Structure and expression of the maize gene encoding the phosphoenolpyruvate carboxylase isozyme involved in C sub(4) photosynthesis

The authors have determined the structure of the maize (Zea mays L. subsp. mays line B73) nuclear gene encoding the phosphoenolpyruvate (PEP) carboxylase isozyme involved in C sub(4) photosynthesis. The level of DNA sequence variation among different PEP carboxylase alleles is similar to the allelic...

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Bibliographic Details
Published in:Plant molecular biology 1989-01, Vol.12 (5), p.579-589
Main Authors: Hudspeth, R L, Grula, J W
Format: Article
Language:English
Subjects:
genes
photosynthesis
Online Access:Get full text
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Summary:The authors have determined the structure of the maize (Zea mays L. subsp. mays line B73) nuclear gene encoding the phosphoenolpyruvate (PEP) carboxylase isozyme involved in C sub(4) photosynthesis. The level of DNA sequence variation among different PEP carboxylase alleles is similar to the allelic variation observed for several other maize nuclear genes. The data suggest modern maize varieties have retained much of the genetic variation present in their ancestral forms. Finally, accumulation of transcripts encoding the PEP carboxylase isozyme involved in C sub(4) photosynthesis is quite high in several structures besides leaves, including inner leaf sheaths, tassels and husks. This indicates that expression of this gene is not leaf-specific and may not necessarily be coupled to the development of Kranz anatomy.
ISSN:0167-4412