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Wang J, Curson ARJ, Zhou S, Carrión O, Liu J, Vieira AR, Walsham KS, Monaco S, Li CY, Dong QY, Wang Y, Rivera PPL, Wang XD, Zhang M, Hanwell L, Wallace M, Zhu XY, Leão PN, Lea-Smith DJ, Zhang YZ, Zhang XH, Todd JD. Alternative dimethylsulfoniopropionate biosynthesis enzymes in diverse and abundant microorganisms. Nat Microbiol 2024; 9:1979-1992. [PMID: 38862603 PMCID: PMC11306096 DOI: 10.1038/s41564-024-01715-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/29/2024] [Indexed: 06/13/2024]
Abstract
Dimethylsulfoniopropionate (DMSP) is an abundant marine organosulfur compound with roles in stress protection, chemotaxis, nutrient and sulfur cycling and climate regulation. Here we report the discovery of a bifunctional DMSP biosynthesis enzyme, DsyGD, in the transamination pathway of the rhizobacterium Gynuella sunshinyii and some filamentous cyanobacteria not previously known to produce DMSP. DsyGD produces DMSP through its N-terminal DsyG methylthiohydroxybutyrate S-methyltransferase and C-terminal DsyD dimethylsulfoniohydroxybutyrate decarboxylase domains. Phylogenetically distinct DsyG-like proteins, termed DSYE, with methylthiohydroxybutyrate S-methyltransferase activity were found in diverse and environmentally abundant algae, comprising a mix of low, high and previously unknown DMSP producers. Algae containing DSYE, particularly bloom-forming Pelagophyceae species, were globally more abundant DMSP producers than those with previously described DMSP synthesis genes. This work greatly increases the number and diversity of predicted DMSP-producing organisms and highlights the importance of Pelagophyceae and other DSYE-containing algae in global DMSP production and sulfur cycling.
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Affiliation(s)
- Jinyan Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - Andrew R J Curson
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Shun Zhou
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Ornella Carrión
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Ji Liu
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, China
| | - Ana R Vieira
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Matosinhos, Portugal
| | - Keanu S Walsham
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Serena Monaco
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Chun-Yang Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Qing-Yu Dong
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Yu Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Peter Paolo L Rivera
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Xiao-Di Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Min Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Libby Hanwell
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Matthew Wallace
- School of Pharmacy, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Xiao-Yu Zhu
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Pedro N Leão
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Matosinhos, Portugal
| | - David J Lea-Smith
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Yu-Zhong Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China
- State Key Lab of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, China
| | - Xiao-Hua Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China.
- Laboratory for Marine Ecology and Environmental Science, Laoshan Laboratory, Qingdao, China.
| | - Jonathan D Todd
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, and College of Marine Life Sciences, Ocean University of China, Qingdao, China.
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK.
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2
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Hareem M, Danish S, Pervez M, Irshad U, Fahad S, Dawar K, Alharbi SA, Ansari MJ, Datta R. Optimizing chili production in drought stress: combining Zn-quantum dot biochar and proline for improved growth and yield. Sci Rep 2024; 14:6627. [PMID: 38503869 PMCID: PMC10951368 DOI: 10.1038/s41598-024-57204-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/15/2024] [Indexed: 03/21/2024] Open
Abstract
The reduction in crop productivity due to drought stress, is a major concern in agriculture. Drought stress usually disrupts photosynthesis by triggering oxidative stress and generating reactive oxygen species (ROS). The use of zinc-quantum dot biochar (ZQDB) and proline (Pro) can be effective techniques to overcome this issue. Biochar has the potential to improve the water use efficiency while proline can play an imperative role in minimization of adverse impacts of ROS Proline, functioning as an osmotic protector, efficiently mitigates the adverse effects of heavy metals on plants by maintaining cellular structure, scavenging free radicals, and ensuring the stability of cellular integrity. That's why current study explored the impact of ZQDB and proline on chili growth under drought stress. Four treatments, i.e., control, 0.4%ZQDB, 0.1 mM Pro, and 0.4%ZQDB + Pro, were applied in 4 replications following the complete randomized design. Results exhibited that 0.4%ZQDB + Pro caused an increases in chili plant dry weight (29.28%), plant height (28.12%), fruit length (29.20%), fruit girth (59.81%), and fruit yield (55.78%) over control under drought stress. A significant increment in chlorophyll a (18.97%), chlorophyll b (49.02%), and total chlorophyll (26.67%), compared to control under drought stress, confirmed the effectiveness of 0.4%ZQDB + Pro. Furthermore, improvement in leaves N, P, and K concentration over control validated the efficacy of 0.4%ZQDB + Pro against drought stress. In conclusion, 0.4%ZQDB + Pro can mitigate drought stress in chili. More investigations are suggested to declare 0.4%ZQDB + Pro as promising amendment for mitigation of drought stress in other crops as well under changing climatic situations.
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Affiliation(s)
- Misbah Hareem
- Department of Environmental Sciences, Woman University Multan, Multan, Punjab, Pakistan
| | - Subhan Danish
- Department of Soil Science, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Punjab, Pakistan.
| | - Mahnoor Pervez
- Department of Zoology, Lahore College for Women University, Lahore, Pakistan
| | - Usman Irshad
- Department of Environmental Sciences, COMSATS University Islamabad Abbottabad Campus, Abbottabad, Pakistan
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, 23200, Pakistan.
- Department of Natural Sciences, Lebanese American University, Byblos, Lebanon.
| | - Khadim Dawar
- Department of Soil and Environmental Science, The University of Agriculture Peshawar, Peshawar, Pakistan
| | - Sulaiman Ali Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, 11451, Riyadh, Saudi Arabia
| | - Mohammad Javed Ansari
- Department of Botany, Hindu College Moradabad (Mahatma Jyotiba Phule Rohilkhand University Bareilly), Moradabad, India
| | - Rahul Datta
- Department of Geology and Pedology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic.
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3
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Gou C, Huang Q, Rady MM, Wang L, Ihtisham M, El-Awady HH, Seif M, Alazizi EMY, Eid RSM, Yan K, Tahri W, Li J, Desoky ESM, El-Sappah AH. Integrative application of silicon and/or proline improves Sweet corn (Zea mays L. saccharata) production and antioxidant defense system under salt stress condition. Sci Rep 2023; 13:18315. [PMID: 37880216 PMCID: PMC10600099 DOI: 10.1038/s41598-023-45003-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/14/2023] [Indexed: 10/27/2023] Open
Abstract
Silicon (Si) and/or proline (Pro) are natural supplements that are considered to induce plants' stress tolerance against various abiotic stresses. Sweet corn (Zea mays L. saccharata) production is severely afflicted by salinity stress. Therefore, two field tests were conducted to evaluate the potential effects of Si and/or Pro (6mM) used as seed soaking (SS) and/or foliar spray (FS) on Sweet corn plant growth and yield, physio-biochemical attributes, and antioxidant defense systems grown in a saline (EC = 7.14dS m-1) soil. The Si and/or Pro significantly increased growth and yield, photosynthetic pigments, free proline, total soluble sugars (TSS), K+/Na+ratios, relative water content (RWC), membrane stability index (MSI), α-Tocopherol (α-TOC), Ascorbate (AsA), glutathione (GSH), enzymatic antioxidants activities and other anatomical features as compared to controls. In contrast, electrolytes, such as SS and/or FS under salt stress compared to controls (SS and FS using tap water) were significantly decreased. The best results were obtained when SS was combined with FS via Si or Pro. These alterations are brought about by the exogenous application of Si and/or Pro rendering these elements potentially useful in aiding sweet corn plants to acclimate successfully to saline soil.
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Affiliation(s)
- Caiming Gou
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Qiulan Huang
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Mostafa M Rady
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt
| | - Linghui Wang
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Muhammad Ihtisham
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Hamada H El-Awady
- College of Horticulture, Northwest A&F University, Xianyang, 712100, China
| | - Mohamed Seif
- Toxicology and Food Contaminants Department, Food Industries and Nutrition Research Institute, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Esmail M Y Alazizi
- Sichuan University of Science and Engineering, Yibin, 643000, Sichuan, China
| | - Rania S M Eid
- Agricultural Botany Department, Faculty of Agriculture, Benha University, Banha, 13518, Egypt
| | - Kuan Yan
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China
| | - Walid Tahri
- International Faculty of Applied Technology, Yibin University, Yibin, 644000, Sichuan, China
| | - Jia Li
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China.
| | - El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
| | - Ahmed H El-Sappah
- College of Agriculture, Forestry, and Food Engineering, Yibin University, Yibin, Sichuan, China.
- Department of Genetics, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
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4
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Sapakhova Z, Raissova N, Daurov D, Zhapar K, Daurova A, Zhigailov A, Zhambakin K, Shamekova M. Sweet Potato as a Key Crop for Food Security under the Conditions of Global Climate Change: A Review. PLANTS (BASEL, SWITZERLAND) 2023; 12:2516. [PMID: 37447081 DOI: 10.3390/plants12132516] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
Sweet potato is one of the most economically important crops for addressing global food security and climate change issues, especially under conditions of extensive agriculture, such as those found in developing countries. However, osmotic stress negatively impacts the agronomic and economic productivity of sweet potato cultivation by inducing several morphological, physiological, and biochemical changes. Plants employ many signaling pathways to respond to water stress by modifying their growth patterns, activating antioxidants, accumulating suitable solutes and chaperones, and making stress proteins. These physiological, metabolic, and genetic modifications can be employed as the best indicators for choosing drought-tolerant genotypes. The main objective of sweet potato breeding in many regions of the world, especially those affected by drought, is to obtain varieties that combine drought tolerance with high yields. In this regard, the study of the physiological and biochemical features of certain varieties is important for the implementation of drought resistance measures. Adapted genotypes can be selected and improved for particular growing conditions by using suitable tools and drought tolerance-related selection criteria. By regulating genetics in this way, the creation of drought-resistant varieties may become cost-effective for smallholder farmers. This review focuses on the drought tolerance mechanisms of sweet potato, the effects of drought stress on its productivity, its crop management strategies for drought mitigation, traditional and molecular sweet potato breeding methods for drought tolerance, and the use of biotechnological methods to increase the tolerance of sweet potato to drought.
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Affiliation(s)
- Zagipa Sapakhova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Nurgul Raissova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Dias Daurov
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Kuanysh Zhapar
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Ainash Daurova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Andrey Zhigailov
- M. Aitkhozhin Institute of Molecular Biology and Biochemistry, Almaty 050012, Kazakhstan
| | - Kabyl Zhambakin
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
| | - Malika Shamekova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
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5
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Xie X, Gu Y, Wang W, Abbas F, Qin S, Fu S, Mei J, Wang J, Ma D, Wen G, Yang Y, Sharma A, Wang X, Yan D, Zheng B, He Y, Yuan H. Exogenous spermidine improved drought tolerance in Ilex verticillata seedlings. FRONTIERS IN PLANT SCIENCE 2023; 14:1065208. [PMID: 36743484 PMCID: PMC9895825 DOI: 10.3389/fpls.2023.1065208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/09/2023] [Indexed: 06/18/2023]
Abstract
Winterberry (Ilex verticillata (L.) A. Gray) is a recently introduced ornamental tree species in China that has not been closely investigated for its drought resistance. In this study, we used two-year-old cuttings from I. verticillata (L.) A. Gray and two representative varieties derived from it, I. verticillata 'Oosterwijk' and I. verticillata 'Jim Dandy', as materials to investigate how this plant responds to drought stress and whether exogenous spermidine (SPD) can alleviate the negative effects caused by drought stress. The results showed that as the degree of drought stress increased, the leaves of winterberry seedlings became chlorotic, and their edges became dry. Similarly, the relative water content, specific leaf weight, chlorophyll content, leaf nitrogen content, net photosynthetic rate, stomatal conductance and transpiration rate were significantly reduced, whereas the content of malondialdehyde continuously increased with the degree of drought stress. The activities of superoxide dismutase, peroxidase, and catalase increased under moderate drought stress and then decreased under severe drought stress. The levels of soluble sugar and abscisic acid continued to increase, while those of auxin and gibberellic acid decreased. When compared with individual drought stress, an increase in the amount of external SPD clearly alleviated the effect of drought stress on winterberry seedlings. The combined phenotypes and physiological indices of the winterberry leaves under drought stress conditions revealed that the drought resistance of the native species was significantly higher than its two varieties. This finding serves as an important theoretical foundation for the popularization and application of I. verticillata (L.) A. Gray and the two varieties.
