Morphological Characterization of <i>Corticium koleroga</i>, Cause of Thread Blight on Arabica Coffee

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur

doi:doi:10.11648/j.pst.20200402.12

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Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur

Published in Pharmaceutical Science and Technology (Volume 4, Issue 2)

Received: 3 November 2020 Accepted: 18 November 2020 Published: 22 December 2020

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Abstract

Coffee thread blight caused by Corticium koleroga is one of the fungal pathogens that cause severe damage to Coffea arabica in southwest Ethiopia. However, there are very few research findings on the features of the pathogen in Ethiopia. Therefore, the current work was designed with the objectives to characterize pathogen isolates and determine the pathogenicity of the Corticium koleroga isolates. For this purpose, diseased samples were collected from 11 districts of southwest Ethiopia during the 2017 cropping season. C. koleroga isolates were characterized using macroscopic and microscopic features. Eleven isolates of C. koleroga collected from southwest Ethiopia varied in their colony colour ranging from white to floral white, with circular to irregular form and filiform to entire in margin on PDA plates. Growth rate of the isolates was between 6 and 9 mm/day in diameter. Morphological variations in basidiospores length and basidial shape were also evident among the isolates. Average basidiospore size ranged from 10 to 13.75 x 3.75 to 5μ. All isolates were pathogenic to C. arabica (74110 susceptible variety), with significantly different (P<0.01) lesion size. The most aggressive isolate was Yayu isolate, followed by isolates from Andaracha and Mettu with average lesion size of 95.55, 94.49 and 93.29%, respectively. The current study revealed the identity of Corticium koleroga in southwest Ethiopia. Future research should be directed towards molecular characterization of the pathogen.

Published in	Pharmaceutical Science and Technology (Volume 4, Issue 2)
DOI	10.11648/j.pst.20200402.12
Page(s)	31-39
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Basidiospore, Isolate, Koleroga, Mycelium, Southwest Ethiopia

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Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. (2020). Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharmaceutical Science and Technology, 4(2), 31-39. https://doi.org/10.11648/j.pst.20200402.12

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ACS Style

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur. Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharm. Sci. Technol. 2020, 4(2), 31-39. doi: 10.11648/j.pst.20200402.12

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AMA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharm Sci Technol. 2020;4(2):31-39. doi: 10.11648/j.pst.20200402.12

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@article{10.11648/j.pst.20200402.12,
  author = {Nagassa Dechassa and Alemayehu Chala and Kifle Belachew and Elfinesh Shikur},
  title = {Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee},
  journal = {Pharmaceutical Science and Technology},
  volume = {4},
  number = {2},
  pages = {31-39},
  doi = {10.11648/j.pst.20200402.12},
  url = {https://doi.org/10.11648/j.pst.20200402.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.pst.20200402.12},
  abstract = {Coffee thread blight caused by Corticium koleroga is one of the fungal pathogens that cause severe damage to Coffea arabica in southwest Ethiopia. However, there are very few research findings on the features of the pathogen in Ethiopia. Therefore, the current work was designed with the objectives to characterize pathogen isolates and determine the pathogenicity of the Corticium koleroga isolates. For this purpose, diseased samples were collected from 11 districts of southwest Ethiopia during the 2017 cropping season. C. koleroga isolates were characterized using macroscopic and microscopic features. Eleven isolates of C. koleroga collected from southwest Ethiopia varied in their colony colour ranging from white to floral white, with circular to irregular form and filiform to entire in margin on PDA plates. Growth rate of the isolates was between 6 and 9 mm/day in diameter. Morphological variations in basidiospores length and basidial shape were also evident among the isolates. Average basidiospore size ranged from 10 to 13.75 x 3.75 to 5μ. All isolates were pathogenic to C. arabica (74110 susceptible variety), with significantly different (PCorticium koleroga in southwest Ethiopia. Future research should be directed towards molecular characterization of the pathogen.},
 year = {2020}
}

