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Pan C, Zhang M, Chen J, Lu H, Zhao X, Chen X, Wang L, Guo P, Liu S. miR397 regulates cadmium stress response by coordinating lignin polymerization in the root exodermis in Kandelia obovata. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134313. [PMID: 38669927 DOI: 10.1016/j.jhazmat.2024.134313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/08/2024] [Accepted: 04/14/2024] [Indexed: 04/28/2024]
Abstract
Secondary lignification of the root exodermis of Kandelia obovata is crucial for its response to adversity such as high salinity and anaerobic environment, and this lignification is also effective in blocking cadmium transport to the roots. However, how the differences in lignification of root exodermis at different developmental stages respond to Cd stress and its regulatory mechanisms have not been revealed. In this study, after analyzing the root structure and cell wall thickness using a Phenom scanning electron microscope as well as measuring cadmium content in the root cell wall, we found that the exodermis of young and mature roots of K. obovata responded to Cd stress through the polymerization of different lignin monomers, forming two different mechanisms: chelation and blocking. Through small RNA sequencing, RLM-5'-RACE and dual luciferase transient expression system, we found that miR397 targets and regulates KoLAC4/17/7 expression. The expression of KoLAC4/17 promoted the accumulation of guaiacyl lignin during lignification and enhanced the binding of cadmium to the cell wall. Meanwhile, KoLAC7 expression promotes the accumulation of syringyl lignin during lignification, which enhances the obstruction of cadmium and improves the tolerance to cadmium. These findings enhance our understanding of the molecular mechanisms underlying the differential lignification of the root exodermis of K. obovata in response to cadmium stress, and provide scientific guidance for the conservation of mangrove forests under heavy metal pollution.
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Affiliation(s)
- Chenglang Pan
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China; Technology Innovation Center for Monitoringand Restoration Engineering of Ecological Fragile Zonein Southeast China, Ministry of Natural Resources, Fuzhou 350001, China.
| | - Mingxiong Zhang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China; College of Resource and Environmental Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jianming Chen
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China; Technology Innovation Center for Monitoringand Restoration Engineering of Ecological Fragile Zonein Southeast China, Ministry of Natural Resources, Fuzhou 350001, China
| | - Haoliang Lu
- Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, PR China
| | - Xuemei Zhao
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China
| | - Xiaofeng Chen
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China
| | - Lu Wang
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China; Technology Innovation Center for Monitoringand Restoration Engineering of Ecological Fragile Zonein Southeast China, Ministry of Natural Resources, Fuzhou 350001, China
| | - Pingping Guo
- Fujian Minjiang River Estuary Wetland National Nature Reserve Administrative Office, Fuzhou 350001, China
| | - Shuyu Liu
- Fujian Key Laboratory on Conservation and Sustainable Utilization of Marine Biodiversity, Fuzhou Institute of Oceanography, Minjiang University, Fuzhou 350108, China; College of Resource and Environmental Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Yang H, Jia X, Gao T, Gong S, Xia L, Zhang P, Qi Y, Liu S, Yu Y, Wang W. The CsmiR397a- CsLAC17 module regulates lignin biosynthesis to balance the tenderness and gray blight resistance in young tea shoots. HORTICULTURE RESEARCH 2024; 11:uhae085. [PMID: 38799128 PMCID: PMC11116903 DOI: 10.1093/hr/uhae085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/20/2024] [Indexed: 05/29/2024]
Abstract
Lignin accumulation can enhance the disease resistance of young tea shoots (Camellia sinensis). It also greatly reduces their tenderness, which indirectly affects the quality and yield of tea. Therefore, the regulation of lignin biosynthesis appears to be an effective way to balance tenderness and disease resistance in young tea shoots. In this study, we identified a laccase gene, CsLAC17, that is induced during tenderness reduction and gray blight infection in young tea shoots. Overexpression of CsLAC17 significantly increased the lignin content in transgenic Arabidopsis, enhancing their resistance to gray blight and decreasing stem tenderness. In addition, we found that CsLAC17 was negatively regulated by the upstream CsmiR397a by 5'-RLM-RACE, dual-luciferase assay, and transient expression in young tea shoots. Interestingly, the expression of CsmiR397a was inhibited during tenderness reduction and gray blight infection of young tea shoots. Overexpression of CsmiR397a reduced lignin accumulation, resulting in decreased resistance to gray blight and increased stem tenderness in transgenic Arabidopsis. Furthermore, the transient overexpression of CsmiR397a and CsLAC17 in tea leaves directly confirms the function of the CsmiR397a-CsLAC17 module in lignin biosynthesis and its effect on disease resistance. These results suggest that the CsmiR397a-CsLAC17 module is involved in balancing tenderness and gray blight resistance in young tea shoots by regulating lignin biosynthesis.
