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Wang W, Ge Q, Wen J, Zhang H, Guo Y, Li Z, Xu Y, Ji D, Chen C, Guo L, Xu M, Shi C, Fan G, Xie C. Horizontal gene transfer and symbiotic microorganisms regulate the adaptive evolution of intertidal algae, Porphyra sense lato. Commun Biol 2024; 7:976. [PMID: 39128935 PMCID: PMC11317521 DOI: 10.1038/s42003-024-06663-y] [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: 02/10/2024] [Accepted: 07/31/2024] [Indexed: 08/13/2024] Open
Abstract
Intertidal algae may adapt to environmental challenges by acquiring genes from other organisms and relying on symbiotic microorganisms. Here, we obtained a symbiont-free and chromosome-level genome of Pyropia haitanensis (47.2 Mb), a type of intertidal algae, by using multiple symbiont screening methods. We identified 286 horizontal gene transfer (HGT) genes, 251 of which harbored transposable elements (TEs), reflecting the importance of TEs for facilitating the transfer of genes into P. haitanensis. Notably, the bulked segregant analysis revealed that two HGT genes, sirohydrochlorin ferrochelatase and peptide-methionine (R)-S-oxide reductase, play a significant role in the adaptation of P. haitanensis to heat stress. Besides, we found Pseudomonas, Actinobacteria, and Bacteroidetes are the major taxa among the symbiotic bacteria of P. haitanensis (nearly 50% of the HGT gene donors). Among of them, a heat-tolerant actinobacterial strain (Saccharothrix sp.) was isolated and revealed to be associated with the heat tolerance of P. haitanensis through its regulatory effects on the genes involved in proline synthesis (proC), redox homeostasis (ggt), and protein folding (HSP20). These findings contribute to our understanding of the adaptive evolution of intertidal algae, expanding our knowledge of the HGT genes and symbiotic microorganisms to enhance their resilience and survival in challenging intertidal environments.
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Affiliation(s)
- Wenlei Wang
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, 361021, China
| | - Qijin Ge
- BGI Research, Qingdao, 266555, China
| | - Jian Wen
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Han Zhang
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Yanling Guo
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Zongtang Li
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Yan Xu
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Dehua Ji
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | - Changsheng Chen
- Fisheries College, Jimei University, Xiamen, 361021, China
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China
| | | | | | - Chengcheng Shi
- BGI Research, Qingdao, 266555, China
- Qingdao Key Laboratory of Marine Genomics, BGI Research, Qingdao, 266555, China
| | - Guangyi Fan
- BGI Research, Qingdao, 266555, China.
- Qingdao Key Laboratory of Marine Genomics, BGI Research, Qingdao, 266555, China.
- BGI Research, Shenzhen, 518083, China.
| | - Chaotian Xie
- Fisheries College, Jimei University, Xiamen, 361021, China.
- State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei university, Ningde, China.
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, 361021, China.
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Zhang H, Zeng G, Xie J, Zhang Y, Ji D, Xu Y, Xie C, Wang W. PhbZIP2 regulates photosynthesis-related genes in an intertidal macroalgae, Pyropia haitanensis, under stress. Front Mol Biosci 2024; 11:1345585. [PMID: 38686015 PMCID: PMC11056619 DOI: 10.3389/fmolb.2024.1345585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/11/2024] [Indexed: 05/02/2024] Open
Abstract
Intertidal macroalgae are important research subjects in stress biology. Basic region-leucine zipper transcription factors (bZIPs) play an important regulatory role in the expression of target genes under abiotic stress. We herein identified a bZIP2 gene PhbZIP2 to regulate abiotic stress tolerance in Pyropia haitanensis, a representative intertidal macroalgal species. Cloning and sequencing of the cDNA characterized a BRLZ structure and an α coiled-coil structure between amino acids and Expression of PhbZIP2 was detected to upregulate under both high temperature and salt stresses. A DAP-seq analysis revealed the PhbZIP2-binding motifs of (T/C)TCCA(C/G) and A (A/G)AAA (G/A), which differed from the conserved motifs in plants. Overexpression of PhbZIP2 was indicative of a high temperature and salt stress tolerances in transgenic Chlamydomonas reinhardtii. It was suggested that PhbZIP2 was probably involved in regulating expression of the photosynthetic-related genes and the response to the abiotic stresses in P. haitanensis, which provide new insights for elucidating efficient adaptation strategies of intertidal macroalgae.
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Affiliation(s)
- Han Zhang
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Gaoxiong Zeng
- Fisheries College, Jimei University, Xiamen, China
- Freshwater Fisheries Research Institute of Fujian, Fuzhou, China
| | - Jiajia Xie
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Yichi Zhang
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Dehua Ji
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Yan Xu
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Chaotian Xie
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
| | - Wenlei Wang
- Fisheries College, Jimei University, Xiamen, China
- Fujian Engineering Research Center of Aquatic Breeding and Healthy Aquaculture, Xiamen, China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Xiamen, China
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