Abstract
Historically, the ability to measure the velocity of phloem sap in small seedlings and plants has been technically challenging. The phloem tissues are delicate, oftenflow is blockedentirely if perturbed. Furthermore, the depth that phloem sieve tubes are located within the plant has hindered many techniques. Previously published methods have lacked the spatial and temporal resolution required for measurements in small seedlings, are usually laborious or are not suited to in vivo studies. Here we describe a rapid, high-throughput method using the fluorescent coumarin glucoside esculin as a probe to measure the phloem transport velocity in the roots of young Arabidopsis seedlings.
Published Version
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