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Ma F, Zou Y, Chen X, Ma L, Ma R. Evolution, characterization, and expression profile of Egl-9 family hypoxia-inducible factor ( egln) in rainbow trout ( Oncorhynchus mykiss) under hypoxia stress. Anim Biotechnol 2023; 34:1753-1762. [PMID: 35289728 DOI: 10.1080/10495398.2022.2047994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Egl-9 family hypoxia-inducible factor (egln), an oxygen-sensing enzyme family, has been thoroughly characterized in mammals and certain fishes, but there is few research on its involvement in reproductive development and hypoxic stress in rainbow trout. In this study, we investigated the gene structure, physicochemical properties, and evolutionary connection of the egln gene family. The expression profile of egln gene family and their regulatory mechanism were explored using bioinformatics analysis and hypoxia treatment experiments. Five egln genes were discovered in the rainbow trout genome in this investigation (egln1, egln2a, egln2b, egln3a, and egln3b). Domain prediction revealed that all egln proteins have p4hc conserved domains, and phylogenetic analysis revealed that rainbow trout egln2 and egln3 were closely related to Atlantic salmon. The results of real-time quantitative PCR (RT-qPCR) showed that egln genes were generally expressed in all detected tissues, and higher in the ovary, testis, and brain in normoxia. Under hypoxia, the expression level of eglns was significantly down-regulated in most tissues except the liver. Our research contributes to future research on the functional properties of egln genes, as well as the evolution of teleosts and the impact of hypoxia on biological immunity.
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Affiliation(s)
- Fang Ma
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, Tianshui, Gansu, China
| | - Yali Zou
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, Tianshui, Gansu, China
| | - Xin Chen
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, Tianshui, Gansu, China
| | - Lanfang Ma
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, Tianshui, Gansu, China
| | - Ruilin Ma
- Key Laboratory of Resource Utilization of Agricultural Solid Waste in Gansu Province, Tianshui Normal University, Tianshui, Gansu, China
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Rovere M, Pucciariello C, Castella C, Berger A, Forgia M, Guyet TA, Bosseno M, Pacoud M, Brouquisse R, Perata P, Boscari A. Group VII ethylene response factors, MtERF74 and MtERF75, sustain nitrogen fixation in Medicago truncatula microoxic nodules. Plant Cell Environ 2023; 46:607-620. [PMID: 36479691 DOI: 10.1111/pce.14505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Group VII ethylene response factors (ERF-VII) are plant-specific transcription factors (TFs) known for their role in the activation of hypoxia-responsive genes under low oxygen stress but also in plant endogenous hypoxic niches. However, their function in the microaerophilic nitrogen-fixing nodules of legumes has not yet been investigated. We investigated regulation and the function of the two Medicago truncatula ERF-VII TFs (MtERF74 and MtERF75) in roots and nodules, MtERF74 and MtERF75 in response to hypoxia stress and during the nodulation process using an RNA interference strategy and targeted proteolysis of MtERF75. Knockdown of MtERF74 and MtERF75 partially blocked the induction of hypoxia-responsive genes in roots exposed to hypoxia stress. In addition, a significant reduction in nodulation capacity and nitrogen fixation activity was observed in mature nodules of double knockdown transgenic roots. Overall, the results indicate that MtERF74 and MtERF75 are involved in the induction of MtNR1 and Pgb1.1 expression for efficient Phytogb-nitric oxide respiration in the nodule.
