Viruses infecting cassava in Kenya

Research output: Contribution to journalReview articleResearchpeer review

Authors

  • H. K. Were
  • S. Winter
  • E. Maiss

Research Organisations

External Research Organisations

  • Kyushu University
  • Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures
View graph of relations

Details

Original languageEnglish
Pages (from-to)17-22
Number of pages6
JournalPlant disease
Volume88
Issue number1
Publication statusPublished - 2004

Abstract

A survey of cassava viruses was conducted in major cassava-growing regions of Kenya. A total of 185 leaf samples and 62 stem cuttings from plants with viral disease symptoms were collected and analyzed by biological, electron microscopy, enzyme-linked immunosorbent assay, and polymerase chain reaction. All samples from western Kenya had cassava begomoviruses (African cassava mosaic virus [ACMV], East African cassava mosaic virus [EACMV], and Uganda variant [EACMV-UG]) in either single or in mixed infection. However, all samples from the Coast region were infected with only EACMV, a begomovirus. In addition, 15 samples had mixed infections of EACMV and three other hitherto unidentified filamentous viruses. The viruses observed were 200, 500, 650, and 750 nm long, respectively. In addition to rod-shaped and some flexuous viruses, as seen in a crude sap preparation, pinwheels also were observed, indicating a possible association of some of the viruses with the Potyviridae family. The symptoms induced by these viruses in Nicotiana benthamiana were very severe and often caused about 50% death of the test plants. Back inoculation onto cassava resulted in 100% infections. This finding provides evidence that, other than begomoviruses that cause serious diseases of cassava in Africa, filamentous viruses also are present and, despite their limited distribution, they could reach local significance and, most probably, be as serious as begomoviruses. The implications of these findings are discussed and recommendations for future work suggested.

Keywords

    Carlavirus, CBSV, CMD, Incidence, SDS-PAGE

ASJC Scopus subject areas

Cite this

Viruses infecting cassava in Kenya. / Were, H. K.; Winter, S.; Maiss, E.
In: Plant disease, Vol. 88, No. 1, 2004, p. 17-22.

Research output: Contribution to journalReview articleResearchpeer review

Were, HK, Winter, S & Maiss, E 2004, 'Viruses infecting cassava in Kenya', Plant disease, vol. 88, no. 1, pp. 17-22. https://doi.org/10.1094/PDIS.2004.88.1.17
Were, H. K., Winter, S., & Maiss, E. (2004). Viruses infecting cassava in Kenya. Plant disease, 88(1), 17-22. https://doi.org/10.1094/PDIS.2004.88.1.17
Were HK, Winter S, Maiss E. Viruses infecting cassava in Kenya. Plant disease. 2004;88(1):17-22. doi: 10.1094/PDIS.2004.88.1.17
Were, H. K. ; Winter, S. ; Maiss, E. / Viruses infecting cassava in Kenya. In: Plant disease. 2004 ; Vol. 88, No. 1. pp. 17-22.
Download
@article{08790d0271684fbda6e0f7772b0424c4,
title = "Viruses infecting cassava in Kenya",
abstract = "A survey of cassava viruses was conducted in major cassava-growing regions of Kenya. A total of 185 leaf samples and 62 stem cuttings from plants with viral disease symptoms were collected and analyzed by biological, electron microscopy, enzyme-linked immunosorbent assay, and polymerase chain reaction. All samples from western Kenya had cassava begomoviruses (African cassava mosaic virus [ACMV], East African cassava mosaic virus [EACMV], and Uganda variant [EACMV-UG]) in either single or in mixed infection. However, all samples from the Coast region were infected with only EACMV, a begomovirus. In addition, 15 samples had mixed infections of EACMV and three other hitherto unidentified filamentous viruses. The viruses observed were 200, 500, 650, and 750 nm long, respectively. In addition to rod-shaped and some flexuous viruses, as seen in a crude sap preparation, pinwheels also were observed, indicating a possible association of some of the viruses with the Potyviridae family. The symptoms induced by these viruses in Nicotiana benthamiana were very severe and often caused about 50% death of the test plants. Back inoculation onto cassava resulted in 100% infections. This finding provides evidence that, other than begomoviruses that cause serious diseases of cassava in Africa, filamentous viruses also are present and, despite their limited distribution, they could reach local significance and, most probably, be as serious as begomoviruses. The implications of these findings are discussed and recommendations for future work suggested.",
keywords = "Carlavirus, CBSV, CMD, Incidence, SDS-PAGE",
author = "Were, {H. K.} and S. Winter and E. Maiss",
year = "2004",
doi = "10.1094/PDIS.2004.88.1.17",
language = "English",
volume = "88",
pages = "17--22",
journal = "Plant disease",
issn = "0191-2917",
publisher = "American Phytopathological Society",
number = "1",

