Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1996 Jan;4(1):15-23.
doi: 10.1007/BF02254939.

Molecular analysis of the structure of the maize B-chromosome

E A Stark  1 , I Connerton, S T Bennett, S R Barnes, J S Parker, J W Forster
Affiliations

Molecular analysis of the structure of the maize B-chromosome

E A Stark et al. Chromosome Res. 1996 Jan.

Abstract

The overall composition of the maize B is similar to that of the standard chromosome complement (A-chromosomes). This has been demonstrated by the use of several methods including: (a) genomic in situ hybridization (GISH), (b) analysis of highly repetitive sequences by the comparison of restriction digests of 0B and +B DNA and (c) the characterization of middle-repetitive cloned sequences. By the use of the technique of random amplification of polymorphic DNA-polymerase chain reaction, we have identified a B-specific repetitive sequence family. Sequence analysis of the B-specific clone reveals a relationship to the PREM-1 family of maize retroelements, which are preferentially transcribed in pollen. These results suggest an internal origin of the B-chromosome from within the maize genome, but demonstrate also that specific sequences can evolve by rapid processes of genomic turnover. Models for the origin of the maize B are discussed in the context of the present data.

PubMed Disclaimer

References

    1. Nature. 1986 Aug 14-20;322(6080):652-6 - PubMed
    1. Theor Appl Genet. 1985 Jun;70(3):234-9 - PubMed
    1. Nucleic Acids Res. 1990 Nov 25;18(22):6531-5 - PubMed
    1. Genetics. 1993 Oct;135(2):589-97 - PubMed
    1. Genetics. 1978 Oct;90(2):331-8 - PubMed

Publication types

Associated data