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Affiliation(s)
- Martina Rovere
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Chiara Pucciariello
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Claude Castella
- INRAE, UR1115 Plantes et Systèmes de culture Horticoles (PSH), Site Agroparc, Avignon, France
| | - Antoine Berger
- Agroécologie, AgroSup Dijon, CNRS, INRAE, University of Bourgogne Franche-Comté, Dijon, France
| | - Marco Forgia
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Tran A Guyet
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
| | - Marc Bosseno
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Marie Pacoud
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | | | - Pierdomenico Perata
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy
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Li G, Liu B, Yang J, Li X, Wang H, Wen H, He F. Acute Hypoxia Stress-Induced Apoptosis in Gill of Japanese Flounder ( Paralichthys olivaceus) by Modulating the Epas1/Bad Pathway. Biology (Basel) 2022; 11:biology11111656. [PMID: 36421370 PMCID: PMC9687431 DOI: 10.3390/biology11111656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/03/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022]
Abstract
The physiological responses and molecular mechanisms of apoptosis in Japanese flounder under hypoxic stress remain unclear. In the present study, we performed acute hypoxia stress on Japanese flounder (2.39 ± 0.84 mg/L) and detected gills responses in histomorphology and molecular mechanisms. The results showed that the volume of the interlamellar cell mass decreased and the gill lamellae prolonged, indicating the expansion of the respiratory surface area. Additionally, the fluorescence signal of apoptosis increased under hypoxic stress. In addition, the expression of two genes (EPAS1 and Bad) related to apoptosis increased about four-fold and two-fold, respectively, at 6 h of hypoxia. Meanwhile, the result of the dual-luciferase reporter assay showed that EPAS1 is a transcription factor, which could regulate (p < 0.05) the expression of the Bad gene, and we identified the binding site of EPAS1 was the AATGGAAAC sequence located near −766. DNA methylation assay showed that hypoxia affected the methylation status of CpG islands of EPAS1 and Bad genes. All results indicated that hypoxia could activate the EPAS1/Bad signal pathway to induce gill apoptosis of Japanese flounder. Our study provides new light on understanding the molecular mechanism of hypoxia-induced apoptosis in Japanese flounder.
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Affiliation(s)
| | | | | | | | | | | | - Feng He
- Correspondence: ; Tel.: +86-532-82031953
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Suo N, Zhou ZX, Xu J, Cao DC, Wu BY, Zhang HY, Xu P, Zhao ZX. Transcriptome Analysis Reveals Molecular Underpinnings of Common Carp ( Cyprinus carpio) Under Hypoxia Stress. Front Genet 2022; 13:907944. [PMID: 35669183 PMCID: PMC9163828 DOI: 10.3389/fgene.2022.907944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/18/2022] [Indexed: 12/18/2022] Open
Abstract
As an essential environmental factor that affects the economic benefits of aquaculture, hypoxia is one of the urgent problems to be solved in the aquaculture fish breeding industry. Common carp (Cyprinus carpio) is a critical economic fish in China, and at present, there are many breeding strains of common carp with different character advantages in China, including Hebao red carp (C. carpio var wuyuanesis) and Songpu mirror carp (C. carpio var specularis). Even if the environmental adaptation of common carp is generally strong, the genetic background of hypoxia tolerance in different strains of common carp is unclear yet. This study tested the hypoxia tolerance of Songpu minor carp, Hebao red carp, and their hybrid F1 population by an acute hypoxia treatment. Muscle and liver tissues were used for transcriptome sequencing analysis to identify the key factors for hypoxia tolerance and explore the potential genetic mechanism for breeding high hypoxia tolerance in common carp. The comparative transcriptomic analysis revealed abundant hypoxia response-related genes and their differential regulation mechanism in these two tissues of different common carp strains under acute hypoxia, including immune response, cellular stress response, HIFs (hypoxia-inducible factors), MAP kinase, iron ion binding, and heme binding. Our findings will facilitate future investigation on the hypoxia response mechanism and provide a solid theoretical basis for breeding projects in common carp.
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Affiliation(s)
- Ning Suo
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China.,Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing, China
| | - Zhi-Xiong Zhou
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Jian Xu
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing, China
| | - Ding-Chen Cao
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, China
| | - Bi-Yin Wu
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing, China
| | - Han-Yuan Zhang
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing, China
| | - Peng Xu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Zi-Xia Zhao
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Chinese Academy of Fishery Sciences, Beijing, China
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Ma J, Rukh G, Ruan Z, Xie X, Ye Z, Liu D. Effects of Hypoxia Stress on Growth, Root Respiration, and Metabolism of Phyllostachys praecox. Life (Basel) 2022; 12. [PMID: 35743839 DOI: 10.3390/life12060808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 11/22/2022] Open
Abstract
Hypoxia affects plant growth, hormone content, various enzyme activities, cell structure, peroxide production, and metabolic level, therefore reducing crop yield. This study assessed the physiological, biochemical, and metabolic characteristics of Phyllostachys praecox. Results revealed that hypoxia stress treatment significantly inhibited plant growth. Leaf chlorophyll contents was initially improved and then reduced with plant growth time. Under hypoxia stress, the root activity significantly was reduced, leading to the decrease in the nutrient absorption and transport. Yet, with low oxygen concentration, the contents of ethanol, acetaldehyde, and lactic acid were improved. With hypoxia stress, phospholipids and amino acids were the main metabolites of Phyllostachys praecox. Glycosphospholipid metabolism is the key pathway in responding to hypoxia stress significantly (p < 0.05), and lysophosphatidlycholine (lysoPC) and phosphatidylcholines (PC) in the metabolites of this metabolic pathway were significantly enhanced. Our study reveals the mechanism of Phyllostachys praecox cell membrane responding to hypoxia stress based on molecular level. This is conducive to finding targeted solutions to improve the productivity of Phyllostachys praecox to better optimize a mulching approach in the bamboo forest.
