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Cakmak I, Rengel Z. Potassium may mitigate drought stress by increasing stem carbohydrates and their mobilization into grains. JOURNAL OF PLANT PHYSIOLOGY 2024; 303:154325. [PMID: 39142140 DOI: 10.1016/j.jplph.2024.154325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 07/26/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024]
Abstract
Potassium (K) deficiency occurs commonly in crop plants. Optimal K nutrition is particularly important when plants are exposed to stress conditions (especially drought and heat) because a cellular demand for K increases. Low K in plant tissues is known to aggravate the effects of drought stress by impairing the osmoregulation process and the photosynthetic carbon metabolism. However, despite numerous publications about the role of K in enhancing tolerance to drought stress in crop plants, our understanding of the major mechanisms underlying the stress-mitigating effects of K is still limited. This paper summarizes and appraises the current knowledge on the major protective effects of K under drought stress, and then proposes a new K-related drought stress-mitigating mechanism, whereby optimal K nutrition may promote partitioning of carbohydrates in stem tissues and subsequent mobilization of these carbohydrates into developing grain under drought stress. The importance of stem reserves of carbohydrates is based on limited photosynthetic capacity during the grain-filling period under drought conditions due to premature leaf senescence as well as due to impaired assimilate transport from leaves to the developing grains. Plants with a high capacity to store large amounts of soluble carbohydrates in stems before anthesis and mobilize them into grain post-anthesis have a high potential to yield well in dry and hot environments. In practice, particular attention needs to be paid to the K nutritional status of plants grown with limited water supply, especially during grain filling. Because K is the mineral nutrient deposited mainly in stem, a special consideration should be given to stems of crop plants in research dealing with the effects of K on yield formation and stress mitigation.
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Affiliation(s)
- Ismail Cakmak
- Sabanci University, Faculty of Engineering and Natural Sciences, 34956 Istanbul, Turkey.
| | - Zed Rengel
- UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Perth WA 6009, Australia
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Shen Y, He F, Zhu J, Zhang H, Wang J, Wang H, Zhan X. Proton-coupled cotransporter involves phenanthrene xylem loading in roots. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145637. [PMID: 33582351 DOI: 10.1016/j.scitotenv.2021.145637] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/31/2021] [Accepted: 01/31/2021] [Indexed: 06/12/2023]
Abstract
The uptake and translocation of polycyclic aromatic hydrocarbons (PAHs) by staple crops have gained much attention. However, the mechanism on phenanthrene xylem loading across plasma membrane is still unclear. In this study, we investigated the concentration dependence of phenanthrene xylem loading and the relationship between phenanthrene concentration and xylem sap pH. The impacts of metabolic inhibitor, temperature, and dissolved oxygen on phenanthrene concentration in xylem sap were observed as well. The Michaelis-Menten equation fits phenanthrene xylem loading across parenchyma cell membrane well and xylem sap pH decreases with the increase in treated phenanthrene concentration. Metabolic inhibitor, low temperature and low dissolved oxygen can suppress phenanthrene loading into xylem sap. The inhibitory rate of sodium vanadate on xylem sap phenanthrene is between 19.76% and 25.82%. Low temperature reduces phenanthrene concentration in xylem sap by 86.68%. Hypoxia (2 mg L-1) inhibits phenanthrene loading into xylem by 78.67%. Therefore, it is indicated that H+/phenanthrene cotransporter is implicated in phenanthrene loading into xylem. Our work offers a valuable model to understand the mechanism of PAH loading into xylem.
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Affiliation(s)
- Yu Shen
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Fang He
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Jiahui Zhu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Huihui Zhang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Jia Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Huiqian Wang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China
| | - Xinhua Zhan
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, PR China.
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Xiao F, Zhao Y, Wang XR, Liu Q, Ran J. Transcriptome Analysis of Needle and Root of Pinus Massoniana in Response to Continuous Drought Stress. PLANTS (BASEL, SWITZERLAND) 2021; 10:769. [PMID: 33919844 PMCID: PMC8070838 DOI: 10.3390/plants10040769] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 05/26/2023]
Abstract
Pinus massoniana Lamb. is an important coniferous tree species in ecological environment construction and sustainable forestry development. The function of gene gradual change and coexpression modules of needle and root parts of P. massoniana under continuous drought stress is unclear. The physiological and transcriptional expression profiles of P. massoniana seedlings from 1a half-sibling progeny during drought stress were measured and analyzed. As a result, under continuous drought conditions, needle peroxidase (POD) activity and proline content continued to increase. The malondialdehyde (MDA) content in roots continuously increased, and the root activity continuously decreased. The needles of P. massoniana seedlings may respond to drought mainly through regulating abscisic acid (ABA) and jasmonic acid (JA) hormone-related pathways. Roots may provide plant growth through fatty acid β-oxidative decomposition, and peroxisomes may contribute to the production of ROS, resulting in the upregulation of the antioxidant defense system. P. massoniana roots and needles may implement the same antioxidant mechanism through the glutathione metabolic pathway. This study provides basic data for identifying the drought response mechanisms of the needles and roots of P. massoniana.
