1
|
Katsukawa S, Shishido K. Analysis ofrecQGene Transcript in Fruiting Bodies of Basidiomycetous MushroomLentinula edodes. Biosci Biotechnol Biochem 2014; 69:2247-9. [PMID: 16306713 DOI: 10.1271/bbb.69.2247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Quantitative reverse transcription PCR analysis and total RNA staining demonstrated that Lentinula edodes recQ gene (Le.recQ) transcript is present in all the parts of the fruiting body, but in hymenophore at the highest density. Results of in situ RNA-RNA hybridization showed that the Le.recQ transcript level within the hymenophore is higher in the hymenium, subhymenium, and the outer region of the trama. Trama cells themselves contain a lower level of the transcript.
Collapse
Affiliation(s)
- Shiho Katsukawa
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan.
| | | |
Collapse
|
2
|
The basidiomycetous mushroom Lentinula edodes white collar-2 homolog PHRB, a partner of putative blue-light photoreceptor PHRA, binds to a specific site in the promoter region of the L. edodes tyrosinase gene. Fungal Genet Biol 2009; 46:333-41. [DOI: 10.1016/j.fgb.2009.01.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Revised: 11/27/2008] [Accepted: 01/12/2009] [Indexed: 01/15/2023]
|
3
|
Nakazawa T, Kaneko S, Miyazaki Y, Jojima T, Yamazaki T, Katsukawa S, Shishido K. Basidiomycete Lentinula edodes CDC5 and a novel interacting protein CIPB bind to a newly isolated target gene in an unusual manner. Fungal Genet Biol 2008; 45:818-28. [DOI: 10.1016/j.fgb.2008.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2007] [Revised: 02/25/2008] [Accepted: 02/25/2008] [Indexed: 11/27/2022]
|
4
|
Gene expression studies of the dikaryotic mycelium and primordium of Lentinula edodes by serial analysis of gene expression. ACTA ACUST UNITED AC 2008; 112:950-64. [PMID: 18555678 DOI: 10.1016/j.mycres.2008.01.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Revised: 01/16/2008] [Accepted: 01/24/2008] [Indexed: 02/02/2023]
Abstract
Lentinula edodes (Shiitake mushroom) is a common edible mushroom that has high nutritional and medical value. Although a number of genes involved in the fruit of the species have been identified, little is known about the process of differentiation from dikaryotic mycelium to primordium. In this study, serial analysis of gene expression (SAGE) was applied to determine the gene expression profiles of the dikaryotic mycelium and primordium of L. edodes in an effort to advance our understanding of the molecular basis of fruit body development. A total of 6363 tags were extracted (3278 from the dikaryotic mycelium and 3085 from the primordium), 164 unique tags matched the in-house expressed sequence tag (EST) database. The difference between the expression profiles of the dikaryotic mycelium and primordium suggests that a specific set of genes is required for fruit body development. In the transition from the mycelium to the primordium, different hydrophobins were expressed abundantly, fewer structural genes were expressed, transcription and translation became active, different genes became involved in intracellular trafficking, and stress responses were expressed. These findings advance our understanding of fruit body development. We used cDNA microarray hybridization and Northern blotting to verify the SAGE results, and found SAGE to be highly efficient in the performance of transcriptome analysis. To our knowledge, this is the first SAGE study of a mushroom.
