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.
C4 plants have bundle-sheath and mesophyll cells that are  concentrically arranged into tightly packed sheaths around the  veins of the leaf known as Kranz anatomy. However â¦ in C3 plant,  these distinct vein anatomy arrangement is absent.