'Speechless' and 'Mute' help break the silence of the leaves

Researchers have discovered two genes that guide land plants to develop microscopic pores that they can open and close as if each pore was a tiny mouth. Plants wouldn't have been able to move from water to land 400 million years ago if they hadn't evolved this ability, which protects them from losing too much moisture.

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<p><a href="http://www.physorg.com/news85853644.html">'Speechless' and 'Mute' help break the silence of the leaves</a></p> <p>Researchers have discovered two genes that guide land plants to develop microscopic pores that they can open and close as if each pore was a tiny mouth. Plants wouldn't have been able to move from water to land 400 million years ago if they hadn't evolved this ability, which protects them from losing too much moisture.</p>