alexa Ribosomal RNA genes in plants: variability in copy number and in the intergenic spacer.
Environmental Sciences

Environmental Sciences

Journal of Biodiversity, Bioprospecting and Development

Author(s): Rogers SO, Bendich AJ, Rogers SO, Bendich AJ

Abstract Share this page

Abstract Ribosomal RNA genes in plants are highly variable both in copy number and in intergenic spacer (IGS) length. This variability exists not only between distantly related species, but among members of the same genus and also among members of the same population of a single species. Analysis of inheritance indicates that copy number change is rapid, occurring even among somatic cells of individual plants, and that up to 90\% or more of the gene copies are superfluous. Subrepetitive sequences within the IGS appear to be changing rapidly as well. They are not only variable in sequence from one species to the next, but can vary in number between neighboring gene repeats on the chromosome. In all species examined in detail they are located in the same region of the IGS and contain sequences that can be folded into stem-loop structures flanked by a pyrimidine-rich region. It has been suggested that these subrepeats function in transcriptional enhancement, termination or processing, or in recombination events generating the high multiplicity of ribosomal genes. This article was published in Plant Mol Biol and referenced in Journal of Biodiversity, Bioprospecting and Development

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

1-702-714-7001Extn: 9037

Business & Management Journals


1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

1-702-714-7001 Extn: 9042

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version