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TY - JOUR
T1 - Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee
AU - Nagassa Dechassa
AU - Alemayehu Chala
AU - Kifle Belachew
AU - Elfinesh Shikur
Y1 - 2020/12/22
PY - 2020
N1 - https://doi.org/10.11648/j.pst.20200402.12
DO - 10.11648/j.pst.20200402.12
T2 - Pharmaceutical Science and Technology
JF - Pharmaceutical Science and Technology
JO - Pharmaceutical Science and Technology
SP - 31
EP - 39
PB - Science Publishing Group
SN - 2640-4540
UR - https://doi.org/10.11648/j.pst.20200402.12
AB - Coffee thread blight caused by Corticium koleroga is one of the fungal pathogens that cause severe damage to Coffea arabica in southwest Ethiopia. However, there are very few research findings on the features of the pathogen in Ethiopia. Therefore, the current work was designed with the objectives to characterize pathogen isolates and determine the pathogenicity of the Corticium koleroga isolates. For this purpose, diseased samples were collected from 11 districts of southwest Ethiopia during the 2017 cropping season. C. koleroga isolates were characterized using macroscopic and microscopic features. Eleven isolates of C. koleroga collected from southwest Ethiopia varied in their colony colour ranging from white to floral white, with circular to irregular form and filiform to entire in margin on PDA plates. Growth rate of the isolates was between 6 and 9 mm/day in diameter. Morphological variations in basidiospores length and basidial shape were also evident among the isolates. Average basidiospore size ranged from 10 to 13.75 x 3.75 to 5μ. All isolates were pathogenic to C. arabica (74110 susceptible variety), with significantly different (PCorticium koleroga in southwest Ethiopia. Future research should be directed towards molecular characterization of the pathogen.
VL - 4
IS - 2
ER -

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Author Information

Nagassa Dechassa

Ethiopian Institute of Agricultural Research, Jimma Agricultural Research Centre, Jimma, Ethiopia
Alemayehu Chala

School of Plant and Horticultural Sciences, Hawassa University, Hawassa, Ethiopia
Kifle Belachew

Ethiopian Institute of Agricultural Research, Jimma Agricultural Research Centre, Jimma, Ethiopia
Elfinesh Shikur

School of Plant and Horticultural Sciences, Hawassa University, Hawassa, Ethiopia

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APA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. (2020). Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharmaceutical Science and Technology, 4(2), 31-39. https://doi.org/10.11648/j.pst.20200402.12

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ACS Style

Nagassa Dechassa; Alemayehu Chala; Kifle Belachew; Elfinesh Shikur. Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharm. Sci. Technol. 2020, 4(2), 31-39. doi: 10.11648/j.pst.20200402.12

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AMA Style

Nagassa Dechassa, Alemayehu Chala, Kifle Belachew, Elfinesh Shikur. Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee. Pharm Sci Technol. 2020;4(2):31-39. doi: 10.11648/j.pst.20200402.12

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@article{10.11648/j.pst.20200402.12,
  author = {Nagassa Dechassa and Alemayehu Chala and Kifle Belachew and Elfinesh Shikur},
  title = {Morphological Characterization of Corticium koleroga, Cause of Thread Blight on Arabica Coffee},
  journal = {Pharmaceutical Science and Technology},
  volume = {4},
  number = {2},
  pages = {31-39},
  doi = {10.11648/j.pst.20200402.12},
  url = {https://doi.org/10.11648/j.pst.20200402.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.pst.20200402.12},
  abstract = {Coffee thread blight caused by Corticium koleroga is one of the fungal pathogens that cause severe damage to Coffea arabica in southwest Ethiopia. However, there are very few research findings on the features of the pathogen in Ethiopia. Therefore, the current work was designed with the objectives to characterize pathogen isolates and determine the pathogenicity of the Corticium koleroga isolates. For this purpose, diseased samples were collected from 11 districts of southwest Ethiopia during the 2017 cropping season. C. koleroga isolates were characterized using macroscopic and microscopic features. Eleven isolates of C. koleroga collected from southwest Ethiopia varied in their colony colour ranging from white to floral white, with circular to irregular form and filiform to entire in margin on PDA plates. Growth rate of the isolates was between 6 and 9 mm/day in diameter. Morphological variations in basidiospores length and basidial shape were also evident among the isolates. Average basidiospore size ranged from 10 to 13.75 x 3.75 to 5μ. All isolates were pathogenic to C. arabica (74110 susceptible variety), with significantly different (PCorticium koleroga in southwest Ethiopia. Future research should be directed towards molecular characterization of the pathogen.},
 year = {2020}
}

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