1
|
Zhang Q, Song S, Gao D, Yan X. Comparative transcriptome analysis between abundant and deficient spore strains provides novel insight into gene regulatory networks and mechanisms of monospore production in bladed Bangiales. AQUACULTURE AND FISHERIES 2023. [DOI: 10.1016/j.aaf.2021.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
2
|
Xiong B, Gu X, Qiu X, Dong Z, Ye S, Sun G, Huang S, Liu X, Xi L, Wang Z. Variability in CitXET expression and XET activity in Citrus cultivar Huangguogan seedlings with differed degrees of etiolation. PLoS One 2017; 12:e0178973. [PMID: 28617857 PMCID: PMC5472283 DOI: 10.1371/journal.pone.0178973] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 05/22/2017] [Indexed: 12/14/2022] Open
Abstract
Considering the known effects of xyloglucan endotransglycosylase (XET) on plant growth and development, we aimed to determine whether XETs help to regulate the growth and elongation of Huangguogan shoots and roots. We confirmed a possible role for XET during seedling etiolation. Our results revealed that the roots of etiolated seedlings (H-E) were longer than those of green seedlings (H-G). However, shoot length exhibited the opposite pattern. We also observed positive and negative effects on the xyloglucan-degrading activity of XET in the root sub-apical region and shoots of etiolated Huangguogan seedling, respectively. There was a significant down-regulation in CitXET expression in the etiolated shoots at 15 days after seed germination. On the contrary, it was significantly increased in the root sub-apical region of etiolated and multicolored seedlings at 15 days after seed germination. The XET coding sequence (i.e., CitXET) was cloned from Huangguogan seedlings using gene-specific primers. The encoded amino acid sequence was predicted by using bioinformatics-based methods. The 990-bp CitXET gene was highly homologous to other XET genes. The CitXET protein was predicted to contain 319 amino acids, with a molecular mass of 37.45 kDa and an isoelectric point of 9.05. The predicted molecular formula was C1724H2548N448O466S14, and the resulting protein included only one transmembrane structure. The CitXET secondary structure consisted of four main structures (i.e., 21% α-helix, 30.72% extended strand, 9.09% β-turn, and 39.18% random coil). Analyses involving the NCBI Conserved Domains Database (NCBI-CDD), InterPro, and ScanProsite revealed that CitXET was a member of the glycosyl hydrolase family 16 (GH16), and included the DEIDFEFLG motif. Our results indicate that the differed degrees of etiolation influenced the CitXET expression pattern and XET activity in Huangguogan seedlings. The differential changes in XET activity and CitXET expression levels in Huangguogan seedlings may influence the regulation of root and shoot development, and may be important for seedling etiolation.
Collapse
Affiliation(s)
- Bo Xiong
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xianjie Gu
- Mianyang Academy of Agricultural Sciences, Mianyang, Sichuan, China
| | - Xia Qiu
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhixiang Dong
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shuang Ye
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Guochao Sun
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shengjia Huang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xinya Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Lijuan Xi
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhihui Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan, China
- Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan, China
| |
Collapse
|
3
|
Im S, Lee HN, Jung HS, Yang S, Park EJ, Hwang MS, Jeong WJ, Choi DW. Transcriptome-Based Identification of the Desiccation Response Genes in Marine Red Algae Pyropia tenera (Rhodophyta) and Enhancement of Abiotic Stress Tolerance by PtDRG2 in Chlamydomonas. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2017; 19:232-245. [PMID: 28421378 DOI: 10.1007/s10126-017-9744-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 03/06/2017] [Indexed: 06/07/2023]
Abstract
Pyropia tenera (Kjellman) are marine red algae that grow in the intertidal zone and lose more than 90% of water during hibernal low tides every day. In order to identify the desiccation response gene (DRG) in P. tenera, we generated 1,444,210 transcriptome sequences using the 454-FLX platform from the gametophyte under control and desiccation conditions. De novo assembly of the transcriptome reads generated 13,170 contigs, covering about 12 Mbp. We selected 1160 differentially expressed genes (DEGs) in response to desiccation stress based on reads per kilobase per million reads (RPKM) expression values. As shown in green higher plants, DEGs under desiccation are composed of two groups of genes for gene regulation networks and functional proteins for carbohydrate metabolism, membrane perturbation, compatible solutes, and specific proteins similar to higher plants. DEGs that show no significant homology with known sequences in public databases were selected as DRGs in P. tenera. PtDRG2 encodes a novel polypeptide of 159 amino acid residues locating chloroplast. When PtDRG2 was overexpressed in Chlamydomonas, the PtDRG2 confer mannitol and salt tolerance in transgenic cells. These results suggest that Pyropia may possess novel genes that differ from green plants, although the desiccation tolerance mechanism in red algae is similar to those of higher green plants. These transcriptome sequences will facilitate future studies to understand the common processes and novel mechanisms involved in desiccation stress tolerance in red algae.
