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Citation for Study 26786

Citation title: "Trichoderma afroharzianum ear rot-a new disease on maize in Europe".

Study name: "Trichoderma afroharzianum ear rot-a new disease on maize in Europe".

This study is part of submission 26786 (Status: Published).

Citation

Pfordt A., Schiwek S., Karlovsky P., & Von tiedemann A. 2020. Trichoderma afroharzianum ear rot-a new disease on maize in Europe. Frontiers in Agronomy, .

Authors

• Pfordt A.
• Schiwek S. (submitter)
• Karlovsky P.
• Von tiedemann A.

Abstract

Trichoderma species are widespread filamentous fungi in soils, on plant roots and decaying plant residues. Due to their strong competitiveness and mycoparasitic activity against other fungi, particular strains of Trichoderma sp. are used in agriculture as biocontrol agents against plant pathogens. Commercial products based on strains of T. harzianum or T. afroharzianum have been applied to control Rhizoctonia spp., Fusarium spp. and Phytophthora spp. in various crops. In 2018, however, massive infections of Trichoderma on maize ears were recorded for the first time in a field in Southern Germany. Infected maize cobs were sampled, the fungus was isolated in pure culture and preliminary identified microscopically as Trichoderma harzianum. After silk channel inoculation in the greenhouse, ear rot disease of high severity was observed. In addition to fungal colonization, the dry matter content in cobs was significantly reduced compared to water inoculated cobs. In 2018 and 2019, a total of 13 T. harzianum isolates from maize cobs and maize stalks were isolated and tested, for pathogenicity on maize plants in the greenhouse, compared to several reference isolates. Four isolates proved to be highly aggressive, two biocontrol isolates, Trichodex (T39) and strain T12, induced slight infection and eleven isolates were non‐pathogenic. After sequencing the translation elongation factor 1α (tef‐1α), the four highly aggressive isolates were assigned to T. afroharzianum, while the commercial biocontrol isolates Trichodex (T39) and T12, as well as the other non-pathogenic strains belonged to T. harzianum, T. atroviride or T. tomentosum. This, to our knowledge, is the first report on Trichoderma sp. as a pathogen causing ear rot disease in maize in Europe with the potential to incite significant yield losses. We therefore propose to name this disease as ?Trichoderma ear rot on maize?.

Keywords

Trichoderma harzianum, Trichoderma afroharzianum, pathogenicity, Trichoderma ear rot on maize, Maize

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S26786
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref31124,
  	 author = {Annette  Pfordt and Simon  Schiwek and Petr  Karlovsky and Andreas  von Tiedemann},
  	 title = {Trichoderma afroharzianum ear rot-a new disease on maize in Europe},
  	 year = {2020},
  	 keywords = {Trichoderma harzianum, Trichoderma afroharzianum, pathogenicity, Trichoderma ear rot on maize, Maize},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Frontiers in Agronomy},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Trichoderma species are widespread filamentous fungi in soils, on plant roots and decaying plant residues. Due to their strong competitiveness and mycoparasitic activity against other fungi, particular strains of Trichoderma sp. are used in agriculture as biocontrol agents against plant pathogens. Commercial products based on strains of T. harzianum or T. afroharzianum have been applied to control Rhizoctonia spp., Fusarium spp. and Phytophthora spp. in various crops. In 2018, however, massive infections of Trichoderma on maize ears were recorded for the first time in a field in Southern Germany. Infected maize cobs were sampled, the fungus was isolated in pure culture and preliminary identified microscopically as Trichoderma harzianum. After silk channel inoculation in the greenhouse, ear rot disease of high severity was observed. In addition to fungal colonization, the dry matter content in cobs was significantly reduced compared to water inoculated cobs. In 2018 and 2019, a total of 13 T. harzianum isolates from maize cobs and maize stalks were isolated and tested, for pathogenicity on maize plants in the greenhouse, compared to several reference isolates. Four isolates proved to be highly aggressive, two biocontrol isolates, Trichodex (T39) and strain T12, induced slight infection and eleven isolates were non‐pathogenic. After sequencing the translation elongation factor 1α (tef‐1α), the four highly aggressive isolates were assigned to T. afroharzianum, while the commercial biocontrol isolates Trichodex (T39) and T12, as well as the other non-pathogenic strains belonged to T. harzianum, T. atroviride or T. tomentosum. This, to our knowledge, is the first report on Trichoderma sp. as a pathogen causing ear rot disease in maize in Europe with the potential to incite significant yield losses. We therefore propose to name this disease as ?Trichoderma ear rot on maize?.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 31124
  AU  - Pfordt,Annette 
  AU  - Schiwek,Simon 
  AU  - Karlovsky,Petr 
  AU  - von Tiedemann,Andreas 
  T1  - Trichoderma afroharzianum ear rot-a new disease on maize in Europe
  PY  - 2020
  KW  - Trichoderma harzianum
  KW  - Trichoderma afroharzianum
  KW  - pathogenicity
  KW  - Trichoderma ear rot on maize
  KW  - Maize
  UR  - http://dx.doi.org/
  N2  - Trichoderma species are widespread filamentous fungi in soils, on plant roots and decaying plant residues. Due to their strong competitiveness and mycoparasitic activity against other fungi, particular strains of Trichoderma sp. are used in agriculture as biocontrol agents against plant pathogens. Commercial products based on strains of T. harzianum or T. afroharzianum have been applied to control Rhizoctonia spp., Fusarium spp. and Phytophthora spp. in various crops. In 2018, however, massive infections of Trichoderma on maize ears were recorded for the first time in a field in Southern Germany. Infected maize cobs were sampled, the fungus was isolated in pure culture and preliminary identified microscopically as Trichoderma harzianum. After silk channel inoculation in the greenhouse, ear rot disease of high severity was observed. In addition to fungal colonization, the dry matter content in cobs was significantly reduced compared to water inoculated cobs. In 2018 and 2019, a total of 13 T. harzianum isolates from maize cobs and maize stalks were isolated and tested, for pathogenicity on maize plants in the greenhouse, compared to several reference isolates. Four isolates proved to be highly aggressive, two biocontrol isolates, Trichodex (T39) and strain T12, induced slight infection and eleven isolates were non‐pathogenic. After sequencing the translation elongation factor 1α (tef‐1α), the four highly aggressive isolates were assigned to T. afroharzianum, while the commercial biocontrol isolates Trichodex (T39) and T12, as well as the other non-pathogenic strains belonged to T. harzianum, T. atroviride or T. tomentosum. This, to our knowledge, is the first report on Trichoderma sp. as a pathogen causing ear rot disease in maize in Europe with the potential to incite significant yield losses. We therefore propose to name this disease as ?Trichoderma ear rot on maize?.
  L3  - 
  JF  - Frontiers in Agronomy
  VL  - 
  IS  - 
  ER  -