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Citation for Study 27370

Citation title: "Neofusicoccum caryigenum, a new species causing leaf die-back disease of pecan (Carya illinoinensis) ".

Study name: "Neofusicoccum caryigenum, a new species causing leaf die-back disease of pecan (Carya illinoinensis) ".

This study is part of submission 27370 (Status: Published).

Citation

Brewer M.T., Cameron C.J., Chan C.T., Dutta B., Gitaitis R.D., Grauke L.J., Brock J.H., & Brenneman T.B. 2021. Neofusicoccum caryigenum, a new species causing leaf die-back disease of pecan (Carya illinoinensis). Mycologia, .

Authors

• Brewer M.T. (submitter) 706-542-1254
• Cameron C.J.
• Chan C.T.
• Dutta B.
• Gitaitis R.D.
• Grauke L.J.
• Brock J.H.
• Brenneman T.B.

Abstract

Neofusicoccum species are endophytes and pathogens of woody hosts and members of the Botryosphaeriaceae. Leaf die-back is a new disease resulting in death of compound leaves and extensive defoliation of pecan trees (Carya illinoinensis) throughout the southeastern United States. Currently, the disease is primarily observed on trees that are not managed with fungicides for pecan scab. Preliminary observations of the fungus isolated from symptomatic leaves indicated it was a member of the genus Neofusicoccum. Our objectives were to confirm that this is the causal organism of leaf die-back disease of pecan and to determine if this disease is caused by a new or previously described species of Neofusicoccum. Morphological observations of pure cultures, conidiomata, conidiogenous cells, and conidia were consistent with members of the genus Neofusicoccum. Using Koch?s postulates, we established that Neofusicoccum sp. isolated from symptomatic leaves caused the disease. We sequenced the internal transcribed spacer of the rDNA (ITS), elongation factor 1-α (EF1-α), RNA polymerase subunit 2 (RPB2), and ?-tubulin (TUB2) of 11 isolates collected from Georgia and Texas. Phylogenetic and network analyses of these sequences combined with publicly available sequences of 40 members of the N. parvum - N. ribis species complex and the outgroup N. australe revealed that this fungus is a member of the species complex, but is genetically distinct from previously described species. We determined that leaf die-back of pecan is caused by a novel species, named herein N. caryigenum.

Keywords

Botryosphaeriaceae; cryptic species; hickory; Juglandaceae; plant pathogen

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S27370
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref31527,
  	 author = {Marin Talbot Brewer and Courtney J Cameron and Cynthia T Chan and Bhabesh  Dutta and Ronald D. Gitaitis and L J Grauke and Jason H. Brock and Timothy B. Brenneman},
  	 title = {Neofusicoccum caryigenum, a new species causing leaf die-back disease of pecan (Carya illinoinensis) },
  	 year = {2021},
  	 keywords = {Botryosphaeriaceae; cryptic species; hickory; Juglandaceae; plant pathogen},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Mycologia},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Neofusicoccum species are endophytes and pathogens of woody hosts and members of the Botryosphaeriaceae. Leaf die-back is a new disease resulting in death of compound leaves and extensive defoliation of pecan trees (Carya illinoinensis) throughout the southeastern United States. Currently, the disease is primarily observed on trees that are not managed with fungicides for pecan scab. Preliminary observations of the fungus isolated from symptomatic leaves indicated it was a member of the genus Neofusicoccum. Our objectives were to confirm that this is the causal organism of leaf die-back disease of pecan and to determine if this disease is caused by a new or previously described species of Neofusicoccum. Morphological observations of pure cultures, conidiomata, conidiogenous cells, and conidia were consistent with members of the genus Neofusicoccum. Using Koch?s postulates, we established that Neofusicoccum sp. isolated from symptomatic leaves caused the disease. We sequenced the internal transcribed spacer of the rDNA (ITS), elongation factor 1-α (EF1-α), RNA polymerase subunit 2 (RPB2), and ?-tubulin (TUB2) of 11 isolates collected from Georgia and Texas. Phylogenetic and network analyses of these sequences combined with publicly available sequences of 40 members of the N. parvum - N. ribis species complex and the outgroup N. australe revealed that this fungus is a member of the species complex, but is genetically distinct from previously described species. We determined that leaf die-back of pecan is caused by a novel species, named herein N. caryigenum. }
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 31527
  AU  - Brewer,Marin Talbot
  AU  - Cameron,Courtney J
  AU  - Chan,Cynthia T
  AU  - Dutta,Bhabesh 
  AU  - Gitaitis,Ronald D.
  AU  - Grauke,L J
  AU  - Brock,Jason H.
  AU  - Brenneman,Timothy B.
  T1  - Neofusicoccum caryigenum, a new species causing leaf die-back disease of pecan (Carya illinoinensis) 
  PY  - 2021
  KW  - Botryosphaeriaceae; cryptic species; hickory; Juglandaceae; plant pathogen
  UR  - http://dx.doi.org/
  N2  - Neofusicoccum species are endophytes and pathogens of woody hosts and members of the Botryosphaeriaceae. Leaf die-back is a new disease resulting in death of compound leaves and extensive defoliation of pecan trees (Carya illinoinensis) throughout the southeastern United States. Currently, the disease is primarily observed on trees that are not managed with fungicides for pecan scab. Preliminary observations of the fungus isolated from symptomatic leaves indicated it was a member of the genus Neofusicoccum. Our objectives were to confirm that this is the causal organism of leaf die-back disease of pecan and to determine if this disease is caused by a new or previously described species of Neofusicoccum. Morphological observations of pure cultures, conidiomata, conidiogenous cells, and conidia were consistent with members of the genus Neofusicoccum. Using Koch?s postulates, we established that Neofusicoccum sp. isolated from symptomatic leaves caused the disease. We sequenced the internal transcribed spacer of the rDNA (ITS), elongation factor 1-α (EF1-α), RNA polymerase subunit 2 (RPB2), and ?-tubulin (TUB2) of 11 isolates collected from Georgia and Texas. Phylogenetic and network analyses of these sequences combined with publicly available sequences of 40 members of the N. parvum - N. ribis species complex and the outgroup N. australe revealed that this fungus is a member of the species complex, but is genetically distinct from previously described species. We determined that leaf die-back of pecan is caused by a novel species, named herein N. caryigenum. 
  L3  - 
  JF  - Mycologia
  VL  - 
  IS  - 
  ER  -