Collapse
Affiliation(s)
- Sungoh Im
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Ha-Nul Lee
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Hyun Shin Jung
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Sunghwan Yang
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea
| | - Eun-Jeong Park
- Seaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 58746, South Korea
| | - Mi Sook Hwang
- Seaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 58746, South Korea
| | - Won-Joong Jeong
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, South Korea
| | - Dong-Woog Choi
- Department of Biology Education, Chonnam National University and Khumho Research Institute, Gwangju, 61186, South Korea.
| |
Collapse
|
4
|
Abstract
Biomass derived from marine microalgae and macroalgae is globally recognized as a source of valuable chemical constituents with applications in the agri-horticultural sector (including animal feeds and health and plant stimulants), as human food and food ingredients as well as in the nutraceutical, cosmeceutical, and pharmaceutical industries. Algal biomass supply of sufficient quality and quantity however remains a concern with increasing environmental pressures conflicting with the growing demand. Recent attempts in supplying consistent, safe and environmentally acceptable biomass through cultivation of (macro- and micro-) algal biomass have concentrated on characterizing natural variability in bioactives, and optimizing cultivated materials through strain selection and hybridization, as well as breeding and, more recently, genetic improvements of biomass. Biotechnological tools including metabolomics, transcriptomics, and genomics have recently been extended to algae but, in comparison to microbial or plant biomass, still remain underdeveloped. Current progress in algal biotechnology is driven by an increased demand for new sources of biomass due to several global challenges, new discoveries and technologies available as well as an increased global awareness of the many applications of algae. Algal diversity and complexity provides significant potential provided that shortages in suitable and safe biomass can be met, and consumer demands are matched by commercial investment in product development.
Collapse
Affiliation(s)
- Dagmar B Stengel
- Botany and Plant Science, School of Natural Science, Ryan Institute for Environmental, Marine and Energy Research, National University of Ireland Galway, University Road, Galway, Ireland,
| | | |
Collapse
|
5
|
Shen S, Zhang G, Li Y, Wang L, Xu P, Yi L. Comparison of RNA expression profiles on generations of Porphyra yezoensis (Rhodophyta), based on suppression subtractive hybridization (SSH). BMC Res Notes 2011; 4:428. [PMID: 22013916 PMCID: PMC3207994 DOI: 10.1186/1756-0500-4-428] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 10/20/2011] [Indexed: 11/30/2022] Open
Abstract
Background Porphyra yezoensis Ueda is one of the most important edible seaweed, with a dimorphic life cycle which consists of gametophyte as macroscopical blade and sporophyte as microscopic filamentous. Conspicuous differences exist in the two generations, such as morphology, cell structure, biochemistry, physiology, and so on. The developmental process of Porphyra yezoensis has been studied thoroughly, but the mechanism is still ambiguous and few studies on genetic expression have been carried out. In this study, the suppression subtractive hybridization (SSH) method conducted to generate large-scale expressed sequence tags (EST) is designed to identify gene candidates related to the morphological and physiological differences between the gametophytic and sporophytic generations of Porphyra yezoensis Ueda. Findings Each 300 clones of sporophyte and gametophyte cells were dipped onto the membrane for hybridization. The result of dot-blot suggested there were 222 positive clones in gametophyte library and 236 positive clones in sporophyte library. 383 positive clones of strongest signals had been sequenced, and 191 EST sequences of gametophyte and 192 of sporophyte were obtained. A total of 196 genes were obtained, within which 104 genes were identified from the gametophyte and 92 from the sporophyte. Thirty-nine genes of the gametophyte and 62 genes of the sporophyte showed sequence similarity to those genes with known or putative functions which were classified according to their putative biological roles and molecular functions. The GO annotation showed about 58% of the cellular component of sporophyte and gametophyte cells were mainly located in cytoplasm and nucleus. The special genes were located in Golgi apparatus, and high expression in plastid, ribosome and endoplasmic reticulum. The main biological functions of gametophyte cells contributed to DNA repair/replication, carbohydrate metabolism, transport and transcription, especially in response to heat and oxidative stress. The sporophyte cell expresses more genes in transcription, transport, carbohydrate metabolism, particularly in signal transduction, DNA and protein modification, protein and nucleotide metabolism. Four genes are expressed on both gametophyte and sporophyte cells and eighteen genes have not been annotated. Conclusion According to the information of GO annotation, the gametophyte tends to growth and self- protection while the sporophyte tends to be more active in development. Interpretation of the differentially expressed genes revealed new insights into the molecular processes of the generation alternation of Porphyra yezoensis. Further investigation are needed due to insufficiency of functional genes research and indeterminancy of the functions of many sequences.
