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Citation for Study 25208

Citation title: "Characterization of Pyrenophora species causing brown leaf spot on Italian ryegrass (Lolium multiflorum) in Sichuan Province, China".

Study name: "Characterization of Pyrenophora species causing brown leaf spot on Italian ryegrass (Lolium multiflorum) in Sichuan Province, China".

This study is part of submission 25208 (Status: Published).

Citation

Xue L., Li C., James W.F., & Liu Y. 2020. Characterization of Pyrenophora species causing brown leaf spot on Italian ryegrass (Lolium multiflorum) in Sichuan Province, China. Plant Disease, 104(7): 1900-1907.

Authors

• Xue L. (submitter) 17608247609
• Li C.
• James W.F.
• Liu Y.

Abstract

Drechslera leaf spot (DLS) caused by Pyrenophora (Drechslera) species is one of the most serious diseases affecting Italian ryegrass (Lolium multiflorum) in China. Between 2015 and 2018, this disease was observed in three Italian ryegrass fields in the province of Sichuan, China. Average leaf disease incidence was approximately 1 to 12% but could range up to 100%. Symptoms appeared as brown or tan spots surrounded by a yellow halo, or brown to dark brown net blotch; subsequently, spots increased in number and size, and they later covered a large area of leaf, eventually causing leaf death. In this study, 86 strains of Pyrenophora fungi were isolated from leaf lesions of Italian ryegrass. Coupled with phylogenetic analysis of the internal transcribed spacer region, partial 28S ribosomal RNA gene, and glyceraldehyde-3-phosphate dehydrogenase gene, morphological characteristics showed that Pyrenophora dictyoides and P. nobleae are associated with Italian ryegrass in southwest China. Pathogenicity tests confirmed that both species can infect Italian ryegrass, causing leaf spot, whereas the virulence of the two species differed; P. nobleae showed lower pathogenicity to Italian ryegrass. This is the first time that these two Pyrenophora species were formally reported on Italian ryegrass based on both morphological and molecular characters. Overall, this study improves knowledge of the Pyrenophora species associated with Italian ryegrass and provides a foundation for control of this disease in the future.

Keywords

fungi, field crops, pathogen diversity, pathogen detection

External links

• DOI: 10.1094/PDIS-07-19-1457-RE

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S25208
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref30076,
  	 author = {Longhai  Xue and Chunjie  Li and White F. James and Yong  Liu},
  	 title = {Characterization of Pyrenophora species causing brown leaf spot on Italian ryegrass (Lolium multiflorum) in Sichuan Province, China},
  	 year = {2020},
  	 keywords = {fungi, field crops, pathogen diversity, pathogen detection},
  	 doi = {10.1094/PDIS-07-19-1457-RE},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Plant Disease},
  	 volume = {104},
  	 number = {7},
  	 pages = {1900--1907},
  	 abstract = {Drechslera leaf spot (DLS) caused by Pyrenophora (Drechslera) species is one of the most serious diseases affecting Italian ryegrass (Lolium multiflorum) in China. Between 2015 and 2018, this disease was observed in three Italian ryegrass fields in the province of Sichuan, China. Average leaf disease incidence was approximately 1 to 12% but could range up to 100%. Symptoms appeared as brown or tan spots surrounded by a yellow halo, or brown to dark brown net blotch; subsequently, spots increased in number and size, and they later covered a large area of leaf, eventually causing leaf death. In this study, 86 strains of Pyrenophora fungi were isolated from leaf lesions of Italian ryegrass. Coupled with phylogenetic analysis of the internal transcribed spacer region, partial 28S ribosomal RNA gene, and glyceraldehyde-3-phosphate dehydrogenase gene, morphological characteristics showed that Pyrenophora dictyoides and P. nobleae are associated with Italian ryegrass in southwest China. Pathogenicity tests confirmed that both species can infect Italian ryegrass, causing leaf spot, whereas the virulence of the two species differed; P. nobleae showed lower pathogenicity to Italian ryegrass. This is the first time that these two Pyrenophora species were formally reported on Italian ryegrass based on both morphological and molecular characters. Overall, this study improves knowledge of the Pyrenophora species associated with Italian ryegrass and provides a foundation for control of this disease in the future.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 30076
  AU  - Xue,Longhai 
  AU  - Li,Chunjie 
  AU  - James,White F.
  AU  - Liu,Yong 
  T1  - Characterization of Pyrenophora species causing brown leaf spot on Italian ryegrass (Lolium multiflorum) in Sichuan Province, China
  PY  - 2020
  KW  - fungi
  KW  - field crops
  KW  - pathogen diversity
  KW  - pathogen detection
  UR  - http://dx.doi.org/10.1094/PDIS-07-19-1457-RE
  N2  - Drechslera leaf spot (DLS) caused by Pyrenophora (Drechslera) species is one of the most serious diseases affecting Italian ryegrass (Lolium multiflorum) in China. Between 2015 and 2018, this disease was observed in three Italian ryegrass fields in the province of Sichuan, China. Average leaf disease incidence was approximately 1 to 12% but could range up to 100%. Symptoms appeared as brown or tan spots surrounded by a yellow halo, or brown to dark brown net blotch; subsequently, spots increased in number and size, and they later covered a large area of leaf, eventually causing leaf death. In this study, 86 strains of Pyrenophora fungi were isolated from leaf lesions of Italian ryegrass. Coupled with phylogenetic analysis of the internal transcribed spacer region, partial 28S ribosomal RNA gene, and glyceraldehyde-3-phosphate dehydrogenase gene, morphological characteristics showed that Pyrenophora dictyoides and P. nobleae are associated with Italian ryegrass in southwest China. Pathogenicity tests confirmed that both species can infect Italian ryegrass, causing leaf spot, whereas the virulence of the two species differed; P. nobleae showed lower pathogenicity to Italian ryegrass. This is the first time that these two Pyrenophora species were formally reported on Italian ryegrass based on both morphological and molecular characters. Overall, this study improves knowledge of the Pyrenophora species associated with Italian ryegrass and provides a foundation for control of this disease in the future.
  L3  - 10.1094/PDIS-07-19-1457-RE
  JF  - Plant Disease
  VL  - 104
  IS  - 7
  SP  - 1900
  EP  - 1907
  ER  -