ADVANTAGES OF POLYPLOID PLANTS IN CLIMATE CHANGE OR EXTREME HABITATS ACCORDING TO ITS DIPLOIDS – A REVIEW–

NESRIN ORCEN

Abstract


Polyploid organisms are those containing more than two paired sets of chromosomes. Polyploidy is occurs in many plants and some animal species but is particularly widespread in the angiosperms. Polyploidy has attract attention researchers for almost a century and today it well knows that polyploidy has had a role in the evolution of all angiosperms. Despite its widespread occurrence, the direct effect of polyploidy on evolutionary success of a species is still largely unclear. Over the years, many hypotheses have been proposed to put functionality into increasing content of a duplicated genome. These hypotheses include the fact that doubling of the genome provides significant advantages over a polyploid, and these advantages allow polypoids to develop in environments that challenge the diploid progenitors of polyploidies Genome doubling, or polyploidy, is a major factor accounting for duplicate genes found in most eukaryotic genomes. Polyploidy has considerable effects on duplicate gene expression, including silencing and up- or downregulation of one of the duplicated genes. Genome doubling confers distinct advantages to a polyploid and that these advantages allow polyploids to thrive in environments that pose challenges to the

Full Text:

PDF

Refbacks

  • There are currently no refbacks.