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Affiliation(s)
- Hongbin Yang
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xinyue Jia
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Tong Gao
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Siyu Gong
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Linxuan Xia
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Peiling Zhang
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yuying Qi
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shuyuan Liu
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Youben Yu
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Weidong Wang
- College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
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Khan MKU, Zhang X, Ma Z, Huang M, Yang C, Wang X, Liu M, Peng J. Contribution of the LAC Genes in Fruit Quality Attributes of the Fruit-Bearing Plants: A Comprehensive Review. Int J Mol Sci 2023; 24:15768. [PMID: 37958753 PMCID: PMC10650289 DOI: 10.3390/ijms242115768] [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: 10/02/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
Laccase genes produce laccase enzymes that play a crucial role in the production of lignin and oxidation reactions within plants. Lignin is a complex polymer that provides structure and toughness to the cell walls of numerous fruit plants. The LAC genes that encode laccase enzymes play vital roles in plant physiology, including the synthesis of pigments like PA that contribute to the colors of fruits, and in defending against pathogens and environmental stresses. They are crucial for fruit development, ripening, structural maintenance in plants, and adaptation to various environmental factors. As such, these genes and enzymes are essential for plant growth and development, as well as for various biotechnological applications in environmental remediation and industrial processes. This review article emphasizes the significance of genes encoding laccase enzymes during fruit growth, specifically pertaining to the strengthening of the endocarp through lignification. This process is crucial for ensuring fruit defense and optimizing seed scattering. The information gathered in this article will aid breeders in producing future fruit-bearing plants that are resistant to disease, cost-effective, and nutrient-rich.
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Affiliation(s)
- Muhammad Khalil Ullah Khan
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Xiaojie Zhang
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Zitan Ma
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Mingxia Huang
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Ce Yang
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Xiaoming Wang
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
| | - Mengjun Liu
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
- Research Center of Chinese jujube, Hebei Agricultural University, Baoding 071001, China
| | - Jianying Peng
- College of Horticulture, Hebei Agricultural University, Baoding 071001, China; (M.K.U.K.); (X.Z.); (Z.M.); (M.H.); (C.Y.); (X.W.)
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Li S, Yan L, Venuste M, Xu F, Shi L, White PJ, Wang X, Ding G. A critical review of plant adaptation to environmental boron stress: Uptake, utilization, and interplay with other abiotic and biotic factors. CHEMOSPHERE 2023; 338:139474. [PMID: 37442392 DOI: 10.1016/j.chemosphere.2023.139474] [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: 04/19/2023] [Revised: 07/09/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
Boron (B) is an indispensable mineral nutrient for plants and is primarily taken up by roots mainly in the form of boric acid (H3BO3). Recently, research shows that B has a significant impact on plant growth and productivity due to its narrow range between deficiency and toxicity. Fertilization and other procedures to address B stress (deficiency and toxicity) in soils are generally expensive and time-consuming. Over the past 20 years, substantial studies have been conducted to investigate the mechanisms underlying B acquisition and the molecular regulation of B stress in plants. In this review, we discuss the effects of B stress on plant growth, physiology, and biochemistry, and finding on enhancing plant tolerance from the perspective of plant B uptake, transport, and utilization. We also refer to recent results demonstrating the interactions among B and other biological and abiotic factors, including nitrogen, phosphorus, aluminum, and microorganisms. Finally, emerging trends in this field are discussed.
