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Patlavath R, Pillai SE, Gandhi D, Albert S. Cajanus cajan shows multiple novel adaptations in response to regular mechanical stress. JOURNAL OF PLANT RESEARCH 2022; 135:809-821. [PMID: 36241771 DOI: 10.1007/s10265-022-01414-8] [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: 06/27/2022] [Accepted: 09/25/2022] [Indexed: 06/16/2023]
Abstract
Cajanus cajan is one of the least studied crop plants regarding its responses to stress conditions. Regular mechanical stress suppresses plant physiology and growth at the cellular and systemic levels. In the current study, we have explored morphological, physiological, and anatomical adaptations of C. cajan seedlings to regular mechanical stress. Young seedlings of C. cajan were given mechanical stress in the form of touch for fifteen days and observed for various changes. Touch stimuli caused an immediate release of oxidative burst, suppressed plant growth, increased compactness of the stem tissue, and altered the chlorophyll a/b ratio. We have also identified two novel phenotypes; regular touch stimuli affected the nyctinasty movements of the leaves and also affected the root nodule development. We have identified and studied the expression of four putative touch responsive calcium binding genes, TCH gene homologs, in C. cajan using Arabidopsis TCH gene sequences. At an early time point, the expression of two TCH gene homologs (CcTCH1-1 and CcTCH2-2) were found to be upregulated. This study unravels the novel adaptation displayed by C. cajan in response to mechanical stress that can be used as a phenotypic marker for future studies in this plant.
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Affiliation(s)
- Ravinayak Patlavath
- Department of Botany, The M S University of Baroda, 390 002, Vadodara, India.
| | | | - Dhara Gandhi
- Department of Botany, The M S University of Baroda, 390 002, Vadodara, India
| | - Susy Albert
- Department of Botany, The M S University of Baroda, 390 002, Vadodara, India
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2
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Xu C, Wu F, Guo J, Hou S, Wu X, Xin Y. Transcriptomic analysis and physiological characteristics of exogenous naphthylacetic acid application to regulate the healing process of oriental melon grafted onto squash. PeerJ 2022; 10:e13980. [PMID: 36128197 PMCID: PMC9482769 DOI: 10.7717/peerj.13980] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/10/2022] [Indexed: 01/19/2023] Open
Abstract
The plant graft healing process is an intricate development influenced by numerous endogenous and environmental factors. This process involves the histological changes, physiological and biochemical reactions, signal transduction, and hormone exchanges in the grafting junction. Studies have shown that applying exogenous plant growth regulators can effectively promote the graft healing process and improve the quality of grafted plantlets. However, the physiological and molecular mechanism of graft healing formation remains unclear. In our present study, transcriptome changes in the melon and cucurbita genomes were analyzed between control and NAA treatment, and we provided the first view of complex networks to regulate graft healing under exogenous NAA application. The results showed that the exogenous NAA application could accelerate the graft healing process of oriental melon scion grafted onto squash rootstock through histological observation, increase the SOD, POD, PAL, and PPO activities during graft union development and enhance the contents of IAA, GA3, and ZR except for the IL stage. The DEGs were identified in the plant hormone signal-transduction, phenylpropanoid biosynthesis, and phenylalanine metabolism through transcriptome analysis of CK vs. NAA at the IL, CA, and VB stage by KEGG pathway enrichment analysis. Moreover, the exogenous NAA application significantly promoted the expression of genes involved in the hormone signal-transduction pathway, ROS scavenging system, and vascular bundle formation.
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Affiliation(s)
- Chuanqiang Xu
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Fang Wu
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Jieying Guo
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Shuan Hou
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Xiaofang Wu
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Ying Xin
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology (Liaoning), Shenyang, China,Key Laboratory of Protected Horticulture (Shenyang Agricultural University) Ministry of Education, Shenyang, China,College of Horticulture, Shenyang Agricultural University, Shenyang, China
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3
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Rodríguez-Hernández MDC, Garmendia I. Optimum growth and quality of the edible ice plant under saline conditions. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:2686-2692. [PMID: 34693528 DOI: 10.1002/jsfa.11608] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/30/2021] [Accepted: 10/24/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Ice plant is a halophyte, known for its antioxidant activity and for being a highly functional food. It is capable of increasing its contents of health-promoting compounds when subjected to certain stresses such as salinity. The objective of this work was to determine the plant's best growing conditions to achieve both an optimal production of bioactive metabolites and high crop yield. Mesembryanthemum crystallinum were grown under semi-controlled conditions and four saline treatments were applied at: 0, 100, 200 and 300 mmol L-1 sodium chloride (NaCl), respectively. RESULTS The 100 mmol L-1 NaCl treatment induced a slight increase in shoot dry weight (DW) and enhanced the leaf area. At higher salinity levels, however, the shoot biomass decreased. The concentration of starch and total proteins declined as the concentration of salt increased, while the total soluble sugars (TSS) content was lower in 100 and 300 mmol L-1 NaCl treatments. Proline increased in conditions over 100 mmol L-1 NaCl. Furthermore, plants grown with 300 mmol L-1 of NaCl presented the highest values of glutathione, ascorbic acid and vitamin C. Antioxidant enzymes activity and total phenolics increased with the severity of the salinity. CONCLUSION Ice plant accumulates high levels of health-promoting compounds when grown with 300 mmol L-1 NaCl. A high concentration of beneficial compounds, however, is detrimental to the plant's growth. Moreover, 100 mmol L-1 NaCl treatment not only improved the concentration of bioactive and antioxidant compounds but also preserved the crop yield. It could thus be interesting to promote the cultivation of this high nutritional value plant in environments of moderate salinity. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
