Alternaria alternata causing black spot of peach produces a host-specific toxin

Kazuoki Iwamoto; Shun Takamatsu; Mikihiro Yamamoto

doi:10.1007/s10327-019-00859-5

Alternaria alternata causing black spot of peach produces a host-specific toxin

Kazuoki Iwamoto, Shun Takamatsu, Mikihiro Yamamoto

School of Agriculture

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Here we report a new host-specific toxin that is produced by Alternaria alternata and is the eight reported for the fungus. The causal pathogen of black spot of peach produced a toxin in culture filtrates and in spore germination fluids. Toxin productivity during spore germination was closely related to pathogenicity of the pathogen. The degree of sensitivity of host plants to the toxin was consistent with that of susceptibility to the pathogen. Further, the toxin enabled infection by conidia of saprophytic A. alternata in peach leaves. Several cultivars showed resistance to the toxin and the pathogen, although no cultivars had an immune response. The toxin fit the criteria of a host-specific toxin and was designated AP-toxin.

Original language	English
Pages (from-to)	395-400
Number of pages	6
Journal	Journal of General Plant Pathology
Volume	85
Issue number	5
DOIs	https://doi.org/10.1007/s10327-019-00859-5
Publication status	Published - Sept 1 2019

Keywords

AP-toxin
Alternaria alternata
Black spot of peach

ASJC Scopus subject areas

Agronomy and Crop Science
Plant Science

Access to Document

10.1007/s10327-019-00859-5

Cite this

@article{9e13127a1064489dbe2d729ab9277f1f,

title = "Alternaria alternata causing black spot of peach produces a host-specific toxin",

abstract = "Here we report a new host-specific toxin that is produced by Alternaria alternata and is the eight reported for the fungus. The causal pathogen of black spot of peach produced a toxin in culture filtrates and in spore germination fluids. Toxin productivity during spore germination was closely related to pathogenicity of the pathogen. The degree of sensitivity of host plants to the toxin was consistent with that of susceptibility to the pathogen. Further, the toxin enabled infection by conidia of saprophytic A. alternata in peach leaves. Several cultivars showed resistance to the toxin and the pathogen, although no cultivars had an immune response. The toxin fit the criteria of a host-specific toxin and was designated AP-toxin.",

keywords = "AP-toxin, Alternaria alternata, Black spot of peach",

author = "Kazuoki Iwamoto and Shun Takamatsu and Mikihiro Yamamoto",

note = "Funding Information: The authors gratefully acknowledge Dr. Kouji Inoue and Dr. Hideo Nasu, Agricultural Experiment Station, Okayama Prefectural General Agriculture Center for their valuable advice and thank the staff at the Center for kind permission to use isolate 9506 and the peach cultivar collection. We are also grateful to Professor Emeritus Tomonori Shiraishi, Graduate School of Natural Science and Technology, Okayama University, for valuable discussion. Publisher Copyright: {\textcopyright} 2019, The Phytopathological Society of Japan and Springer Japan KK, part of Springer Nature.",

year = "2019",

month = sep,

day = "1",

doi = "10.1007/s10327-019-00859-5",

language = "English",

volume = "85",

pages = "395--400",

journal = "Journal of General Plant Pathology",

issn = "1345-2630",

publisher = "Springer Japan",

number = "5",

}

TY - JOUR

T1 - Alternaria alternata causing black spot of peach produces a host-specific toxin

AU - Iwamoto, Kazuoki

AU - Takamatsu, Shun

AU - Yamamoto, Mikihiro

N1 - Funding Information: The authors gratefully acknowledge Dr. Kouji Inoue and Dr. Hideo Nasu, Agricultural Experiment Station, Okayama Prefectural General Agriculture Center for their valuable advice and thank the staff at the Center for kind permission to use isolate 9506 and the peach cultivar collection. We are also grateful to Professor Emeritus Tomonori Shiraishi, Graduate School of Natural Science and Technology, Okayama University, for valuable discussion. Publisher Copyright: © 2019, The Phytopathological Society of Japan and Springer Japan KK, part of Springer Nature.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Here we report a new host-specific toxin that is produced by Alternaria alternata and is the eight reported for the fungus. The causal pathogen of black spot of peach produced a toxin in culture filtrates and in spore germination fluids. Toxin productivity during spore germination was closely related to pathogenicity of the pathogen. The degree of sensitivity of host plants to the toxin was consistent with that of susceptibility to the pathogen. Further, the toxin enabled infection by conidia of saprophytic A. alternata in peach leaves. Several cultivars showed resistance to the toxin and the pathogen, although no cultivars had an immune response. The toxin fit the criteria of a host-specific toxin and was designated AP-toxin.

AB - Here we report a new host-specific toxin that is produced by Alternaria alternata and is the eight reported for the fungus. The causal pathogen of black spot of peach produced a toxin in culture filtrates and in spore germination fluids. Toxin productivity during spore germination was closely related to pathogenicity of the pathogen. The degree of sensitivity of host plants to the toxin was consistent with that of susceptibility to the pathogen. Further, the toxin enabled infection by conidia of saprophytic A. alternata in peach leaves. Several cultivars showed resistance to the toxin and the pathogen, although no cultivars had an immune response. The toxin fit the criteria of a host-specific toxin and was designated AP-toxin.

KW - AP-toxin

KW - Alternaria alternata

KW - Black spot of peach

UR - http://www.scopus.com/inward/record.url?scp=85065741060&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065741060&partnerID=8YFLogxK

U2 - 10.1007/s10327-019-00859-5

DO - 10.1007/s10327-019-00859-5

M3 - Article

AN - SCOPUS:85065741060

SN - 1345-2630

VL - 85

SP - 395

EP - 400

JO - Journal of General Plant Pathology

JF - Journal of General Plant Pathology

IS - 5

ER -

Alternaria alternata causing black spot of peach produces a host-specific toxin

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this