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Yuan XQ, Liu YY, Wang SC, Lu YQ, Li YJ, Chen JQ, Duan CQ. Trifolium repens L. recruits root-associated Microbacterium species to adapt to heavy metal stress in an abandoned Pb-Zn mining area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174057. [PMID: 38914340 DOI: 10.1016/j.scitotenv.2024.174057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 06/26/2024]
Abstract
Root-associated microbiota provide great fitness to hosts under environmental stress. However, the underlying microecological mechanisms controlling the interaction between heavy metal-stressed plants and the microbiota are poorly understood. In this study, we screened and isolated representative amplicon sequence variants (strain M4) from rhizosphere soil samples of Trifolium repens L. growing in areas with high concentrations of heavy metals. To investigate the microecological mechanisms by which T. repens adapts to heavy metal stress in abandoned mining areas, we conducted potting experiments, bacterial growth promotion experiments, biofilm formation experiments, and chemotaxis experiments. The results showed that high concentrations of heavy metals significantly altered the rhizosphere bacterial community structure of T. repens and significantly enriched Microbacterium sp. Strain M4 was demonstrated to significantly increased the biomass and root length of T. repens under heavy metal stress. Additionally, L-proline and stigmasterol could promote bacterial growth and biofilm formation and induce chemotaxis for strain M4, suggesting that they are key rhizosphere secretions of T. repens for Microbacterium sp. recruitment. Our results suggested that T. repens adapted the heavy metal stress by reshaping rhizosphere secretions to modify the rhizosphere microbiota.
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Affiliation(s)
- Xin-Qi Yuan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming 650091, China
| | - Yi-Yi Liu
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Southwestern United Graduate School & Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China
| | - Si-Chen Wang
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming 650091, China
| | - Ya-Qi Lu
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Southwestern United Graduate School & Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China
| | - Yin-Jie Li
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming 650091, China
| | - Jin-Quan Chen
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Southwestern United Graduate School & Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China.
| | - Chang-Qun Duan
- Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Central Yunnan Field Scientific Station for Restoration of Ecological Function & Yunnan International Joint Research Center of Plateau Lake Ecological Restoration and Watershed Management, Yunnan Think Tank for Ecological Civilization Construction, Yunnan University, Kunming 650091, China; Southwestern United Graduate School & Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China.
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Wu X, Yang Y, Zhang H. Microbial fortification of pharmacological metabolites in medicinal plants. Comput Struct Biotechnol J 2023; 21:5066-5072. [PMID: 37867972 PMCID: PMC10589376 DOI: 10.1016/j.csbj.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/24/2023] Open
Abstract
Medicinal plants are rich in secondary metabolites with beneficial pharmacological effects. The production of plant secondary metabolites is subjected to the influences by environmental factors including the plant-associated microbiome, which is crucial to the host's fitness and survival. As a result, research interests are increasing in exploiting microbial capacities for enhancing plant production of pharmacological metabolites. A growing body of recent research provides accumulating evidence in support of developing microbe-based tools for achieving this objective. This mini review presents brief summaries of recent studies on medicinal plants that demonstrate microbe-augmented production of pharmacological terpenoids, polyphenols, and alkaloids, followed by discussions on some key questions beyond the promising observations. Explicit molecular insights into the underlying mechanisms will enhance microbial applications for metabolic fortification in medicinal plants.