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Wang Q, Li X, Sha H, Luo X, Zou G, Liang H. Identification of microRNAs in Silver Carp ( Hypophthalmichthys molitrix) Response to Hypoxia Stress. Animals (Basel) 2021; 11:ani11102917. [PMID: 34679939 PMCID: PMC8696637 DOI: 10.3390/ani11102917] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/28/2021] [Accepted: 10/06/2021] [Indexed: 12/31/2022] Open
Abstract
Simple Summary Hypoxia stress is one of the main problems in silver carp (Hypophthalmichthys molitrix) culture. Severe hypoxia stress can lead to damage and even death of silver carp. Therefore, it is very important to explore how silver carp adapt to and respond to hypoxia stress. MicroRNAs play an important role in a series of important life activities in organisms. In this study, the differentiallyexpressed miRNAs were screened from a mixed pool of liver, brain, heart and gill of silver carp under different levels of hypoxia stress by high-throughput sequencing. Our findings provided new insights to further study the miRNA regulatory mechanism and molecular characteristics of anoxic response in silver carp. Abstract Hypoxia is one of the serious stresses in fish culture, which can lead to physical and morphological changes, and cause injury and even death to fish. Silver carp (Hypophthalmichthys molitrix) is an important economic fish and widely distributed in China. MicroRNA is a kind of endogenous non-coding single-stranded small RNA, which is involved in cell development, and immune response and gene expression regulation. In this study, silver carp were kept in the closed containers for hypoxia treatment by spontaneous oxygen consumption. The samples of heart, brain, liver and gill were collected, and the total RNAs extracted separately from the four tissues were mixed in equal amounts according to the concentration. Afterwards, the RNA pool was constructed for high-throughput sequencing, and based on the small RNA sequencing, the differentially expressed microRNAs were identified. Furthermore, their target gene prediction and enrichment analyses were carried out. The results showed that a total of 229 known miRNAs and 391 putative novel miRNAs were identified, which provided valuable resources for further study on the regulatory mechanism of miRNAs in silver carp under hypoxia stress. The authors verified 16 differentially expressed miRNAs by qRT-PCR, and the results were consistent with small RNA sequencing (sRNA-seq). The predicted target genes number of differentially expressed miRNAs was 25,146. GO and KEGG functional enrichment analysis showed that these target genes were mainly involved in the adaption of hypoxia stress in silver carp through biological regulation, catalytic activity and apoptosis. This study provides references for further study of interaction between miRNAs and target genes, and the basic data for the response mechanism under hypoxia stress in silver carp.
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Affiliation(s)
- Qiaoxin Wang
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
| | - Xiaohui Li
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
| | - Hang Sha
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
| | - Xiangzhong Luo
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
| | - Guiwei Zou
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
- Correspondence: (G.Z.); (H.L.); Tel.: +86-27-81780097 (H.L.)
| | - Hongwei Liang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; (X.L.); (H.S.); (X.L.)
- Correspondence: (G.Z.); (H.L.); Tel.: +86-27-81780097 (H.L.)
