Study Reveals New Regulator for Plant Hormone Signaling
June 5, 2013| |
Scientists at Dartmouth College in the U.S. investigated the molecular mechanisms involved in the plant's ability to recognize and respond to hormones. Anti-aging hormones such as cytokinins are important in controlling plant growth and development, including stimulating yield, greening, metabolism, and cell division.
Hyo Jung Kim and colleagues identified a family of proteins called KISS ME DEADLY (KMD) as a new regulator of cytokinin signaling. To regulate plant growth, plants must recognize cytokinins and convert this information into changes in gene expression. The KMDs target a key group of cytokinin-regulated transcription factors for destruction, then regulates the gene expression changes that occur as reaction to cytokinin presence. When the KMD concentration increases, there will be reduced cytokinin response (or less plant growth), and vice-versa.
The results of the study provides better understanding of cytokinins and that KMD could help improve agricultural productivity.
Read the research paper at http://www.pnas.org/content/early/2013/05/28/1300403110.abstract.
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