| | - Idoia Garmendia
- Department of Earth and Environmental Sciences, University of Alicante, Alicante, Spain
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4
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Electrical Signaling of Plants under Abiotic Stressors: Transmission of Stimulus-Specific Information. Int J Mol Sci 2021; 22:ijms221910715. [PMID: 34639056 PMCID: PMC8509212 DOI: 10.3390/ijms221910715] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022] Open
Abstract
Plants have developed complex systems of perception and signaling to adapt to changing environmental conditions. Electrical signaling is one of the most promising candidates for the regulatory mechanisms of the systemic functional response under the local action of various stimuli. Long-distance electrical signals of plants, such as action potential (AP), variation potential (VP), and systemic potential (SP), show specificities to types of inducing stimuli. The systemic response induced by a long-distance electrical signal, representing a change in the activity of a complex of molecular-physiological processes, includes a nonspecific component and a stimulus-specific component. This review discusses possible mechanisms for transmitting information about the nature of the stimulus and the formation of a specific systemic response with the participation of electrical signals induced by various abiotic factors.
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Villada-Bedoya S, Chávez-Ríos JR, Montoya B, Castelán F, Córdoba-Aguilar A, Escobar F, González-Tokman D. Heat shock proteins and antioxidants as mechanisms of response to ivermectin in the dung beetle Euoniticellus intermedius. CHEMOSPHERE 2021; 269:128707. [PMID: 33168281 DOI: 10.1016/j.chemosphere.2020.128707] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/02/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Ivermectin is the most common antiparasitic drug used in livestock in many regions of the world. Its residues are excreted in dung, threatening non-target fauna such as dung beetles, fundamental for cleaning dung in pastures. However, it is unclear which are the physiological mechanisms used by dung beetles to cope with ivermectin. Here we evaluated experimentally the physiological responses of the dung beetle Euoniticellus intermedius to ivermectin-induced stress. We measured metabolic rates, heat shock protein 70 (Hsp70) expression, antioxidant capacity, and oxidative damage in lipids in both males and females exposed to a sublethal dose. Compared to control beetles, ivermectin-treated males and females had increased metabolic rates. Moreover, ivermectin-treated females increased their expression of Hsp70 whereas males increased their antioxidant capacity. No changes in the levels of oxidative damage to lipids were detected for either sex, suggesting a process of hormesis, such that exposure to a moderate concentration of ivermectin could stimulate the action of a protective mechanism against oxidative stress, that differs between sexes. However, it does not exclude the possibility that damage to other biomolecules might have occurred. Sexual differences in physiological responses can be interpreted as the result of hormonal differences or life-history trade-offs that favor different mechanisms in females and males. Hsps and antioxidants are involved in the physiological response of beetles to ivermectin and may be key in providing resistance to this contaminant in target and non-target species, including dung beetles.
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Affiliation(s)
| | - Jesús Ramsés Chávez-Ríos
- Centro Tlaxcala de Biología de La Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico; Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, Mexico.
| | - Bibiana Montoya
- Centro Tlaxcala de Biología de La Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico.
| | - Francisco Castelán
- Centro Tlaxcala de Biología de La Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico; Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, CDMX, Mexico.
| | - Alex Córdoba-Aguilar
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, CDMX, Mexico.
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Somatic Embryogenesis in Centaurium erythraea Rafn-Current Status and Perspectives: A Review. PLANTS 2020; 10:plants10010070. [PMID: 33396285 PMCID: PMC7823438 DOI: 10.3390/plants10010070] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 12/25/2020] [Accepted: 12/29/2020] [Indexed: 12/13/2022]
Abstract
Centaurium erythraea (centaury) is a traditionally used medicinal plant, with a spectrum of secondary metabolites with confirmed healing properties. Centaury is an emerging model in plant developmental biology due to its vigorous regenerative potential and great developmental plasticity when cultured in vitro. Hereby, we review nearly two decades of research on somatic embryogenesis (SE) in centaury. During SE, somatic cells are induced by suitable culture conditions to express their totipotency, acquire embryogenic characteristics, and eventually give rise to somatic embryos. When SE is initiated from centaury root explants, the process occurs spontaneously (on hormone-free medium), directly (without the callusing phase), and the somatic embryos are of unicellular origin. SE from leaf explants has to be induced by plant growth regulators and is indirect (preceded by callusing). Histological observations and culture conditions are compared in these two systems. The changes in antioxidative enzymes were followed during SE from the leaf explants. Special focus is given to the role of arabinogalactan proteins during SE, which were analyzed using a variety of approaches. The newest and preliminary results, including centaury transcriptome, novel potential SE markers, and novel types of arabinogalactan proteins, are discussed as perspectives of centaury research.