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Affiliation(s)
- Xiaoxuan Wu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Yang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
| | - Huiming Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China
- Nanchang Institute of Industrial Innovation, Chinese Academy of Sciences, Nanchang 330224, China
- Jiangxi Center for Innovation and Incubation of Industrial Technologies, Chinese Academy of Sciences, Nanchang 330200, China
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Petrushin IS, Vasilev IA, Markova YA. Drought Tolerance of Legumes: Physiology and the Role of the Microbiome. Curr Issues Mol Biol 2023; 45:6311-6324. [PMID: 37623217 PMCID: PMC10453936 DOI: 10.3390/cimb45080398] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 08/26/2023] Open
Abstract
Water scarcity and global warming make drought-tolerant plant species more in-demand than ever. The most drastic damage exerted by drought occurs during the critical growth stages of seed development and reproduction. In the course of their evolution, plants form a variety of drought-tolerance mechanisms, including recruiting beneficial microorganisms. Legumes (one of the three largest groups of higher plants) have unique features and the potential to adapt to abiotic stress. The available literature discusses the genetic (breeding) and physiological aspects of drought tolerance in legumes, neglecting the role of the microbiome. Our review aims to fill this gap: starting with the physiological mechanisms of legume drought adaptation, we describe the symbiotic relationship of the plant host with the microbial community and its role in facing drought. We consider two types of studies related to microbiomes in low-water conditions: comparisons and microbiome engineering (modulation). The first type of research includes diversity shifts and the isolation of microorganisms from the various plant niches to which they belong. The second type focuses on manipulating the plant holobiont through microbiome engineering-a promising biotech strategy to improve the yield and stress-resistance of legumes.
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Affiliation(s)
- Ivan S. Petrushin
- Siberian Institute of Plant Physiology and Biochemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033, Russia; (I.A.V.); (Y.A.M.)
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Aloo BN, Dessureault-Rompré J, Tripathi V, Nyongesa BO, Were BA. Signaling and crosstalk of rhizobacterial and plant hormones that mediate abiotic stress tolerance in plants. Front Microbiol 2023; 14:1171104. [PMID: 37455718 PMCID: PMC10347528 DOI: 10.3389/fmicb.2023.1171104] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023] Open
Abstract
Agricultural areas exhibiting numerous abiotic stressors, such as elevated water stress, temperatures, and salinity, have grown as a result of climate change. As such, abiotic stresses are some of the most pressing issues in contemporary agricultural production. Understanding plant responses to abiotic stressors is important for global food security, climate change adaptation, and improving crop resilience for sustainable agriculture, Over the decades, explorations have been made concerning plant tolerance to these environmental stresses. Plant growth-promoting rhizobacteria (PGPR) and their phytohormones are some of the players involved in developing resistance to abiotic stress in plants. Several studies have investigated the part of phytohormones in the ability of plants to withstand and adapt to non-living environmental factors, but very few have focused on rhizobacterial hormonal signaling and crosstalk that mediate abiotic stress tolerance in plants. The main objective of this review is to evaluate the functions of PGPR phytohormones in plant abiotic stress tolerance and outline the current research on rhizobacterial hormonal communication and crosstalk that govern plant abiotic stress responses. The review also includes the gene networks and regulation under diverse abiotic stressors. The review is important for understanding plant responses to abiotic stresses using PGPR phytohormones and hormonal signaling. It is envisaged that PGPR offer a useful approach to increasing plant tolerance to various abiotic stresses. However, further studies can reveal the unclear patterns of hormonal interactions between plants and rhizobacteria that mediate abiotic stress tolerance.
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Affiliation(s)
- B. N. Aloo
- Department of Biological Sciences, University of Eldoret, Eldoret, Kenya
| | | | - V. Tripathi
- Department of Biotechnology, Graphic Era (Deemed to be University), Dehradun, Uttarakhand, India
| | - B. O. Nyongesa
- Department of Biological Sciences, University of Eldoret, Eldoret, Kenya
| | - B. A. Were
- Department of Biological Sciences, University of Eldoret, Eldoret, Kenya
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Huang X, Tang Q, Li Q, Lin H, Li J, Zhu M, Liu Z, Wang K. Integrative analysis of transcriptome and metabolome reveals the mechanism of foliar application of Bacillus amyloliquefaciens to improve summer tea quality (Camellia sinensis). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 185:302-313. [PMID: 35728422 DOI: 10.1016/j.plaphy.2022.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 05/30/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Bacillus amyloliquefaciens is a promising microbial agent for quality improvement in crops; however, the effects of B. amyloliquefaciens biofertilizers on tea leaf metabolites are relatively unknown. Herein, a combination of metabolome profiling and transcriptome analysis was employed to investigate the effects of foliar spraying with B. amyloliquefaciens biofertilizers on tea leaf quality. The tea polyphenol to amino acid ratio (TP/AA), catechin, and caffeine levels decreased, but theanine level increased in tea leaves after foliar spraying with B. amyloliquefaciens. The differentially accumulated metabolites included flavonoids, phenolic acids, organic acids, amino acids, and carbohydrates. The decrease in catechin was correlated with the catechin/flavonoid biosynthesis pathway. The AMPD gene was highly associated with caffeine content, while the GOGAT gene was associated with theanine accumulation. Foliar spraying with B. amyloliquefaciens biofertilizers may improve summer tea quality. Our findings provide a basis for the application of B. amyloliquefaciens biofertilizers in tea plants and new insights on summer tea leaf resource utilization.
