Cellular and Ultrastructural Changes in Mesophyll and Bundle Sheath Cells of Maize in Response to Water Stress

AUTOR(ES)

Giles, Kenneth L.

RESUMO

Ultrastructural changes were correlated with leaf water potential, relative water content, and abscisic acid levels in the leaf. Mesophyll cells were more prone to damage than bundle sheath cells at a leaf water potential of -18.5 bars. Tonoplast breakdown and cell disruption occurred in 25% of the mesophyll cells. On rewatering, these disrupted cells did not recover. In bundle sheath cells, starch, lost at about -13.5 bars leaf water potential, reappeared within 2.5 hours of rewatering.

Documentos Relacionados

• Water Stress Effects on the Content and Organization of Chlorophyll in Mesophyll and Bundle Sheath Chloroplasts of Maize 1
• Localization of Ferredoxin Isoproteins in Mesophyll and Bundle Sheath Cells in Maize Leaf
• bundle sheath defective2, a Mutation That Disrupts the Coordinated Development of Bundle Sheath and Mesophyll Cells in the Maize Leaf.
• Separation of Mesophyll Protoplasts and Bundle Sheath Cells from Maize Leaves for Photosynthetic Studies
• Photochemical Properties of Mesophyll and Bundle Sheath Chloroplasts of Maize 1