Collapse
|
5
|
Szeto CYY, Wong QWL, Leung GS, Kwan HS. Isolation and transcript analysis of two-component histidine kinase gene Le.nik1 in Shiitake mushroom, Lentinula edodes. ACTA ACUST UNITED AC 2007; 112:108-16. [PMID: 18234485 DOI: 10.1016/j.mycres.2007.08.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 08/24/2007] [Accepted: 08/31/2007] [Indexed: 11/27/2022]
Abstract
Le.nik1, a two-component histidine kinase gene of Lentinula edodes, the Shiitake mushroom, was identified. The relationship between this two-component signal transduction system and mushroom development was studied. We used a modified RNA arbitrarily-primed PCR (RAP-PCR) method to isolate Le.nik1 as a differentially expressed gene during L. edodes development. We determined the 6.29kb full-length cDNA sequence of Le.nik1. It had high sequence homology to Neurospora crassa nik1, which encoded a histidine kinase essential for development and osmotic response. In L. edodes, the expression level of Le.nik1 was highest during primordium formation and fruiting body maturation. The transcripts were localized predominantly in the developing hymenophores, or mushroom gills, which may indicate the role of a two-component signal transduction system in cell differentiation during mushroom development. Mannitol stress influenced transcript expression of Le.nik1, suggesting that it may be involved in osmo-sensing and regulation. To our knowledge, this is the first report on the two-component system in mushrooms and the first analysis on the distribution of Le.nik1 transcript in the course of fruiting body formation and in parts of fruiting bodies.
Collapse
Affiliation(s)
- Carol Y Y Szeto
- Molecular Biotechnology Programme, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | | | | | | |
Collapse
|
6
|
Endocytosis in the shiitake mushroom Lentinula edodes and involvement of GTPase LeRAB7. EUKARYOTIC CELL 2007; 6:2406-18. [PMID: 17921351 DOI: 10.1128/ec.00222-07] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Endocytosis is the process by which substrates enter a cell without passing through the plasma membrane but rather invaginate the cell membrane and form intracellular vesicles. Rab7 regulates endocytic trafficking between early and late endosomes and between late endosomes and lysosomes. LeRab7 in Lentinula edodes is strongly homologous to Rab7 in Homo sapiens. Receptors for activated C kinase-1 (LeRACK1) and Rab5 GTPase (LeRAB5) were isolated as interacting partners of LeRab7, and the interactions were confirmed by in vivo and in vitro protein interaction assays. The three genes showed differential expression in the various developmental stages of the mushroom. In situ hybridization showed that the three transcripts were localized in regions of active growth, such as the outer region of trama cells, and the subhymenium of the hymenophore of mature fruiting bodies and the prehymenophore of young fruiting bodies. The existence of endocytosis in the mycelium and hymenophores was confirmed by the internalization of FM4-64. LeRAB7 was partially colocalized with the AM4-64 and was located in the late endocytic pathway. This is the first report of the presence of endocytosis in homobasidiomycetes. LeRAB7, LeRAB5, and LeRACK1 may contribute to the growth of L. edodes and cell differentiation in hymenophores.
Collapse
|
7
|
Miyazaki Y, Kaneko S, Sunagawa M, Shishido K, Yamazaki T, Nakamura M, Babasaki K. The fruiting-specific Le.flp1 gene, encoding a novel fungal fasciclin-like protein, of the basidiomycetous mushroom Lentinula edodes. Curr Genet 2007; 51:367-75. [PMID: 17476508 DOI: 10.1007/s00294-007-0133-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Revised: 02/14/2007] [Accepted: 02/26/2007] [Indexed: 01/18/2023]
Abstract
To understand the molecular mechanisms of fruiting body formation of basidiomycetous mushrooms, we have isolated over a 100 of developmentally regulated genes that were specifically transcribed during fruiting body development in Lentinula edodes (Shiitake-mushroom) by a subtractive hybridization, cDNA-RDA (cDNA representational difference analysis). One of these genes, named Le.flp1, was isolated from the primordial cDNA library of L. edodes, and the expression product of Le.flp1 and putative fungal homologues contained a characteristic region, homologous to the Fas domain of fasciclin family proteins, which are capable of promoting cell adhesion through Fas domain-mediated homophilic interactions in various organisms. RT-PCR analyses suggested that Le.flp1 was specifically expressed in primordia and mature fruiting bodies. In situ hybridization indicated that Le.flp1 transcripts were distributed distinctly in the following tissues: the inside of gills of fruiting bodies, especially at the boundary between the subhymenium and trama, where there is active proliferation of basidium cells for producing basidiospores; peripheral regions of the primordium, pileus and stipe; and both inner tissue and outer regions of the stipe. Our results suggest the hypothesis that Le.flp1 plays a role in cellular differentiation and development in ubiquitous tissues during fruiting body formation in L. edodes, possibly through cell adhesion.
