4.0 Article

ChMCO1 of Cochliobolus heterostrophus is a new class of metallo-oxidase, playing an important role in DHN-melanization

期刊

MYCOSCIENCE
卷 51, 期 5, 页码 327-336

出版社

ELSEVIER SCIENCE BV
DOI: 10.1007/s10267-010-0043-x

关键词

Filamentous fungi; Laccase; Mco1; Melanin

类别

向作者/读者索取更多资源

A metallo-oxidase gene from a phytopathogenic filamentous fungus, Cochliobolus heterostrophus was cloned. Structural prediction of ChMco1 indicated that this protein lacks a transmembrane helix and is soluble, whereas other known fungal metallo-oxidases including Saccharomyces cerevisiae FET3 are localized to the cell membrane. The results of searches in fungal genomic databases and phylogenetic analysis of fungal metallo-oxidases revealed that ChMco1 and its allies are distinct homologues of Fet3 and unique to filamentous ascomycetous species including C. heterostrophus. We performed a functional analysis of ChMCO1 by generating null mutants for the ChMco1 gene. The ChMco1 null (a dagger ChMco1) mutants clearly had reduced melanization, although they showed normal growth and conidiation. Results also show that a dagger ChMco1 mutants lost laccase activity. These results suggest that ChMCO1 is a novel class of metallo-oxidase that is necessary for laccase activity and melanization.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.0
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Mycology

Genetic analyses of reddish-brown polyoxin-resistant mutants of Bipolaris maydis

Daidi Chen, Hiroshi Masumoto, Yuki Kitade, Kosuke Izumitsu, Chihiro Tanaka

MYCOSCIENCE (2018)

Article Genetics & Heredity

Cla4 PAK-like kinase is required for pathogenesis, asexual/sexual development and polarized growth in Bipolaris maydis

Yuki Kitade, Takuya Sumita, Kosuke Izumitsu, Chihiro Tanaka

CURRENT GENETICS (2019)

Article Mycology

An adaptor protein BmSte50 interacts with BmSte11 MAPKKK and is involved in host infection, conidiation, melanization, and sexual development in Bipolaris maydis

Takuya Sumita, Kosuke Izumitsu, Sae Shigeyoshi, Shunsuke Gotoh, Hiroki Yoshida, Kenya Tsuji, Hiroshi Yoshida, Yuki Kitade, Chihiro Tanaka

MYCOSCIENCE (2020)

Article Mycology

Athelia termitophila sp. nov. is the teleomorph of the termite ball fungus Fibularhizoctonia sp.

Nitaro Maekawa, Hiroaki Yokoi, Kozue Sotome, Kenji Matsuura, Chihiro Tanaka, Naoki Endo, Akira Nakagiri, Shuji Ushijima

MYCOSCIENCE (2020)

Article Microbiology

An arabinose- induced enhancement of asexual reproduction and concomitant changes in metabolic state in the filamentous fungus Bipolaris maydis

Hiroshi Yoshida, Chihiro Tanaka

Summary: The study demonstrates that l-arabinose enhances resource allocation to asexual reproduction in B. maydis HITO7711 at the cost of vegetative growth, and suggests that this is mediated by the concomitant stimulation of the HMP shunt.

MICROBIOLOGY-SGM (2021)

Article Agronomy

Effects of Phytophthora sojae inoculation under flooded conditions on growth of soybean seedlings

Terufumi Tada, Momo Kato, Chihiro Tanaka, Tatsuhiko Shiraiwa

Summary: The study revealed that soybean seedlings that survived Phytophthora sojae infection had poorer root growth compared to non-inoculated plants, with flooding having limited effects on growth parameters.

PLANT PRODUCTION SCIENCE (2021)

Article Mycology

An exocyst component, Sec5, is essential for ascospore formation in Bipolaris maydis

Kenya Tsuji, Yuki Kitade, Takuya Sumita, Chihiro Tanaka

Summary: The study on the function of the Sec5 gene in Bipolaris maydis reveals its impact on hyphal growth and pathogenicity, as well as abnormal development of ascospores in sexual reproduction.

MYCOSCIENCE (2021)

Article Plant Sciences

Effects of wounding and relative humidity on the incidence of Phytophthora root and stem rot in soybean seedlings

Terufumi Tada, Chihiro Tanaka, Tomoyuki Katsube-Tanaka, Tatsuhiko Shiraiwa

Summary: The study found that the development of Phytophthora root and stem rot (PRSR) in soybeans is influenced by the degree of wounding and relative humidity. High humidity stimulates disease incidence. The mortality and infection rates of wounded seedlings vary depending on the depth of the wound and humidity levels.

PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY (2021)

Article Biotechnology & Applied Microbiology

Physiological function of hydrophobin Vmh3 in lignin degradation by white-rot fungus Pleurotus ostreatus

Junxian Han, Moriyuki Kawauchi, Yuki Terauchi, Akira Yoshimi, Chihiro Tanaka, Takehito Nakazawa, Yoichi Honda

Summary: Hydrophobins are small-secreted proteins with hydrophobic and hydrophilic parts that can form amphiphilic films at the air-liquid interface. In the white-rot fungus Pleurotus ostreatus, more than 20 hydrophobin genes have been identified. Previous studies have shown that three hydrophobin genes are mainly expressed under ligninolytic conditions, and the vmh3 gene is downregulated in delignification-deficient mutant strains. This study focuses on the function of hydrophobin Vmh3 and demonstrates its role in lignin degradation.

LETTERS IN APPLIED MICROBIOLOGY (2023)

Article Mycology

Meiotic Silencing in Dothideomycetous Bipolaris maydis

Kenya Tsuji, Yuki Kitade, Akira Yoshimi, Chihiro Tanaka

Summary: This study investigates the functional MSUD system in Bipolaris maydis and suggests that ascus dominance in this fungus is caused by RNA silencing triggered by unpaired DNA, similar to Neurospora crassa. The study also shows the conservation of posttranscriptional regulation in filamentous ascomycetes.

FRONTIERS IN FUNGAL BIOLOGY (2022)

Article Mycology

Downregulation of the ypdA Gene Encoding an Intermediate of His-Asp Phosphorelay Signaling in Aspergillus nidulans Induces the Same Cellular Effects as the Phenylpyrrole Fungicide Fludioxonil

Akira Yoshimi, Daisuke Hagiwara, Miyako Ono, Yasuyuki Fukuma, Yura Midorikawa, Kentaro Furukawa, Tomonori Fujioka, Osamu Mizutani, Natsuko Sato, Ken Miyazawa, Jun-ichi Maruyama, Junichiro Marui, Youhei Yamagata, Tasuku Nakajima, Chihiro Tanaka, Keietsu Abe

Summary: The study found that the HPt protein in the histidine-to-aspartate phosphorelay system plays a crucial role in responding to environmental stresses in the filamentous fungus Aspergillus nidulans. Activation of HPt is associated with cellular responses such as enhanced septation, nuclear fragmentation, and vacuole hypertrophy.

FRONTIERS IN FUNGAL BIOLOGY (2021)

暂无数据