TY - JOUR
T1 - Ceratocystis omanensis, a new species from diseased mango trees in Oman
AU - Al-Subhi, Ali M.
AU - Al-Adawi, Ali O.
AU - Van Wyk, Marelize
AU - Deadman, Michael L.
AU - Wingfield, Michael J.
N1 - Funding Information:
We are grateful to the Sultan Qaboos University, and Ministry of Agriculture and Fisheries, Sultanate of Oman for providing funds to support this study. We also acknowledge the University of Pretoria and the National Research Foundation (NRF) South Africa for financial support. We are grateful to the Directorate General of Agriculture and Veterinary Services, Royal Court Affairs, Sultanate of Oman for assistance in the collection of C. omanensis isolates and we thank Hugh Glen for suggesting a name for the fungus and providing a Latin description for it.
PY - 2006/2
Y1 - 2006/2
N2 - Mango (Mangifera indica) sudden decline is an important disease in Oman, which is closely associated with infections by Ceratocystis fimbriata and Lasiodiplodia theobromae. Another Ceratocystis species has also been found associated with symptoms on diseased trees. In this study, we identify that Ceratocystis based on morphology and DNA sequences. Morphological comparisons showed that the fungus from dying mango trees in Oman is similar to C. moniliformis. Both fungi have distinct hat-shaped ascospores, disc-shaped plates at the bases of the ascomatal necks and spines on the ascomatal bases. However, comparison of DNA sequences for ITS1-2, the 5.8S RNA gene, the β-tubulin gene, and Transcription Elongation Factor (EF1-α) gene, confirmed that the fungus from Oman is distinct from C. moniliformis and other related species. Phylogenetically, this fungus formed one of four strongly supported sub-clades. The other sub-clades included isolates of C. bhutanensis, C. moniliformis and C. moniliformopsis, respectively. Based on morphological characteristics and differences in DNA sequences for three gene regions, we conclude that the Ceratocystis sp. from wounds on mango in Oman is a new species, for which we provide the name Ceratocystis omanensis sp. nov.
AB - Mango (Mangifera indica) sudden decline is an important disease in Oman, which is closely associated with infections by Ceratocystis fimbriata and Lasiodiplodia theobromae. Another Ceratocystis species has also been found associated with symptoms on diseased trees. In this study, we identify that Ceratocystis based on morphology and DNA sequences. Morphological comparisons showed that the fungus from dying mango trees in Oman is similar to C. moniliformis. Both fungi have distinct hat-shaped ascospores, disc-shaped plates at the bases of the ascomatal necks and spines on the ascomatal bases. However, comparison of DNA sequences for ITS1-2, the 5.8S RNA gene, the β-tubulin gene, and Transcription Elongation Factor (EF1-α) gene, confirmed that the fungus from Oman is distinct from C. moniliformis and other related species. Phylogenetically, this fungus formed one of four strongly supported sub-clades. The other sub-clades included isolates of C. bhutanensis, C. moniliformis and C. moniliformopsis, respectively. Based on morphological characteristics and differences in DNA sequences for three gene regions, we conclude that the Ceratocystis sp. from wounds on mango in Oman is a new species, for which we provide the name Ceratocystis omanensis sp. nov.
KW - Cryphalus spp. (Coleoptera)
KW - Fungal phylogenetics
KW - Mango decline
KW - Ophiostomatoid fungi
KW - Tree diseases
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U2 - 10.1016/j.mycres.2005.08.007
DO - 10.1016/j.mycres.2005.08.007
M3 - Article
C2 - 16388939
AN - SCOPUS:33646349012
SN - 0953-7562
VL - 110
SP - 237
EP - 245
JO - Mycological Research
JF - Mycological Research
IS - 2
ER -