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Affiliation(s)
- Xiaoting Xie
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Yujie Gu
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Weili Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Farhat Abbas
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Sini Qin
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Siyi Fu
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Jiaqi Mei
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Jiayan Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Dexuan Ma
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Guangchao Wen
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Ying Yang
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Anket Sharma
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Xiaofei Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Daoliang Yan
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Yi He
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
| | - Huwei Yuan
- State Key Laboratory of Subtropical Silviculture, Zhejiang Agricultural and Forestry University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-based Healthcare Functions, Zhejiang Agricultural and Forestry University, Hangzhou, China
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6
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Ford BA, Ranjit P, Mabbutt BC, Paulsen IT, Shah BS. ProX from marine Synechococcus spp. show a sole preference for glycine-betaine with differential affinity between ecotypes. Environ Microbiol 2022; 24:6071-6085. [PMID: 36054310 PMCID: PMC10087775 DOI: 10.1111/1462-2920.16168] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/09/2022] [Indexed: 01/12/2023]
Abstract
Osmotic stress, caused by high or fluctuating salt concentrations, is a crucial abiotic factor affecting microbial growth in aquatic habitats. Many organisms utilize common responses to osmotic stress, generally requiring active extrusion of toxic inorganic ions and accumulation of compatible solutes to protect cellular machinery. We heterologously expressed and purified predicted osmoprotectant, proline/glycine betaine-binding proteins (ProX) from two phylogenetically distinct Synechococcus spp. MITS9220 and WH8102. Homologues of this protein are conserved only among Prochlorococcus LLIV and Synechococcus clade I, III and CRD1 strains. Our biophysical characterization show Synechococcus ProX exists as a dimer, with specificity solely for glycine betaine but not to other osmoprotectants tested. We discovered that MITS9220_ProX has a 10-fold higher affinity to glycine betaine than WH8102_ProX, which is further elevated (24-fold) in high salt conditions. The stronger affinity and effect of ionic strength on MITS9220_ProX glycine betaine binding but not on WH8102_ProX alludes to a novel regulatory mechanism, providing critical functional insights into the phylogenetic divergence of picocyanobacterial ProX proteins that may be necessary for their ecological success.
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Affiliation(s)
- Benjamin A Ford
- School of Natural Sciences, Macquarie University, Sydney, Australia
| | - Pramita Ranjit
- School of Natural Sciences, Macquarie University, Sydney, Australia
| | | | - Ian T Paulsen
- School of Natural Sciences, Macquarie University, Sydney, Australia.,ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia
| | - Bhumika S Shah
- School of Natural Sciences, Macquarie University, Sydney, Australia.,ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia
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7
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Yeroshkina K, Rossokha Z, Fishchuk L, Gorovenko N. Betaine consumption as a new clinical approach to treatment and prophylaxis of folate-related pathologies. Nutr Rev 2022; 81:716-726. [PMID: 36164833 DOI: 10.1093/nutrit/nuac084] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The most important pathway in the development of folate-related pathologies is an increase in the level of homocysteine (HC). HC, a cytotoxic and neurotoxic amino acid (when its level is ≥12 μmol/L), is 1 of the most widely studied compounds in cardiology, neurobiology, oncology, and embryology for the last 20 years. Given its toxicity, the processes of endogenous detoxification of HC are of particular interest to medicine. To date, the most studied pathway is that of remethylation (the conversion of HC to methionine), with the participation of B12- and B9-dependent methionine synthase. Less studied is remethylation with the participation of the choline derivatives betaine and betaine-HC-S-methyltransferase (BHMT). Therefore, the aim of this review was to conduct a theoretical analysis of available information regarding the contribution of betaine metabolism, its enzyme, and its genetic polymorphism to folate metabolism disturbances, and the development of folate-related pathologies. This review emphasizes the potential clinical significance of 2 factors that can influence the remethylation reaction of HC: the use of betaine and identifying the BHMT gene variants and their impact on the risk for developing certain folate-related pathologies, and treatment options. Moreover, with a high level of methylation of the BHMT gene and in the presence of its low-function variants (eg, rs3733890), it is necessary to use betaine as an additional methyl donor, especially during folate therapy. More clinical research is needed to identify the effects of the different BHMT gene variants on the individual risk for folate-related pathologies to better assess the clinical significance, the need for genetic testing, and betaine consumption.
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Affiliation(s)
- Krystyna Yeroshkina
- State Institution "Reference-Centre for Molecular Diagnostic of Public Health Ministry of Ukraine," Kyiv, Ukraine
| | - Zoia Rossokha
- State Institution "Reference-Centre for Molecular Diagnostic of Public Health Ministry of Ukraine," Kyiv, Ukraine.,State Institute of Genetic and Regenerative Medicine, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
| | - Liliya Fishchuk
- State Institution "Reference-Centre for Molecular Diagnostic of Public Health Ministry of Ukraine," Kyiv, Ukraine.,State Institute of Genetic and Regenerative Medicine, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
| | - Nataliia Gorovenko
- State Institute of Genetic and Regenerative Medicine, National Academy of Medical Sciences of Ukraine, Kyiv, Ukraine
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8
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Righi S, Forti L, Simonini R, Ferrari V, Prevedelli D, Mucci A. Novel Natural Compounds and Their Anatomical Distribution in the Stinging Fireworm Hermodice carunculata (Annelida). Mar Drugs 2022; 20:md20090585. [PMID: 36135774 PMCID: PMC9504318 DOI: 10.3390/md20090585] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Increasing evidence in the field of bioprospection fosters the necessity of studying poorly investigated poisonous marine invertebrates to expand knowledge on animal venom biology. Among marine annelids, amphinomid fireworms are notorious for their bearded trunk equipped with a powerful stinging capacity. Here, a methodological workflow based on analytical chemistry techniques (compound isolation followed by mass spectrometry and spectroscopy analyses) was applied to gain new insights, leading to the identification and structural elucidation of an array of natural products from Mediterranean specimens of Hermodice carunculata. Eight betaine-derived unprecedented compounds, named “carunculines”, were detected, bearing two terminal ammonium groups tri-and disubstituted at the Cα (A, B) and a series of different alkyl chains (I–VIII). The mixture of chemicals was found in all the body parts of H. carunculata, supporting a mechanism of action triggered by their vehiculation inside the dorsal chaetae, and subsequent injection when chaetae break off on contact. Preliminary investigations to understand adaptive features were also performed, showing a trend in carunculine abundance that fits into the evolutionary history of these worms. These findings shed light on the chemical ecology of amphinomids, giving reasons for the success of H. carunculata in benthic environments and providing promising novel metabolites for biotechnological implications.
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Affiliation(s)
- Sara Righi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
- Correspondence:
| | - Luca Forti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Roberto Simonini
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Valentina Ferrari
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Daniela Prevedelli
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Adele Mucci
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
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9
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Sarlak M, Roumiani E, Kheradmand A, Dezfoulian O, Alirezaei M, Raisi A, Davoodi F. Evaluating the effects of betaine on testicular ischemia/reperfusion injury induced by torsion/detorsion in the rat. Andrologia 2022; 54:e14559. [DOI: 10.1111/and.14559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/07/2022] [Accepted: 08/04/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Mohammad Sarlak
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Elham Roumiani
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Arash Kheradmand
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Omid Dezfoulian
- Department of Pathobiology, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Masoud Alirezaei
- Department of Basic Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Abbas Raisi
- Department of Clinical Sciences, Faculty of Veterinary Medicine Lorestan University Khorramabad Iran
| | - Farshid Davoodi
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine Urmia University Urmia Iran
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An NMR-Based Metabolomics Assessment of the Effect of Combinations of Natural Feed Items on Juvenile Red Drum, Sciaenops ocellatus. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10040547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This study evaluated the effects of seven diets composed of natural feed components (chopped fish, shrimp, and squid) alone or in combination on the liver metabolite profile of juvenile red drum (Sciaenops ocellatus) cultured in a 24-tank recirculating aquaculture system over the course of 12 weeks using Nuclear Magnetic Resonance (NMR)-based metabolomics. Experimental diets included fish (F), shrimp (SH), squid (SQ), fish and shrimp (FSH), fish and squid (FSQ), shrimp and squid (SHSQ), fish, shrimp, and squid (FSHSQ). A commercial fishmeal-based pelleted diet was used as a control. Fish were fed isocalorically. Red drum liver samples were collected at five different time points: T0, before the start of the trial (n = 12), and subsequently every 3 weeks over the course of 12 weeks (T3, T6, T9, T12), with n = 9 fish/diet/time point. Polar liver extracts were analyzed by NMR-based metabolomics. Multivariate statistical analyses (PCA, PLS-DA) revealed that red drum fed the F diet had a distinct liver metabolite profile from fish fed the other diets, with those fed SH, SQ and the combination diets displaying greater similarities in their metabolome. Results show that 19 metabolites changed significantly among the different dietary treatments, including amino acids and amino acid derivatives, quaternary amines and methylamines, carbohydrates and phospholipids. Specifically, γ-butyrobetaine, N-formimino-L-glutamate (FIGLU), sarcosine and beta-alanine were among the most discriminating metabolites. Significant correlations were found between metabolites and six growth performance parameters (final body weight, total length, condition factor, liver weight, hepatosomatic index, and eviscerated weight). Metabolites identified in this study constitute potential candidates for supplementation in fish feeds for aquaculture and optimization of existing formulations. Additionally, we identified a quaternary amine, γ-butyrobetaine as a potential biomarker of shrimp consumption in red drum. These results warrant further investigation and biomarker validation and have the potential for broader applicability outside of the aquaculture field in future investigations in wild red drum populations and potentially other carnivorous marine fishes.
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11
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Amelioration Effect of Salicylic Acid Under Salt Stress in Sorghum bicolor L. Appl Biochem Biotechnol 2022; 194:4400-4423. [PMID: 35320507 DOI: 10.1007/s12010-022-03853-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/11/2022] [Indexed: 11/02/2022]
Abstract
Salinity is a major abiotic stress, limiting plant growth and agriculture productivity worldwide. Salicylic acid is known to alleviate the negative effects of salinity. The present study demonstrated the impact of SA on sorghum, a moderately salt-tolerant crop, grown for food, fodder, fiber, and fuel. A screen house experiment was conducted using sorghum genotypes Haryana Jowar HJ 513 and HJ 541 under 4 salt levels (0, 5.0, 7.5, and 10.0 dS m-1 NaCl) and 3 SA (0, 25, and 50 mg dm-3) levels with 12 combinations. The leaves were assayed for electrolyte leakage percentage (ELP), i.e., 88.7 % in HJ 541 and 87.2 % in HJ 513, and osmolyte content. Proline content, total soluble carbohydrate content, and glycine betaine content increased considerably. Photosynthetic rate, transpiration rate, and stomatal conductance declined at higher salt levels. The specific enzymatic activities of SOD, CAT, and POX increased 41.1 %, 122.0 %, and 72.8 %, respectively, in HJ 513 under salt stress. Combinations of salt treatment and SA decreased ELP and enhanced osmolyte concentration, rates of gaseous exchange attributes, and also the antioxidant enzymatic activity in salt-stressed leaves. The study established that the specific activity of antioxidative enzymes is enhanced further by addition of SA which may protect the cells from oxidative damage under salt stress, thus mitigating salt stress and enhancing the yield of sorghum. SA can ameliorate the salt stress in plants by affecting the metabolic or physiological frameworks. SA application is an effective management strategy towards mitigating salt stress in order to meet agricultural production and sustainability.
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12
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Ahmad Lone W, Majeed N, Yaqoob U, John R. Exogenous brassinosteroid and jasmonic acid improve drought tolerance in Brassica rapa L. genotypes by modulating osmolytes, antioxidants and photosynthetic system. PLANT CELL REPORTS 2022; 41:603-617. [PMID: 34374791 DOI: 10.1007/s00299-021-02763-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Exogenously supplied BR and JA help KS101 and KBS3 genotypes of Brassica rapa to alleviate drought stress by modifying osmolyte concentration, levels of antioxidant enzymes and photosynthetic system. Oilseed plants are susceptible to drought stress and a significant loss in yield has been reported during recent decades. Thus, it is imperative to understand the various underlying drought response mechanisms in Brassica oilseed plants to formulate the sustainable strategies to protect the crop yield under water-limiting conditions. Phytohormones play a key role in fine-tuning various regulatory mechanisms for drought stress adaptation in plants, and the present study explores the response of several physiological stress markers by exogenous supplementation of 24-epibrassinolide (EBL) and jasmonic acid (JA) on two genotypes of Brassica rapa, KS101 and KBS3 under drought stress conditions. The exogenous application of BR and JA, separately or in combination, significantly alleviated the drought stress by improving photosynthetic rate, photosynthetic pigments, stomatal conductance, transpiration rate and antioxidant defence. We observed that concentration of different osmolytes increased and membrane damage significantly reduced by the application of BR and JA. The overall activity of antioxidant enzymes POD, CAT, GR, APX and CAT elevated during all the treatments, be it stress alone or in combination with BR and JA, compared to the control. However, we observed that the BR was much better in mitigating the drought stress compared to JA. Thus, the present study suggests that BR and JA supplementation improves the performance of B. rapa on exposure to drought stress, which hints at the critical role of BR and JA in improving crop productivity in drought-prone areas.