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Affiliation(s)
- Shuang Li
- College of Resources and Environment/Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Lei Yan
- Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao, 266071, China.
| | - Munyaneza Venuste
- College of Resources and Environment/Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Fangsen Xu
- College of Resources and Environment/Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Lei Shi
- College of Resources and Environment/Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, China.
| | - Philip J White
- The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK.
| | - Xu Wang
- Institute of Quality Standard and Monitoring Technology for Agro-products of Guangdong Academy of Agricultural Sciences, China.
| | - Guangda Ding
- College of Resources and Environment/Microelement Research Center/Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, 430070, Wuhan, China.
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Yang Y, He Y, Lv S, Zhu H, Wang T, Wang G, Hong N, Wang L. The PcMYB44-mediated miR397-PcLACs module regulates defence-induced lignification in pear resistance to fungal disease. MOLECULAR PLANT PATHOLOGY 2023; 24:1107-1125. [PMID: 37312259 PMCID: PMC10423334 DOI: 10.1111/mpp.13357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/11/2023] [Accepted: 05/14/2023] [Indexed: 06/15/2023]
Abstract
Diseases caused by Alternaria alternata and Botryosphaeria dothidea diminish pear yield and quality, and restrict the pear agricultural industry. Lignification is a conserved mechanism for plant resistance against pathogen invasion. The regulatory mechanisms underlying defence-induced lignification in pear in response to fungal pathogen infection remain unknown. In this study, analysis of lignification level and lignin content in pear revealed that A. alternata and B. dothidea induced lignification, and transcriptomics showed that lignin biosynthesis was affected. To explore whether laccases (LACs) mediated by miR397 regulate lignification in pear, we investigated the role of PcmiR397 in repressing the expression of PcLACs using 5'-RNA ligase-mediated-RACE and co-transformation in tobacco. Opposite expression patterns for PcmiR397 and PcLAC target genes were observed in pear in response to pathogens. Transient transformation in pear demonstrated that silencing PcmiR397 and overexpressing a single PcLAC enhanced resistance to pathogens via lignin synthesis. To further reveal the mechanism underpinning the PcMIR397 response of pear to pathogens, the PcMIR397 promoter was analysed, and pMIR397-1039 was found to be inhibited by pathogen infection. The transcription factor PcMYB44 was up-regulated, and it bound to the PcMIR397 promoter and inhibited transcription following pathogen infection. The results demonstrate the role of PcmiR397-PcLACs in broad-spectrum resistance to fungal disease, and the potential role of PcMYB44 involved in the miR397-PcLAC module in regulating defence-induced lignification. The findings provide valuable candidate gene resources and guidance for molecular breeding to improve resistance to fungal disease in pear.
