Coleoptile is the pointed protective sheath covering the emerging shoot in monocotyledons such as grasses in which few leaf primordia and shoot apex of monocot embryo remain enclosed. The coleoptile protects the first leaf as well as the growing stem in seedlings and eventually, allows the first leaf to emerge. [ 1 ]

Other articles where coleoptile is discussed: plant development: Origin of the primary organs: …cell forms part of the coleoptile and also gives rise to the shoot apex and the tissues of the root and coleorhiza.

Coleoptile is different from coleorhiza. Coleorhiza is a sheath-like structure connecting the coleoptile to the primary root, defending the radicle in monocots while the coleoptile is a pointed protective sheath covering the emerging shoot in monocots.

Coleoptiles are cylindrical organs that ensheath the first leaf and shoot apex in grass seedlings. They help in the emergence of the first leaf (and shoot apex) by protecting it during its passage through the soil. On emergence, the first leaf breaks through the coleoptile tip.

The meaning of COLEOPTILE is the first leaf of a monocotyledon forming a protective sheath about the plumule.

The coleoptile tissue is wrapped somewhat like inner leaves are wrapped, or rolled, in the whorl. Expansion of the inner true leaves eventually forces the coleoptile to partially unwrap near the tip, allowing the first true leaf to emerge.

The coleoptile is a rigid piece of plant tissue that encloses the first few leaves (or plumule) of the corn seedling as the mesocotyl elongates and "pushes" the coleoptile to the soil surface during the emergence process.

We propose a concept to account for the GLP-mediated epidermal wall-loosening process in coleoptile segments, and present a more general model of growth regulation in intact maize seedlings.

coleoptile a nonchlorophyllous protective covering over the growing shoot (PLUMULE) of young plant seedlings in certain MONOCOTYLEDONS (e.g. oats) that is the first structure to break through the soil into the air after germination.

The major difference between coleoptile and coleorhiza is that coleoptile is a protective sheath that encloses the plumule in monocot seed, it come out from soil become green and perform photosynthesis whereas coleorhiza is undifferentiated sheath that encloses the radical and root cap in monocot seed, it is not Green, remain in soil and do not ...