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Development of phosphogluco‐isomerase isozymes in perennial ryegrass (Lolium perenne)
Author(s) -
Jones Thomas W. A.
Publication year - 1984
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1984.tb04565.x
Subject(s) - lolium perenne , isozyme , perennial plant , lolium , biology , isomerase , starch , biochemistry , enzyme , botany , poaceae
The development of isozymes of phosphogluco‐isomerase (PGI; D‐glucose‐6‐phosphate ketol isomerase EC 5.3.1.9.) in perennial ryegrasses was followed from dry seed through to leaf senescence using starch gel electrophoretic separations. Root isozymes were also examined. Two forms of the enzyme were found, one (PGI/2) being present in all tissues and at all stages of the life cycle. The other (PGI/1) had two zones of activity, one of which was detected only in light‐exposed tissue. Normal development of this form could be inhibited by growing seedlings on distilled water. Some alleles of PGI/2 not previously reported for ryegrasses are also described.