Collapse
Affiliation(s)
- Songdong Shen
- Department of Cell Biology, School of Biology and Basic Medical Sciences, Soochow University, Suzhou City, Jiangsu Province, 215123, P, R, China.
| | | | | | | | | | | |
Collapse
|
6
|
Kim E, Park HS, Jung Y, Choi DW, Jeong WJ, Park HS, Hwang MS, Park EJ, Gong YG. IDENTIFICATION OF THE HIGH-TEMPERATURE RESPONSE GENES FROM PORPHYRA SERIATA (RHODOPHYTA) EXPRESSION SEQUENCE TAGS AND ENHANCEMENT OF HEAT TOLERANCE OF CHLAMYDOMONAS (CHLOROPHYTA) BY EXPRESSION OF THE PORPHYRA HTR2 GENE(1). JOURNAL OF PHYCOLOGY 2011; 47:821-828. [PMID: 27020018 DOI: 10.1111/j.1529-8817.2011.01008.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Temperature is one of the major environmental factors that affect the distribution, growth rate, and life cycle of intertidal organisms, including red algae. In an effort to identify the genes involved in the high-temperature tolerance of Porphyra, we generated 3,979 expression sequence tags (ESTs) from gametophyte thalli of P. seriata Kjellm. under normal growth conditions and high-temperature conditions. A comparison of the ESTs from two cDNA libraries allowed us to identify the high temperature response (HTR) genes, which are induced or up-regulated as the result of high-temperature treatment. Among the HTRs, HTR2 encodes for a small polypeptide consisting of 144 amino acids, which is a noble nuclear protein. Chlamydomonas expressing the Porphyra HTR2 gene shows higher survival and growth rates than the wild-type strain after high-temperature treatment. These results suggest that HTR2 may be relevant to the tolerance of high-temperature stress conditions, and this Porphyra EST data set will provide important genetic information for studies of the molecular basis of high-temperature tolerance in marine algae, as well as in Porphyra.
Collapse
Affiliation(s)
- Euicheol Kim
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Hong-Sil Park
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Youngja Jung
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Dong-Woog Choi
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Won-Joong Jeong
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Hong-Seog Park
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Mi Sook Hwang
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Eun-Jeong Park
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| | - Yong-Gun Gong
- Department of Biology Education, Chonnam National University, Kwagnju, 500-757, KoreaPlant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaGenome Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, KoreaSeaweed Research Center, National Fisheries Research and Development Institute, Mokpo, 530-931, Korea
| |
Collapse
|
7
|
Gao S, Wang G, Yang R, Xie X, Pan G, Xu P, Zhu J. VARIATIONS IN THE CELL WALLS AND PHOTOSYNTHETIC PROPERTIES OF PORPHYRA YEZOENSIS (BANGIALES, RHODOPHYTA) DURING ARCHEOSPORE FORMATION(1). JOURNAL OF PHYCOLOGY 2011; 47:839-845. [PMID: 27020020 DOI: 10.1111/j.1529-8817.2011.01003.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The formation of archeospores is characteristic of Porphyra yezoensis Ueda and is important for Porphyra aquaculture. Recently, it has been regarded as a valuable seed source for propagation of thalli in mariculture. Cell wall composition changes are associated with archeospore formation in P. yezoensis. Here, we report changes of cell walls of P. yezoensis during archeospore formation. The surfaces of vegetative cells that were originally smooth became rougher and more protuberant as archeosporangia were formed. Ultimately, the cell walls of archeosporangia ruptured, and archeospores were released from the torn cell walls that were left at distal margins of thalli. With changes in cell walls, both effective quantum yield and maximal quantum yield of the same regions in thalli gradually increased during the transformation of vegetative cells to archeospores, suggesting that the photosynthetic properties of the same regions in thalli gradually increased. Meanwhile, photosynthetic parameters for different sectors of thalli were determined, which included the proximal vegetative cells, archeosporangia, and newly released archeospores. The changes in photosynthetic properties of different sectors of thalli were in accordance with that of the same regions in thalli at different stages. In addition, the photosynthetic responses of archeosporangia to light showed higher saturating irradiance levels than those of vegetative cells. All these results suggest that archeosporangial cell walls were not degraded prior to release but were ruptured via bulging of the archeospore within the sporangium, and ultimately, archeospores were discharged. The accumulation of carbohydrates during archeospore formation in P. yezoensis might be required for the release of archeospores.
