The phloem vascular system facilitates transport of energy-rich sugar and signalling molecules in plants, thus permitting long-range communication within the organism and growth of ...
This is a preview. Log in through your library . Abstract Light microscopic studies of the petioles of Lagenaria siceraria reveal that the external phloem of each bicollateral vascular bundle develops ...
Numerous insects and pathogens extract nutrients from phloem tissue buried deep inside plants. These phloem-feeding insects and pathogens cause tremendous economic losses worldwide and represent some ...
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