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Affiliation(s)
- Waseem Ahmad Lone
- Plant Molecular Biology Laboratory, Department of Botany, University of Kashmir, Srinagar, 190 006, Kashmir, India
| | - Neelofar Majeed
- Plant Molecular Biology Laboratory, Department of Botany, University of Kashmir, Srinagar, 190 006, Kashmir, India
| | - Umer Yaqoob
- Plant Molecular Biology Laboratory, Department of Botany, University of Kashmir, Srinagar, 190 006, Kashmir, India
| | - Riffat John
- Plant Molecular Biology Laboratory, Department of Botany, University of Kashmir, Srinagar, 190 006, Kashmir, India.
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13
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Response of Tomato-Pseudomonas Pathosystem to Mild Heat Stress. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8020174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Higher plants suffer from mild heat stress when temperatures increase by 5 °C above optimum growth temperatures. This produces changes at the cellular and metabolic levels, allowing plants to adapt to heat conditions. This study investigated an increase of 5 °C above the optimum growth temperature (26 °C) of tomato plants in the tomato–Pseudomonas syringae pv. tomato pathosystem. A temperature increase above 26 °C affects plant development, the defensive pathways activated against Pseudomonas syringae pv. tomato strain DC3000 (PstDC3000), and the bacterial growth and virulence machinery. The results demonstrated that tomato plants were able to acclimate to mild heat stress, showing no symptoms of damage. Moreover, plants subjected to a 5 °C increase (T31 °C plants) showed higher basal levels of metabolites such as proline and putrescine, which probably act as compatible osmolytes. This demonstrates their importance as key components of thermotolerance. When grown under mild heat stress, plants were less susceptible to PstDC3000 and showed increased accumulation of abscisic acid, jasmonic acid-isoleucine, and spermine. In addition, the temperature increase negatively affected the infectivity of PstDC3000. Inhibition of the genes responsible for quorum sensing establishment and synthesis of flagellin and coronatine was observed in bacteria extracted from T31 °C plants. Analysis of the genes involved in the synthesis of the type III secretion system indicates the important role of this system in bacterial growth under these conditions. As the known resistance mechanisms involved in the defense against PstDC3000 were not activated, the changes in its virulence mechanisms under high temperatures may explain the lower infection observed in the T31 °C plants.
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14
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Lahuta LB, Szablińska-Piernik J, Horbowicz M. Changes in Metabolic Profiles of Pea ( Pisum sativum L.) as a Result of Repeated Short-Term Soil Drought and Subsequent Re-Watering. Int J Mol Sci 2022; 23:1704. [PMID: 35163626 PMCID: PMC8836265 DOI: 10.3390/ijms23031704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/31/2022] [Accepted: 01/31/2022] [Indexed: 01/09/2023] Open
Abstract
The metabolic re-arrangements of peas (Pisum sativum L.) under soil drought and re-watering are still not fully explained. The search for metabolic markers of the stress response is important in breeding programs, to allow for the selection drought-resistant cultivars. During the present study, changes in the polar metabolite content in pea plant shoots were measured under repeated short-term soil drought and subsequent re-watering. A gas chromatograph, equipped with a mass spectrometer (GC-MS), was used for the metabolite profiling of pea plants during their middle stage of vegetation (14-34 days after sowing, DAS). The major changes occurred in the concentration of amino acids and some soluble carbohydrates. Among them, proline, γ-aminobutyric acid (GABA), branched-chain amino acids, hydroxyproline, serine, myo-inositol, and raffinose were accumulated under each soil drought and decreased after re-watering. Besides, the obtained results show that the first drought/re-watering cycle increased the ability of pea plants to restore a metabolic profile similar to the control after the second similar stress. The accumulation of proline seems to be an important part of drought memory in pea plants. However, confirmation of this suggestion requires metabolite profiling studies on a broader spectrum of pea cultivars.
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Affiliation(s)
- Lesław Bernard Lahuta
- Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Street 1A/103A, 10719 Olsztyn, Poland; (J.S.-P.); (M.H.)
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15
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Li R, Zeng X, Bai X, Qu J, Wang Z. Root colonization and rhizospheric community structure of Arbuscular Mycorrhizal Fungi in BADH transgenic maize BZ-136 and its recipient under salt stress and neutral soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:66409-66419. [PMID: 34333748 DOI: 10.1007/s11356-021-15520-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Betaine aldehyde dehydrogenase (BADH) transgenic maize has a capability to grow under drought and salt stress; the risk of planting BADH transgenic maize on symbiotic microorganisms remains problematic, however. A pot experiment was carried out to assess the impact of BADH transgenic maize BZ-136 on arbuscular mycorrhizal fungi (AMF) colonization in root and community structure in rhizosphere soil compared with that of parental maize Zheng58 in neutral and saline-alkaline soil. Microscope observation found that BZ-136 only had a significantly reduced effect on AMF colonization at the elongation stage (9-14%). High-throughput sequencing analysis revealed that the AMF taxonomic composition kept consistency at the genus level between transgenic BZ-136 and non-transgenic parental Zheng58. NMDS analysis verified the slight difference in community structure between BZ-136 and Zheng58 presented an agrotype-dependent pattern. AMF community indices showed that BZ-136 had a higher richness at the flowering stage in saline-alkaline soil and had a higher diversity at the mature stage in neutral soil. Heatmap analysis also illuminated AMF community structure of transgenic maize at species level was similar to that of non-transgenic maize. In summary, cropping transgenic BADH maize has minor or transient effects on AMF colonization and rhizospheric soil AMF community structure, while agrotype has a stronger effect on AMF community structure.
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Affiliation(s)
- Rui Li
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Xing Zeng
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China
| | - Xin Bai
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Juanjuan Qu
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.
| | - Zhenhua Wang
- College of Agriculture, Northeast Agricultural University, Harbin, 150030, China.
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16
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Melandri G, Thorp KR, Broeckling C, Thompson AL, Hinze L, Pauli D. Assessing Drought and Heat Stress-Induced Changes in the Cotton Leaf Metabolome and Their Relationship With Hyperspectral Reflectance. FRONTIERS IN PLANT SCIENCE 2021; 12:751868. [PMID: 34745185 PMCID: PMC8569624 DOI: 10.3389/fpls.2021.751868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
The study of phenotypes that reveal mechanisms of adaptation to drought and heat stress is crucial for the development of climate resilient crops in the face of climate uncertainty. The leaf metabolome effectively summarizes stress-driven perturbations of the plant physiological status and represents an intermediate phenotype that bridges the plant genome and phenome. The objective of this study was to analyze the effect of water deficit and heat stress on the leaf metabolome of 22 genetically diverse accessions of upland cotton grown in the Arizona low desert over two consecutive years. Results revealed that membrane lipid remodeling was the main leaf mechanism of adaptation to drought. The magnitude of metabolic adaptations to drought, which had an impact on fiber traits, was found to be quantitatively and qualitatively associated with different stress severity levels during the two years of the field trial. Leaf-level hyperspectral reflectance data were also used to predict the leaf metabolite profiles of the cotton accessions. Multivariate statistical models using hyperspectral data accurately estimated (R 2 > 0.7 in ∼34% of the metabolites) and predicted (Q 2 > 0.5 in 15-25% of the metabolites) many leaf metabolites. Predicted values of metabolites could efficiently discriminate stressed and non-stressed samples and reveal which regions of the reflectance spectrum were the most informative for predictions. Combined together, these findings suggest that hyperspectral sensors can be used for the rapid, non-destructive estimation of leaf metabolites, which can summarize the plant physiological status.
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Affiliation(s)
- Giovanni Melandri
- School of Plant Sciences, University of Arizona, Tucson, AZ, United States
| | - Kelly R. Thorp
- United States Department of Agriculture-Agricultural Research Service, Arid Land Agricultural Research Center, Maricopa, AZ, United States
| | - Corey Broeckling
- Analytical Resources Core: Bioanalysis and Omics Center, Colorado State University, Fort Collins, CO, United States
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO, United States
| | - Alison L. Thompson
- United States Department of Agriculture-Agricultural Research Service, Arid Land Agricultural Research Center, Maricopa, AZ, United States
| | - Lori Hinze
- United States Department of Agriculture-Agricultural Research Service, Southern Plains Agricultural Research Center, College Station, TX, United States
| | - Duke Pauli
- School of Plant Sciences, University of Arizona, Tucson, AZ, United States
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17
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Bhattacharyya A, Pablo CHD, Mavrodi OV, Weller DM, Thomashow LS, Mavrodi DV. Rhizosphere plant-microbe interactions under water stress. ADVANCES IN APPLIED MICROBIOLOGY 2021; 115:65-113. [PMID: 34140134 DOI: 10.1016/bs.aambs.2021.03.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Climate change, with its extreme temperature, weather and precipitation patterns, is a major global concern of dryland farmers, who currently meet the challenges of climate change agronomically and with growth of drought-tolerant crops. Plants themselves compensate for water stress by modifying aerial surfaces to control transpiration and altering root hydraulic conductance to increase water uptake. These responses are complemented by metabolic changes involving phytohormone network-mediated activation of stress response pathways, resulting in decreased photosynthetic activity and the accumulation of metabolites to maintain osmotic and redox homeostasis. Phylogenetically diverse microbial communities sustained by plants contribute to host drought tolerance by modulating phytohormone levels in the rhizosphere and producing water-sequestering biofilms. Drylands of the Inland Pacific Northwest, USA, illustrate the interdependence of dryland crops and their associated microbiota. Indigenous Pseudomonas spp. selected there by long-term wheat monoculture suppress root diseases via the production of antibiotics, with soil moisture a critical determinant of the bacterial distribution, dynamics and activity. Those pseudomonads producing phenazine antibiotics on wheat had more abundant rhizosphere biofilms and provided improved tolerance to drought, suggesting a role of the antibiotic in alleviation of drought stress. The transcriptome and metabolome studies suggest the importance of wheat root exudate-derived osmoprotectants for the adaptation of these pseudomonads to the rhizosphere lifestyle and support the idea that the exchange of metabolites between plant roots and microorganisms profoundly affects and shapes the belowground plant microbiome under water stress.
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Affiliation(s)
- Ankita Bhattacharyya
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS, United States
| | - Clint H D Pablo
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS, United States
| | - Olga V Mavrodi
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS, United States
| | - David M Weller
- USDA Agricultural Research Service, Wheat Health, Genetics and Quality Research Unit, Pullman, WA, United States
| | - Linda S Thomashow
- USDA Agricultural Research Service, Wheat Health, Genetics and Quality Research Unit, Pullman, WA, United States
| | - Dmitri V Mavrodi
- School of Biological, Environmental, and Earth Sciences, The University of Southern Mississippi, Hattiesburg, MS, United States.
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18
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Ali O, Ramsubhag A, Jayaraman J. Biostimulant Properties of Seaweed Extracts in Plants: Implications towards Sustainable Crop Production. PLANTS (BASEL, SWITZERLAND) 2021; 10:531. [PMID: 33808954 PMCID: PMC8000310 DOI: 10.3390/plants10030531] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 02/01/2023]
Abstract
The use of seaweed-based bioproducts has been gaining momentum in crop production systems owing to their unique bioactive components and effects. They have phytostimulatory properties that result in increased plant growth and yield parameters in several important crop plants. They have phytoelicitor activity as their components evoke defense responses in plants that contribute to resistance to several pests, diseases, and abiotic stresses including drought, salinity, and cold. This is often linked to the upregulation of important defense-related genes and pathways in the plant system, priming the plant defenses against future attacks. They also evoke phytohormonal responses due to their specific components and interaction with plant growth regulation. Treatment by seaweed extracts and products also causes significant changes in the microbiome components of soil and plant in support of sustainable plant growth. Seaweed extracts contain a plethora of substances which are mostly organic, but trace levels of inorganic nutrient elements are also present. Fractionation of seaweed extracts into their components and their respective bioassays, however, has not yielded favorable growth effects. Only the whole seaweed extracts have been consistently proven to be very effective, which highlights the role of multiple components and their complex interactive effects on plant growth processes. Since seaweed extracts are highly organic, they are ideally suited for organic farming and environmentally sensitive crop production. They are also very compatible with other crop inputs, paving the way for an integrated management approach geared towards sustainability. The current review discusses the growth and functional effects evoked by seaweed extracts and their modes and mechanisms of action in crop plants which are responsible for elicitor and phytostimulatory activities. The review further analyses the potential value of seaweed extracts in integrated crop management systems towards sustainable crop production.
