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Phylogenetic analysis of the genus Sorghum based on combined sequence data from cpDNA regions and ITS generate well-supported trees with two major lineages

Ng'uni, Dickson and Geleta, Mulatu and Fatih, Moneim and Bryngelsson, Tomas (2010). Phylogenetic analysis of the genus Sorghum based on combined sequence data from cpDNA regions and ITS generate well-supported trees with two major lineages. Annals of botany. 105:3, 471-480
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Abstract

Background and Aims: Wild Sorghum species provide novel traits for both biotic and abiotic stress resistance and yield for the improvement of cultivated sorghum. A better understanding of the phylogeny in the genus Sorghum will enhance use of the valuable agronomic traits found in wild sorghum. Methods: Four regions of chloroplast DNA (cpDNA; psbZ-trnG, trnY-trnD, trnY-psbM and trnT-trnL) and the internal transcribed spacer (ITS) of nuclear ribosomal DNA were used to analyse the phylogeny of sorghum based on maximum-parsimony analyses. Key Results: Parsimony analyses of the ITS and cpDNA regions as separate or combined sequence datasets formed trees with strong bootstrap support with two lineages: the Eu-sorghum species S. laxiflorum and S. macrospermum in one and Stiposorghum and Para-sorghum in the other. Within Eu-sorghum, S. bicolor-3, -11 and -14 originating from southern Africa form a distinct clade. S. bicolor-2, originally from Yemen, is distantly related to other S. bicolor accessions. Conclusions: Eu-sorghum species are more closely related to S. macrospermum and S. laxiflorum than to any other Australian wild Sorghum species. S. macrospermum and S. laxiflorum are so closely related that it is inappropriate to classify them in separate sections. S. almum is closely associated with S. bicolor, suggesting that the latter is the maternal parent of the former given that cpDNA is maternally inherited in angiosperms. S. bicolor-3, -11 and -14, from southern Africa, are closely related to each other but distantly related to S. bicolor-2.

Authors/Creators:Ng'uni, Dickson and Geleta, Mulatu and Fatih, Moneim and Bryngelsson, Tomas
Title:Phylogenetic analysis of the genus Sorghum based on combined sequence data from cpDNA regions and ITS generate well-supported trees with two major lineages
Series/Journal:Annals of botany (1095-8290)
Year of publishing :7 January 2010
Volume:105
Number:3
Page range:471-480
Publisher:Oxford University Press
ISSN:1095-8290
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Agronomy
Obsolete subject words > NATURAL SCIENCES > Biology > Cell and molecular biology > Genetics
Keywords:molecular phylogeny, Sorghum Moench, Eu-sorghum, Zea mays, non-coding regions, cpDNA, ITS
URN:NBN:urn:nbn:se:slu:epsilon-4-376
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-4-376
ID Code:4689
Department:(LTJ, LTV) > Plant Breeding and Biotechnology (until 121231)
Deposited By: Dickson Ng'uni
Deposited On:04 Feb 2011 00:00
Metadata Last Modified:02 Dec 2014 10:32

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