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Affiliation(s)
- Feng Xiao
- College of Forestry, Guizhou University, Guiyang 550025, China; (F.X.); (X.-R.W.); (Q.L.); (J.R.)
- Institute for Forest Resources & Environment of Guizhou, Guizhou University, Guiyang 550025, China
- Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, Guizhou University, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang 550025, China
| | - Yang Zhao
- College of Forestry, Guizhou University, Guiyang 550025, China; (F.X.); (X.-R.W.); (Q.L.); (J.R.)
- Institute for Forest Resources & Environment of Guizhou, Guizhou University, Guiyang 550025, China
- Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, Guizhou University, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang 550025, China
| | - Xiu-Rong Wang
- College of Forestry, Guizhou University, Guiyang 550025, China; (F.X.); (X.-R.W.); (Q.L.); (J.R.)
| | - Qiao Liu
- College of Forestry, Guizhou University, Guiyang 550025, China; (F.X.); (X.-R.W.); (Q.L.); (J.R.)
- Institute for Forest Resources & Environment of Guizhou, Guizhou University, Guiyang 550025, China
- Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, Guizhou University, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang 550025, China
| | - Jie Ran
- College of Forestry, Guizhou University, Guiyang 550025, China; (F.X.); (X.-R.W.); (Q.L.); (J.R.)
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Wiener P, Robert C, Ahbara A, Salavati M, Abebe A, Kebede A, Wragg D, Friedrich J, Vasoya D, Hume DA, Djikeng A, Watson M, Prendergast JGD, Hanotte O, Mwacharo JM, Clark EL. Whole-Genome Sequence Data Suggest Environmental Adaptation of Ethiopian Sheep Populations. Genome Biol Evol 2021; 13:evab014. [PMID: 33501931 PMCID: PMC7955157 DOI: 10.1093/gbe/evab014] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2021] [Indexed: 12/13/2022] Open
Abstract
Great progress has been made over recent years in the identification of selection signatures in the genomes of livestock species. This work has primarily been carried out in commercial breeds for which the dominant selection pressures are associated with artificial selection. As agriculture and food security are likely to be strongly affected by climate change, a better understanding of environment-imposed selection on agricultural species is warranted. Ethiopia is an ideal setting to investigate environmental adaptation in livestock due to its wide variation in geo-climatic characteristics and the extensive genetic and phenotypic variation of its livestock. Here, we identified over three million single nucleotide variants across 12 Ethiopian sheep populations and applied landscape genomics approaches to investigate the association between these variants and environmental variables. Our results suggest that environmental adaptation for precipitation-related variables is stronger than that related to altitude or temperature, consistent with large-scale meta-analyses of selection pressure across species. The set of genes showing association with environmental variables was enriched for genes highly expressed in human blood and nerve tissues. There was also evidence of enrichment for genes associated with high-altitude adaptation although no strong association was identified with hypoxia-inducible-factor (HIF) genes. One of the strongest altitude-related signals was for a collagen gene, consistent with previous studies of high-altitude adaptation. Several altitude-associated genes also showed evidence of adaptation with temperature, suggesting a relationship between responses to these environmental factors. These results provide a foundation to investigate further the effects of climatic variables on small ruminant populations.