Collapse
Affiliation(s)
- Shan Gao
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Guangce Wang
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Ruiling Yang
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Xiujun Xie
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Guanghua Pan
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Pu Xu
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| | - Jianyi Zhu
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaKey Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences (IOCAS), Qingdao 266071, ChinaCollege of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, ChinaDepartment of Biology, Changshu Institute of Technology, Changshu 215500, China
| |
Collapse
|
8
|
Profiling of the transcriptome of Porphyra yezoensis with Solexa sequencing technology. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s11434-011-4546-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
9
|
The Role of Porphyra in Sustainable Culture Systems: Physiology and Applications. CELLULAR ORIGIN, LIFE IN EXTREME HABITATS AND ASTROBIOLOGY 2010. [DOI: 10.1007/978-90-481-8569-6_19] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
10
|
Porphyra: Complex Life Histories in a Harsh Environment: P. umbilicalis, an Intertidal Red Alga for Genomic Analysis. CELLULAR ORIGIN, LIFE IN EXTREME HABITATS AND ASTROBIOLOGY 2010. [DOI: 10.1007/978-90-481-3795-4_7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
|
11
|
Teo SS, Ho CL, Teoh S, Rahim RA, Phang SM. TRANSCRIPTOMIC ANALYSIS OF GRACILARIA CHANGII (RHODOPHYTA) IN RESPONSE TO HYPER- AND HYPOOSMOTIC STRESSES(1). JOURNAL OF PHYCOLOGY 2009; 45:1093-1099. [PMID: 27032354 DOI: 10.1111/j.1529-8817.2009.00724.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Osmotic stress is one of the most significant natural abiotic stresses that occur in the intertidal zones. Seaweeds may physiologically acclimate to changing osmolarity by altering their transcriptome. Here, we investigated the transcriptomic changes of Gracilaria changii (B. M. Xia et I. A. Abbott) I. A. Abbott, J. Zhang et B. M. Xia in response to hyper- and hypoosmotic stresses using a cDNA microarray approach. Microarray analysis revealed that 199 and 200 genes from ∼3,300 genes examined were up- and down-regulated by >2-fold in seaweed samples treated at 50 parts per thousand (ppt) artificial seawater (ASW) compared with those at 30 ppt ASW, respectively. The number of genes that were up- and down-regulated by >2-fold in seaweed samples treated at 10 ppt ASW compared with those at 30 ppt ASW were 154 and 187, respectively. A majority of these genes were only differentially expressed under hyper- or hypoosmotic conditions, whereas 67 transcripts were affected by both stresses. The findings of this study have shed light on the expression profiles of many transcripts during the acclimation of G. changii to hyperosmotic and hypoosmotic conditions. This information may assist in the prioritization of genes to be examined in future studies.
Collapse
Affiliation(s)
- Swee-Sen Teo
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM-Serdang, Selangor, MalaysiaInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chai-Ling Ho
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM-Serdang, Selangor, MalaysiaInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Seddon Teoh
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM-Serdang, Selangor, MalaysiaInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Raha Abdul Rahim
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM-Serdang, Selangor, MalaysiaInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Siew-Moi Phang
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM-Serdang, Selangor, MalaysiaInstitute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| |
Collapse
|
12
|
Structural features and gene-expression profiles of actin homologs in Porphyra yezoensis (Rhodophyta). Gene 2008; 423:79-84. [PMID: 18678234 DOI: 10.1016/j.gene.2008.07.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Revised: 07/09/2008] [Accepted: 07/09/2008] [Indexed: 11/23/2022]
Abstract
The marine red alga Porphyra yezoensis contains an actin gene family consisting of at least four isoforms (PyACT1, 2, 3 and 4). The amino acid identity between isoforms exceeds 83%, and each contains a putative nuclear export signal (NES). We scanned the sequences for amino acids in regions homologous to the intermonomeric interface of actin filaments. Few residues expected to engage in cross-linking were conserved between the four isoforms. The results of the sequence analyses suggest that PyACT2 probably functions in the nucleus as a monomer (G-actin) or in other unconventional forms. In addition, the distribution and position of the introns were different from those in florideophycean actin genes. The expression level of PyACT3 in matured gametophytes was significantly higher than in those in a vegetative state, although the mRNA was detected at similar levels in both apical and basal parts of thalli. The expression levels of PyACT2 and 4, on the other hand, did not change significantly between the matured and vegetative gametophytes. The PyACT3 may serve as a molecular marker for monitoring thallus maturation in this species.
Collapse
|