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7
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Wang QW, Jia LY, Shi DL, Wang RF, Lu LN, Xie JJ, Sun K, Feng HQ, Li X. Effects of extracellular ATP on local and systemic responses of bean (Phaseolus vulgaris L) leaves to wounding. Biosci Biotechnol Biochem 2018; 83:417-428. [PMID: 30458666 DOI: 10.1080/09168451.2018.1547623] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Wounding increased the extracellular Adenosine 5'-triphosphate (eATP) level of kidney bean leaves. Treatment with wounding or exogenous ATP increased the hydrogen peroxide (H2O2) content, activities of catalase and polyphenol oxidase, and malondialdehyde content in both the treated and systemic leaves. Pre-treatment with ATP-degrading enzyme, apyrase, to the wounded leaves reduced the wound-induced local and systemic increases in H2O2 content, activities of catalase and polyphenol oxidase, and malondialdehyde content. Application of dimethylthiourea (DMTU) and diphenylene iodonium (DPI) to the wounded and ATP-treated leaves, respectively, reduced the wound- and ATP-induced local and systemic increases in H2O2 content, activities of catalase and polyphenol oxidase, and malondialdehyde content. Moreover, the wound- and ATP-induced systemic increases of these physiological parameters were suppressed when DMTU or DPI applied to leaf petiole of the wounded and ATP-treated leaves. These results suggest that eATP at wounded sites could mediate the wound-induced local and systemic responses by H2O2-dependent signal transduction.
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Affiliation(s)
- Qing-Wen Wang
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Lin-Yun Jia
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Dai-Long Shi
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Rong-Fang Wang
- b Institute of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Li-Na Lu
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Jia-Jia Xie
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Kun Sun
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Han-Qing Feng
- a Department of Biology Science, College of Life Sciences , Northwest Normal University , Lanzhou , China
| | - Xin Li
- c Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations , Lanzhou University , Lanzhou , China
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8
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Sun Y, Li Y, Wang M, Wang C, Ling N, Mur LAJ, Shen Q, Guo S. Redox imbalance contributed differently to membrane damage of cucumber leaves under water stress and Fusarium infection. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 274:171-180. [PMID: 30080601 DOI: 10.1016/j.plantsci.2018.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 05/29/2023]
Abstract
Redox-associated events are important in plant development and responses to environmental stresses. In this study, we investigated spatial redox responses of cucumber (Cucumis sativus L.) leaves to biotic stress (Fusarium infection) or abiotic stress (water stress). Plants were grown under hydroponic conditions and either treated with polyethylene glycol to simulate drought or infected with Fusarium oxysporum f. sp. cucumerinum. Both water stress and Fusarium infection restricted cucumber growth and were associated with cellular plasma-membrane damage, reactive oxygen species accumulation, and changes in antioxidants; however, the responses to each stress were distinctive. Under water stress, H2O2 generation at the leaf edge increased 29.7% compared with that at the centre but with Fusarium infection there was a relative 10.4% decrease at the edge. These changes correlated with changes in antioxidants and linked enzyme activities. The key sources of variation in oxidative events were defined by principal component analysis of all of the data and redox balance evaluations. We suggest that these spatial differences under water stress and Fusarium infection arise from discrete regulatory mechanisms, reflecting either developmental effect over the leaf regions or systemic anti-oxidative events occurred following infection.
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Affiliation(s)
- Yuming Sun
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yingrui Li
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Min Wang
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Chengzi Wang
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Ning Ling
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Luis A J Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, SY23 3DA, UK.
| | - Qirong Shen
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Shiwei Guo
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Centre for Organic-based Fertilizers, Jiangsu Collaborative Innovation Centre for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China.
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9
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Drought-mitigating Pseudomonas putida GAP-P45 modulates proline turnover and oxidative status in Arabidopsis thaliana under water stress. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1366-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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10
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Leonowicz G, Trzebuniak KF, Zimak-Piekarczyk P, Ślesak I, Mysliwa-Kurdziel B. The activity of superoxide dismutases (SODs) at the early stages of wheat deetiolation. PLoS One 2018; 13:e0194678. [PMID: 29558520 PMCID: PMC5860746 DOI: 10.1371/journal.pone.0194678] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 03/07/2018] [Indexed: 12/23/2022] Open
Abstract
Unbound tetrapyrroles, i.e. protochlorophyllide (Pchlide), chlorophyllide and chlorophylls, bring the risk of reactive oxygen species (ROS) being generated in the initial stages of angiosperm deetiolation due to inefficient usage of the excitation energy for photosynthetic photochemistry. We analyzed the activity of superoxide dismutases (SODs) in etiolated wheat (Triticum aestivum) leaves and at the beginning of their deetiolation. Mn-SOD and three isoforms of Cu/Zn-SODs were identified both in etiolated and greening leaves of T. aestivum. Two Cu/Zn-SODs, denoted as II and III, were found in plastids. The activity of plastidic Cu/Zn-SOD isoforms as well as that of Mn-SOD correlated with cell aging along a monocot leaf, being the highest at leaf tips. Moreover, a high Pchlide content at leaf tips was observed. No correlation between SOD activity and the accumulation of photoactive Pchlide, i.e. Pchlide bound into ternary Pchlide:Pchlide oxidoreductase:NADPH complexes was found. Cu/Zn-SOD I showed the highest activity at the leaf base. A flash of light induced photoreduction of the photoactive Pchlide to chlorophyllide as well as an increase in all the SODs activity which occurred in a minute time-scale. In the case of seedlings that were deetiolated under continuous light of moderate intensity (100 μmol photons m-2 s-1), only some fluctuations in plastidic Cu/Zn-SODs and Mn-SOD within the first four hours of greening were noticed. The activity of SODs is discussed with respect to the assembly of tetrapyrroles within pigment-protein complexes, monitored by fluorescence spectroscopy at 77 K.
