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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Root rot pathogens of Cinnamomum cassia in Vietnam
Plant Pathology, Volume 71, No. 9, Year 2022
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Description
A study was conducted to determine the pathogens causing root rot, wilt and dieback disease of Cinnamomum cassia (Chinese cinnamon or cassia) in Vietnam, in nurseries and plantations in the Yen Bai, Quang Ninh, Thanh Hoa and Quang Nam provinces, and streams in the Yen Bai province. Pathogens were identified using morphology and internal transcribed spacer (ITS) sequence analysis. The 204 isolates obtained included 125 Phytophthora isolates and 79 from other oomycete genera. There were 112 isolates of P. cinnamomi, four P. heveae, two P. virginiana, three P. multibullata and four P. × vanyenensis. The pathogenicity and virulence of 16 P. cinnamomi, two P. heveae, two P. multibullata and four P. × vanyenensis isolates were assessed using lesion size after under-bark inoculation of C. cassia stems, and root damage following inoculation of 4-month-old C. cassia seedlings. The most virulent isolate from both assessments was a P. cinnamomi from the Quang Nam plantation. Isolates of P. cinnamomi showed a wide range of virulence, with isolates from healthy trees or seedlings showing the lowest virulence. Isolates of P. × vanyenensis, P. multibullata and P. heveae showed moderate or low pathogenicity. This study showed that although P. cinnamomi is the most common pathogen associated with dieback disease in Vietnamese C. cassia plantations, other Phytophthora species may also cause this disease. Knowledge of the presence of these soil- and waterborne pathogens will encourage improved soil and water hygiene in nurseries and implement measures to prevent the spread of the pathogens in plantations. © 2022 The Authors. Plant Pathology published by John Wiley & Sons Ltd on behalf of British Society for Plant Pathology.
Authors & Co-Authors
Dang, Quynh N.
Australia, Perth
Murdoch University
Viet Nam, Hanoi
Vietnamese Academy of Forest Sciences
Burgess, Treena Isobel
Australia, Perth
Murdoch University
McComb, Jen A.
Australia, Perth
Murdoch University
Pham, Thu Q.
Viet Nam, Hanoi
Vietnamese Academy of Forest Sciences
Le, Binh V.
Viet Nam, Hanoi
Vietnamese Academy of Forest Sciences
Hardy, Giles E.St J.
Australia, Perth
Murdoch University
Statistics
Citations: 1
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1111/ppa.13617
ISSN:
00320862
Research Areas
Environmental