News International Sugar Journal

Root growth rates determined by interactions between two hormones [Registered]

On a cellular level, as the tips of a plant’s roots expand downward, they must coordinate two different, but related, balancing acts. First between proliferation and strategic inactivation of the stem cells that make up the root’s tip; the strategic inactivation, called quiescence, helps maintain the stem cell niche under stress conditions. Secondly, between continued stem cell proliferation and the differentiation of these stem cells into elongated, mature cells. Researchers at the Carnegie Institution for Science, namely Juthamas Chaiwanon and Zhiyong Wang, report the mechanisms that control the balance between these aspects–stem cell proliferation, strategic inactivation, and differentiation into mature…

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