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Affiliation(s)
- Gracjana Leonowicz
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Krakow, Krakow, Poland
| | - Kamil F. Trzebuniak
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Krakow, Krakow, Poland
| | - Paulina Zimak-Piekarczyk
- Department of Stress Biology, The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland
| | - Ireneusz Ślesak
- Department of Stress Biology, The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland
| | - Beata Mysliwa-Kurdziel
- Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Krakow, Krakow, Poland
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11
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Mo Z, Feng G, Su W, Liu Z, Peng F. Transcriptomic Analysis Provides Insights into Grafting Union Development in Pecan (Carya illinoinensis). Genes (Basel) 2018; 9:genes9020071. [PMID: 29401757 PMCID: PMC5852567 DOI: 10.3390/genes9020071] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/18/2018] [Accepted: 01/26/2018] [Indexed: 11/16/2022] Open
Abstract
Pecan (Carya illinoinensis), as a popular nut tree, has been widely planted in China in recent years. Grafting is an important technique for its cultivation. For a successful grafting, graft union development generally involves the formation of callus and vascular bundles at the graft union. To explore the molecular mechanism of graft union development, we applied high throughput RNA sequencing to investigate the transcriptomic profiles of graft union at four timepoints (0 days, 8 days, 15 days, and 30 days) during the pecan grafting process. After de novo assembly, 83,693 unigenes were obtained, and 40,069 of them were annotated. A total of 12,180 differentially expressed genes were identified between by grafting. Genes involved in hormone signaling, cell proliferation, xylem differentiation, cell elongation, secondary cell wall deposition, programmed cell death, and reactive oxygen species (ROS) scavenging showed significant differential expression during the graft union developmental process. In addition, we found that the content of auxin, cytokinin, and gibberellin were accumulated at the graft unions during the grafting process. These results will aid in our understanding of successful grafting in the future.
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Affiliation(s)
- Zhenghai Mo
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Gang Feng
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Wenchuan Su
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Zhuangzhuang Liu
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
| | - Fangren Peng
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China.
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China.
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12
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Wang W, Xia MX, Chen J, Yuan R, Deng FN, Shen FF. Gene Expression Characteristics and Regulation Mechanisms of Superoxide Dismutase and Its Physiological Roles in Plants under Stress. BIOCHEMISTRY (MOSCOW) 2017; 81:465-80. [PMID: 27297897 DOI: 10.1134/s0006297916050047] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Superoxide dismutases (SODs) are key enzymes functioning as the first line of antioxidant defense by virtue of the ability to convert highly reactive superoxide radicals to hydrogen peroxide and molecular oxygen. SOD plays a central role in protecting plants against the toxic effects of reactive oxygen species generated during normal cellular metabolic activity or as a result of various environmental stresses. Our review focuses on the characteristics of expression of SOD genes, the mechanisms regulating expression of SOD genes at transcriptional, posttranscriptional, and translation levels, and their functional role(s) during development and in response to biotic or abiotic stresses. We propose two important research directions: studying SOD at the genome-wide or proteome-wide level, and improving plant stress tolerances by selecting varieties using transgenic technology.
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Affiliation(s)
- W Wang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
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Miszalski Z, Skoczowski A, Silina E, Dymova O, Golovko T, Kornas A, Strzalka K. Photosynthetic activity of vascular bundles in Plantago media leaves. JOURNAL OF PLANT PHYSIOLOGY 2016; 204:36-43. [PMID: 27500555 DOI: 10.1016/j.jplph.2016.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/05/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
Photosynthetic processes in the leaf lamina and midribs of Plantago media were investigated using plants grown in high light (HL) or low light (LL) conditions. The fluorescence parameters, which indicate photochemical/photosynthetic activity, were different in HL and LL grown plants, but no major differences between lamina and midribs were found. An OJIP test (chlorophyll a fluorescence transient induction) of LL grown plants, indicative of the chloroplast electron transport chain, also showed both tissues to be similar. In HL plants, a partial blockage of electron flow between QA (the primary plastoquinone electron acceptor of PSII) and QB (the secondary plastoquinone acceptor of PSII) was found, and this was less visible in midribs. The effective dissipation of quantum energy per reaction center (DI0/RC) was similar in both tissues of HL grown plants, while in the midribs of LL leaves, this process seemed to be less effective. Measurements of 13C discrimination showed that the midrib tissues of LL and HL leaves effectively used β-carboxylation products to accumulate their biomass. Thus, the well protected activity of electron transport in midribs with their limited capacity to fix CO2 from the air may indicate the involvement of this tissue in β-carboxylation, transport or signaling. Carbon accumulated in roots showed a lower 13C discrimination value (more negative) than the values observed in lamina. This could indicate that roots are supplied with assimilates mostly during the light phase of the day cycle with intensive C3 photosynthesis.
