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Heterogeneity in NTS of rDNA in localized populations of Neurospora

Adhvaryu, Keyur K and Maheshwari, Ramesh (2002) Heterogeneity in NTS of rDNA in localized populations of Neurospora. In: Current Science, 82 (8). pp. 1015-1020.

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Abstract

Neurospora, a filamentous ascomycete, occurs in tropical climate. We have examined the relationships that exist among wild isolates in local populations of Neurospora by using PCR–RFLP to analyse the Non Transcribed Spacer (NTS) of the rDNA. The size of the NTS was found to be polymorphic. Phylogenetic trees constructed using this data support the hypothesis that mating groups represent monophyletic lineages. Specifically, the results suggest monophyly for N. tetrasperma and N. sitophila, a close relationship between the pseudohomothallic species N. tetrrasperma and true heterothallics, and the placement of N. discreta as the most distant among all species. The yellow ecotype of N. intermedia has been assigned a putative phylogenetic position for the first time. Surprisingly, these yellow isolates, considered to be an ecotype of N. intermedia, appear to represent a separate lineage, distinct from a larger N. crassa/N. intermedia clade.

Item Type: Journal Article
Additional Information: Copyright belongs to this article is Indian Academy of Sciences.
Department/Centre: Division of Biological Sciences > Biochemistry
Date Deposited: 24 Oct 2007
Last Modified: 29 Feb 2012 07:09
URI: http://eprints.iisc.ernet.in/id/eprint/12307

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