A revision of the species concept in Sarocladium, the causal agent of sheath-rot in rice and bamboo blight, based on biochemical and morphometric analyses |
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| Authors: | P D BRIDGE D L HAWKSWORTH D F KAVISHE P A FARNELL |
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| Institution: | CAB International Mycological Institute, Ferry Lane, Kew, Surrey TW9 3AF. UK |
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| Abstract: | Fifty strains of Sarocladium (11 dried specimens and 39 living cultures) were examined for variation in conidial size, utilization of several carbon sources, hydrolysis of several substrates, esterase isozymes after gel electrophoresis, and secondary metabolites after thin-layer chromatography. The results showed that there was insufficient justification to maintain the separation of the genus into the two species S. oryzae and S. attenuatum; S. attenuatum is, therefore, considered a synonym of S. oryzae. Strains isolated from outbreaks of bamboo blight in Bangladesh could be distinguished from strains isolated from rice in 12 countries by pigment production in culture; a strain isolated from bamboo leaf-litter in India was identical to the rice isolates in this respect. |
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