Duplicated cytosolic malate dehydrogenase genes in Zea mays.

Proceedings of the National Academy of Sciences of the United States of America ·Vol. 77 ·No. 8 ·1980-08-00 ·Pages 4866-70

McMillin DE, Scandalios JG

Abstract

Six inbred lines of Zea mays expressing different soluble (cytosolic) malate dehydrogenase (sMDH) zymogram phenotypes were analyzed genetically. sMDH was found to be coded for by unlinked duplicated loci in four of these inbred lines. The remaining two lines were found not to possess these duplicated loci. Furthermore, the duplicated loci, sMdh1 and sMdh2, have been found to be located on different chromosomes: sMdh1 on chromosome 1L linked to Amp1, and sMdh2 on chromosome 5S linked to Cat1 and Amp3. The importance of finding sMDH encoded by duplicated loci is discussed in relation to the role of chromosomal rearrangements, the relationship between the cytoplasmic and mitochondrial enzymes, and the evolution of Z. mays.

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

McMillin D E

Department of Genetics, North Carolina State University, Raleigh, North Carolina 27650.

Scandalios J G

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17 references, click to expand

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Article Info

Journal

Proceedings of the National Academy of Sciences of the United States of America

Abbr.

Proc Natl Acad Sci U S A

ISSN

0027-8424

DOI

10.1073/pnas.77.8.4866

Published

1980-08-00

Pages

4866-70

Language

English

Region

United States

NLM ID

7505876

PMCID

PMC349949

External Links

PubMed source DOI: 10.1073/pnas.77.8.4866 PMC Full Text View journal details

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