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Affiliation(s)
- Xiangxiang Huang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Qian Tang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Qin Li
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Haiyan Lin
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Juan Li
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Mingzhi Zhu
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Zhonghua Liu
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
| | - Kunbo Wang
- National Research Center of Engineering and Technology for Utilization of Botanical Functional Ingredients & Hunan Co-innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, 410128, China; Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, 410128, China.
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Trypanosoma brucei brucei Induced Hypoglycaemia Depletes Hepatic Glycogen and Altered Hepatic Hexokinase and Glucokinase Activities in Infected Mice. Acta Parasitol 2022; 67:1097-1106. [PMID: 35476260 DOI: 10.1007/s11686-022-00550-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/04/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Little progress has been made in understanding the effect of Trypanosoma brucei brucei infection that was allowed to run its course without treatment on human and animal carbohydrate metabolism even though most of the symptoms associated with the disease can be clearly linked with interference with host energy generation. The present study therefore assessed the course of untreated Trypanosoma brucei brucei infection on hepatic glycogen, hepatic hexokinase and glucokinase activities. METHODS Mice were grouped into two: control and infected group. Trypanosomiasis was induced by intraperitoneal inoculation of 1 × 104 parasites/mice in 0.3 ml of phosphate saline glucose. The infection was allowed to run its course until the first mortality was recorded with all the mice showing chronic symptoms of the second stage of the disease before the research was terminated. Blood and liver samples were collected from the mice in each group for the assessment of hepatic glycogen and total protein, hepatic hexokinase and glucokinase activities, liver biomarkers, blood glucose and protein with packed cell volume. RESULTS The infection resulted in decrease in blood glucose, hepatic glycogen, liver protein, PCV, hepatic hexokinase and glucokinase activities, but increase in serum total protein and liver biomarkers. CONCLUSION Trypanosomiasis negatively affects hepatic integrity, resulting in the depletion of hepatic glycogen content and suppression of both hepatic hexokinase and glucokinase activities. The suppression of hepatic hexokinase and glucokinase activities suggested that trypanosomiasis affected the oxidation of glucose and host energy generation via glycolysis. This probably denied the host of the needed energy which is likely the reason for early death in untreated African trypanosomiasis.
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Wang Y, Li H. Gut microbiota modulation: a tool for the management of colorectal cancer. J Transl Med 2022; 20:178. [PMID: 35449107 PMCID: PMC9022293 DOI: 10.1186/s12967-022-03378-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/03/2022] [Indexed: 12/19/2022] Open
Abstract
Colorectal cancer (CRC) is the second cause of cancer death and the third most frequently diagnosed cancer. Besides the lifestyle, genetic and epigenetic alterations, and environmental factors, gut microbiota also plays a vital role in CRC development. The interruption of the commensal relationship between gut microbiota and the host could lead to an imbalance in the bacteria population, in which the pathogenic bacteria become the predominant population in the gut. Different therapeutic strategies have been developed to modify the gut immune system, prevent pathogen colonization, and alter the activity and composition of gut microbiota, such as prebiotics, probiotics, postbiotics, antibiotics, and fecal microbiota transplantation (FMT). Even though the employed strategies exhibit promising results, their translation into the clinic requires evaluating potential implications and risks, as well as assessment of their long-term effects. This study was set to review the gut microbiota imbalances and their relationship with CRC and their effects on CRC therapy, including chemotherapy and immunotherapy. More importantly, we reviewed the strategies that have been used to modulate gut microbiota, their impact on the treatment of CRC, and the challenges of each strategy.
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Affiliation(s)
- Yan Wang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, 110004, China
| | - Hui Li
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
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