scholarly journals Mapping of genes abundantly expressed during fruiting body formation of Lentinula edodes

2010 ◽  
Vol 60 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Kazuhiro Miyazaki ◽  
Miho Sakai ◽  
Yasumasa Miyazaki
Keyword(s):  
Fruiting Body ◽  
Lentinula Edodes ◽  
Fruiting Body Formation ◽  
Body Formation

scholarly journals Molecular Cloning, Characterization, and Differential Expression of a Glucoamylase Gene from the Basidiomycetous Fungus Lentinula edodes

2000 ◽  
Vol 66 (6) ◽  
pp. 2531-2535 ◽  
Author(s):  
J. Zhao ◽  
Y. H. Chen ◽  
H. S. Kwan
Keyword(s):  
Gene Expression ◽  
Fruiting Body ◽  
Lentinula Edodes ◽  
Catalytic Domain ◽  
Coding Region ◽  
Fruiting Body Formation ◽  
Mycelium Growth ◽  
Body Formation ◽  
Basidiomycetous Fungus ◽  
Glucoamylase Gene

ABSTRACT The complete nucleotide sequence of putative glucoamylase genegla1 from the basidiomycetous fungus Lentinula edodes strain L54 is reported. The coding region of the genomic glucoamylase sequence, which is preceded by eukaryotic promoter elements CAAT and TATA, spans 2,076 bp. The gla1 gene sequence codes for a putative polypeptide of 571 amino acids and is interrupted by seven introns. The open reading frame sequence of thegla1 gene shows strong homology with those of other fungal glucoamylase genes and encodes a protein with an N-terminal catalytic domain and a C-terminal starch-binding domain. The similarity between the Gla1 protein and other fungal glucoamylases is from 45 to 61%, with the region of highest conservation found in catalytic domains and starch-binding domains. We compared the kinetics of glucoamylase activity and levels of gene expression in L. edodes strain L54 grown on different carbon sources (glucose, starch, cellulose, and potato extract) and in various developmental stages (mycelium growth, primordium appearance, and fruiting body formation). Quantitative reverse transcription PCR utilizing pairs of primers specific forgla1 gene expression shows that expression ofgla1 was induced by starch and increased during the process of fruiting body formation, which indicates that glucoamylases may play an important role in the morphogenesis of the basidiomycetous fungus.

scholarly journals Expression Profile of Laccase Gene Family in White-Rot Basidiomycete Lentinula edodes under Different Environmental Stresses

Genes ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1045
Author(s):  
Lianlian Yan ◽  
Ruiping Xu ◽  
Yinbing Bian ◽  
Hongxian Li ◽  
Yan Zhou
Keyword(s):  
Gene Family ◽  
Fruiting Body ◽  
Lentinula Edodes ◽  
Expression Profiles ◽  
Draft Genome ◽  
White Rot ◽  
Laccase Gene ◽  
Fruiting Body Formation ◽  
Body Formation ◽  
Laccase Genes

Laccases belong to ligninolytic enzymes and play important roles in various biological processes of filamentous fungi, including fruiting-body formation and lignin degradation. The process of fruiting-body development in Lentinula edodes is complex and is greatly affected by environmental conditions. In this paper, 14 multicopper oxidase-encoding (laccase) genes were analyzed in the draft genome sequence of L. edodes strain W1-26, followed by a search of multiple stress-related Cis-elements in the promoter region of these laccase genes, and then a transcription profile analysis of 14 laccase genes (Lelcc) under the conditions of different carbon sources, temperatures, and photoperiods. All laccase genes were significantly regulated by varying carbon source materials. The expression of only two laccase genes (Lelcc5 and Lelcc6) was induced by sodium-lignosulphonate and the expression of most laccase genes was specifically upregulated in glucose medium. Under different temperature conditions, the expression levels of most laccase genes decreased at 39 °C and transcription was significantly increased for Lelcc1, Lelcc4, Lelcc5, Lelcc9, Lelcc12, Lelcc13, and Lelcc14 after induction for 24 h at 10 °C, indicating their involvement in primordium differentiation. Tyrosinase, which is involved in melanin synthesis, was clustered with the same group as Lelcc4 and Lelcc7 in all the different photoperiod treatments. Meanwhile, five laccase genes (Lelcc8, Lelcc9, Lelcc12, Lelcc13, and Lelcc14) showed similar expression profiles to that of two blue light receptor genes (LephrA and LephrB) in the 12 h light/12 h dark treatment, suggesting the involvement of laccase genes in the adaptation process of L. edodes to the changing environment and fruiting-body formation. This study contributes to our understanding of the function of the different Lelcc genes and facilitates the screening of key genes from the laccase gene family for further functional research.

scholarly journals FibA and PilA act cooperatively during fruiting body formation of Myxococcus xanthus

2006 ◽  
Vol 61 (5) ◽  
pp. 1283-1293 ◽  
Author(s):  
Pamela J. Bonner ◽  
Wesley P. Black ◽  
Zhaomin Yang ◽  
Lawrence J. Shimkets
Keyword(s):  
Fruiting Body ◽  
Myxococcus Xanthus ◽  
Fruiting Body Formation ◽  
Body Formation

Fruiting-Body Formation of Tricholoma giganteum on Artificial Medium.

1995 ◽  
Vol 33 (3) ◽  
pp. 169-174 ◽  
Author(s):  
Kazunari INABA ◽  
Yoshinori TAKANO ◽  
Yoshikazu MAYUZUMI ◽  
Toshirou MITSUNAGA
Keyword(s):  
Fruiting Body ◽  
Fruiting Body Formation ◽  
Artificial Medium ◽  
Body Formation

Culmination in the slime mould Dictyostelium discoideum studied with a scanning electron microscope

Development ◽  
1976 ◽  
Vol 35 (2) ◽  
pp. 323-333
Author(s):  
D. J. Watts ◽  
T. E. Treffry
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dictyostelium Discoideum ◽  
Fruiting Body ◽  
Maximum Height ◽  
Slow Process ◽  
Fruiting Body Formation ◽  
Basal Disc ◽  
Body Formation ◽  
Scanning Electron

Myxamoebae of Dictyostelium discoideum were allowed to develop on cellulose acetate filters, and specimens taken at various stages of fruiting body formation were prepared for study by scanning electron microscopy. In the immature fruiting body where the mass of pre-spore cells has just been lifted off the substratum by the developing stalk, the pre-spore cells are irregular in shape and are similar in appearance to cells in aggregates at earlier stages of development. As the stalk lengthens, the pre-spore cells gradually separate from one another and become rounded and elongate, but mature spores are not visible until the fruiting body reaches its maximum height. It is concluded that, contrary to previous reports, spore maturation is a slow process and is not completed until the sorus becomes pigmented. The mature stalk is surrounded by a smooth cellulose sheath but this does not envelop the cells of the basal disc, which remain discrete. The fruiting body is enclosed in a slime sheath and this may be important in holding together the mass of spores.

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