Differences in membrane selectivity drive phloem transport to the apoplast fr…

Background and Aims: Floral development depends on photosynthetic products delivered by the phloem. Previous work suggested the path to the flower involved either the apoplast or the symplast. The objective of the present work was to determine the path and its mechanism of operation. Methods: Maize (Zea mays) plants were grown until pollination. For simplicity, florets were harvested before …