Characterisation of pathogen causal of red root disease of tea plant at Sabah Tea Plantation

Chin Clament Fui Seung, . and Markus Atong, . and Wong Nyet Kui, . (2011) Characterisation of pathogen causal of red root disease of tea plant at Sabah Tea Plantation. [Proceedings Paper]

Sustainability of organic tea production at Sabah Tea Plantation is currently hampered by the presence of a root disease. Infected plants gradually showed wilt of above ground parts and rot in the underground roots. This study is aimed to characterised the pathogen causal of red root disease at Sabah Tea Plantation and to provide basic descriptions of its macro-and micromorphological features. A basidiomycete fungus was formed on several infected tea roots in field present in resupinate form annual yellow when fresh and gradually become cream to pale tan upon drying. Basidia and basidiospores were not seen. Hyphal system was present in pseudodimitic form lightly to heavily encrust with loosely attached small hyaline crystals that dissolve in 5 v/v KOH. Clamps connection was present at all septa together with yellowish variably branched skeletal-like hyphae. Cystidia present in sphaeropedunculate shape with a long stalk. On media the fungus grew rapidly with a mean growth rate of 0.42 cm/day. Rhizomorph structure was present in field and on artificial growing media.

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Abstract

Sustainability of organic tea production at Sabah Tea Plantation is currently hampered by the presence of a root disease. Infected plants gradually showed wilt of above ground parts and rot in the underground roots. This study is aimed to characterised the pathogen causal of red root disease at Sabah Tea Plantation and to provide basic descriptions of its macro-and micromorphological features. A basidiomycete fungus was formed on several infected tea roots in field present in resupinate form annual yellow when fresh and gradually become cream to pale tan upon drying. Basidia and basidiospores were not seen. Hyphal system was present in pseudodimitic form lightly to heavily encrust with loosely attached small hyaline crystals that dissolve in 5 v/v KOH. Clamps connection was present at all septa together with yellowish variably branched skeletal-like hyphae. Cystidia present in sphaeropedunculate shape with a long stalk. On media the fungus grew rapidly with a mean growth rate of 0.42 cm/day. Rhizomorph structure was present in field and on artificial growing media.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QR22 M3I61 2011 vol.2 Call Number.
AGROVOC Term:	Tea plant
AGROVOC Term:	Plantations
AGROVOC Term:	Isolation
AGROVOC Term:	Roots
AGROVOC Term:	In vitro
AGROVOC Term:	Disease symptoms
AGROVOC Term:	Gallic acid
AGROVOC Term:	Tannic acid
AGROVOC Term:	Pathogens
AGROVOC Term:	Plant diseases
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:15
URI:	http://webagris.upm.edu.my/id/eprint/12984

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