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Affiliation(s)
- Pamela Wiener
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Christelle Robert
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - Abulgasim Ahbara
- School of Life Sciences, University of Nottingham, United Kingdom
- Department of Zoology, Misurata University, Misurata, Libya
| | - Mazdak Salavati
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - Ayele Abebe
- Debre Berhan Research Centre, Debre Berhan, Ethiopia
| | - Adebabay Kebede
- Amhara Regional Agricultural Research Institute, Bahir Dar, Ethiopia
- LiveGene, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - David Wragg
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - Juliane Friedrich
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - Deepali Vasoya
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
| | - David A Hume
- Mater Research Institute-University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Appolinaire Djikeng
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - Mick Watson
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - James G D Prendergast
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
| | - Olivier Hanotte
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
- School of Life Sciences, University of Nottingham, United Kingdom
- LiveGene, International Livestock Research Institute, Addis Ababa, Ethiopia
| | - Joram M Mwacharo
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
- Animal and Veterinary Sciences Group, Scotland’s Rural College (SRUC), Midlothian, United Kingdom
- Small Ruminant Genomics, International Centre for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Emily L Clark
- Roslin Institute, University of Edinburgh, Midlothian, United Kingdom
- Centre for Tropical Livestock Genetics and Health (CTLGH), Midlothian, United Kingdom
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Proteomic analyses unraveling water stress response in two Eucalyptus species originating from contrasting environments for aridity. Mol Biol Rep 2020; 47:5191-5205. [PMID: 32564226 DOI: 10.1007/s11033-020-05594-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/17/2020] [Indexed: 12/24/2022]
Abstract
Eucalyptus are widely cultivated in several regions of the world due to their adaptability to different climatic conditions and amenable to tree breeding programs. With changes in environmental conditions pointing to an increase in aridity in many areas of the globe, the demand for genetic materials that adapt to this situation is required. Therefore, the aim of this work was to identify contrasting differences between two Eucalyptus species under water stress through the identification of differentially abundant proteins. For this, total protein extraction was proceeded from leaves of both species maintained at 40 and 80% of field capacity (FC). The 80% FC water regime was considered as the control and the 40% FC, severe water stress. The proteins were separated by 2-DE with subsequent identification of those differentially abundant by liquid nanocromatography coupled to high resolution MS (Q-Exactive). Comparative proteomics allowed to identify four proteins (ATP synthase gamma and alpha, glutamine synthetase and a vacuolar protein) that were more abundant in drought-tolerant species and simultaneously less abundant or unchanged in the drought- sensitive species, an uncharacterized protein found exclusively in plants under drought stress and also 10 proteins (plastid-lipid, ruBisCO activase, ruBisCO, protease ClpA, transketolase, isoflavone reductase, ferredoxin-NADP reductase, malate dehydrogenase, aminobutyrate transaminase and sedoheptulose-1-bisphosphatase) induced exclusively in the drought-tolerant species in response to water stress. These results suggest that such proteins may play a crucial role as potential markers of water stress tolerance through the identification of species-specific proteins, and future targets for genetic engineering.
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Li P, Liu H, Yang H, Pu X, Li C, Huo H, Chu Z, Chang Y, Lin Y, Liu L. Translocation of Drought-Responsive Proteins from the Chloroplasts. Cells 2020; 9:E259. [PMID: 31968705 PMCID: PMC7017212 DOI: 10.3390/cells9010259] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 12/19/2022] Open
Abstract
Some chloroplast proteins are known to serve as messengers to transmit retrograde signals from chloroplasts to the nuclei in response to environmental stresses. However, whether particular chloroplast proteins respond to drought stress and serve as messengers for retrograde signal transduction are unclear. Here, we used isobaric tags for relative and absolute quantitation (iTRAQ) to monitor the proteomic changes in tobacco (Nicotiana benthamiana) treated with drought stress/re-watering. We identified 3936 and 1087 differentially accumulated total leaf and chloroplast proteins, respectively, which were grouped into 16 categories. Among these, one particular category of proteins, that includes carbonic anhydrase 1 (CA1), exhibited a great decline in chloroplasts, but a remarkable increase in leaves under drought stress. The subcellular localizations of CA1 proteins from moss (Physcomitrella patens), Arabidopsis thaliana and rice (Oryza sativa) in P. patens protoplasts consistently showed that CA1 proteins gradually diminished within chloroplasts but increasingly accumulated in the cytosol under osmotic stress treatment, suggesting that they could be translocated from chloroplasts to the cytosol and act as a signal messenger from the chloroplast. Our results thus highlight the potential importance of chloroplast proteins in retrograde signaling pathways and provide a set of candidate proteins for further research.
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Affiliation(s)
- Ping Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China; (P.L.); (H.L.); (C.L.)
