Abstract
The Bioindicative Role of Enzyme Polymorphism of Seven Enzyme Systems as Reaction on High Cadmium Ions Concentration in Maize ( Zea Mays L.) Effect of different concentrations of cadmium ions (0, 15, 60, 240 and 960 μmol dm -3 in full Hoagland solutions) on enzyme polymorphism of seven enzymes - acid phosphatase (ACP), alcohol dehydrogenase (ADH), isocitrate dehydrogenase (IDH), malate dehydrogenase (MDH), 6-phosphogluconate dehydrogenase (PGD), phosphoglucoisomerase (PGI) and phosphoglucomutase (PGM) and their fifteen polymorphic loci - in coleoptiles, leaf blades and in the central parts of primary root systems of 14 days old seedlings in two self-pollinated maize lines and their single-cross was studied. Analyses of enzyme polymorphism showed that the biological material was homogeneous, self-pollinated lines had homozygous constitution in each analysed locus and hybrid had three loci ( Acp1: 2/4, Idh2: 4/6 and Pgd1: 2/3.8 ) with heterozygous constitution. Ions of cadmium negatively influenced seedling growth and development, high cadmium concentration (960 μmol dm -3 ) was toxic and stopped further growth and development of maize seedlings after five days of cultivation. Enzyme fingerprint analysis of these fifteen polymorphic loci from selected enzymes supported their genotypic, organ and ontogenetic stability under high doses of cadmium ions. According to our results this group of enzymes in these polymorphic loci did not express changes in polymorphism after treatment with cadmium ions and thus cannot play the bioindicative role in this respect.
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Claims 6
Claim · model-written summary
Lines were homozygous at each analysed locus.
Not reportedTaxon
Verbatim
e0“self-pollinated lines had homozygous constitution in each analysed locus”
Claim · model-written summary
Hybrid had three heterozygous loci.
Not reportedTaxon
Verbatim
e0“hybrid had three loci ( Acp1: 2/4, Idh2: 4/6 and Pgd1: 2/3.8 ) with heterozygous constitution”
Claim · model-written summary
Cadmium negatively influenced seedling growth and development.
Not reportedTaxonComparator
Verbatim
e0“Ions of cadmium negatively influenced seedling growth and development”
Claim · model-written summary
High cadmium stopped maize seedling growth and development after five days.
- Treatment
- high cadmium concentration (960 μmol dm -3 )e0
- Outcome
- further growth and developmente0
- Direction
- stoppede0
- Qualifier
- after five days of cultivatione0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high cadmium concentration (960 μmol dm -3 ) was toxic and stopped further growth and development of maize seedlings after five days of cultivation”
Claim · model-written summary
Fifteen loci showed genotypic, organ and ontogenetic stability under cadmium.
- Treatment
- high doses of cadmium ionse0
- Gene
- fifteen polymorphic locie0
- Outcome
- genotypic, organ and ontogenetic stabilitye0
Not reportedTaxon
Verbatim
e0“these fifteen polymorphic loci from selected enzymes supported their genotypic, organ and ontogenetic stability under high doses of cadmium ions”
Claim · model-written summary
Enzyme polymorphism did not change after cadmium treatment and was not bioindicative.
- Treatment
- cadmium ionse0
- Gene
- this group of enzymese0
- Outcome
- polymorphisme0
- Direction
- did not express changese0
Not reportedTaxonComparator
Verbatim
e0“this group of enzymes in these polymorphic loci did not express changes in polymorphism after treatment with cadmium ions and thus cannot play the bioindicative role”
The same questions in other papers
cadmium atom · growth · Zea mays (maize)Results differ
84 papers in the same direction as this paper · 11 in the opposite direction
- negative
- positive
- positive
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