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Alderdice R, Suggett DJ, Cárdenas A, Hughes DJ, Kühl M, Pernice M, Voolstra CR. Divergent expression of hypoxia response systems under deoxygenation in reef-forming corals aligns with bleaching susceptibility. Glob Chang Biol 2021; 27:312-326. [PMID: 33197302 DOI: 10.1111/gcb.15436] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Exposure of marine life to low oxygen is accelerating worldwide via climate change and localized pollution. Mass coral bleaching and mortality have recently occurred where reefs have experienced chronic low oxygen events. However, the mechanistic basis of tolerance to oxygen levels inadequate to sustain normal functioning (i.e. hypoxia) and whether it contributes to bleaching susceptibility, remain unknown. We therefore experimentally exposed colonies of the environmentally resilient Acropora tenuis, a common reef-building coral from the Great Barrier Reef, to deoxygenation-reoxygenation stress that was aligned to their natural night-day light cycle. Specifically, the treatment involved removing the 'night-time O2 buffer' to challenge the inherent hypoxia thresholds. RNA-Seq analysis revealed that coral possess a complete and active hypoxia-inducible factor (HIF)-mediated hypoxia response system (HRS) homologous to other metazoans. As expected, A. tenuis exhibited bleaching resistance and showed a strong inducibility of HIF target genes in response to deoxygenation stress. We applied this same approach in parallel to a colony of Acropora selago, known to be environmnetally susceptible, which conversely exhibited a bleaching phenotype response. This phenotypic divergence of A. selago was accompanied by contrasting gene expression profiles indicative of varied effectiveness of their HIF-HRS. Based on our RNA-Seq analysis, we propose (a) that the HIF-HRS is central for corals to manage deoxygenation stress and (b) that key genes of this system (and the wider gene network) may contribute to variation in coral bleaching susceptibility. Our analysis suggests that heat shock protein (hsp) 70 and 90 are important for low oxygen stress tolerance and further highlights how hsp90 expression might also affect the inducibility of coral HIF-HRS in overcoming a metabolic crisis under deoxygenation stress. We propose that differences in coral HIF-HRS could be central in regulating sensitivity to other climate change stressors-notably thermal stress-that commonly drive bleaching.
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Affiliation(s)
- Rachel Alderdice
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
| | - David J Suggett
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
| | - Anny Cárdenas
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - David J Hughes
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
| | - Michael Kühl
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
- Marine Biology Section, Department of Biology, University of Copenhagen, Helsingør, Denmark
| | - Mathieu Pernice
- Climate Change Cluster, Faculty of Science, University of Technology Sydney, Ultimo, NSW, Australia
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Zhou Y, Luo W, Yu X, Wang J, Feng Y, Tong J. Cardiac Transcriptomics Reveals That MAPK Pathway Plays an Important Role in Hypoxia Tolerance in Bighead Carp ( Hypophthalmichthys nobilis). Animals (Basel) 2020; 10:E1483. [PMID: 32846886 DOI: 10.3390/ani10091483] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 01/14/2023] Open
Abstract
As aquatic animals, fishes often encounter various situations of low oxygen, and they have evolved the ability to respond to hypoxia stress. Studies of physiological and molecular responses to hypoxia stress are essential to clarify genetic mechanisms underlying hypoxia tolerance in fish. In this study, we performed acute hypoxia treatment in juvenile bighead carp (Hypophthalmicthys nobilis) by decreasing water O2 from 6.5 mg/L to 0.5 mg/L in three hours. This hypoxia stress resulted in a significant increase in blood lactate and serum glucose. Comparisons of heart transcriptome among hypoxia tolerant (HT), hypoxia sensitive (HS), and normoxia control (NC) groups showed that 820, 273, and 301 differentially expressed genes (DEGs) were identified in HS vs. HT, NC vs. HS, and NC vs. HT (false discovery rate (FDR) < 0.01, Fold Change> 2), respectively. KEGG pathway enrichment showed that DEGs between HS and HT groups were mainly involved in mitogen-activated protein kinase (MAPK) signaling, insulin signaling, apoptosis, tight junction and adrenergic signaling in cardiomyocytes pathways, and DEGs in MAPK signaling pathway played a key role in cardiac tolerance to hypoxia. Combined with the results of our previous cDNA-amplified fragment length polymorphism (cDNA-AFLP) analysis of hypoxia stress in this species, such genes as stbp2, ttn, mapk, kcnh, and tnfrsf were identified in both studies, representing the significance of these DEGs in hypoxia tolerance in bighead carp. These results provide insights into the understanding of genetic modulations for fish heart coping with hypoxia stress and generate basic resources for future breeding studies of hypoxia resistance in bighead carp.