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Affiliation(s)
- Zbigniew Miszalski
- Małopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Kraków, Poland; The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland.
| | - Andrzej Skoczowski
- The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland; Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084 Kraków, Poland
| | - Ekaterina Silina
- Institute of Biology, Komi Research Center, Ural Branch, Russian Academy of Sciences, Kommunisticheskaya 28, 167982 Syktyvkar, Russia
| | - Olga Dymova
- Institute of Biology, Komi Research Center, Ural Branch, Russian Academy of Sciences, Kommunisticheskaya 28, 167982 Syktyvkar, Russia
| | - Tamara Golovko
- Institute of Biology, Komi Research Center, Ural Branch, Russian Academy of Sciences, Kommunisticheskaya 28, 167982 Syktyvkar, Russia
| | - Andrzej Kornas
- Institute of Biology, Pedagogical University of Cracow, Podchorążych 2, 30-084 Kraków, Poland.
| | - Kazimierz Strzalka
- Department of Plant Physiology, Faculty and Biochemistry, Faculty of Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
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Kuźniak E, Kornas A, Kaźmierczak A, Rozpądek P, Nosek M, Kocurek M, Zellnig G, Müller M, Miszalski Z. Photosynthesis-related characteristics of the midrib and the interveinal lamina in leaves of the C3-CAM intermediate plant Mesembryanthemum crystallinum. ANNALS OF BOTANY 2016; 117:1141-51. [PMID: 27091507 PMCID: PMC4904173 DOI: 10.1093/aob/mcw049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 02/01/2016] [Indexed: 05/12/2023]
Abstract
BACKGROUND AND AIMS Leaf veins are usually encircled by specialized bundle sheath cells. In C4 plants, they play an important role in CO2 assimilation, and the photosynthetic activity is compartmentalized between the mesophyll and the bundle sheath. In C3 and CAM (Crassulacean acid metabolism) plants, the photosynthetic activity is generally attributed to the leaf mesophyll cells, and the vascular parenchymal cells are rarely considered for their role in photosynthesis. Recent studies demonstrate that enzymes required for C4 photosynthesis are also active in the veins of C3 plants, and their vascular system contains photosynthetically competent parenchyma cells. However, our understanding of photosynthesis in veins of C3 and CAM plants still remains insufficient. Here spatial analysis of photosynthesis-related properties were applied to the midrib and the interveinal lamina cells in leaves of Mesembryanthemum crystallinum, a C3-CAM intermediate plant. METHODS The midrib anatomy as well as chloroplast structure and chlorophyll fluorescence, diurnal gas exchange profiles, the immunoblot patterns of PEPC (phosphoenolpyruvate carboxylase) and RubisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase), H2O2 localization and antioxidant enzyme activities were compared in the midrib and in the interveinal mesophyll cells in leaves of C3 and CAM plants. KEY RESULTS Leaf midribs were structurally competent to perform photosynthesis in C3 and CAM plants. The midrib chloroplasts resembled those in the bundle sheath cells of C4 plants and were characterized by limited photosynthetic activity. CONCLUSIONS The metabolic roles of midrib chloroplasts differ in C3 and CAM plants. It is suggested that in leaves of C3 plants the midrib chloroplasts could be involved in the supply of CO2 for carboxylation, and in CAM plants they could provide malate to different metabolic processes and mediate H2O2 signalling.
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Affiliation(s)
- Elżbieta Kuźniak
- Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Łódź, Poland
| | - Andrzej Kornas
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland
| | - Andrzej Kaźmierczak
- Department of Cytophysiology, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Łódź, Poland
| | - Piotr Rozpądek
- Institute of Environmental Science, Jagiellonian University, Gronostajowa 7a, 30-387 Kraków, Poland, Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
| | - Michał Nosek
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland
| | - Maciej Kocurek
- Institute of Biology, Jan Kochanowski University, Świętokrzyska 15, 25-406 Kielce, Poland
| | - Günther Zellnig
- Institute of Plant Sciences, University of Graz, Schubertstrasse 51, A-8010 Graz, Austria and
| | - Maria Müller
- Institute of Plant Sciences, University of Graz, Schubertstrasse 51, A-8010 Graz, Austria and
| | - Zbigniew Miszalski
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland, Małopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Kraków, Poland
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15
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Li X, Hao C, Zhong J, Liu F, Cai J, Wang X, Zhou Q, Dai T, Cao W, Jiang D. Mechano-stimulated modifications in the chloroplast antioxidant system and proteome changes are associated with cold response in wheat. BMC PLANT BIOLOGY 2015; 15:219. [PMID: 26362323 PMCID: PMC4566287 DOI: 10.1186/s12870-015-0610-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/09/2015] [Indexed: 05/03/2023]
Abstract
BACKGROUND Mechanical wounding can cause morphological and developmental changes in plants, which may affect the responses to abiotic stresses. However, the mechano-stimulation triggered regulation network remains elusive. Here, the mechano-stimulation was applied at two different times during the growth period of wheat before exposing the plants to cold stress (5.6 °C lower temperature than the ambient temperature, viz., 5.0 °C) at the jointing stage. RESULTS Results showed that mechano-stimulation at the Zadoks growth stage 26 activated the antioxidant system, and substantially, maintained the homeostasis of reactive oxygen species. In turn, the stimulation improved the electron transport and photosynthetic rate of wheat plants exposed to cold stress at the jointing stage. Proteomic and transcriptional analyses revealed that the oxidative stress defense, ATP synthesis, and photosynthesis-related proteins and genes were similarly modulated by mechano-stimulation and the cold stress. CONCLUSIONS It was concluded that mechano-stimulated modifications of the chloroplast antioxidant system and proteome changes are related to cold tolerance in wheat. The findings might provide deeper insights into roles of reactive oxygen species in mechano-stimulated cold tolerance of photosynthetic apparatus, and be helpful to explore novel approaches to mitigate the impacts of low temperature occurring at critical developmental stages.
