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Yao H, Liang Z, Wang W, Niu C. Integrative analyses of transcriptomes and metabolomes provide insight into salinity adaption in Bangia (Rhodaphyta). Int J Biol Macromol 2023; 253:127466. [PMID: 37875187 DOI: 10.1016/j.ijbiomac.2023.127466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/13/2023] [Accepted: 10/14/2023] [Indexed: 10/26/2023]
Abstract
The salinity of the external environment poses a serious threat to most land plants. Although seaweeds can adapt to this, intertidal species are subject to wide fluctuations in salinity, including hypo- and hyper-saline conditions. The red algal genus Bangiales is a typical example; it is one of the oldest eukaryotes with sexual reproduction and has successfully adapted to both marine and freshwater environments. However, there is a dearth of research focused on elucidating the mechanism by which marine Bangia (Bangia fuscopurpurea) adapts to hypo-salinity, as well as the mechanism by which freshwater Bangia (Bangia atropurpurea) adapts to hyper-salinity. The objective of this study is to employ third-generation full-length transcriptome data and untargeted metabolome data, to provide insights into the salinity adaptation mechanism of as well as the evolutionary relationship between both Bangia species. B. fuscopurpurea and B. atropurpurea exhibited 9112 and 8772 differentially expressed genes (DEGs), respectively, during various periods of hyper-saline condition. These genes were primarily enriched in secondary metabolites and energy-related metabolic pathways. Additionally, B. fuscopurpurea displayed 16,285 DEGs during different periods of hypo-saline condition, which were mainly enriched in metabolic pathways related to ion transport and membrane proteins. In the hyper- and hypo-saline adapt response processes of B. fuscopurpurea, a total of 303 transcription factors were identified, which belonged to 26 families. Among these, 85 and 142 differential transcription factors were identified, respectively, mainly belonging to the C2H2 and MYB family. Similarly, in the response process of B. atropurpurea to hyper-saline condition, a total of 317 transcription factors were identified, mainly belonging to 17 families. Among these, 121 differential transcription factors were identified, mainly belonging to the C2H2 and bZIP family. Furthermore, a correlation analysis was conducted to examine the relationship between the transcriptional and metabolic levels of both species under saline adaptation. The findings demonstrated that Bangia exhibits intricate adaptations to salinity, which involve swift regulation of its photosynthetic processes, alternations in membrane contents, and a robust anti-oxidation system to mitigate the effects of excess redox energy during exposure to varying salinity. Notably, the unsaturated fat and glutathione metabolic pathways were found to be significantly enriched in this context.
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Affiliation(s)
- Haiqin Yao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao 266071, China
| | - Zhourui Liang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China
| | - Wenjun Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao, China.
| | - Citong Niu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, No. 106 Nanjing Road, Qingdao 266071, China
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Vasconcelos JB, Vasconcelos ERTPP, Urrea-Victoria V, Bezerra PS, Cocentino ALM, Navarro DMAF, Chow F, Fujii MT. Environmental Stress Tolerance and Antioxidant Response of Palisada perforata (Rhodophyta) from a Tropical Reef 1. JOURNAL OF PHYCOLOGY 2021; 57:1045-1058. [PMID: 33624289 DOI: 10.1111/jpy.13154] [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: 12/15/2020] [Revised: 02/05/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
In this study, we analyzed the antioxidant activity and total phenolic content of the intertidal seaweed Palisada perforata collected from different reef microhabitats (sheltered site, tide pool, plateau, and exposed site) along the coast of Pernambuco (Brazil). Both parameters were compared with the same parameters of this species grown in the laboratory under two experiments simulating temperature, salinity, and desiccation conditions found in the reef. After both experiments (temperature x salinity and desiccation), the algal photosynthetic performance was measured through chlorophyll fluorescence parameters using a pulse-amplitude modulation fluorometer to test their stress response. Palisada perforata likely underwent stress by desiccation due to tidal fluctuations rather than to temperature or salinity changes. This conclusion agrees with our observations of the plateau site´s specimens, which were exposed to both air and UV radiation during low tides and exhibited higher antioxidant activity to avoid oxidative damage. However, despite the environmental stress, the antioxidant activity remained low, suggesting that photoinhibition is a crucial protection mechanism against oxidative damage.
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Affiliation(s)
- Juliane B Vasconcelos
- Laboratório de Macroalgas, Departamento de Oceanografia, Universidade Federal de Pernambuco, Avenida da Arquitetura, s/n°, Recife, 50740-550, Brazil
| | - Edson R T P P Vasconcelos
- Laboratório de Macroalgas, Departamento de Oceanografia, Universidade Federal de Pernambuco, Avenida da Arquitetura, s/n°, Recife, 50740-550, Brazil
| | - Vanessa Urrea-Victoria
- Laboratório de Algas Marinhas "Édison José de Paula", Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, São Paulo, 05508-090, Brazil
| | - Patricia S Bezerra
- Laboratório de Ecologia Química, Departamento de Química Fundamental, Universidade Federal de Pernambuco, Av. Jornalista Anibal Fernandes s/n°, Recife, 50740-560, Brazil
| | - Adilma L M Cocentino
- Laboratório de Macroalgas, Departamento de Oceanografia, Universidade Federal de Pernambuco, Avenida da Arquitetura, s/n°, Recife, 50740-550, Brazil
| | - Daniela M A F Navarro
- Laboratório de Ecologia Química, Departamento de Química Fundamental, Universidade Federal de Pernambuco, Av. Jornalista Anibal Fernandes s/n°, Recife, 50740-560, Brazil
| | - Fungyi Chow
- Laboratório de Algas Marinhas "Édison José de Paula", Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, São Paulo, 05508-090, Brazil
| | - Mutue T Fujii
- Núcleo de Pesquisa em Ficologia, Instituto de Botânica, Av. Miguel Estéfano 3687, São Paulo, 04301-012, Brazil
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