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Abstract
Membrane lipids change drastically in plants when they suffered from hypoxia (oxygen deficiency) stress. Overall, hypoxia stress lowers the contents of total lipids, inhabits lipid biosynthesis, and stimulates lipid degradation, leading to the accumulation of free fatty acids. Lipid alterations include changes in the contents of lipid classes, the extent of saturation, and the length of acyl chains. But the detail and systematic studies about lipid changes, as well as the function mechanism in hypoxia stress are poorly understood. Here, the major unanswered questions and suggestions on the study of the function of lipid in hypoxia stress were provided.
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Affiliation(s)
- Le Xu
- Hubei Collaborative Innovation Centre for Grain Industry/Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, China
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Rui Pan
- Hubei Collaborative Innovation Centre for Grain Industry/Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, China
| | - Wenying Zhang
- Hubei Collaborative Innovation Centre for Grain Industry/Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, China
- CONTACT Wenying Zhang Hubei Collaborative Innovation Centre for Grain Industry/Engineering Research Centre of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou434025, China
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Qiang J, Zhu XW, He J, Tao YF, Bao JW, Zhu JH, Xu P. miR-34a Regulates the Activity of HIF-1a and P53 Signaling Pathways by Promoting GLUT1 in Genetically Improved Farmed Tilapia (GIFT, Oreochromis niloticus) Under Hypoxia Stress. Front Physiol 2020; 11:670. [PMID: 32612542 PMCID: PMC7308589 DOI: 10.3389/fphys.2020.00670] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 05/25/2020] [Indexed: 12/21/2022] Open
Abstract
In fish under hypoxia stress, homeostasis can become imbalanced, leading to tissue and organ damage and decreased survival. Therefore, it is useful to explore the molecular and physiological regulation mechanisms that function in fish under hypoxia stress. The microRNA miR-34a is involved in fat and glycogen metabolism, and in apoptosis. In this study, we first verified that GLUT1, the gene encoding glucose transporter 1, is a potential target gene of miR-34a in genetically improved farmed tilapia (GIFT, Oreochromis niloticus) by dual luciferase reporter assays. Then, we clarified the regulatory relationship between miR-34a and GLUT1 by qRT-PCR analyses. We analyzed the regulatory effects of knockdown or promotion of GLUT1 expression in vitro and in vivo in GIFT under hypoxia stress. The results confirm that GLUT1 is a target gene of miR-34a in GIFT. Down-regulation of miR-34a significantly promoted GLUT1 expression. Knockdown of GLUT1 reduced the glycogen content in GIFT liver cells, inhibited HIF-1a gene expression, up-regulated the expression of genes involved in P53 signaling pathways (P53 and CASPASE-3 genes), and accelerated hepatocyte apoptosis under hypoxia stress. Compared with the control group, the group injected in the tail vein with miR-34a antagomir showed up-regulated expression of GLUT1 in the liver, increased liver glycogen content at 96 h of hypoxia stress, down-regulated expression of P53 and CASPASE-3, and decreased serum aspartate aminotransferase and alanine aminotransferase enzyme activities. Our results provide information about the molecular regulation mechanism of miRNAs and their target genes in fish during the response to hypoxia stress.
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Affiliation(s)
- Jun Qiang
- Fisheries College of Guangdong Ocean University, Zhanjiang, China.,Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Xiao-Wen Zhu
- Fisheries College of Guangdong Ocean University, Zhanjiang, China
| | - Jie He
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Yi-Fan Tao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Jin-Wen Bao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Jun-Hao Zhu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Pao Xu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
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Wagner S, Steinbeck J, Fuchs P, Lichtenauer S, Elsässer M, Schippers JHM, Nietzel T, Ruberti C, Van Aken O, Meyer AJ, Van Dongen JT, Schmidt RR, Schwarzländer M. Multiparametric real-time sensing of cytosolic physiology links hypoxia responses to mitochondrial electron transport. New Phytol 2019; 224:1668-1684. [PMID: 31386759 DOI: 10.1111/nph.16093] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/01/2019] [Indexed: 05/24/2023]
Abstract
Hypoxia regularly occurs during plant development and can be induced by the environment through, for example, flooding. To understand how plant tissue physiology responds to progressing oxygen restriction, we aimed to monitor subcellular physiology in real time and in vivo. We establish a fluorescent protein sensor-based system for multiparametric monitoring of dynamic changes in subcellular physiology of living Arabidopsis thaliana leaves and exemplify its applicability for hypoxia stress. By monitoring cytosolic dynamics of magnesium adenosine 5'-triphosphate, free calcium ion concentration, pH, NAD redox status, and glutathione redox status in parallel, linked to transcriptional and metabolic responses, we generate an integrated picture of the physiological response to progressing hypoxia. We show that the physiological changes are surprisingly robust, even when plant carbon status is modified, as achieved by sucrose feeding or extended night. Inhibition of the mitochondrial respiratory chain causes dynamics of cytosolic physiology that are remarkably similar to those under oxygen depletion, highlighting mitochondrial electron transport as a key determinant of the cellular consequences of hypoxia beyond the organelle. A broadly applicable system for parallel in vivo sensing of plant stress physiology is established to map out the physiological context under which both mitochondrial retrograde signalling and low oxygen signalling occur, indicating shared upstream stimuli.
