Article Abstract:
The characterization of mutator system in Maize reveal that the several different types of Mu transposons constitute the mutator lines of Maize. The mutator regulatory element occurs in a high copy number and causes the inheritance of the mutator activity in non-Mendelian way. The MuDR-1, a regulator of the Mutator system, is capable of replacing the standard non-Mendelian Mutator activity, as it is associated with the methylation of the Mu transposon termini.
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Article Abstract:
Maize mutant genes controlling shoot stage-transition that prolong basal segment characteristics into the distal segments interact with early-flowering maize variants that abbreviate the juvenile characteristics of vegetative segments to produce a great variety of phenotypes, including monstrous types. This observation can be used to explain macroevolution in terms of heterochrony and without having to invoke changes at the deoxyribonucleic acid level.
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Article Abstract:
A study of liguleless2-reference (lg2-R) mutant plants establishes the key role it plays in defining the blade-sheath boundary in maize leaves. The mutants shows signs of being affected even before the ligule and auricle formation. LG2 mRNA accumulation precedes the accumulation of liguleless1-reference. The phenotype of lg2-R is cell-nonautonomous.
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