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Affiliation(s)
- Xiangnan Li
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
- Faculty of Science, Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegaard Allé 13, DK-2630, Taastrup, Denmark.
| | - Chenglong Hao
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Jianwen Zhong
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Fulai Liu
- Faculty of Science, Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegaard Allé 13, DK-2630, Taastrup, Denmark.
| | - Jian Cai
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Xiao Wang
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Qin Zhou
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Tingbo Dai
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Weixing Cao
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Dong Jiang
- National Engineering and Technology Center for Information Agriculture / Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
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16
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Nosek M, Rozpądek P, Kornaś A, Kuźniak E, Schmitt A, Miszalski Z. Veinal-mesophyll interaction under biotic stress. JOURNAL OF PLANT PHYSIOLOGY 2015; 185:52-56. [PMID: 26276405 DOI: 10.1016/j.jplph.2015.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 06/11/2015] [Indexed: 06/04/2023]
Abstract
According to microscopic observations, germinating hyphae of Botrytis cinerea, though easily penetrating Mesembryanthemum crystallinum mesophyll tissue, are limited in growth in mid-ribs and only occasionally reach vascular bundles. In mid-ribs of C3 and CAM leaves, we found significantly lower rbcL (large RubisCO subunit) abundance. Moreover, in CAM leaves, minute transcript contents for pepc1 (phosphoenolpyruvate carboxylase) and nadpme1 (malic enzyme) genes found in the mid-ribs suggest that they perform β-carboxylation at a low rate. The gene of the main H2O2-scavenging enzyme, catL (catalase), showed lower expression in C3 mid-rib parts in comparison to mesophyll. This allows maintenance of higher H2O2 quantities in mid-rib parts. In C3 leaves, pathogen infection does not impact photosynthesis. However, in CAM plants, the expression profiles of rbcL and nadpme1 were similar under biotic stress, with transcript down-regulation in mid-ribs and up-regulation in mesophyll (however, in case of rbcL not significant). After B. cinerea infection in C3 plants, transcripts for both antioxidative proteins strongly increased in mid-ribs, but not in mesophyll. In infected CAM plants, a significant transcript increase in the mesophyll was parallel to its decrease in the mid-rib region (however, in the case of catL this was not significant). Pathogen infection modified the expression of carbon and ROS metabolism genes in mid-ribs and mesophyll, resulting in the establishment of successful leaf defense.
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Affiliation(s)
- Michał Nosek
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland
| | - Piotr Rozpądek
- Institute of Environmental Science, Jagiellonian University, Gronostajowa 7a, 30-387 Kraków, Poland; Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
| | - Andrzej Kornaś
- Institute of Biology, Pedagogical University, Podchorążych 2, 30-084 Kraków, Poland
| | - Elżbieta Kuźniak
- Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Łódź, Poland
| | - Annegret Schmitt
- Julius Kühn Institute, Federal Research Institute for Cultivated Plants (JKI), Heinrichstraße 243, D-64287 Darmstadt, Germany
| | - Zbigniew Miszalski
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland; Małopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7a, 30-387 Kraków, Poland
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17
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Irisarri P, Binczycki P, Errea P, Martens HJ, Pina A. Oxidative stress associated with rootstock-scion interactions in pear/quince combinations during early stages of graft development. JOURNAL OF PLANT PHYSIOLOGY 2015; 176:25-35. [PMID: 25543953 DOI: 10.1016/j.jplph.2014.10.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/10/2014] [Accepted: 10/12/2014] [Indexed: 05/21/2023]
Abstract
Exposing a plant to stress situations, such as grafting, generally triggers antioxidant defense systems. In fruit tree grafting, quince (Cydonia oblonga) is widely used as a rootstock for pear (Pyrus communis L.), but several economically important pear cultivars are incompatible with available quince rootstocks. In this study, grafts were established using an in vitro callus graft system mimicking the events taking place in fruit trees. In vitro grown callus from pear [P. communis L. cv. 'Conference' (Co) and cv. 'William' (Wi)] and quince (C. oblonga Mill. clone 'BA29') was used to establish the compatible homografts 'Co/Co', 'Wi/Wi' and 'BA29/BA29', the compatible heterograft 'Co/BA29' and the incompatible heterograft 'Wi/BA29'. The main objective was to determine whether specific isoforms of genes involved in oxidative stress [superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT)] are differentially expressed at the graft interface from compatible and incompatible unions throughout 3 weeks after grafting. Reactive oxygen species (ROS) levels and programmed cell death were also evaluated in the course of graft development. Genes differentially expressed between compatible and incompatible heterografts were identified. Transcript levels of six antioxidant genes (SOD1, SOD3, APX3, APX6, CAT1 and CAT3) were down-regulated 10 days after grafting (DAG) in the incompatible heterograft in comparison to the compatible one. Likewise, SOD enzymatic activities were significantly higher at 1 and 10 days after wounding in the compatible cultivar 'Co' than in the incompatible one 'Wi'. These findings, together with live cell imaging of ROS-specific probes, ultrastructural mitochondrial changes and DNA fragmentation related to apoptotic processes, give indications that within incompatible rootstock/scion interfaces, either the level of ROS is increased or there is a less efficient detoxification system.