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Affiliation(s)
- Yuekun Yang
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Ying He
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Shamei Lv
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Haodong Zhu
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Tingting Wang
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Guoping Wang
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Ni Hong
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
| | - Liping Wang
- College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
- Key Laboratory of Plant Pathology of Hubei ProvinceHuazhong Agricultural UniversityWuhanChina
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Shi Y, Huang C, Wang X, Jin W, Wang M, Yu H. Physiological and iTRAQ-based quantitative proteomics analyses reveal the similarities and differences in stress responses between short-term boron deficiency and toxicity in wheat roots. Mol Biol Rep 2023; 50:3617-3632. [PMID: 36795283 DOI: 10.1007/s11033-022-08123-4] [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: 07/26/2022] [Accepted: 11/15/2022] [Indexed: 02/17/2023]
Abstract
BACKGROUND Boron (B) is a trace element that is essential for normal wheat development, such as root growth. In wheat, roots are important organs that absorb nutrients and water. However, at present, there is insufficient research on the molecular mechanism underlying how short-term B stress affects wheat root growth. METHODS AND RESULTS Here, the optimal concentration of B for wheat root growth was determined, and the proteomic profiles of roots under short-term B deficiency and toxicity were analyzed and compared by the isobaric tag for relative and absolute quantitation (iTRAQ) technique. A total of 270 differentially abundant proteins (DAPs) that accumulated in response to B deficiency and 263 DAPs that accumulated in response to B toxicity were identified. Global expression analysis revealed that ethylene, auxin, abscisic acid (ABA), and Ca2+ signals were involved in the responses to these two stresses. Under B deficiency, DAPs related to auxin synthesis or signaling and DAPs involved in calcium signaling increased in abundance. In striking contrast, auxin and calcium signals were repressed under B toxicity. Twenty-one DAPs were detected under both conditions, including RAN1 that played a core role in the auxin and calcium signals. Overexpression of RAN1 was shown to confer plant resistance to B toxicity by activating auxin response genes, including TIR and those identified by iTRAQ in this research. Moreover, growth of the primary roots of tir mutant was significantly inhibited under B toxicity. CONCLUSION Taken together, these results indicate that some connections were present between RAN1 and the auxin signaling pathway under B toxicity. Therefore, this research provides data for improving the understanding of the molecular mechanism underlying the response to B stress.
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Affiliation(s)
- Yongchun Shi
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Chenhan Huang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Xiaoran Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Weihuan Jin
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Mengqing Wang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China
| | - Haidong Yu
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, Henan, China.
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Bai Y, Ali S, Liu S, Zhou J, Tang Y. Characterization of plant laccase genes and their functions. Gene 2023; 852:147060. [PMID: 36423777 DOI: 10.1016/j.gene.2022.147060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
Laccase is a copper-containing polyphenol oxidase found in different organisms. The multigene family that encodes laccases is widely distributed in plant genomes. Plant laccases oxidize monolignols to produce lignin which is important for plant growth and stress responses. Industrial applications of fungal and bacterial laccases are extensively explored and addressed. Recently many studies have focused on the significance of plant laccase, particularly in crop yield, and its functions in different environmental conditions. This review summarizes the transcriptional and posttranscriptional regulation of plant laccase genes and their functions in plant growth and development. It especially describes the responses of laccase genes to various stresses and their contributions to plant biotic and abiotic stress resistance. In-depth explanations and scientific advances will serve as foundations for research into plant laccase genes' function, mechanism, and possible applications.
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Affiliation(s)
- Yongsheng Bai
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Shahid Ali
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuai Liu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi 710003, China
| | - Jiajie Zhou
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Yulin Tang
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China.
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8
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The Citrus Laccase Gene CsLAC18 Contributes to Cold Tolerance. Int J Mol Sci 2022; 23:ijms232314509. [PMID: 36498836 PMCID: PMC9737282 DOI: 10.3390/ijms232314509] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022] Open
Abstract
Plant laccases, as multicopper oxidases, play an important role in monolignol polymerization, and participate in the resistance response of plants to multiple biotic/abiotic stresses. However, little is currently known about the role of laccases in the cold stress response of plants. In this study, the laccase activity and lignin content of C. sinensis leaves increased after the low-temperature treatment, and cold treatment induced the differential regulation of 21 CsLACs, with 15 genes being upregulated and 6 genes being downregulated. Exceptionally, the relative expression level of CsLAC18 increased 130.17-fold after a 48-h treatment. The full-length coding sequence of CsLAC18 consists of 1743 nucleotides and encodes a protein of 580 amino acids, and is predominantly expressed in leaves and fruits. CsLAC18 was phylogenetically related to AtLAC17, and was localized in the cell membrane. Overexpression of CsLAC18 conferred enhanced cold tolerance on transgenic tobacco; however, virus-induced gene silencing (VIGS)-mediated suppression of CsLAC18 in Poncirus trifoliata significantly impaired resistance to cold stress. As a whole, our findings revealed that CsLAC18 positively regulates a plant's response to cold stress, providing a potential target for molecular breeding or gene editing.