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Affiliation(s)
| | | | - Jayaraj Jayaraman
- Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, St. Augustine, Trinidad and Tobago; (O.A.); (A.R.)
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19
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Kothari A, Lachowiec J. Roles of Brassinosteroids in Mitigating Heat Stress Damage in Cereal Crops. Int J Mol Sci 2021; 22:2706. [PMID: 33800127 PMCID: PMC7962182 DOI: 10.3390/ijms22052706] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/27/2021] [Accepted: 03/04/2021] [Indexed: 01/24/2023] Open
Abstract
Heat stress causes huge losses in the yield of cereal crops. Temperature influences the rate of plant metabolic and developmental processes that ultimately determine the production of grains, with high temperatures causing a reduction in grain yield and quality. To ensure continued food security, the tolerance of high temperature is rapidly becoming necessary. Brassinosteroids (BR) are a class of plant hormones that impact tolerance to various biotic and abiotic stresses and regulate cereal growth and fertility. Fine-tuning the action of BR has the potential to increase cereals' tolerance and acclimation to heat stress and maintain yields. Mechanistically, exogenous applications of BR protect yields through amplifying responses to heat stress and rescuing the expression of growth promoters. Varied BR compounds and differential signaling mechanisms across cereals point to a diversity of mechanisms that can be leveraged to mitigate heat stress. Further, hormone transport and BR interaction with other molecules in plants may be critical to utilizing BR as protective agrochemicals against heat stress. Understanding the interplay between heat stress responses, growth processes and hormone signaling may lead us to a comprehensive dogma of how to tune BR application for optimizing cereal growth under challenging environments in the field.
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Affiliation(s)
| | - Jennifer Lachowiec
- Plant Sciences and Plant Pathology Department, Montana State University, Bozeman, MT 59717, USA;
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20
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Zhang K, Lyu W, Gao Y, Zhang X, Sun Y, Huang B. Choline-Mediated Lipid Reprogramming as a Dominant Salt Tolerance Mechanism in Grass Species Lacking Glycine Betaine. PLANT & CELL PHYSIOLOGY 2021; 61:2018-2030. [PMID: 32931553 DOI: 10.1093/pcp/pcaa116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Choline, as a precursor of glycine betaine (GB) and phospholipids, is known to play roles in plant tolerance to salt stress, but the downstream metabolic pathways regulated by choline conferring salt tolerance are still unclear for non-GB-accumulating species. The objectives were to examine how choline affects salt tolerance in a non-GB-accumulating grass species and to determine major metabolic pathways of choline regulating salt tolerance involving GB or lipid metabolism. Kentucky bluegrass (Poa pratensis) plants were subjected to salt stress (100 mM NaCl) with or without foliar application of choline chloride (1 mM) in a growth chamber. Choline or GB alone and the combined application increased leaf photochemical efficiency, relative water content and osmotic adjustment and reduced leaf electrolyte leakage. Choline application had no effects on the endogenous GB content and GB synthesis genes did not show responses to choline under nonstress and salt stress conditions. GB was not detected in Kentucky bluegrass leaves. Lipidomic analysis revealed an increase in the content of monogalactosyl diacylglycerol, phosphatidylcholine and phosphatidylethanolamine and a decrease in the phosphatidic acid content by choline application in plants exposed to salt stress. Choline-mediated lipid reprogramming could function as a dominant salt tolerance mechanism in non-GB-accumulating grass species.
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Affiliation(s)
- Kun Zhang
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Weiting Lyu
- Department of Medicinal Chemistry, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Yanli Gao
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Xiaxiang Zhang
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Yan Sun
- College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
| | - Bingru Huang
- Department of Plant Biology and Pathology, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
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21
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Cisse EHM, Miao LF, Yang F, Huang JF, Li DD, Zhang J. Gly Betaine Surpasses Melatonin to Improve Salt Tolerance in Dalbergia odorifera. FRONTIERS IN PLANT SCIENCE 2021; 12:588847. [PMID: 33633756 PMCID: PMC7900558 DOI: 10.3389/fpls.2021.588847] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 01/19/2021] [Indexed: 05/15/2023]
Abstract
Salinity is one of the most serious factors limiting plant growth which can provoke significant losses in agricultural crop production, particularly in arid and semi-arid areas. This study aimed to investigate whether melatonin (MT; 0.05 and 0.1 mM), which has pleiotropic roles, has a better effect than glycine betaine (GB; 10 and 50 mM) on providing salt tolerance in a woody plant Dalbergia odorifera T. Chen. Also, the alternative oxidase activity (AOX) in plant subjected to MT or GB under salinity (150 and 250 mM) was evaluated given that the effect of exogenous MT or GB on AOX has not been reported yet. The results showed that the exogenous application of GB on the seedlings of D. odorifera increased the plant growth parameters, relative water content, total of chlorophyll content, and carotenoid content compared with well-watered and MT treatments. Under severe salinity, the seedlings subjected to GB showed, a significant enhancement in water use efficiency, transpiration, and net photosynthetic rate regardless to MT-treated seedlings. The levels of proline and soluble sugar in the seedlings treated with MT or GB decreased significantly under mild and severe salinity correlated with those in salt-stressed seedlings. Furthermore, GB-treated plants exhibited a significant inhibition of malondialdehyde content compared with MT-treated plants. The concentration of thiols and phenolic compounds were significantly enhanced in the leaves of seedlings treated with MT compared with those treated with GB. Under salt stress condition, GB scavenged significantly higher levels of hydrogen peroxide than MT; while under severe salinity, plants subjected to MT showed better scavenging ability for hydroxyl radicals compared with GB-treated seedlings. The results demonstrated also an enhancement of the levels of superoxide dismutase (SOD), guaiacol peroxidase, and AOX activities in seedlings treated with GB or MT compared with salt-stressed plants. The catalase activity (CAT) was increased by 0.05 mM MT and 0.1 mM GB under mild salinity. Meanwhile, the AOX activity under severe salinity was enhanced only by GB 50 mM. The findings of this study suggested that GB-treated seedlings possessed a better salt tolerance in comparison with MT-treated seedlings.
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Abdelrahman M, Ariyanti NA, Sawada Y, Tsuji F, Hirata S, Hang TTM, Okamoto M, Yamada Y, Tsugawa H, Hirai MY, Shigyo M. Metabolome-Based Discrimination Analysis of Shallot Landraces and Bulb Onion Cultivars Associated with Differences in the Amino Acid and Flavonoid Profiles. Molecules 2020; 25:molecules25225300. [PMID: 33202886 PMCID: PMC7697566 DOI: 10.3390/molecules25225300] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 01/29/2023] Open
Abstract
Shallot landraces and varieties are considered an important genetic resource for Allium breeding due to their high contents of several functional metabolites. Aiming to provide new genetic materials for the development of a novel bulb onion cultivar derived from intraspecific hybrids with useful agronomic traits from shallots, the metabolic profiles in the bulbs of 8 Indonesian shallot landraces and 7 short-day and 3 long-day bulb onion cultivars were established using LC–Q-TOF-MS/MS. Principal component analysis, partial least squares discriminant analysis, and dendrogram clustering analysis showed two major groups; group I contained all shallot landraces and group II contained all bulb onion cultivars, indicating that shallots exhibited a distinct metabolic profile in comparison with bulb onions. Variable importance in the projection and Spearman’s rank correlation indicated that free and conjugated amino acids, flavonoids (especially metabolites having flavonol aglycone), and anthocyanins, as well as organic acids, were among the top metabolite variables that were highly associated with shallot landraces. The absolute quantification of 21 amino acids using conventional HPLC analysis showed high contents in shallots rather than in bulb onions. The present study indicated that shallots reprogrammed their metabolism toward a high accumulation of amino acids and flavonoids as an adaptive mechanism in extremely hot tropical environments.
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Affiliation(s)
- Mostafa Abdelrahman
- Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt;
| | - Nur Aeni Ariyanti
- Department of Biology Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta, Yogyakarta 55281, Indonesia;
| | - Yuji Sawada
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; (Y.S.); (M.O.); (Y.Y.); (H.T.); (M.Y.H.)
| | - Fumitada Tsuji
- Institute of Food Sciences and Technologies, Ajinomoto Co., Inc., 1-1 Suzukichō, Kawasaki-ku, Kawasaki 210-8681, Kanagawa, Japan;
| | - Sho Hirata
- Laboratory of Agroecology, Faculty of Agriculture, Kyushu University, Kasuya, Fukuoka 811-2307, Japan;
| | - Tran Thi Minh Hang
- Department of Agronomy, Vietnam National University of Agriculture, Trauqui, Gialam, Hanoi 100000, Vietnam;
| | - Mami Okamoto
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; (Y.S.); (M.O.); (Y.Y.); (H.T.); (M.Y.H.)
| | - Yutaka Yamada
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; (Y.S.); (M.O.); (Y.Y.); (H.T.); (M.Y.H.)
| | - Hiroshi Tsugawa
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; (Y.S.); (M.O.); (Y.Y.); (H.T.); (M.Y.H.)
| | - Masami Yokota Hirai
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; (Y.S.); (M.O.); (Y.Y.); (H.T.); (M.Y.H.)
| | - Masayoshi Shigyo
- Laboratory of Vegetable Crop Science, College of Agriculture, Graduate School of Sciences and Technology for Innovation, Yamaguchi University Yamaguchi City, Yamaguchi 753-8515, Japan
- Correspondence: ; Tel.: +81-839-335-842
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Farag MA, Shakour ZT, Lübken T, Frolov A, Wessjohann LA, Mahrous E. Unraveling the metabolome composition and its implication for Salvadora persica L. use as dental brush via a multiplex approach of NMR and LC-MS metabolomics. J Pharm Biomed Anal 2020; 193:113727. [PMID: 33197832 DOI: 10.1016/j.jpba.2020.113727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 02/06/2023]
Abstract
Salvadora persica L. (toothbrush tree, Miswak) is well recognized in most Middle Eastern and African countries for its potential role in dental care, albeit the underlying mechanism for its effectiveness is still not fully understood. A comparative MS and NMR metabolomics approach was employed to investigate the major primary and secondary metabolites composition of S. persica in context of its organ type viz., root or stem to rationalize for its use as a tooth brush. NMR metabolomics revealed its enrichment in nitrogenous compounds including proline-betaines i.e., 4-hydroxy-stachydrine and stachydrine reported for the first time in S. persica. LC/MS metabolomics identified flavonoids (8), benzylurea derivatives (5), butanediamides (3), phenolic acids (8) and 5 sulfur compounds, with 21 constituents reported for the first time in S. persica. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) of either NMR or LC/MS dataset clearly separated stem from root specimens based on nitrogenous compounds abundance in roots and is justifying for its preference as toothbrush versus stems. The presence of betaines at high levels in S. persica (9-12 μg/mg dry weight) offers novel insights into its functioning as an osmoprotectant that maintains the hydration of oral mucosa. Additionally, the previously described anti-inflammatory activity of stachydrine along with the antimicrobial effects of sulfonated flavonoids, benzylisothiocynate and ellagic acid derivatives are likely contributors to S. persica oral hygiene health benefits. Among root samples, variation in sugars and organic acids levels were the main discriminatory criterion. This study provides the first standardization of S. persica extract using qNMR for further inclusion in nutraceuticals.
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Affiliation(s)
- Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr el Aini St., P.B. 11562, Cairo, Egypt; Department of Chemistry, School of Sciences & Engineering, The American University in Cairo, New Cairo 11835, Egypt.
| | - Zeinab T Shakour
- Laboratory of Phytochemistry, National Organization for Drug Control and Research, Cairo, Egypt
| | - Tilo Lübken
- Organic Chemistry, Technische Universität Dresden, Bergstraße 66, 06120 Dresden, Germany
| | - Andrej Frolov
- Leibniz Institute of Plant Biochemistry, Dept. Bioorganic Chemistry, Weinberg 3, D-06120, Halle (Saale), Germany; Department of Biochemistry, St. Petersburg State University, St Petersburg, Russia
| | - Ludger A Wessjohann
- Leibniz Institute of Plant Biochemistry, Dept. Bioorganic Chemistry, Weinberg 3, D-06120, Halle (Saale), Germany
| | - Engy Mahrous
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr el Aini St., P.B. 11562, Cairo, Egypt
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Zhao S, Gao H, Luo J, Wang H, Dong Q, Wang Y, Yang K, Mao K, Ma F. Genome-wide analysis of the light-harvesting chlorophyll a/b-binding gene family in apple (Malus domestica) and functional characterization of MdLhcb4.3, which confers tolerance to drought and osmotic stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 154:517-529. [PMID: 32688296 DOI: 10.1016/j.plaphy.2020.06.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 05/27/2023]
Abstract
In higher plants, the light-harvesting chlorophyll a/b-binding (Lhc) proteins function in multiple processes that are critical to plant growth, development, and abiotic stress response. However, the Lhc gene family has not been well characterized in the important fruit crop, apple (Malus × domestica Borkh.). In this study, we identified 27 Lhc genes in the apple genome. Phylogenetic analysis showed that the Lhc gene family could be classified into three major subfamilies, each of whose members shared similar conserved motifs. Evolutionary analysis indicated that duplicated MdLhc genes were primarily under purifying selection. MdLhcs were expressed at varying levels in all tissues examined and showed different expression patterns under drought stress. The overexpression of MdLhcb4.3 in transgenic Arabidopsis and apple callus enhanced their tolerance to drought and osmotic stress. Taken together, these results demonstrate the important role of Lhc proteins in the regulation of plant resistance to drought and osmotic stress and provide valuable information for further study of Lhc functions in apple.
