spongy mesophyll cell

The adjacent epidermal and spongy mesophyll cells were not structurally affected.

They are vertically elongated, a different shape from spongy mesophyll cells beneath them in the leaf.

Beneath the palisade mesophyll are the spongy mesophyll cells, which also perform photosynthesis.

The first type, referred to as the spongy mesophyll cells, had a shape distinct from that of the isolated cells; they were elongated and often branched.

However, in shaded leaves there are fewer spongy mesophyll cells per unit area and a greater proportion of intercellular space than in unshaded leaves.

The elongated spongy mesophyll cells were therefore excluded during the isolation procedures; because of their elongated irregular shape they were probably eliminated during cell filtration to remove debris.

Palisade and spongy mesophyll cells underwent hypertrophic (abnormal cell enlargement) and hyperplastic (abnormal cell division) responses in the region adjacent to severely collapsed tissue, causing reduced intercellular spaces.

Epidermal and palisade cells of the dwarf were longer than those of the normal cultivar and the dwarf had longer spongy mesophyll cells and more layers of spongy mesophyll than the normal, with fewer intercellular spaces.