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Jing J, Yang P, Wang Y, Qu Q, An J, Fu B, Hu X, Zhou Y, Hu T, Cao Y. Identification of Competing Endogenous RNAs (ceRNAs) Network Associated with Drought Tolerance in Medicago truncatula with Rhizobium Symbiosis. Int J Mol Sci 2022; 23:14237. [PMID: 36430715 PMCID: PMC9696283 DOI: 10.3390/ijms232214237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022] Open
Abstract
Drought, bringing the risks of agricultural production losses, is becoming a globally environmental stress. Previous results suggested that legumes with nodules exhibited superior drought tolerance compared with the non-nodule group. To investigate the molecular mechanism of rhizobium symbiosis impacting drought tolerance, transcriptome and sRNAome sequencing were performed to identify the potential mRNA-miRNA-ncRNA dynamic network. Our results revealed that seedlings with active nodules exhibited enhanced drought tolerance by reserving energy, synthesizing N-glycans, and medicating systemic acquired resistance due to the early effects of symbiotic nitrogen fixation (SNF) triggered in contrast to the drought susceptible with inactive nodules. The improved drought tolerance might be involved in the decreased expression levels of miRNA such as mtr_miR169l-5p, mtr_miR398b, and mtr_miR398c and its target genes in seedlings with active nodules. Based on the negative expression pattern between miRNA and its target genes, we constructed an mRNA-miR169l-ncRNA ceRNA network. During severe drought stress, the lncRNA alternative splicings TCONS_00049507 and TCONS_00049510 competitively interacted with mtr_miR169l-5p, which upregulated the expression of NUCLEAR FACTOR-Y (NF-Y) transcription factor subfamily NF-YA genes MtNF-YA2 and MtNF-YA3 to regulate their downstream drought-response genes. Our results emphasized the importance of SNF plants affecting drought tolerance. In conclusion, our work provides insight into ceRNA involvement in rhizobium symbiosis contributing to drought tolerance and provides molecular evidence for future study.
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Affiliation(s)
- Jiaxian Jing
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Peizhi Yang
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Yue Wang
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Qihao Qu
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Jie An
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
- State Key Laboratory of Agrobiotechnology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100083, China
| | - Bingzhe Fu
- School of Agriculture, Ningxia University, Yinchuan 750021, China
| | - Xiaoning Hu
- Shaanxi Academy of Forestry, Xi’an 710082, China
| | - Yi Zhou
- School of Agriculture Food and Wine, The University of Adelaide, Waite Campus, Urrbrae, SA 5064, Australia
| | - Tianming Hu
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Yuman Cao
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
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Yang LT, Pan JF, Hu NJ, Chen HH, Jiang HX, Lu YB, Chen LS. Citrus Physiological and Molecular Response to Boron Stresses. PLANTS (BASEL, SWITZERLAND) 2021; 11:40. [PMID: 35009043 PMCID: PMC8747704 DOI: 10.3390/plants11010040] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Since the essentiality of boron (B) to plant growth was reported nearly one century ago, the implication of B in physiological performance, productivity and quality of agricultural products, and the morphogenesis of apical meristem in plants has widely been studied. B stresses (B deficiency and toxicity), which lead to atrophy of canopy and deterioration of Citrus fruits, have long been discovered in citrus orchards. This paper reviews the research progress of B stresses on Citrus growth, photosynthesis, light use efficiency, nutrient absorption, organic acid metabolism, sugar metabolism and relocation, and antioxidant system. Moreover, the beneficial effects of B on plant stress tolerance and further research in this area were also discussed.
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Affiliation(s)
- Lin-Tong Yang
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
| | - Jun-Feng Pan
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
| | - Neng-Jing Hu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
| | - Huan-Huan Chen
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
| | - Huan-Xin Jiang
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
| | - Yi-Bin Lu
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
| | - Li-Song Chen
- College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (L.-T.Y.); (J.-F.P.); (N.-J.H.); (H.-H.C.); (Y.-B.L.)
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