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Citation for Study 2076

Citation title: "Genetic relationships among populations of Gibberella zeae from barley, wheat, potato and sugar beet in the Upper Midwest of the United States".

This study was previously identified under the legacy study ID S2077 (Status: Published).

Citation

Burlakoti R., Ali S., Secor G., Neate S., Mcmullen M., & Adhikari T. 2008. Genetic relationships among populations of Gibberella zeae from barley, wheat, potato and sugar beet in the Upper Midwest of the United States. Phytopathology, null.

Authors

• Burlakoti R.
• Ali S.
• Secor G.
• Neate S.
• Mcmullen M.
• Adhikari T.

Abstract

Gibberella zeae, a causal agent of Fusarium head blight (FHB) in wheat and barley, is one of the most economically harmful pathogens of cereals in the United States. In recent years, the known host range of G. zeae has also expanded to non-cereal crops. However, there is a lack of information on the population genetic structure of G. zeae associated with non-cereal crops and across wheat cultivars. To test the hypothesis that G. zeae populations sampled from barley, wheat, potato, and sugar beet in the Upper Midwest of the United States are not mixtures of species or G. zeae clades, we analyzed sequence data of G. zeae, and confirmed that all populations studied were present in the same clade of G. zeae. Ten variable number tandem repeat (VNTR) markers were used to determine the genetic structure of G. zeae from the four crop populations. To examine the effect of wheat cultivars on the pathogen populations, 227 strains were sampled from 10 subpopulations according to wheat cultivar types. VNTR markers were used to analyze the genetic structure of these subpopulations. In all populations, gene (H = 0.453 to 0.612) and genotype diversity (GD = > 0.984) were high. There was little or no indication of linkage disequilibrium (r?d) in all G. zeae populations and subpopulations. In addition, high gene flow (Nm) values were observed between cereal and non-cereal populations (Nm = 10.69) and between FHB resistant and susceptible wheat cultivar subpopulations (Nm = 16.072), suggesting low population differentiation of G. zeae in this region. Analysis of molecular variance (AMOVA) also revealed high genetic variation (> 80%) among individuals within populations and subpopulations. However, low genetic variation (< 5%) was observed between cereal and non-cereal populations and between resistant and susceptible wheat subpopulations. Overall, these results suggest that the populations or subpopulations are likely a single large population of G. zeae affecting crops in the Upper Midwest of the United States.

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S2076
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref14886,
  	 author = {Rishi Ram  Burlakoti and Shaukat  Ali and Gary Allen  Secor and Stephen Michael  Neate and Marcia Powell  McMullen and Tika Bahadur  Adhikari},
  	 title = {Genetic relationships among populations of Gibberella zeae from barley, wheat, potato and sugar beet in the Upper Midwest of the United States},
  	 year = {2008},
  	 keywords = {},
  	 doi = {},
  	 url = {},
  	 pmid = {},
  	 journal = {Phytopathology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Gibberella zeae, a causal agent of Fusarium head blight (FHB) in wheat and barley, is one of the most economically harmful pathogens of cereals in the United States. In recent years, the known host range of G. zeae has also expanded to non-cereal crops. However, there is a lack of information on the population genetic structure of G. zeae associated with non-cereal crops and across wheat cultivars. To test the hypothesis that G. zeae populations sampled from barley, wheat, potato, and sugar beet in the Upper Midwest of the United States are not mixtures of species or G. zeae clades, we analyzed sequence data of G. zeae, and confirmed that all populations studied were present in the same clade of G. zeae. Ten variable number tandem repeat (VNTR) markers were used to determine the genetic structure of G. zeae from the four crop populations. To examine the effect of wheat cultivars on the pathogen populations, 227 strains were sampled from 10 subpopulations according to wheat cultivar types. VNTR markers were used to analyze the genetic structure of these subpopulations. In all populations, gene (H = 0.453 to 0.612) and genotype diversity (GD = > 0.984) were high. There was little or no indication of linkage disequilibrium (r?d) in all G. zeae populations and subpopulations. In addition, high gene flow (Nm) values were observed between cereal and non-cereal populations (Nm = 10.69) and between FHB resistant and susceptible wheat cultivar subpopulations (Nm = 16.072), suggesting low population differentiation of G. zeae in this region. Analysis of molecular variance (AMOVA) also revealed high genetic variation (> 80%) among individuals within populations and subpopulations. However, low genetic variation (< 5%) was observed between cereal and non-cereal populations and between resistant and susceptible wheat subpopulations. Overall, these results suggest that the populations or subpopulations are likely a single large population of G. zeae affecting crops in the Upper Midwest of the United States.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 14886
  AU  - Burlakoti,Rishi Ram 
  AU  - Ali,Shaukat 
  AU  - Secor,Gary Allen 
  AU  - Neate,Stephen Michael 
  AU  - McMullen,Marcia Powell 
  AU  - Adhikari,Tika Bahadur 
  T1  - Genetic relationships among populations of Gibberella zeae from barley, wheat, potato and sugar beet in the Upper Midwest of the United States
  PY  - 2008
  KW  - 
  UR  - 
  N2  - Gibberella zeae, a causal agent of Fusarium head blight (FHB) in wheat and barley, is one of the most economically harmful pathogens of cereals in the United States. In recent years, the known host range of G. zeae has also expanded to non-cereal crops. However, there is a lack of information on the population genetic structure of G. zeae associated with non-cereal crops and across wheat cultivars. To test the hypothesis that G. zeae populations sampled from barley, wheat, potato, and sugar beet in the Upper Midwest of the United States are not mixtures of species or G. zeae clades, we analyzed sequence data of G. zeae, and confirmed that all populations studied were present in the same clade of G. zeae. Ten variable number tandem repeat (VNTR) markers were used to determine the genetic structure of G. zeae from the four crop populations. To examine the effect of wheat cultivars on the pathogen populations, 227 strains were sampled from 10 subpopulations according to wheat cultivar types. VNTR markers were used to analyze the genetic structure of these subpopulations. In all populations, gene (H = 0.453 to 0.612) and genotype diversity (GD = > 0.984) were high. There was little or no indication of linkage disequilibrium (r?d) in all G. zeae populations and subpopulations. In addition, high gene flow (Nm) values were observed between cereal and non-cereal populations (Nm = 10.69) and between FHB resistant and susceptible wheat cultivar subpopulations (Nm = 16.072), suggesting low population differentiation of G. zeae in this region. Analysis of molecular variance (AMOVA) also revealed high genetic variation (> 80%) among individuals within populations and subpopulations. However, low genetic variation (< 5%) was observed between cereal and non-cereal populations and between resistant and susceptible wheat subpopulations. Overall, these results suggest that the populations or subpopulations are likely a single large population of G. zeae affecting crops in the Upper Midwest of the United States.
  L3  - 
  JF  - Phytopathology
  VL  - 
  IS  - 
  ER  -