Collapse
Affiliation(s)
- Yasumasa Miyazaki
- Department of Applied Microbiology, Forestry and Forest Products Research Institute, P. O. box 16, Tsukuba-Norin, 305-8687, Japan.
| | | | | | | | | | | | | |
Collapse
|
8
|
Szeto CYY, Leung GS, Kwan HS. Le.MAPK and its interacting partner, Le.DRMIP, in fruiting body development in Lentinula edodes. Gene 2007; 393:87-93. [PMID: 17383119 DOI: 10.1016/j.gene.2007.01.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2006] [Revised: 01/20/2007] [Accepted: 01/24/2007] [Indexed: 11/29/2022]
Abstract
Development in shiitake mushroom, Lentinula edodes, is a unique process and studies of the molecular basis of this process may lead to improvement in mushroom cultivation. Previous studies have identified a number of signal transduction genes related to mushroom development, but those genes have not been well characterized. The present work characterized a developmentally regulated MAP kinase, Le.MAPK, and its interaction with a novel gene, Le.DRMIP in the signal transduction pathway. The expression profiles of these two genes reveal their importance in fruiting body initiation and development; the Le.DRMIP transcript is localized predominantly in the developing young fruiting body and gills, which further signifies its role in cell differentiation during mushroom development.
Collapse
Affiliation(s)
- Carol Y Y Szeto
- Molecular Biotechnology Programme, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR
| | | | | |
Collapse
|
9
|
Akiyama R, Sato Y, Kajiwara S, Shishido K. Cloning and expression of cytochrome P450 genes, belonging to a new P450 family, of the basidiomycete Lentinula edodes. Biosci Biotechnol Biochem 2002; 66:2183-8. [PMID: 12450130 DOI: 10.1271/bbb.66.2183] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Three cytochrome P450 genes, named Le. cyp1, Le. cyp2, and Le. cyp3, were isolated from the basidiomycete Lentinula edodes. Le. cyp1 and Le. cyp2 contained coding regions of 1500 bp and 1497 bp, respectively, but Le. cyp3 was found to be a defective gene. The deduced amino acid sequences of Le. CYP1 (CYP510A1, 500 amino acids) and Le. CYP2 (CYP510A3, 499 amino acids) were highly similar to each other (87% identical) and they had 32-33% identities to that of Coprinus cinereus P450 (CYP502) and 27-28% identities to those of two Aspergillus P450s (CYP64 family). Quantitative RT-PCR analysis of the transcripts of Le. cyp1 and Le. cyp2 genes in the course of fruiting-body development of L. edodes showed that the primordium seems to contain larger amounts of these transcripts. The transcript levels of both of these genes in the stipe of the premature fruiting body were higher than those in the whole pileus and gill tissue.
Collapse
Affiliation(s)
- Ryoko Akiyama
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 226-8501, Japan.
| | | | | | | |
Collapse
|
10
|
Nishizawa H, Miyazaki Y, Kaneko S, Shishido K. Distribution of hydrophobin 1 gene transcript in developing fruiting bodies of Lentinula edodes. Biosci Biotechnol Biochem 2002; 66:1951-4. [PMID: 12400697 DOI: 10.1271/bbb.66.1951] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Results of in situ RNA-RNA hybridization showed the presence of transcripts of the Lentinula edodes hydrophobin 1 gene, Le.hyd1, everywhere in the mycelial tissues of developing fruiting bodies except for the top parts of the pileus (cap) and for the prehymenophore. A high level of the transcript was detected in the parts surrounding the prehymenophore.
Collapse
Affiliation(s)
- Hiroo Nishizawa
- Department of Life Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | | | | | | |
Collapse
|
11
|
|