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Affiliation(s)
- Stephan Wagner
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
- Max-Planck-Institute for Plant Breeding Research, Carl-von-Linné Weg 10, D-50829, Cologne, Germany
| | - Janina Steinbeck
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
| | - Philippe Fuchs
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Sophie Lichtenauer
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
| | - Marlene Elsässer
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
- Institute for Cellular and Molecular Botany (IZMB), University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
| | - Jos H M Schippers
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, D-52074, Aachen, Germany
- Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK), Gatersleben, Corrensstraße 3, D-06466, Seeland, Germany
| | - Thomas Nietzel
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Cristina Ruberti
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
| | - Olivier Van Aken
- Department of Biology, Lund University, Sölvegatan 35, Lund, 223 62, Sweden
| | - Andreas J Meyer
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Friedrich-Ebert-Allee 144, D-53113, Bonn, Germany
| | - Joost T Van Dongen
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, D-52074, Aachen, Germany
| | - Romy R Schmidt
- Institute of Biology I, RWTH Aachen University, Worringerweg 1, D-52074, Aachen, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology (IBBP), University of Münster, Schlossplatz 8, D-48143, Münster, Germany
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12
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Jamil W, Wu W, Gong H, Huang JW, Ahmad M, Zhu QG, Jin R, Liu XF, Yin XR. C2H2-Type Zinc Finger Proteins (DkZF1/2) Synergistically Control Persimmon Fruit Deastringency. Int J Mol Sci 2019; 20:ijms20225611. [PMID: 31717553 PMCID: PMC6888379 DOI: 10.3390/ijms20225611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 01/09/2023] Open
Abstract
Hypoxic environments are generally undesirable for most plants, but for astringent persimmon, high CO2 treatment (CO2 > 90%), also termed artificial high-CO2 atmosphere (AHCA), causes acetaldehyde accumulation and precipitation of soluble tannins and could remove astringency. The multiple transcriptional regulatory linkages involved in persimmon fruit deastringency have been advanced significantly by characterizing the ethylene response factors (ERFs), WRKY and MYB; however, the involvement of zinc finger proteins for deastringency has not been investigated. In this study, five genes encoding C2H2-type zinc finger proteins were isolated and designed as DkZF1-5. Phylogenetic and sequence analyses suggested the five DkZFs could be clustered into two different subgroups. qPCR analysis indicated that transcript abundances of DkZF1/4 were significantly upregulated during AHCA treatment (1% O2 and 95% CO2) at day 1, DkZF2/5 at both day 1 and 2, while DkZF3 at day 2. Dual-luciferase assay indicated DkZF1 and DkZF2 as the activators of deastringency-related structural genes (DkPDC2 and DkADH1) and transcription factors (DkERF9/10). Moreover, combinative effects between various transcription factors were investigated, indicating that DkZF1 and DkZF2 synergistically showed significantly stronger activations on the DkPDC2 promoter. Further, both bimolecular fluorescence complementation (BiFC) and yeast two hybrid (Y2H) assays confirmed that DkZF2 had protein–protein interactions with DkZF1. Thus, these findings illustrate the regulatory mechanisms of zinc finger proteins for persimmon fruit deastringency under AHCA.