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Affiliation(s)
- Shuang Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Hanbing Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Jiawei Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Haibo Wang
- Shandong Institute of Pomology, Tai'an, 271000, China.
| | - Qinglong Dong
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Yanpeng Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Kaiyan Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, 712100, China.
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Sofy MR, Elhawat N. Glycine betaine counters salinity stress by maintaining high K +/Na + ratio and antioxidant defense via limiting Na + uptake in common bean (Phaseolus vulgaris L.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 200:110732. [PMID: 32460049 DOI: 10.1016/j.ecoenv.2020.110732] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/23/2020] [Accepted: 04/29/2020] [Indexed: 05/21/2023]
Abstract
This paper reports the role of exogenous glycine betaine (25 and 50 mM GB at a rate of 50 mL per plant) in enhancing NaCl-stress tolerance in common bean (Phaseolus vulgaris L.). Irrigating plants by simulated saline water, containing 0, 50 and 100 mM sodium chloride (NaCl), significantly reduced the growth dynamics, photosynthetic pigments (i.e., Chl a, Chl b, and carotenoids), membrane stability index (MSI), relative water content (RWC), and pod yield. While, malondialdehyde (MDA), endogenous proline, and glutathione contents, electrolyte leakage (EL), antioxidant defense system, and Na+ accumulation markedly increased upon exposure to NaCl-stress. However, the application of exogenous GB significantly improved salt tolerance of common bean as it increased the antioxidant defense including both enzymatic (i.e., peroxidase, superoxide dismutase, and catalase) and nonenzymatic (i.e., proline and glutathione) agents. Consequently, MSI, RWC, EL, and photosynthetic pigments have been improved recording significantly higher values than the control. Moreover, the pod yield increased by 29.8 and 59.4% when plants grown under 50 and 100 mM NaCl, respectively, were sprayed with 25 mM GB. Our results show that GB-induced slat tolerance in common bean plants mainly depends on the osmoregulation effect of GB and to a lesser extent on its antioxidant capacity. Foliar application of GB significantly reduced the accumulation of Na+ and at the same time induced K+ uptake maintaining a higher K+/Na+ ratio. Despite some changes in the activities of antioxidant enzymes induced by the application of GB, no consistent contribution in the salt tolerance could be cited in this study. Therefore, we suggest that salt tolerance is largely unrelated to the antioxidant defense ability of GB in common bean. While the potential role of GB in ameliorating salt tolerance is mainly due to the adjustment of ions uptake through limiting Na+ uptake and alternatively increasing K+ accumulation in plant tissues.
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Affiliation(s)
- Mahmoud R Sofy
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt.
| | - Nevien Elhawat
- Department of Biological and Environmental Sciences, Faculty of Home Economic, Al-Azhar University, 31732, Tanta, Egypt; Agricultural Botany, Plant Physiology and Biotechnology Department, University of Debrecen, AGTC, 4032, Debrecen, Hungary.
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26
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Goche T, Shargie NG, Cummins I, Brown AP, Chivasa S, Ngara R. Comparative physiological and root proteome analyses of two sorghum varieties responding to water limitation. Sci Rep 2020; 10:11835. [PMID: 32678202 PMCID: PMC7366710 DOI: 10.1038/s41598-020-68735-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/09/2020] [Indexed: 01/31/2023] Open
Abstract
When exposed to drought stress many plants reprogram their gene expression to activate adaptive biochemical and physiological responses for survival. However, most of the well-studied adaptive responses are common between drought-sensitive and drought-tolerant species, making it difficult to identify the key mechanisms underpinning successful drought tolerance in crops. We developed a sorghum experimental system that compares between drought-sensitive (ICSB338) and enhanced drought-tolerant (SA1441) varieties. We show that sorghum activates a swift and robust stomatal shutdown to preserve leaf water content when water stress has been sensed. Water uptake is enhanced via increasing root cell water potential through the rapid biosynthesis of predominantly glycine betaine and an increased root-to-shoot ratio to explore more soil volume for water. In addition to stomatal responses, there is a prompt accumulation of proline in leaves and effective protection of chlorophyll during periods of water limitation. Root and stomatal functions rapidly recover from water limitation (within 24 h of re-watering) in the drought-tolerant variety, but recovery is impaired in the drought-sensitive sorghum variety. Analysis of the root proteome revealed complex protein networks that possibly underpin sorghum responses to water limitation. Common and unique protein changes between the two sorghum varieties provide new targets for future use in investigating sorghum drought tolerance.
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Affiliation(s)
- Tatenda Goche
- Department of Plant Sciences, University of the Free State, Qwaqwa Campus, P. Bag X13, Phuthaditjhaba, South Africa
| | - Nemera G Shargie
- Agricultural Research Council-Grain Crops Institute, P. Bag X1251, Potchefstroom, 2520, South Africa
| | - Ian Cummins
- Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - Adrian P Brown
- Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK
| | - Stephen Chivasa
- Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK.
| | - Rudo Ngara
- Department of Plant Sciences, University of the Free State, Qwaqwa Campus, P. Bag X13, Phuthaditjhaba, South Africa.
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Wu X, Wang Y, Tang H. Quantitative Metabonomic Analysis Reveals the Germination-Associated Dynamic and Systemic Biochemical Changes for Mung-Bean ( Vigna radiata) Seeds. J Proteome Res 2020; 19:2457-2470. [PMID: 32393034 DOI: 10.1021/acs.jproteome.0c00181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Seed germination is essential for plant survival, germplasm resource preservation, and worldwide food supplies, although the germination-associated seed biochemical variations are not fully understood. With the NMR-based metabonomics, we quantitatively analyzed the comprehensive metabolite composition (metabonome) of mung-bean (Vigna radiata) seeds at eight time points of germination covering all three phases. We found that mung-bean seed metabonomes were dominated by 63 metabolites including lipids, amino acids, oligo-/monosaccharides, cyclitols, cholines, organic acids, nucleotides/-sides, nicotinates, and the shikimate pathway-mediated secondary metabolites. During germination, metabolic changes included mainly the degradation of proteins and raffinose family oligosaccharides, glycolysis, tricarboxylic acid (TCA) cycle, anaerobic respiration, biosynthesis of osmolytes and antioxidants together with the metabolisms of nucleotides/-sides, nicotinates, and amino acids. Oligosaccharide degradation was the primary energy source for germination, which coupled with the mobilization of starch and protein storages to produce sugars and amino acids for biomaterial and energy generations. Osmotic and redox regulations were prerequisites for seed germination together with mitochondrial reparations and generations to enable TCA cycle. During the postgermination growth stage (phase-3), the use of small molecules including amino acids and saccharides was switched to meet the growth demands of radicle cells. Small metabolites passed freely through seed testa leaking into the culture media during early germination but were reabsorbed by seed cells around the postgermination growth stage. Extra after-ripening accelerated these metabolic processes of seeds in phase-1, especially the biosynthesis of cyclitols, choline, and nicotinates, increasing the germination uniformity in terms of speed and percentage. Germination-resistant seeds were incapable of activating the germination-associated metabolic processes.
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Affiliation(s)
- Xiangyu Wu
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, P. R. China.,CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan 430071, P. R. China
| | - Yunlong Wang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, P. R. China
| | - Huiru Tang
- State Key Laboratory of Genetic Engineering, Zhongshan Hospital and School of Life Sciences, Human Phenome Institute, Metabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular Phenomics, Fudan University, Shanghai 200438, P. R. China
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28
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Yang C, Zhao W, Wang Y, Zhang L, Huang S, Lin J. Metabolomics Analysis Reveals the Alkali Tolerance Mechanism in Puccinellia tenuiflora Plants Inoculated with Arbuscular Mycorrhizal Fungi. Microorganisms 2020; 8:E327. [PMID: 32110985 PMCID: PMC7142761 DOI: 10.3390/microorganisms8030327] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/07/2020] [Accepted: 02/25/2020] [Indexed: 11/30/2022] Open
Abstract
Soil alkalization is a major environmental threat that affects plant distribution and yield in northeastern China. Puccinellia tenuiflora is an alkali-tolerant grass species that is used for salt-alkali grassland restoration. However, little is known about the molecular mechanisms by which arbuscular mycorrhizal fungi (AMF) enhance P. tenuiflora responses to alkali stress. Here, metabolite profiling in P. tenuiflora seedlings with or without arbuscular mycorrhizal fungi (AMF) under alkali stress was conducted using liquid chromatography combined with time-of-flight mass spectrometry (LC/TOF-MS). The results showed that AMF colonization increased seedling biomass under alkali stress. In addition, principal component analysis (PCA) and orthogonal projections to latent structures discriminant analysis (OPLS-DA) demonstrated that non-AM and AM seedlings showed different responses under alkali stress. A heat map analysis showed that the levels of 88 metabolites were significantly changed in non-AM seedlings, but those of only 31 metabolites were significantly changed in AM seedlings. Moreover, the levels of a total of 62 metabolites were significantly changed in P. tenuiflora seedlings after AMF inoculation. The results suggested that AMF inoculation significantly increased amino acid, organic acid, flavonoid and sterol contents to improve osmotic adjustment and maintain cell membrane stability under alkali stress. P. tenuiflora seedlings after AMF inoculation produced more plant hormones (salicylic acid and abscisic acid) than the non-AM seedlings, probably to enhance the antioxidant system and facilitate ion balance under stress conditions. In conclusion, these findings provide new insights into the metabolic mechanisms of P. tenuiflora seedlings with arbuscular mycorrhizal fungi under alkali conditions and clarify the role of AM in the molecular regulation of this species under alkali stress.
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Affiliation(s)
- Chunxue Yang
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
| | - Wenna Zhao
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
| | - Yingnan Wang
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
| | - Liang Zhang
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
| | - Shouchen Huang
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
| | - Jixiang Lin
- College of Landscape Architecture, Northeast Forestry University, Harbin 150040, China; (C.Y.); (W.Z.); (Y.W.); (L.Z.); (S.H.)
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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29
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Rani A, Devi P, Jha UC, Sharma KD, Siddique KHM, Nayyar H. Developing Climate-Resilient Chickpea Involving Physiological and Molecular Approaches With a Focus on Temperature and Drought Stresses. FRONTIERS IN PLANT SCIENCE 2020; 10:1759. [PMID: 32161601 PMCID: PMC7052492 DOI: 10.3389/fpls.2019.01759] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/16/2019] [Indexed: 05/19/2023]
Abstract
Chickpea is one of the most economically important food legumes, and a significant source of proteins. It is cultivated in more than 50 countries across Asia, Africa, Europe, Australia, North America, and South America. Chickpea production is limited by various abiotic stresses (cold, heat, drought, salt, etc.). Being a winter-season crop in northern south Asia and some parts of the Australia, chickpea faces low-temperature stress (0-15°C) during the reproductive stage that causes substantial loss of flowers, and thus pods, to inhibit its yield potential by 30-40%. The winter-sown chickpea in the Mediterranean, however, faces cold stress at vegetative stage. In late-sown environments, chickpea faces high-temperature stress during reproductive and pod filling stages, causing considerable yield losses. Both the low and the high temperatures reduce pollen viability, pollen germination on the stigma, and pollen tube growth resulting in poor pod set. Chickpea also experiences drought stress at various growth stages; terminal drought, along with heat stress at flowering and seed filling can reduce yields by 40-45%. In southern Australia and northern regions of south Asia, lack of chilling tolerance in cultivars delays flowering and pod set, and the crop is usually exposed to terminal drought. The incidences of temperature extremes (cold and heat) as well as inconsistent rainfall patterns are expected to increase in near future owing to climate change thereby necessitating the development of stress-tolerant and climate-resilient chickpea cultivars having region specific traits, which perform well under drought, heat, and/or low-temperature stress. Different approaches, such as genetic variability, genomic selection, molecular markers involving quantitative trait loci (QTLs), whole genome sequencing, and transcriptomics analysis have been exploited to improve chickpea production in extreme environments. Biotechnological tools have broadened our understanding of genetic basis as well as plants' responses to abiotic stresses in chickpea, and have opened opportunities to develop stress tolerant chickpea.
