Scientists have identified a particular gene for the first time that regulates the "alternation of generations" trait in land plants. They found this gene, now known as KNOX2, when studying moss. This gene causes the diploid generation to develop as a haploid generation which causes the phenomenon alternation of generations. The team's studies greatly support a theory put forward in the last century proposing that the "complex diploid body was a novel evolutionary invention." These new findings may prove very useful as mutations in the gene cause plants to skip a generation. If scientists could harness a gene that skips the gene scrambling haploid generation it may prove very useful in agriculture. With this new discovery they could genetically engineer plants with desirable characteristics to skip the haploid generation and essentially create clones of themselves.
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This article talks about the gene that regulates alternation of generations in land plants which is an adaptation we discussed in class and was detailed in the textbook. Furthermore, the gene was found in moss, a bryophyte, one of the first land plants, which we also discussed in class and was detailed in the textbook.
Article Information
URL: http://www.sciencedaily.com/releases/2013/03/130301123314.htm
Author: Monash University
Date of Publication: February 28, 2013
Since all plants already have alternation of generation, is the sole purpose of the discovery of this gene to investigate evolutionary past?
ReplyDeleteWhat is the purpose of trying to genetically engineer plants that skip the haploid generation and make clones of themselves?
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