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Park SJ, Ahn JW, Choi JI. Improved tolerance of recombinant Chlamydomonas rainhardtii with putative 2-amino-3-carboxymuconate-6-semialdehyde decarboxylase from Pyropia yezoensis to nitrogen starvation. J Microbiol 2021; 60:63-69. [PMID: 34964943 DOI: 10.1007/s12275-022-1491-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/16/2021] [Accepted: 11/17/2021] [Indexed: 11/29/2022]
Abstract
In a previous study, a putative 2-amino-3-carboxymuconate-6-semialdehyde decarboxylase (ACMSD) was highly expressed in a mutant strain of Pyropia yezoensis, which exhibited an improved growth rate compared to its wild strain. To investigate the functional role of the putative ACMSD (Pyacmsd) of P. yezoensis, the putative Pyacmsd was cloned and expressed in Chlamydomonas reinhardtii. Recombinant C. reinhardtii cells with Pyacmsd (Cr_Pyacmsd) exhibited enhanced tolerance compared to control C. reinhardtii cells (Cr_control) under nitrogen starvation. Notably, Cr_Pyacmsd cells showed accumulation of lipids in nitrogen-enriched conditions. These results demonstrate the role of Pyacmsd in the generation of acetyl-coenzyme A. Thus, it can be used to enhance the production of biofuel using microalgae such as C. reinhardtii and increase the tolerance of other biological systems to nitrogen-deficient conditions.
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Affiliation(s)
- Seo-Jeong Park
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Joon Woo Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
| | - Jong-Il Choi
- Department of Biotechnology and Bioengineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
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Wang D, You W, Chen N, Cao M, Tang X, Guan X, Qu W, Chen R, Mao Y, Poetsch A. Comparative Quantitative Proteomics Reveals the Desiccation Stress Responses of the Intertidal Seaweed NEOPORPHYRA haitanensis. JOURNAL OF PHYCOLOGY 2020; 56:1664-1675. [PMID: 33460107 DOI: 10.1111/jpy.13052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 07/06/2020] [Indexed: 06/12/2023]
Abstract
Neoporphyra haitanensis is an economically important red seaweed that inhabits upper intertidal zones. The thallus tolerates extreme fluctuating environmental stresses (e.g., surviving more than 80% water loss during low tides). To elucidate the global molecular responses relevant to this outstanding desiccation tolerance, a quantitative proteomics analysis of N. haitanensis under different desiccation treatments as well as rehydration was performed. According to the clustering of expression patterns and the functional interpretation of the 483 significantly differentially expressed proteins, a three-stage cellular response to desiccation stress and subsequent rehydration was proposed. Stage I: at the beginning of water loss, multiple signal transduction pathways were triggered including lipid signaling, protein phosphorylation cascades, and histone acetylation controlling acetate biosynthesis to further modulate downstream hormone signaling. Protein protection by peptidyl-prolyl isomerase and ROS scavenging systems were also immediately switched on. Stage II: with the aggravation of stress, increases in antioxidant systems, the accumulation of LEA proteins, and the temporary biosynthesis of branched starch were observed. Multiple enzymes involved in redox homeostasis, including peroxiredoxin, thioredoxin, ascorbate peroxidase, superoxide dismutase, glutathione peroxidase, and glutathione reductase, were hypothesized to function in specific cellular compartments. Stage III: when the desiccated thalli had rehydrated for 30 mins, photosynthesis and carbon fixation were recovered, and antioxidant activities and protein structure protection were maintained at a high level. This work increases the understanding of the molecular responses to environmental stresses via a proteomic approach in red seaweeds and paves the way for further functional studies and genetic engineering.
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Affiliation(s)
- Dongmei Wang
- Key Laboratory of Marine Genetics and Breeding, Ocean University of China, Ministry of Education, Qingdao, 266003, China
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Wuxin You
- Plant Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
| | - Nianci Chen
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Min Cao
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Xianghai Tang
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Xiaowei Guan
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Weihua Qu
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Rui Chen
- College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Yunxiang Mao
- Key Laboratory of Marine Genetics and Breeding, Ocean University of China, Ministry of Education, Qingdao, 266003, China
- Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya, China
| | - Ansgar Poetsch
- Plant Biochemistry, Ruhr University Bochum, Bochum, 44801, Germany
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China
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Shi J, Wang W, Lin Y, Xu K, Xu Y, Ji D, Chen C, Xie C. Insight into transketolase of Pyropia haitanensis under desiccation stress based on integrative analysis of omics and transformation. BMC PLANT BIOLOGY 2019; 19:475. [PMID: 31694541 PMCID: PMC6836531 DOI: 10.1186/s12870-019-2076-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Pyropia haitanensis, distributes in the intertidal zone, can tolerate water losses exceeding 90%. However, the mechanisms enabling P. haitanensis to survive harsh conditions remain uncharacterized. To elucidate the mechanism underlying P. haitanensis desiccation tolerance, we completed an integrated analysis of its transcriptome and proteome as well as transgenic Chlamydomonas reinhardtii carrying a P. haitanensis gene. RESULTS P. haitanensis rapidly adjusted its physiological activities to compensate for water losses up to 60%, after which, photosynthesis, antioxidant systems, chaperones, and cytoskeleton were activated to response to severe desiccation stress. The integrative analysis suggested that transketolase (TKL) was affected by all desiccation treatments. Transgenic C. reinhardtii cells overexpressed PhTKL grew better than the wild-type cells in response to osmotic stress. CONCLUSION P. haitanensis quickly establishes acclimatory homeostasis regarding its transcriptome and proteome to ensure its thalli can recover after being rehydrated. Additionally, PhTKL is vital for P. haitanensis desiccation tolerance. The present data may provide new insights for the breeding of algae and plants exhibiting enhanced desiccation tolerance.
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Affiliation(s)
- Jianzhi Shi
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Wenlei Wang
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Yinghui Lin
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Kai Xu
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Yan Xu
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Dehua Ji
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Changsheng Chen
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
| | - Chaotian Xie
- Fisheries College, Jimei University, Xiamen, 361021 China
- Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture, Xiamen, 361021 China
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