Ribosomal DNA polymorphism and its association with geographical and climatic variables in 27 wild barley populations from Jordan

Shailendra Sharma; Alex Beharav; Harindra Singh Balyan; Eviatar Nevo; Pushpendra Kumar Gupta

doi:10.1016/j.plantsci.2003.10.013

Ribosomal DNA polymorphism and its association with geographical and climatic variables in 27 wild barley populations from Jordan

Shailendra Sharma, Alex Beharav, Harindra Singh Balyan, Eviatar Nevo, Pushpendra Kumar Gupta

Department of Evolutionary and Environmental Biology

Research output: Contribution to journal › Article › peer-review

Abstract

Ribosomal DNA (rDNA) repeat unit length polymorphism was examined in 285 accessions of wild barley, Hordeum spontaneum C. Koch, which were collected from 27 locations across Jordan. As many as 19 spacer length variants (slvs) or rDNA alleles were available, which formed 70 slv phenotypes. The two missing alleles (098, 099) of the series (097, 100-118) and one additional allele 119 were also discovered in the present study thus raising the number of ribosomal slvs in barley to 24. Relatively more frequent rDNA alleles were analyzed in detail, and it was shown that they occurred non-randomly at locations with different environmental factors (annual rainfall, highest and lowest temperatures, altitude, longitude, latitude) and exhibited association with specific environments. Ecogeographical factors, rather than geographical factors per se, seem to affect the distribution of rDNA alleles. The present study thus demonstrates that rDNA repeat unit length polymorphism in some cases can be adaptive in nature.

Original language	English
Pages (from-to)	467-477
Number of pages	11
Journal	Plant Science
Volume	166
Issue number	2
DOIs	https://doi.org/10.1016/j.plantsci.2003.10.013
State	Published - Feb 2004

Bibliographical note

Funding Information:
Thanks are due to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for financial assistance to PKG and to the Israel Disount Chair of Evolutionary Biology and the Ancell-Teicher Research Foundation for Genetics and Molecular Evolution for financial assistance to EN.

Keywords

Adaptation
Hordeum spontaneum
Intergenic spacer
Spacer length variant (slv)
rDNA

ASJC Scopus subject areas

Genetics
Agronomy and Crop Science
Plant Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.plantsci.2003.10.013

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title = "Ribosomal DNA polymorphism and its association with geographical and climatic variables in 27 wild barley populations from Jordan",

abstract = "Ribosomal DNA (rDNA) repeat unit length polymorphism was examined in 285 accessions of wild barley, Hordeum spontaneum C. Koch, which were collected from 27 locations across Jordan. As many as 19 spacer length variants (slvs) or rDNA alleles were available, which formed 70 slv phenotypes. The two missing alleles (098, 099) of the series (097, 100-118) and one additional allele 119 were also discovered in the present study thus raising the number of ribosomal slvs in barley to 24. Relatively more frequent rDNA alleles were analyzed in detail, and it was shown that they occurred non-randomly at locations with different environmental factors (annual rainfall, highest and lowest temperatures, altitude, longitude, latitude) and exhibited association with specific environments. Ecogeographical factors, rather than geographical factors per se, seem to affect the distribution of rDNA alleles. The present study thus demonstrates that rDNA repeat unit length polymorphism in some cases can be adaptive in nature.",

keywords = "Adaptation, Hordeum spontaneum, Intergenic spacer, Spacer length variant (slv), rDNA",

author = "Shailendra Sharma and Alex Beharav and Balyan, {Harindra Singh} and Eviatar Nevo and Gupta, {Pushpendra Kumar}",

note = "Funding Information: Thanks are due to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for financial assistance to PKG and to the Israel Disount Chair of Evolutionary Biology and the Ancell-Teicher Research Foundation for Genetics and Molecular Evolution for financial assistance to EN. ",

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doi = "10.1016/j.plantsci.2003.10.013",

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AU - Balyan, Harindra Singh

AU - Nevo, Eviatar

AU - Gupta, Pushpendra Kumar

N1 - Funding Information: Thanks are due to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for financial assistance to PKG and to the Israel Disount Chair of Evolutionary Biology and the Ancell-Teicher Research Foundation for Genetics and Molecular Evolution for financial assistance to EN.

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N2 - Ribosomal DNA (rDNA) repeat unit length polymorphism was examined in 285 accessions of wild barley, Hordeum spontaneum C. Koch, which were collected from 27 locations across Jordan. As many as 19 spacer length variants (slvs) or rDNA alleles were available, which formed 70 slv phenotypes. The two missing alleles (098, 099) of the series (097, 100-118) and one additional allele 119 were also discovered in the present study thus raising the number of ribosomal slvs in barley to 24. Relatively more frequent rDNA alleles were analyzed in detail, and it was shown that they occurred non-randomly at locations with different environmental factors (annual rainfall, highest and lowest temperatures, altitude, longitude, latitude) and exhibited association with specific environments. Ecogeographical factors, rather than geographical factors per se, seem to affect the distribution of rDNA alleles. The present study thus demonstrates that rDNA repeat unit length polymorphism in some cases can be adaptive in nature.

AB - Ribosomal DNA (rDNA) repeat unit length polymorphism was examined in 285 accessions of wild barley, Hordeum spontaneum C. Koch, which were collected from 27 locations across Jordan. As many as 19 spacer length variants (slvs) or rDNA alleles were available, which formed 70 slv phenotypes. The two missing alleles (098, 099) of the series (097, 100-118) and one additional allele 119 were also discovered in the present study thus raising the number of ribosomal slvs in barley to 24. Relatively more frequent rDNA alleles were analyzed in detail, and it was shown that they occurred non-randomly at locations with different environmental factors (annual rainfall, highest and lowest temperatures, altitude, longitude, latitude) and exhibited association with specific environments. Ecogeographical factors, rather than geographical factors per se, seem to affect the distribution of rDNA alleles. The present study thus demonstrates that rDNA repeat unit length polymorphism in some cases can be adaptive in nature.

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KW - Intergenic spacer

KW - Spacer length variant (slv)

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Ribosomal DNA polymorphism and its association with geographical and climatic variables in 27 wild barley populations from Jordan

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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