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory for Wild Plant Resources, Kunming 650201, China; (H.Y.); (X.P.)
| | - Haoju Liu
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China; (P.L.); (H.L.); (C.L.)
| | - Hong Yang
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory for Wild Plant Resources, Kunming 650201, China; (H.Y.); (X.P.)
| | - Xiaojun Pu
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory for Wild Plant Resources, Kunming 650201, China; (H.Y.); (X.P.)
| | - Chuanhong Li
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China; (P.L.); (H.L.); (C.L.)
| | - Heqiang Huo
- Mid-Florida Research and Education Center, Department of Environmental Horticulture, University of Florida, Miami, FL 32703, USA;
| | - Zhaohui Chu
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory of Agricultural Microbiology, Shandong Agricultural University, Taian 271018, China;
| | - Yuxiao Chang
- Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China;
| | - Yongjun Lin
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan 430070, China; (P.L.); (H.L.); (C.L.)
| | - Li Liu
- Key Laboratory for Economic Plants and Biotechnology, Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory for Wild Plant Resources, Kunming 650201, China; (H.Y.); (X.P.)
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430070, China
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Physiological and Proteomic Analyses Reveal Adaptive Mechanisms of Ryegrass (Annual vs. Perennial) Seedlings to Salt Stress. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9120843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ryegrass has a relatively high salt tolerance and is considered to be a promising species for both foraging and turf purposes in salt-affected soils in China. While annual ryegrass and perennial ryegrass are two different species, they have similar genomes. However, little is known about their physiological and molecular response mechanisms to salinity stress. Here, biomass, chlorophyll fluorescence, and inorganic ion and organic solute content were measured. 2-DE-based proteomic technology was then used to identify the differentially expressed proteins in the salt-treated seedlings. The results showed that salt stress reduced growth and photosynthesis in the seedlings of both species, but much more so in annual ryegrass. With increasing salinity, the Na+ concentration increased while the K+ concentration decreased in both species, and the sugars and proline increased as the primary organic solutes used to cope with osmotic stress. Additionally, proteomic analysis revealed 33 and 37 differentially expressed proteins in annual and perennial ryegrass, respectively. Most of the identified proteins were involved in carbohydrate and energy metabolism, photosynthesis, genetic information processes, amino acid metabolism, stress defense, and protein synthesis and folding. The results suggest that the two-ryegrass species had different physiological and proteomic responses. These findings can provide new insights into physiological mechanisms by which ryegrass species respond to salt stress.
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Zeng W, Peng Y, Zhao X, Wu B, Chen F, Ren B, Zhuang Z, Gao Q, Ding Y. Comparative Proteomics Analysis of the Seedling Root Response of Drought-sensitive and Drought-tolerant Maize Varieties to Drought Stress. Int J Mol Sci 2019; 20:ijms20112793. [PMID: 31181633 PMCID: PMC6600177 DOI: 10.3390/ijms20112793] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 11/16/2022] Open
Abstract
The growth and development of maize roots are closely related to drought tolerance. In order to clarify the molecular mechanisms of drought tolerance between different maize (Zea mays L.) varieties at the protein level, the isobaric tags for relative and absolute quantitation (iTRAQ) quantitative proteomics were used for the comparative analysis of protein expression in the seedling roots of the drought-tolerant Chang 7-2 and drought-sensitive TS141 maize varieties under 20% polyethylene glycol 6000 (PEG 6000)-simulated drought stress. We identified a total of 7723 differentially expressed proteins (DEPs), 1243 were significantly differentially expressed in Chang 7-2 following drought stress, 572 of which were up-regulated and 671 were down-regulated; 419 DEPs were identified in TS141, 172 of which were up-regulated and 247 were down-regulated. In Chang 7-2, the DEPs were associated with ribosome pathway, glycolysis/gluconeogenesis pathway, and amino sugar and nucleotide sugar metabolism. In TS141, the DEPs were associated with metabolic pathway, phenylpropanoid biosynthesis pathway, and starch and sucrose metabolism. Compared with TS141, the higher drought tolerance of Chang 7-2 root system was attributed to a stronger water retention capacity; the synergistic effect of antioxidant enzymes; the strengthen cell wall; the osmotic stabilization of plasma membrane proteins; the effectiveness of recycling amino acid; and an improvement in the degree of lignification. The common mechanisms of the drought stress response between the two varieties included: The promotion of enzymes in the glycolysis/gluconeogenesis pathway; cross-protection against the toxicity of aldehydes and ammonia; maintenance of the cell membrane stability. Based on the proteome sequencing information, the coding region sequences of eight DEP-related genes were analyzed at the mRNA level by quantitative real-time PCR (qRT-PCR). The findings of this study can inform the future breeding of drought-tolerant maize varieties.
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Affiliation(s)
- Wenjing Zeng
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Yunling Peng
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
- Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China.
| | - Xiaoqiang Zhao
- Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China.
| | - Boyang Wu
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Fenqi Chen
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Bin Ren
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Zelong Zhuang
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Qiaohong Gao
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
| | - Yongfu Ding
- College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China.