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Affiliation(s)
- Wajeeha Jamil
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Wei Wu
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Hui Gong
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Jing-Wen Huang
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Mudassar Ahmad
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Qing-Gang Zhu
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Rong Jin
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
- Agricultural Experiment Station, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
| | - Xiao-Fen Liu
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
| | - Xue-Ren Yin
- Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang 310058, China; (W.J.); (W.W.); (H.G.); (M.A.); (Q.-G.Z.); (R.J.); (X.-F.L.)
- The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang 310058, China
- Zhejiang Provincial Key Laboratory of Integrative Biology of Horticultural Plants, Hangzhou, Zhejiang 310058, China
- Correspondence: ; Tel.: +86-571-8898-2461
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13
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Ye NH, Wang FZ, Shi L, Chen MX, Cao YY, Zhu FY, Wu YZ, Xie LJ, Liu TY, Su ZZ, Xiao S, Zhang H, Yang J, Gu HY, Hou XX, Hu QJ, Yi HJ, Zhu CX, Zhang J, Liu YG. Natural variation in the promoter of rice calcineurin B-like protein10 (OsCBL10) affects flooding tolerance during seed germination among rice subspecies. Plant J 2018; 94:612-625. [PMID: 29495079 DOI: 10.1111/tpj.13881] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 02/13/2018] [Accepted: 02/14/2018] [Indexed: 05/23/2023]
Abstract
Rice (Oryza sativa L.) has two ecotypes, upland and lowland rice, that have been observed to show different tolerance levels under flooding stress. In this study, two rice cultivars, upland (Up221, flooding-intolerant) and lowland (Low88, flooding-tolerant), were initially used to study their molecular mechanisms in response to flooding germination. We observed that variations in the OsCBL10 promoter sequences in these two cultivars might contribute to this divergence in flooding tolerance. Further analysis using another eight rice cultivars revealed that the OsCBL10 promoter could be classified as either a flooding-tolerant type (T-type) or a flooding-intolerant type (I-type). The OsCBL10 T-type promoter only existed in japonica lowland cultivars, whereas the OsCBL10 I-type promoter existed in japonica upland, indica upland and indica lowland cultivars. Flooding-tolerant rice cultivars containing the OsCBL10 T-type promoter have shown lower Ca2+ flow and higher α-amylase activities in comparison to those in flooding-intolerant cultivars. Furthermore, the OsCBL10 overexpression lines were sensitive to both flooding and hypoxic treatments during rice germination with enhanced Ca2+ flow in comparison to wild-type. Subsequent findings also indicate that OsCBL10 may affect OsCIPK15 protein abundance and its downstream pathways. In summary, our results suggest that the adaptation to flooding stress during rice germination is associated with two different OsCBL10 promoters, which in turn affect OsCBL10 expression in different cultivars and negatively affect OsCIPK15 protein accumulation and its downstream cascade.
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Affiliation(s)
- Neng-Hui Ye
- Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Hunan Agricultural University, Changsha, 410128, China
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Feng-Zhu Wang
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Lu Shi
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Mo-Xian Chen
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Yun-Ying Cao
- College of Life Sciences, Nantong University, Nantong, Jiangsu, China
| | - Fu-Yuan Zhu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, Jiangsu Province, 210037, China
| | - Yi-Zhen Wu
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Li-Juan Xie
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Tie-Yuan Liu
- School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Ze-Zhuo Su
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shi Xiao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hao Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Jianchang Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, 225009, China
| | - Hai-Yong Gu
- The Rice Research Institute of Guangdong Academy of Agricultural Sciences (GDRRI), Guangzhou, China
| | - Xuan-Xuan Hou
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
| | - Qi-Juan Hu
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Hui-Juan Yi
- College of Life Sciences, Nantong University, Nantong, Jiangsu, China
| | - Chang-Xiang Zhu
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
| | - Jianhua Zhang
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- Department of Biology, Hong Kong Baptist University, and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Ying-Gao Liu