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Affiliation(s)
- Anju Rani
- Department of Botany, Panjab University, Chandigarh, India
| | - Poonam Devi
- Department of Botany, Panjab University, Chandigarh, India
| | - Uday Chand Jha
- Department of Crop Improvement Division, Indian Institute of Pulses Research, Kanpur, India
| | - Kamal Dev Sharma
- Department of Agricultural Biotechnology, Himachal Pradesh Agricultural University, Palampur, India
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - Harsh Nayyar
- Department of Botany, Panjab University, Chandigarh, India
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30
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Song WS, Kim SM, Jo SH, Lee JS, Jeon HJ, Ko BJ, Choi KY, Yang YH, Kim YG. Multi-omics characterization of the osmotic stress resistance and protease activities of the halophilic bacterium Pseudoalteromonas phenolica in response to salt stress. RSC Adv 2020; 10:23792-23800. [PMID: 35517354 PMCID: PMC9054934 DOI: 10.1039/d0ra04034g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/17/2020] [Indexed: 02/02/2023] Open
Abstract
The halophilic bacterium Pseudoalteromonas phenolica is well known as a promising candidate that enables the recycling of organic wastes at high salinity. However, for industrial applications of P. phenolica further research is required to explore the biological mechanism for maximizing the activities and productivities of this bacterium. In this study, we investigated the osmotic stress resistance and specific protease activities of P. phenolica in a normal-salt medium (0.3 M NaCl) and high-salt medium (1 M NaCl) based on intra- and extracellular multi-omics approaches. Proteins related to betaine and proline biosynthesis were increased under high salt stress. The targeted metabolite analysis found that proline was overproduced and accumulated outside the cell at high salinity, and betaine was accumulated in the cell by activation of biosynthesis as well as uptake. In addition, extracellular serine proteases were shown to be upregulated in response to salt stress by the extracellular proteomic analysis. The specific proteolytic activity assay indicated that the activities of serine proteases, useful enzymes for the recycling of organic wastes, were increased remarkably under high salt stress. Our results suggest that betaine and proline are key osmoprotectant metabolites of P. phenolica, and they can be used for the improvement of protease production and P. phenolica activities for the recycling of high-salt organic wastes in the future. Multi-omics study showed the osmoprotective mechanism and changes of proteolytic activities of Pseudoalteromonas phenolica in response to salt stress.![]()
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Affiliation(s)
- Won-Suk Song
- School of Chemical and Biological Engineering
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Seong-Min Kim
- Department of Chemical Engineering
- Soongsil University
- Seoul 06978
- Republic of Korea
| | - Sung-Hyun Jo
- Department of Chemical Engineering
- Soongsil University
- Seoul 06978
- Republic of Korea
| | - Jae-Seung Lee
- Department of Chemical Engineering
- Soongsil University
- Seoul 06978
- Republic of Korea
| | - Hyo-Jin Jeon
- Department of Chemical Engineering
- Soongsil University
- Seoul 06978
- Republic of Korea
| | - Byoung Joon Ko
- New Drug Development Center
- Osong Medical Innovation Foundation
- Cheongju 28160
- Republic of Korea
| | - Kwon-Young Choi
- Department of Environmental Engineering
- College of Engineering
- Ajou University
- Suwon 16499
- Republic of Korea
| | - Yung-Hun Yang
- Department of Biological Engineering
- College of Engineering
- Konkuk University
- Seoul 05029
- Republic of Korea
| | - Yun-Gon Kim
- Department of Chemical Engineering
- Soongsil University
- Seoul 06978
- Republic of Korea
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31
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Meena M, Divyanshu K, Kumar S, Swapnil P, Zehra A, Shukla V, Yadav M, Upadhyay RS. Regulation of L-proline biosynthesis, signal transduction, transport, accumulation and its vital role in plants during variable environmental conditions. Heliyon 2019; 5:e02952. [PMID: 31872123 PMCID: PMC6909094 DOI: 10.1016/j.heliyon.2019.e02952] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/28/2019] [Accepted: 11/25/2019] [Indexed: 12/19/2022] Open
Abstract
Background In response to various environmental stresses, many plant species synthesize L-proline in the cytosol and accumulates in the chloroplasts. L-Proline accumulation in plants is a well-recognized physiological reaction to osmotic stress prompted by salinity, drought and other abiotic stresses. L-Proline plays several protective functions such as osmoprotectant, stabilizing cellular structures, enzymes, and scavenging reactive oxygen species (ROS), and keeps up redox balance in adverse situations. In addition, ample-studied osmoprotective capacity, L-proline has been also ensnared in the regulation of plant improvement, including flowering, pollen, embryo, and leaf enlargement. Scope and conclusions Albeit, ample is now well-known about L-proline metabolism, but certain characteristics of its biological roles are still indistinct. In the present review, we discuss the L-proline accumulation, metabolism, signaling, transport and regulation in the plants. We also discuss the effects of exogenous L-proline during different environmental conditions. L-Proline biosynthesis and catabolism are controlled by several cellular mechanisms, of which we identify only very fewer mechanisms. So, in the future, there is a requirement to identify such types of cellular mechanisms.
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Affiliation(s)
- Mukesh Meena
- Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, India.,Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Kumari Divyanshu
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sunil Kumar
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Prashant Swapnil
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.,International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Andleeb Zehra
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vaishali Shukla
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Mukesh Yadav
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - R S Upadhyay
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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32
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Santiago JP, Sharkey TD. Pollen development at high temperature and role of carbon and nitrogen metabolites. PLANT, CELL & ENVIRONMENT 2019; 42:2759-2775. [PMID: 31077385 DOI: 10.1111/pce.13576] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/06/2019] [Accepted: 05/06/2019] [Indexed: 05/11/2023]
Abstract
Fruit and seed crop production heavily relies on successful stigma pollination, pollen tube growth, and fertilization of female gametes. These processes depend on production of viable pollen grains, a process sensitive to high-temperature stress. Therefore, rising global temperatures threaten worldwide crop production. Close observation of plant development shows that high-temperature stress causes morpho-anatomical changes in male reproductive tissues that contribute to reproductive failure. These changes include early tapetum degradation, anther indehiscence, and deformity of pollen grains, all of which are contributing factors to pollen fertility. At the molecular level, reactive oxygen species (ROS) accumulate when plants are subjected to high temperatures. ROS is a signalling molecule that can be beneficial or detrimental for plant cells depending on its balance with the endogenous cellular antioxidant system. Many metabolites have been linked with ROS over the years acting as direct scavengers or molecular stabilizers that promote antioxidant enzyme activity. This review highlights recent advances in research on anther and pollen development and how these might explain the aberrations seen during high-temperature stress; recent work on the role of nitrogen and carbon metabolites in anther and pollen development is discussed including their potential role at high temperature.
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Affiliation(s)
- James P Santiago
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan, 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan, 48824
| | - Thomas D Sharkey
- Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, Michigan, 48824
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, 48824
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan, 48824
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33
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Paix B, Othmani A, Debroas D, Culioli G, Briand JF. Temporal covariation of epibacterial community and surface metabolome in the Mediterranean seaweed holobiont Taonia atomaria. Environ Microbiol 2019; 21:3346-3363. [PMID: 30945796 DOI: 10.1111/1462-2920.14617] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/31/2019] [Indexed: 11/30/2022]
Abstract
An integrative multi-omics approach allowed monthly variations for a year of the surface metabolome and the epibacterial community of the Mediterranean Phaeophyceae Taonia atomaria to be investigated. The LC-MS-based metabolomics and 16S rDNA metabarcoding data sets were integrated in a multivariate meta-omics analysis (multi-block PLS-DA from the MixOmic DIABLO analysis) showing a strong seasonal covariation (Mantel test: p < 0.01). A network based on positive and negative correlations between the two data sets revealed two clusters of variables, one relative to the 'spring period' and a second to the 'summer period'. The 'spring period' cluster was mainly characterized by dipeptides positively correlated with a single bacterial taxon of the Alteromonadaceae family (BD1-7 clade). Moreover, 'summer' dominant epibacterial taxa from the second cluster (including Erythrobacteraceae, Rhodospirillaceae, Oceanospirillaceae and Flammeovirgaceae) showed positive correlations with few metabolites known as macroalgal antifouling defences [e.g. dimethylsulphoniopropionate (DMSP) and proline] which exhibited a key role within the correlation network. Despite a core community that represents a significant part of the total epibacteria, changes in the microbiota structure associated with surface metabolome variations suggested that both environment and algal host shape the bacterial surface microbiota.
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Affiliation(s)
- Benoît Paix
- Université de Toulon, Laboratoire MAPIEM, EA 4323, Toulon, France
| | - Ahlem Othmani
- Université de Toulon, Laboratoire MAPIEM, EA 4323, Toulon, France
| | - Didier Debroas
- Université Clermont Auvergne, CNRS, Laboratoire Microorganismes: Génome et Environnement, UMR 6023, Clermont-Ferrand, France
| | - Gérald Culioli
- Université de Toulon, Laboratoire MAPIEM, EA 4323, Toulon, France
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Reddam A, Mitchell CA, Dasgupta S, Kirkwood JS, Vollaro A, Hur M, Volz DC. mRNA-Sequencing Identifies Liver as a Potential Target Organ for Triphenyl Phosphate in Embryonic Zebrafish. Toxicol Sci 2019; 172:51-62. [PMID: 31368501 PMCID: PMC6813745 DOI: 10.1093/toxsci/kfz169] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 01/01/2023] Open
Abstract
Triphenyl phosphate (TPHP) is a commonly used organophosphate flame retardant and plasticizer in the United States. Using zebrafish as a model, the overall objective of this study was to identify potential organs that might be targeted by TPHP during embryonic development. Based on mRNA-sequencing, TPHP exposure from 24 to 30 h post fertilization (hpf) and 24 to 48 hpf significantly affected the abundance of 305 and 274 transcripts, respectively, relative to vehicle (0.1% DMSO) controls. In addition to minor effects on cardiotoxicity- and nephrotoxicity-related pathways, Ingenuity Pathway Analysis (IPA) of significantly affected transcripts within 30- and 48-hpf embryos revealed that hepatotoxicity-related pathways were strongly affected following exposure to TPHP alone. Moreover, while pre-treatment with fenretinide (a retinoic acid receptor agonist) mitigated TPHP-induced pericardial edema and liver enlargement at 72 hpf and 128 hpf, respectively, IPA revealed that fenretinide was unable to block TPHP-induced effects on cardiotoxicity-, nephrotoxicity-, and hepatotoxicity-related pathways at 48 hpf, suggesting that TPHP-induced effects on the transcriptome were not associated with toxicity later in development. In addition, based on Oil Red O staining, we found that exposure to TPHP nearly abolished neutral lipids from the embryonic head and trunk and, based on metabolomics, significantly decreased the total abundance of metabolites - including betaine, a known osmoprotectant - at 48 and 72 hpf. Overall, our data suggest that, in addition to the heart, TPHP exposure during early development results in adverse effects on the liver, lipid utilization, and osmoregulation within embryonic zebrafish.