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Murry R, Kniemeyer O, Krause K, Saiardi A, Kothe E. Crosstalk between Ras and inositol phosphate signaling revealed by lithium action on inositol monophosphatase in Schizophyllum commune. Adv Biol Regul 2019; 72:78-88. [PMID: 30639095 PMCID: PMC6520614 DOI: 10.1016/j.jbior.2019.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 12/31/2018] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
Mushroom forming basidiomycete Schizophyllum commune has been used as a tractable model organism to study fungal sexual development. Ras signaling activation via G-protein-coupled receptors (GPCRs) has been postulated to play a significant role in the mating and development of S. commune. In this study, a crosstalk between Ras signaling and inositol phosphate signaling by inositol monophosphatase (IMPase) is revealed. Constitutively active Ras1 leads to the repression of IMPase transcription and lithium action on IMPase activity is compensated by the induction of IMPase at transcriptome level. Astonishingly, in S. commune lithium induces a considerable shift to inositol phosphate metabolism leading to a massive increase in the level of higher phosphorylated inositol species up to the inositol pyrophosphates. The lithium induced metabolic changes are not observable in a constitutively active Ras1 mutant. In addition to that, proteome profile helps us to elucidate an overview of lithium action to the broad aspect of fungal metabolism and cellular signaling. Taken together, these findings imply a crosstalk between Ras and inositol phosphate signaling.
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Affiliation(s)
- Reyna Murry
- Friedrich Schiller University Jena, Institute of Microbiology, Jena, Germany
| | - Olaf Kniemeyer
- Leibniz Institute for Natural Product Research and Infection Biology - Hans Knöll Institute Jena, Germany
| | - Katrin Krause
- Friedrich Schiller University Jena, Institute of Microbiology, Jena, Germany
| | - Adolfo Saiardi
- Medical Research Council (MRC) Laboratory for Molecular Cell Biology, Department of Biochemistry and Molecular Biology, University College London, London, UK.
| | - Erika Kothe
- Friedrich Schiller University Jena, Institute of Microbiology, Jena, Germany.
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Lin J, Hua X, Peng X, Dong B, Yan X. Germination Responses of Ryegrass (Annual vs. Perennial) Seed to the Interactive Effects of Temperature and Salt-Alkali Stress. FRONTIERS IN PLANT SCIENCE 2018; 9:1458. [PMID: 30356802 PMCID: PMC6189637 DOI: 10.3389/fpls.2018.01458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/12/2018] [Indexed: 05/03/2023]
Abstract
Ryegrass is considered a useful grass species for forage production and turf purposes. Annual ryegrass (Lolium multiflorum Lam.) and perennial ryegrass (Lolium perenne L.)are two species of ryegrass with similar genomes. So far, little information exists concerning their physiological response to salt-alkali stress during germination stage, especially under different temperature regimes. Seeds of ryegrass were germinated at four alternating temperatures (10-20, 15-25, 20-30, and 25-35°C) with salinity (NaCl) and alkalinity (Na2CO3, high pH) stresses. Results showed that optimal germination for both species under stress conditions occurred at higher temperatures (20-30°C for annual ryegrass; 20-30°C and 25-35°C for perennial ryegrass). Germination percentage and germination rate were both inhibited by increasing salinity or alkalinity, particularly higher alkalinities under any temperature. The inhibitory effects of the high salinity on germination were greater at 10-20°C for both species. However, seeds were subjected to more stress at 25-35°C under alkali stress even though the concentration was very low. In addition, both high and low temperatures lead to a markedly decrease in seed germination under alkali stress for perennial ryegrass. Recovery percentage of both species were highest at 400 mM salinity and 25 mM alkalinity under any temperature, especially 10-20°C, and 25-35°C also resulted in lower recovery percentages under both stresses for ryegrass. Moreover, annual ryegrass had a much higher recovery percentage than perennial ryegrass under such stress conditions. These results suggest that salinity stress and alkalinity stress are greatly different, and the salt-alkaline tolerance of ryegrass seeds is greatly affected by the interactions of temperature and salinity-alkalinity.
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Affiliation(s)
- Jixiang Lin
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Harbin, China
- Department of Plant Pathology, North Carolina State University, Raleigh, NC, United States
| | - Xiaoyu Hua
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Harbin, China
| | - Xiaoyuan Peng
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Harbin, China
| | - Bolin Dong
- Department of Plant Pathology, North Carolina State University, Raleigh, NC, United States
| | - Xiufeng Yan
- Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Harbin, China
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