could be used to alleviate the damaging effects of chilling stress by improving antioxidative system in maize seedlings. This is the first study elucidating the effects of androsterone on resistance to chilling stress of plants.
Collapse
Affiliation(s)
- Serkan Erdal
- Department of Biology, Science Faculty, Ataturk University, 25240 Erzurum, Turkey.
| |
Collapse
|