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Scientists at the Sainsbury Laboratory Cambridge University (SLCU) have discovered a new molecular signalling pathway, triggered when leaves are exposed to low humidity, that ensures plant roots keep growing towards water. A new study has found that when the leaves of a plant are exposed to dry air (low humidity), they send a shoot-to-root signal, using abscisic acid (ABA), to tell the roots to keep growing. This is a surprising finding as ABA is usually thought to be a growth inhibitor, not a growth promoter. ....

United Kingdom , Alexanderm Jones , Alexander Jone , Alexander Jones , Mathieu Grang , James Rowe , Rinukshi Wimalasekera , Kartika Shetty , Seanr Cutler , Marino Exposito Rodriguez , Martin Lenz , Jamesh Rowe , Nottingham Arabidopsis Stock Centre Nasc Ids , Sciences Research Council , Sainsbury Laboratory Cambridge University , Gatsby Charitable Foundation , Method Of Research , Nature Plants , Abscisic Acid Concentration , Uptake Sensor , Biological Sciences Research Council , Access Resources , Nottingham Arabidopsis Stock Centre ,