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Affiliation(s)
- Aalekhya Reddam
- Environmental Toxicology Graduate Program, University of California, Riverside, CA, USA.,Department of Environmental Sciences, University of California, Riverside, CA, USA
| | - Constance A Mitchell
- Environmental Toxicology Graduate Program, University of California, Riverside, CA, USA.,Department of Environmental Sciences, University of California, Riverside, CA, USA
| | - Subham Dasgupta
- Department of Environmental Sciences, University of California, Riverside, CA, USA
| | - Jay S Kirkwood
- Metabolomics Core Facility, Institute for Integrative Genome Biology, University of California, Riverside, CA, USA
| | - Alyssa Vollaro
- Metabolomics Core Facility, Institute for Integrative Genome Biology, University of California, Riverside, CA, USA
| | - Manhoi Hur
- Metabolomics Core Facility, Institute for Integrative Genome Biology, University of California, Riverside, CA, USA
| | - David C Volz
- Department of Environmental Sciences, University of California, Riverside, CA, USA
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35
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Stabili L, Licciano M, Giangrande A, Gerardi C, De Pascali SA, Fanizzi FP. First Insight on the Mucus of the Annelid Myxicola infundibulum (Polychaeta, Sabellidae) as a Potential Prospect for Drug Discovery. Mar Drugs 2019; 17:E396. [PMID: 31284386 PMCID: PMC6669576 DOI: 10.3390/md17070396] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/20/2019] [Accepted: 07/02/2019] [Indexed: 11/21/2022] Open
Abstract
Many marine organisms, including invertebrates, produce mucosal matrices having different functions. Besides mechanical protection, the mucus of many invertebrates contains specific compounds to make the animal poisonous and/or distasteful or irritating. The presence of antibiotic molecules is more advantageous for some invertebrates to contrast bacterial attack. In the present study we investigated the mucus of the Mediterranean annelid species Myxicola infundibulum living in a gelatinous envelope made up of dense mucus. Antimicrobial lysozyme-like and antioxidant activities were investigated to highlight the potential interest of the worm mucus as a source of bioactive compounds for biotechnological applications. In order to understand which kind of compounds could be responsible for the detected activities, the mucus of M. infundibulum was chemically characterized in terms of elemental composition, protein, lipid and carbohydrate content. Further chemical characterization was achieved by the advanced analytical technique of multinuclear and multidimensional NMR spectroscopy. NMR spectroscopy revealed the scarcity of lipids which preferentially resulted of alcoholic origin, or otherwise hydroxylate and several aminoacids (valine, leucine and alanine) in the aqueous extract in relation to the protein nature of M. infundibulum mucus. The mucus indeed is mainly composed by water (94% ± 0.7%) whereas its dry weight is made of proteins (36% ± 2.3%) followed by lipids (2.9% ± 0.07%) and carbohydrates (2% ± 0.31%). The mucus exerted a natural antibacterial lysozyme-like activity corresponding to 1.14 mg mL-1 of hen egg-white lysozyme and an antioxidant activity corresponding to 483.00 ± 79.22 nmolTE (Trolox equivalent)/mL sample as Trolox Equivalent Antioxidant Capacity (TEAC) and 276.26 ± 50.76 nmolTE/mL sample as Oxygen Radical Absorbance Capacity (ORAC). Therefore, our findings have potential implications due to the ongoing explosion of antibiotic resistant infections and the need to discover antibacterial agents. Additionally, the observed antioxidant activity is intriguing taking into account the need to find natural antioxidants useful for human health.
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Affiliation(s)
- Loredana Stabili
- Istituto di Ricerca sulle Acque, Sede Secondaria Talassografico di Taranto, CNR, Via Roma 3, 74123 Taranto, Italy.
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy.
| | - Margherita Licciano
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy
| | - Adriana Giangrande
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy
| | - Carmela Gerardi
- Istituto di Scienze delle Produzioni Alimentari, U.O.S. di Lecce, via Prov.le Lecce-Monteroni, 73100 Lecce, Italy
| | - Sandra Angelica De Pascali
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy
| | - Francesco Paolo Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Via Prov.le Lecce Monteroni, 73100 Lecce, Italy
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36
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Biochemical and Histological Evaluation of Protective Effect of Betaine in Experimental Varicocele Using Animal Model. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-018-9718-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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37
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Rady MM, Elrys AS, Abo El-Maati MF, Desoky ESM. Interplaying roles of silicon and proline effectively improve salt and cadmium stress tolerance in Phaseolus vulgaris plant. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:558-568. [PMID: 31029029 DOI: 10.1016/j.plaphy.2019.04.025] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/17/2019] [Accepted: 04/18/2019] [Indexed: 05/18/2023]
Abstract
The interplaying defensive roles of silicon (Si) and proline (Pro) in improving growth and yield attributes, physio-biochemical attributes, and antioxidant defense systems in common bean plant grown under saline (NaCl) and/or cadmium (Cd2+) stress were assessed. Seed were sown in plastic pots filled with sand-free ions as a growing medium that watered with a ½-strength Hoagland's nutrient solution. Twenty five days after planting, pots were split into 4 plots; control (no stress), 150 mM NaCl (salt stress), 1.5 mM Cd2+ in CdCl2 (Cd2+ stress), and 100 mM NaCl + 1.0 mM Cd2+ (salt + Cd2+ stress). Four treatments; foliar spray with distilled water, 6 mM Si (in K2SiO3.nH2O) solution, 6 mM Pro solution, and a combination of Si and Pro were allotted under each of the 4 plots. The experimental layout was a completely randomized design with 15 replicates. Compared to control, NaCl or Cd2+ stress significantly (P ≤ 0.05) reduced plant growth and yield attributes, leaf contents of chlorophylls, carotenoids, N, P, and K+, K+/Na+ ratio, RWC, MSI, Pn and Tr, while elevated significantly leaf EL, leaf contents of proline, soluble sugar, glutathione, MDA, Na+, and root, leaf and pod contents of Cd2+. The activities of antioxidant enzymes were also raised. The combined stress (NaCl + Cd2+) was more influential. Addition of Si and/or Pro for common bean plants under NaCl and/or Cd2+ stress significantly enhanced all investigated attributes of physiology, morphology, and biochemistry, and further increased the activities of antioxidant enzymes. Supplementation of Si + Pro was the best treatment having more positive influential, especially reducing the Cd2+ content in Phaseolus vulgaris pods to the limits (0.27 mg kg-1) for legumes. Therefore, this combined treatment is recommended to use for alleviating environmental stress effects, especially salinity and Cd2+ for common bean production.
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Affiliation(s)
- Mostafa M Rady
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt.
| | - Ahmed S Elrys
- Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Mohamed F Abo El-Maati
- Biochemistry Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
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38
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Kinetic and structural analysis of human ALDH9A1. Biosci Rep 2019; 39:BSR20190558. [PMID: 30914451 PMCID: PMC6487263 DOI: 10.1042/bsr20190558] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 01/27/2023] Open
Abstract
Aldehyde dehydrogenases (ALDHs) constitute a superfamily of NAD(P)+-dependent enzymes, which detoxify aldehydes produced in various metabolic pathways to the corresponding carboxylic acids. Among the 19 human ALDHs, the cytosolic ALDH9A1 has so far never been fully enzymatically characterized and its structure is still unknown. Here, we report complete molecular and kinetic properties of human ALDH9A1 as well as three crystal forms at 2.3, 2.9, and 2.5 Å resolution. We show that ALDH9A1 exhibits wide substrate specificity to aminoaldehydes, aliphatic and aromatic aldehydes with a clear preference for γ-trimethylaminobutyraldehyde (TMABAL). The structure of ALDH9A1 reveals that the enzyme assembles as a tetramer. Each ALDH monomer displays a typical ALDHs fold composed of an oligomerization domain, a coenzyme domain, a catalytic domain, and an inter-domain linker highly conserved in amino-acid sequence and folding. Nonetheless, structural comparison reveals a position and a fold of the inter-domain linker of ALDH9A1 never observed in any other ALDH so far. This unique difference is not compatible with the presence of a bound substrate and a large conformational rearrangement of the linker up to 30 Å has to occur to allow the access of the substrate channel. Moreover, the αβE region consisting of an α-helix and a β-strand of the coenzyme domain at the dimer interface are disordered, likely due to the loss of interactions with the inter-domain linker, which leads to incomplete β-nicotinamide adenine dinucleotide (NAD+) binding pocket.
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Harris-Shultz KR, Hayes CM, Knoll JE. Mapping QTLs and Identification of Genes Associated with Drought Resistance in Sorghum. Methods Mol Biol 2019; 1931:11-40. [PMID: 30652280 DOI: 10.1007/978-1-4939-9039-9_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Water limits global agricultural production. Increases in global aridity, a growing human population, and the depletion of aquifers will only increase the scarcity of water for agriculture. Water is essential for plant growth and in areas that are prone to drought, the use of drought-resistant crops is a long-term solution for growing more food for more people with less water. Sorghum is well adapted to hot and dry environments and has been used as a dietary staple for millions of people. Increasing the drought resistance in sorghum hybrids with no impact on yield is a continual objective for sorghum breeders. In this review, we describe the loci, quantitative trait loci (QTLs), or genes that have been identified for traits involved in drought avoidance (water-use efficiency, cuticular wax synthesis, trichome development and morphology, root system architecture) and drought tolerance (compatible solutes, pre- and post-flowering drought tolerance). Many of these identified genes and QTL regions have not been tested in hybrids and the effect of these genes, or their interactions, on yield must be understood in normal and drought-stressed conditions to understand the strength and weaknesses of their utility.
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Affiliation(s)
| | - Chad M Hayes
- Plant Stress and Germplasm Development Research, USDA-ARS, Lubbock, TX, USA
| | - Joseph E Knoll
- Crop Genetics and Breeding Research Unit, USDA-ARS, Tifton, GA, USA
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40
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Sudmalis D, Millah SK, Gagliano MC, Butré CI, Plugge CM, Rijnaarts HHM, Zeeman G, Temmink H. The potential of osmolytes and their precursors to alleviate osmotic stress of anaerobic granular sludge. WATER RESEARCH 2018; 147:142-151. [PMID: 30308373 DOI: 10.1016/j.watres.2018.09.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 06/08/2023]
Abstract
Increasing amounts of saline (waste)water with high concentrations of organic pollutants are generated globally. In the anaerobic (waste)water treatment domain, high salt concentrations are repeatedly reported to inhibit methanogenic activity and strategies to overcome this toxicity are needed. Current research focuses on the use of potential osmolyte precursor compounds for osmotic stress alleviation in granular anaerobic sludges upon exposure to hypersalinity shocks. Glutamic acid, aspartic acid, lysine, potassium, gelatine, and tryptone were tested for their potential to alleviate osmotic stress in laboratory grown and full - scale granular sludge. The laboratory grown granular sludge was adapted to 5 (R5) and 20 (R20) g Na+/L. Full-scale granular sludge was obtained from internal circulation reactors treating tannery (waste)water with influent conductivity of 29.2 (Do) and 14.1 (Li) mS/cm. In batch experiments which focused on specific methanogenic activity (SMA), R5 granular sludge was exposed to a hypersalinity shock of 20 g Na+/L. The granular sludge of Do and Li was exposed to a hypersalinity shock of 10 g Na+/L with sodium acetate as the sole carbon source. The effects on R20 granular sludge were studied at the salinity level to which the sludge was already adapted, namely 20 g Na+/L. Dosing of glutamic acid, aspartic acid, gelatine, and tryptone resulted in increased SMA compared to only acetate fed batches. In batches with added glutamic acid, the SMA increased by 115% (Li), 35% (Do) and 9% (R20). With added aspartic acid, SMA increased by 72% (Li), 26% (Do), 12% (R5) and 7% (R20). The addition of tryptone resulted in SMA increases of 36% (R5), 17% (R20), 179% (Li), and 48% (Do), whereas added gelatine increased the SMA by 30% (R5), 14% (R20), 23% (Li), and 13% (Do). The addition of lysine, meanwhile, gave negative effects on SMA of all tested granular sludges. Potassium at sea water Na/K ratio (27.8 w/w) had a slight positive effect on SMA of Do (7.3%) and Li (10.1%), whereas at double the sea water ratio (13.9% w/w) had no pronounced positive effect. R20 granular sludge was also exposed to hyposalinity shock from 20 down to 5 g Na+/L. Glutamate and N-acetyl-β-lysine were excreted by microbial consortium in anaerobic granular sludge adapted to 20 g Na+/L upon this exposure to hyposalinity. A potential consequence when applying these results is that saline streams containing specific and hydrolysable proteins can be anaerobically treated without additional dosing of osmolytes.
