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.
There are two types of vascular tissue in a plant. Phloem, which conveys food from the leaves to the rest of the plant, and xylem which conveys water from the roots to the res â¦ t of the plant.he vascular tissues include xylem, which conducts water and minerals from the roots upward and throughout the plant, and phloem, which transports dissolved foods in all direc â¦ tions within the plant. The main conducting vessels of xylem are the tracheids and the vessels.