Centripetal disposition of bundle sheath chloroplasts during the leaf development of Eleusine coracana
1987
Miyake, H. | Yamamoto, Y.
Distribution of chloroplasts in bundle sheath cells was examined by light and electron microscopy during the leaf development of finger millet (Eleusine coracana Gaertn.), an NAD malic enzyme type C4 plant with centripetal arrangement of bundle sheath chloroplasts. Young chloroplasts are almost evenly distributed along the cell walls in bundle sheath cells of folded immature leaves. In elongating leaves and above the elongation zone the bundle sheath chloroplasts tend to lie along the radial walls and the walls adjacent to the vascular bundle. They further migrate near to the vascular bundle and finally establish a centripetal arrangement. Mitochondria, microbodies and nucleus migrate along with the chloroplasts. Etioplasts and other organelles are centripetally located in the bundle sheath cells of etiolated seedlings grown in the dark.
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