Resistant xylem from roots to peduncles sustains reproductive water supply after drought-induced cavitation of wheat leaves

Harrison Day BL and Brodribb TJ

Annals of Botany


Many annual grasses exhibit drought-avoiding life cycles in which rapid reproduction must be completed before soil water is exhausted. This strategy would seem to require a hydraulic system capable of sustaining reproduction at all costs to the rest of the plant, yet little is known about the whole-plant structure of hydraulic vulnerability in grasses.