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Affiliation(s)
- Patricia Irisarri
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Av Montañana 930, 50059, Zaragoza, Spain
| | - Piotr Binczycki
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - Pilar Errea
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Av Montañana 930, 50059, Zaragoza, Spain
| | - Helle Juel Martens
- Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - Ana Pina
- Unidad de Hortofruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Av Montañana 930, 50059, Zaragoza, Spain.
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18
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Kazemi-Shahandashti SS, Maali-Amiri R, Zeinali H, Khazaei M, Talei A, Ramezanpour SS. Effect of short-term cold stress on oxidative damage and transcript accumulation of defense-related genes in chickpea seedlings. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:1106-1116. [PMID: 24972025 DOI: 10.1016/j.jplph.2014.03.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 03/20/2014] [Accepted: 03/23/2014] [Indexed: 05/28/2023]
Abstract
Cold stress affects many plant physiological and biochemical components and induces cascades of alterations in metabolic pathways, amongst them the membrane fatty acid compositions, the activity of antioxidative enzymes and the regulation of gene expression. The present work aimed to characterize the changes of some of these factors in both cold acclimated (CA) and non-acclimated (NA) plants of chickpea (Cicer arietinum L.) to identify the role of the acclimation process in adjusting plant responses to severe cold stress. The results showed an increase in the unsaturated fatty acids (UFAs) ratio compared to saturated fatty acids, which was more obvious in CA plants. Defense enzymes had an important role in CA plants to create greater cold tolerance compared to NA ones in the cases of superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (GPX) and lipoxygenase (LOX) activities. During cold stress, a high transcription level of CaCAT and CaSOD genes was detected in CA plants, but a low transcription of CaLOX gene was observed in CA plants compared to NA plants, which might have prevented the decline of UFAs (confirmed by double bond index (DBI) data). Moreover, the transcription level of the Carubisco gene, as an energy producing agent, was higher in CA plants than in NA plants and the transcription of the Catubulin gene, as a crucial substance of cell cytoskeleton, showed a decreasing trend in both CA and NA plants, but this decline was greater in NA plants. These responses showed the possible targets of cold stress as chloroplast and signal transduction to balance stress programs. The above results indicate the crucial role of FA compositions in creating cold tolerance in susceptible chickpea plants with possible responsive components and the possible interactions in protein and transcript levels even in facing extreme cold stress.
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Affiliation(s)
- Seyyedeh-Sanam Kazemi-Shahandashti
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Reza Maali-Amiri
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran.
| | - Hassan Zeinali
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Mona Khazaei
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Alireza Talei
- Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, 31587-77871, Karaj, Iran
| | - Seyyedeh-Sanaz Ramezanpour
- Department of Plant Breeding and Biotechnology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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19
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Ecological Importance of Insects in Selenium Biogenic Cycling. INTERNATIONAL JOURNAL OF ECOLOGY 2014. [DOI: 10.1155/2014/835636] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Selenium is an essential trace element for animal and human beings. Despite the importance of insects in most ecosystems and their significant contribution to the biological cycling of trace elements due to high abundance, population productivity, and diverse ecosystem functions, surprisingly little information is available on selenium bioaccumulation by these arthropods. This review considers selenium essentiality and toxicity to insects as well as insects’ contribution to selenium trophic transfer through the food chains. Data on Se accumulation by insects of the Dniester River Valley with no anthropogenic Se loading reveal typically low Se content in necrophagous insects compared to predators and herbivores and seasonal variations in Se accumulation.
