The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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Neofusicoccum ribis Associated with Leaf Blight on Rubber (Hevea brasiliensis) in Peninsular Malaysia

  • Nyaka Ngobisa, A.I.C. (Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia) ;
  • Zainal Abidin, M.A. (Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia) ;
  • Wong, M.Y. (Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia) ;
  • Wan Noordin, M.W.D. (Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia)
  • Received : 2012.07.22
  • Accepted : 2012.10.09
  • Published : 2013.03.01
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Abstract

Hevea brasiliensis is a natural source of rubber and an important plantation tree species in Malaysia. Leaf blight disease caused by Fusicoccum substantially reduces the growth and performance of H. brasiliensis. The aim of this study was to use a combination of both morphological characteristics and molecular data to clarify the taxonomic position of the fungus associated with leaf blight disease. Fusicoccum species were isolated from infected leaves collected from plantations at 3 widely separated locations - Selangor, Perak, and Johor states - in Peninsular Malaysia in 2010. All the isolates were identified according to their conidial patterns and DNA sequences generated from internal transcribed spacers (ITS1 and ITS2), the 5.8S rRNA, and an unknown locus (BotF15) containing microsatellite repeats. Based on taxonomic and sequence data, Neofusicoccum ribis was identified as the main cause of leaf blight disease in H. brasiliensis in commercial plantations in Malaysia. A pathogenicity trial on detached leaves further confirmed that N. ribis causes leaf blight disease. N. ribis is an important leaf pathogen, and its detection in Malaysia has important implications for future planting of H. brasiliensis.

Keywords

References

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