}

Download

TY - JOUR

T1 - Viruses infecting cassava in Kenya

AU - Were, H. K.

AU - Winter, S.

AU - Maiss, E.

PY - 2004

Y1 - 2004

N2 - A survey of cassava viruses was conducted in major cassava-growing regions of Kenya. A total of 185 leaf samples and 62 stem cuttings from plants with viral disease symptoms were collected and analyzed by biological, electron microscopy, enzyme-linked immunosorbent assay, and polymerase chain reaction. All samples from western Kenya had cassava begomoviruses (African cassava mosaic virus [ACMV], East African cassava mosaic virus [EACMV], and Uganda variant [EACMV-UG]) in either single or in mixed infection. However, all samples from the Coast region were infected with only EACMV, a begomovirus. In addition, 15 samples had mixed infections of EACMV and three other hitherto unidentified filamentous viruses. The viruses observed were 200, 500, 650, and 750 nm long, respectively. In addition to rod-shaped and some flexuous viruses, as seen in a crude sap preparation, pinwheels also were observed, indicating a possible association of some of the viruses with the Potyviridae family. The symptoms induced by these viruses in Nicotiana benthamiana were very severe and often caused about 50% death of the test plants. Back inoculation onto cassava resulted in 100% infections. This finding provides evidence that, other than begomoviruses that cause serious diseases of cassava in Africa, filamentous viruses also are present and, despite their limited distribution, they could reach local significance and, most probably, be as serious as begomoviruses. The implications of these findings are discussed and recommendations for future work suggested.

AB - A survey of cassava viruses was conducted in major cassava-growing regions of Kenya. A total of 185 leaf samples and 62 stem cuttings from plants with viral disease symptoms were collected and analyzed by biological, electron microscopy, enzyme-linked immunosorbent assay, and polymerase chain reaction. All samples from western Kenya had cassava begomoviruses (African cassava mosaic virus [ACMV], East African cassava mosaic virus [EACMV], and Uganda variant [EACMV-UG]) in either single or in mixed infection. However, all samples from the Coast region were infected with only EACMV, a begomovirus. In addition, 15 samples had mixed infections of EACMV and three other hitherto unidentified filamentous viruses. The viruses observed were 200, 500, 650, and 750 nm long, respectively. In addition to rod-shaped and some flexuous viruses, as seen in a crude sap preparation, pinwheels also were observed, indicating a possible association of some of the viruses with the Potyviridae family. The symptoms induced by these viruses in Nicotiana benthamiana were very severe and often caused about 50% death of the test plants. Back inoculation onto cassava resulted in 100% infections. This finding provides evidence that, other than begomoviruses that cause serious diseases of cassava in Africa, filamentous viruses also are present and, despite their limited distribution, they could reach local significance and, most probably, be as serious as begomoviruses. The implications of these findings are discussed and recommendations for future work suggested.

KW - Carlavirus

KW - CBSV

KW - CMD

KW - Incidence

KW - SDS-PAGE

UR - http://www.scopus.com/inward/record.url?scp=1642377048&partnerID=8YFLogxK

U2 - 10.1094/PDIS.2004.88.1.17

DO - 10.1094/PDIS.2004.88.1.17

M3 - Review article

AN - SCOPUS:1642377048

VL - 88

SP - 17

EP - 22

JO - Plant disease

JF - Plant disease

SN - 0191-2917

IS - 1

ER -