Elucidation of molecular phylogeny of Rigidoporus microporus: a white root rot disease fungus of rubber (Hevea brasiliensis) in Malaysia

Siti Izera I., . and Khairulmazmi A., . and Mohd Farid A., . and Ahmed O. H., . and Andrew B., . and Wong M. Y., . Elucidation of molecular phylogeny of Rigidoporus microporus: a white root rot disease fungus of rubber (Hevea brasiliensis) in Malaysia. pp. 274-289. ISSN 0128-1283

White root rot (WRR) disease which is caused by Rigidoporus microporus is a major agricultural disease. The disease affects tropical fruits forest trees ornamental trees as well as rubber (Hevea brasiliensis) trees. Although WRR causes significant economic losses to planters there is no effective method to control this disease. The understanding on the population genetics of R. microporus isolates could mitigate WRR disease in plant management. Therefore the objective of this work was to elucidate molecular phylogeny of R. microporus isolated from rubber trees. Twenty seven R. microporus isolates were characterised using internal transcribed spacer (ITS) Beta-tubulin (-tubulin) and translation elongation factor- (tef1-) sequences data. Phylogenetic tree analyses of R. microporus isolates were divided into two major groups; the Asian and African groups. However there was no distinct geographical structuring in the Asian group suggesting gene flow happened among the populations. Somatic Incompatibility (SI) test and Inter Simple Sequence Repeat (ISSR) marker revealed that the R. microporus in the rubber plantations partially clustered based on geographical regions. The genetic diversity of R. microporus by ISSR revealed four major groups. The findings of the present study provide a baseline data for breeders and plant pathologists to enable them strategise effective and sustainable WRR disease management.

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Abstract

White root rot (WRR) disease which is caused by Rigidoporus microporus is a major agricultural disease. The disease affects tropical fruits forest trees ornamental trees as well as rubber (Hevea brasiliensis) trees. Although WRR causes significant economic losses to planters there is no effective method to control this disease. The understanding on the population genetics of R. microporus isolates could mitigate WRR disease in plant management. Therefore the objective of this work was to elucidate molecular phylogeny of R. microporus isolated from rubber trees. Twenty seven R. microporus isolates were characterised using internal transcribed spacer (ITS) Beta-tubulin (-tubulin) and translation elongation factor- (tef1-) sequences data. Phylogenetic tree analyses of R. microporus isolates were divided into two major groups; the Asian and African groups. However there was no distinct geographical structuring in the Asian group suggesting gene flow happened among the populations. Somatic Incompatibility (SI) test and Inter Simple Sequence Repeat (ISSR) marker revealed that the R. microporus in the rubber plantations partially clustered based on geographical regions. The genetic diversity of R. microporus by ISSR revealed four major groups. The findings of the present study provide a baseline data for breeders and plant pathologists to enable them strategise effective and sustainable WRR disease management.

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Item Type:	Article
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Integrated disease management
AGROVOC Term:	Fungal diseases
AGROVOC Term:	Polymerase chain reaction
AGROVOC Term:	White rot (wood)
AGROVOC Term:	Venturia (fungus)
AGROVOC Term:	Rigidoporus
AGROVOC Term:	DNA
AGROVOC Term:	Gene sequence
AGROVOC Term:	Genetic diversity within species
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10040

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