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Affiliation(s)
- D Sudmalis
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands.
| | - S K Millah
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
| | - M C Gagliano
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE, Wageningen, the Netherlands
| | - C I Butré
- Laboratory of Food Chemistry, Wageningen University and Research, Wageningen, the Netherlands
| | - C M Plugge
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE, Wageningen, the Netherlands
| | - H H M Rijnaarts
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
| | - G Zeeman
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
| | - H Temmink
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
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Carrillo-Campos J, Riveros-Rosas H, Rodríguez-Sotres R, Muñoz-Clares RA. Bona fide choline monoxygenases evolved in Amaranthaceae plants from oxygenases of unknown function: Evidence from phylogenetics, homology modeling and docking studies. PLoS One 2018; 13:e0204711. [PMID: 30256846 PMCID: PMC6157903 DOI: 10.1371/journal.pone.0204711] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 09/12/2018] [Indexed: 12/25/2022] Open
Abstract
Few land plants can synthesize and accumulate the osmoprotectant glycine betaine (GB) even though this metabolic trait has major adaptive importance given the prevalence of drought, hypersaline soils or cold. GB is synthesized from choline in two reactions catalyzed by choline monooxygenases (CMOs) and enzymes of the family 10 of aldehyde dehydrogenases (ALDH10s) that gained betaine aldehyde dehydrogenase activity (BADH). Homolog genes encoding CMO and ALDH10 enzymes are present in all known land plant genomes, but since GB-non-accumulators plants lack the BADH-type ALDH10 isozyme, they would be expected to also lack the CMO activity to avoid accumulation of the toxic betaine aldehyde. To explore CMOs substrate specificity, we performed amino acid sequence alignments, phylogenetic analysis, homology modeling and docking simulations. We found that plant CMOs form a monophyletic subfamily within the Rieske/mononuclear non-heme oxygenases family with two clades: CMO1 and CMO2, the latter diverging from CMO1 after gene duplication. CMO1 enzymes are present in all plants; CMO2s only in the Amaranthaceae high-GB-accumulators plants. CMO2s, and particularly their mononuclear non-heme iron domain where the active site is located, evolved at a faster rate than CMO1s, which suggests positive selection. The homology model and docking simulations of the spinach CMO2 enzyme showed at the active site three aromatic residues forming a box with which the trimethylammonium group of choline could interact through cation-π interactions, and a glutamate, which also may interact with the trimethylammonium group through a charge-charge interaction. The aromatic box and the carboxylate have been shown to be critical for choline binding in other proteins. Interestingly, these residues are conserved in CMO2 proteins but not in CMO1 proteins, where two of these aromatic residues are leucine and the glutamate is asparagine. These findings reinforce our proposal that the CMO1s physiological substrate is not choline but a still unknown metabolite.
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Affiliation(s)
- Javier Carrillo-Campos
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Héctor Riveros-Rosas
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Rogelio Rodríguez-Sotres
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Rosario A. Muñoz-Clares
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
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42
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Zhu L, Bloomfield KJ, Hocart CH, Egerton JJG, O'Sullivan OS, Penillard A, Weerasinghe LK, Atkin OK. Plasticity of photosynthetic heat tolerance in plants adapted to thermally contrasting biomes. PLANT, CELL & ENVIRONMENT 2018; 41:1251-1262. [PMID: 29314047 DOI: 10.1111/pce.13133] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/18/2017] [Accepted: 12/18/2017] [Indexed: 06/07/2023]
Abstract
In many biomes, plants are subject to heatwaves, potentially causing irreversible damage to the photosynthetic apparatus. Field surveys have documented global, temperature-dependent patterns in photosynthetic heat tolerance (PHT ); however, it remains unclear if these patterns reflect acclimation in PHT or inherent differences among species adapted to contrasting habitats. To address these unknowns, we quantified seasonal variations in Tcrit (high temperature where minimal chlorophyll-a fluorescence rises rapidly, reflecting disruption to photosystem II) in 62 species native to 6 sites from 5 thermally contrasting biomes across Australia. Tcrit and leaf fatty acid (FA) composition (important for membrane stability) were quantified in three temperature-controlled glasshouses in 20 of those species. Tcrit was greatest at hot field sites and acclimated seasonally (summer > winter, increasing on average 0.34 °C per °C increase in growth temperature). The glasshouse study showed that Tcrit was inherently higher in species from warmer habitats (increasing 0.16 °C per °C increase in origin annual mean maximum temperature) and acclimated to increasing growth temperature (0.24 °C °C-1 ). Variations in Tcrit were positively correlated with the relative abundance of saturated FAs, with FAs accounting for 40% of Tcrit variation. These results highlight the importance of both plastic adjustments and inherent differences determining contemporary continent-wide patterns in PHT .
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Affiliation(s)
- Lingling Zhu
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Building 134, Canberra, Australian Capital Territory, 2601, Australia
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
| | - Keith J Bloomfield
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
| | - Charles H Hocart
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
| | - John J G Egerton
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Building 116, Canberra, Australian Capital Territory, 2601, Australia
| | - Odhran S O'Sullivan
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
| | - Aurore Penillard
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
| | - Lasantha K Weerasinghe
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
- Faculty of Agriculture, University of Peradeniya, Peradeniya, 20400, Sri Lanka
| | - Owen K Atkin
- ARC Centre of Excellence in Plant Energy Biology, Research School of Biology, The Australian National University, Building 134, Canberra, Australian Capital Territory, 2601, Australia
- Division of Plant Sciences, Research School of Biology, The Australian National University, Building 46, Canberra, Australian Capital Territory, 2601, Australia
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43
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Zhao G, He F, Wu C, Li P, Li N, Deng J, Zhu G, Ren W, Peng Y. Betaine in Inflammation: Mechanistic Aspects and Applications. Front Immunol 2018; 9:1070. [PMID: 29881379 PMCID: PMC5976740 DOI: 10.3389/fimmu.2018.01070] [Citation(s) in RCA: 235] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 04/30/2018] [Indexed: 12/12/2022] Open
Abstract
Betaine is known as trimethylglycine and is widely distributed in animals, plants, and microorganisms. Betaine is known to function physiologically as an important osmoprotectant and methyl group donor. Accumulating evidence has shown that betaine has anti-inflammatory functions in numerous diseases. Mechanistically, betaine ameliorates sulfur amino acid metabolism against oxidative stress, inhibits nuclear factor-κB activity and NLRP3 inflammasome activation, regulates energy metabolism, and mitigates endoplasmic reticulum stress and apoptosis. Consequently, betaine has beneficial actions in several human diseases, such as obesity, diabetes, cancer, and Alzheimer's disease.
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Affiliation(s)
- Guangfu Zhao
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Fang He
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Chenlu Wu
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Pan Li
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Nengzhang Li
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Jinping Deng
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, Subtropical Institute of Animal Nutrition and Feed, South China Agricultural University, Guangzhou, Guangdong, China
| | - Guoqiang Zhu
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Wenkai Ren
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, Subtropical Institute of Animal Nutrition and Feed, South China Agricultural University, Guangzhou, Guangdong, China
- Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonoses, Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Yuanyi Peng
- College of Animal Science and Technology, Southwest University, Chongqing, China
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44
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Wani SH, Dutta T, Neelapu NRR, Surekha C. Transgenic approaches to enhance salt and drought tolerance in plants. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.plgene.2017.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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45
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Ortmeyer J, Flörke U, Henkel G, Wilhelm R, Neuba A. A Sophisticated Approach towards a New Class of Copper(I)-Sulfur Cluster Complexes with Imidazolinium-Dithiocarboxylate Ligands. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700328] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jochen Ortmeyer
- Fakultät für Naturwissenschaften; Department Chemie; Fachbereich Anorganische und Analytische Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Ulrich Flörke
- Fakultät für Naturwissenschaften; Department Chemie; Fachbereich Anorganische und Analytische Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Gerald Henkel
- Fakultät für Naturwissenschaften; Department Chemie; Fachbereich Anorganische und Analytische Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - René Wilhelm
- Fakultät für Naturwissenschaften; Department Chemie; Fachbereich Organische Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
| | - Adam Neuba
- Fakultät für Naturwissenschaften; Department Chemie; Fachbereich Anorganische und Analytische Chemie; Universität Paderborn; Warburger Str. 100 33098 Paderborn Germany
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46
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Pandit PR, Fulekar MH, Karuna MSL. Effect of salinity stress on growth, lipid productivity, fatty acid composition, and biodiesel properties in Acutodesmus obliquus and Chlorella vulgaris. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:13437-13451. [PMID: 28386901 DOI: 10.1007/s11356-017-8875-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/20/2017] [Indexed: 05/08/2023]
Abstract
Two microalgae strains including Chlorella vulgaris and Acutodesmus obliquus were grown on BG11 medium with salinity stress ranging from 0.06 to 0.4 M NaCl. Highest lipid content in C. vulgaris and A. obliquus was 49 and 43% in BG11 amended with 0.4 M NaCl. The microalgal strains C. vulgaris and A. obliquus grow better at 0.06 M NaCl concentration than control condition. At 0.06 M NaCl, improved dry biomass content in C. vulgaris and A. obliquus was 0.92 and 0.68 gL-1, respectively. Stress biomarkers like reactive oxygen species, antioxidant enzyme catalase, and ascorbate peroxidase were also lowest at 0.06 M NaCl concentration revealing that both the microalgal strains are well acclimatized at 0.06 M NaCl concentration. The fatty acid composition of the investigated microalgal strains was also improved by increased NaCl concentration. At 0.4 M NaCl, palmitic acid (37%), oleic acid (15.5%), and linoleic acid (20%) were the dominant fatty acids in C. vulgaris while palmitic acid (54%) and stearic acid (26.6%) were major fatty acids found in A. obliquus. Fatty acid profiling of C. vulgaris and A. obliquus significantly varied with salinity concentration. Therefore, the study showed that salt stress is an effective stress that could increase not only the lipid content but also improved the fatty acid composition which could make C. vulgaris and A. obliquus potential strains for biodiesel production.
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Affiliation(s)
- Priti Raj Pandit
- School of Environment and Sustainable Development, Central university of Gujarat, Gandhinagar, Gujarat, India
| | - Madhusudan H Fulekar
- School of Environment and Sustainable Development, Central university of Gujarat, Gandhinagar, Gujarat, India.
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47
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Moradi P, Ford-Lloyd B, Pritchard J. Metabolomic approach reveals the biochemical mechanisms underlying drought stress tolerance in thyme. Anal Biochem 2017; 527:49-62. [PMID: 28209457 DOI: 10.1016/j.ab.2017.02.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 01/27/2017] [Accepted: 02/10/2017] [Indexed: 01/22/2023]
Abstract
Thyme as a perennial herb has been recognized globally for its antimicrobial, antiseptic and spasmolytic effects. In this investigation, we have used non-targeted metabolite and volatile profiling combined with the morpho-physiological parameters in order to understand the responses at the metabolite and physiological level in drought sensitive and tolerant thyme plant populations. The results at the metabolic level identified the significantly affected metabolites. Significant metabolites belonging to different chemical classes consisting amino acids, carbohydrates, organic acids and lipids have been compared in tolerant and sensitive plants. These compounds may take a role through mechanisms including osmotic adjustment, ROS scavenging, cellular components protection and membrane lipid changes, hormone inductions in which the key metabolites were proline, betain, mannitol, sorbitol, ascorbate, jasmonate, unsaturated fatty acids and tocopherol. Regarding with volatile profiling, sensitive plants showed an increased-then-decreased trend at major terpenes apart from alpha-cubebene and germacrene-D. In contrast, tolerant populations had unchanged terpenes during the water stress period with an elevation at last day. These results suggesting that the two populations are employing different strategies. The combination of metabolite profiling and physiological parameters assisted to understand precisely the mechanisms of plant response at volatile metabolome level.
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Affiliation(s)
- Parviz Moradi
- Research Division of Natural Resources, Zanjan Agricultural and Natural Resources Research and Education Centre, AREEO, Zanjan, Iran.
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48
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Mohamed Ahmed IA, Eltayeb MM, Habora ME, Eltayeb AE, Arima J, Mori N, Taniguchi T, Yamanaka N. Identification of the key genes involved in the degradation of homocholine by Pseudomonas sp. strain A9 by using suppression subtractive hybridization. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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49
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Maji T, Banerjee S, Bose A, Mandal TK. A stimuli-responsive methionine-based zwitterionic methacryloyl sulfonium sulfonate monomer and the corresponding antifouling polymer with tunable thermosensitivity. Polym Chem 2017. [DOI: 10.1039/c7py00460e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This report describes a dual pH- and thermo-responsive methionine-based zwitterionic methacryloyl sulfonium sulfonate monomer and the corresponding zwitterionic antifouling polymer with ion-induced tunable thermosensitivity.
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Affiliation(s)
- Tanmoy Maji
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Sanjib Banerjee
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Avijit Bose
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Tarun K. Mandal
- Polymer Science Unit
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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50
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Mollo E, Garson MJ, Polese G, Amodeo P, Ghiselin MT. Taste and smell in aquatic and terrestrial environments. Nat Prod Rep 2017; 34:496-513. [DOI: 10.1039/c7np00008a] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The review summarizes results up to 2017 on chemosensory cues occurring in both aquatic and terrestrial environments.
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Affiliation(s)
- E. Mollo
- National Research Council of Italy
- Institute of Biomolecular Chemistry
- Italy
| | - M. J. Garson
- University of Queensland
- School of Chemistry and Molecular Sciences
- Brisbane Q 4072
- Australia
| | - G. Polese
- University of Naples “Federico II”
- Department of Biology
- 80126 Naples
- Italy
| | - P. Amodeo
- National Research Council of Italy
- Institute of Biomolecular Chemistry
- Italy
| | - M. T. Ghiselin
- California Academy of Sciences
- Department of Invertebrate Zoology
- San Francisco
- USA
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