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20
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Skyba M, Petijová L, Košuth J, Koleva DP, Ganeva TG, Kapchina-Toteva VM, Cellárová E. Oxidative stress and antioxidant response in Hypericum perforatum L. plants subjected to low temperature treatment. JOURNAL OF PLANT PHYSIOLOGY 2012; 169:955-64. [PMID: 22575055 DOI: 10.1016/j.jplph.2012.02.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 02/20/2012] [Accepted: 02/21/2012] [Indexed: 05/25/2023]
Abstract
Extreme low temperatures cause plants multiple stresses, among which oxidative stress is presumed to be the major component affecting the resultant recovery rate. Plants of Hypericum perforatum L., which are known especially for the photodynamic activities of hypericins capable of producing reactive oxygen species under exposure to visible light, were observed to display a substantial increase and persistence in active oxygen production at least two months after recovery from cryogenic treatment. In an effort to uncover the causative mechanism, the individual contributions of wounding during explant isolation, dehydration and cold were examined by means of antioxidant profiling. The investigation revealed activation of genes coding for enzymatic antioxidant catalase and superoxide dismutase at both the transcript and protein levels. Interestingly, plants responded more to wounding than to either low-temperature associated stressor, presumably due to tissue damage. Furthermore, superoxide dismutase zymograms showed the Cu/Zn isoforms as the most responsive, directing the ROS production particularly to chloroplasts. Transmission electron microscopy revealed chloroplasts as damaged structures with substantial thylakoid ruptures.
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Affiliation(s)
- Matúš Skyba
- Pavol Jozef Šafárik University in Košice, Faculty of Science, Institute of Biology and Ecology, Mánesova 23, 04154 Košice, Slovakia
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21
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Maricle BR. Changes in Chlorophyll Content and Antioxidant Capacity During Dark to Light Transitions in Etiolated Seedlings: Comparisons of Species and Units of Enzyme Activity. ACTA ACUST UNITED AC 2010. [DOI: 10.1660/062.113.0304] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Brian R. Maricle
- Department of Biological Sciences, Fort Hays State University, Hays, Kansas 67601-4099
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22
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Golubkina N, Skriabin K. Anomalous accumulation of selenium by genetically modified potato, stable to Colorado beetle. J Food Compost Anal 2010. [DOI: 10.1016/j.jfca.2009.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Mohapatra S, Minocha R, Long S, Minocha SC. Putrescine overproduction negatively impacts the oxidative state of poplar cells in culture. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2009; 47:262-271. [PMID: 19136266 DOI: 10.1016/j.plaphy.2008.12.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2008] [Revised: 12/07/2008] [Accepted: 12/08/2008] [Indexed: 05/27/2023]
Abstract
While polyamines (PAs) have been suggested to protect cells against Reactive Oxygen Species (ROS), their catabolism is known to generate ROS. We compared the activities of several enzymes and cellular metabolites involved in the ROS scavenging pathways in two isogenic cell lines of poplar (Populus nigraxmaximowiczii) differing in their PA contents. Whereas the control cell line was transformed with beta-glucuronidase (GUS), the other, called HP (High Putrescine), was transformed with a mouse ornithine decarboxylase (mODC) gene. The expression of mODC resulted in several-fold increased production of putrescine as well its enhanced catabolism. The two cell lines followed a similar trend of growth over the seven-day culture cycle, but the HP cells had elevated levels of soluble proteins. Accumulation of H(2)O(2) was higher in the HP cells than the control cells, and so were the activities of glutathione reductase and monodehydroascorbate reductase; the activity of ascorbate peroxidase was lower in the former. The contents of reduced glutathione and glutamate were significantly lower in the HP cells but proline was higher on some days of analysis. There was a small difference in mitochondrial activity between the two cell lines, and the HP cells showed increased membrane damage. In the HP cells, increased accumulation of Ca was concomitant with lower accumulation of K. We conclude that, while increased putrescine accumulation may have a protective role against ROS in plants, enhanced turnover of putrescine actually can make them vulnerable to increased oxidative damage.
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Affiliation(s)
- Sridev Mohapatra
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03824, USA
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Chehab EW, Eich E, Braam J. Thigmomorphogenesis: a complex plant response to mechano-stimulation. JOURNAL OF EXPERIMENTAL BOTANY 2009; 60:43-56. [PMID: 19088336 DOI: 10.1093/jxb/ern315] [Citation(s) in RCA: 141] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
In nature, plants are challenged with hurricane winds, monsoon rains, and herbivory attacks, in addition to many other harsh mechanical perturbations that can threaten plant survival. As a result, over many years of evolution, plants have developed very sensitive mechanisms through which they can perceive and respond to even subtle stimuli, like touch. Some plants respond behaviourally to the touch stimulus within seconds, while others show morphogenetic alterations over long periods of time, ranging from days to weeks. Various signalling molecules and phytohormones, including intracellular calcium, jasmonates, ethylene, abscisic acid, auxin, brassinosteroids, nitric oxide, and reactive oxygen species, have been implicated in touch responses. Many genes are induced following touch. These genes encode proteins involved in various cellular processes including calcium sensing, cell wall modifications, and defence. Twenty-three per cent of these up-regulated genes contain a recently identified promoter element involved in the rapid induction in transcript levels following mechanical perturbations. The employment of various genetic, biochemical, and molecular tools may enable elucidation of the mechanisms through which plants perceive mechano-stimuli and transduce the signals intracellularly to induce appropriate responses.
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Affiliation(s)
- E Wassim Chehab
- Rice University, Biochemistry and Cell Biology, 6100 Main St. Houston, TX 77005, USA
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