Some strains of S marcescens are capable of producing a pigment called prodigiosin, which ranges in color from dark red to pale pink, depending on the age of the colonies.
Vascular Tissue: the xylem and phloem in leaves are confined to vascular bundles or veins. Veins are surrounded by a layer of cells call the bundle sheath. The bundle sheath can be composed of parenchyma, colenchyma, or fibers.
Ground tissues in leaves contain many chloroplasts, which are important in photosynthesis. Ground tissue in stems and roots functions mainly in the storage of water, sugar, and starch. In nonwoody parts or plants, ground tissue surrounds and supports vascular tissue. î î î.