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Taian, Shandong, China
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14
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Peter MS, Simi S. Hypoxia Stress Modifies Na +/K +-ATPase, H +/K +-ATPase, [Formula: see text], and nkaα1 Isoform Expression in the Brain of Immune-Challenged Air-Breathing Fish. J Exp Neurosci 2017; 11:1179069517733732. [PMID: 29238219 PMCID: PMC5721975 DOI: 10.1177/1179069517733732] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 08/18/2017] [Indexed: 12/23/2022] Open
Abstract
Fishes are equipped to sense stressful stimuli and are able to respond to environmental stressor such as hypoxia with varying pattern of stress response. The functional attributes of brain to hypoxia stress in relation to ion transport and its interaction during immune challenge have not yet delineated in fish. We, therefore, explored the pattern of ion transporter functions and messenger RNA (mRNA) expression of α1-subunit isoforms of Na+/K+-ATPase (NKA) in the brain segments, namely, prosencephalon (PC), mesencephalon (MC), and metencephalon (MeC) in an obligate air-breathing fish exposed either to hypoxia stress (30 minutes forced immersion in water) or challenged with zymosan treatment (25-200 ng g−1 for 24 hours) or both. Zymosan that produced nonspecific immune responses evoked differential regulation of NKA, H+/K+-ATPase (HKA), and Na+/NH4+-ATPase (NNA) in the varied brain segments. On the contrary, hypoxia stress that demanded activation of NKA in PC and MeC showed a reversed NKA activity pattern in MeC of immune-challenged fish. A compromised HKA and NNA regulation during hypoxia stress was found in immune-challenged fish, indicating the role of these brain ion transporters to hypoxia stress and immune challenges. The differential mRNA expression of α1-subunit isoforms of NKA, nkaα1a, nkaα1b, and nkaα1c, in hypoxia-stressed brain showed a shift in its expression pattern during hypoxia stress-immune interaction in PC and MC. Evidence is thus presented for the first time that ion transporters such as HKA and NNA along with NKA act as functional brain markers which respond differentially to both hypoxia stress and immune challenges. Taken together, the data further provide evidence for a differential Na+, K+, H+, and NH4+ ion signaling that exists in brain neuronal clusters during hypoxia stress-immune interaction as a result of modified regulations of NKA, HKA, and NNA transporter functions and nkaα1 isoform regulation.
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Affiliation(s)
- Mc Subhash Peter
- Department of Zoology, University of Kerala, Thiruvananthapuram, India.,Inter-University Centre for Evolutionary and Integrative Biology, University of Kerala, Thiruvananthapuram, India
| | - Satheesan Simi
- Department of Zoology, University of Kerala, Thiruvananthapuram, India
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15
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Huo D, Sun L, Li X, Ru X, Liu S, Zhang L, Xing L, Yang H. Differential Expression of miRNAs in the Respiratory Tree of the Sea Cucumber Apostichopus japonicus Under Hypoxia Stress. G3 (Bethesda) 2017; 7:3681-92. [PMID: 28916650 DOI: 10.1534/g3.117.1129] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The sea cucumber, an important economic species, has encountered high mortality since 2013 in northern China because of seasonal environmental stress such as hypoxia, high temperature, and low salinity. MicroRNAs (miRNAs) are important in regulating gene expression in marine organisms in response to environmental change. In this study, high-throughput sequencing was used to investigate alterations in miRNA expression in the sea cucumber under different levels of dissolved oxygen (DO). Nine small RNA libraries were constructed from the sea cucumber respiratory trees. A total of 26 differentially expressed miRNAs, including 12 upregulated and 14 downregulated miRNAs, were observed in severe hypoxia (DO 2 mg/L) compared with mild hypoxia (DO 4 mg/L) and normoxic conditions (DO 8 mg/L). Twelve differentially expressed miRNAs were clustered in severe hypoxia. In addition, real-time PCR revealed that 14 randomly selected differentially expressed miRNAs showed significantly increased expressions in severe hypoxia and the expressions of nine miRNAs, including key miRNAs such as Aja-miR-1, Aja-miR-2008, and Aja-miR-184, were consistent with the sequencing results. Moreover, gene ontology and pathway analyses of putative target genes suggest that these miRNAs are important in redox, transport, transcription, and hydrolysis under hypoxia stress. Notably, novel-miR-1, novel-miR-2, and novel-miR-3 were specifically clustered and upregulated in severe hypoxia, which may provide new insights into novel “hypoxamiR” identification. These results will provide a basis for future studies of miRNA regulation and molecular adaptive mechanisms in sea cucumbers under hypoxia stress.
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