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Leaf anatomy and chloroplast ultrastructure of Mn-deficient orange plants

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Papadakis I. E., Bosabalidis A. M., Sotiropoulos T. E., Therios I. N.

Acta Physiologiae Plantarum

2007

tom 29

nr 4

Leaf samples of Mn-deficient and Mn-sufficient (control) ‘Navelate’ orange plants grown in a greenhouse were taken to investigate the effects of Mn deficiency in leaf structure and chloroplast ultrastructure. Total leaf chlorophyll concentration was significantly lower in Mn-deficient plants than in control ones. Entire lamina thickness was not altered due to Mn deficiency. However, Mn deficiency resulted in disorganization of mesophyll cells, mainly of palisade parenchyma cells. The number of mesophyll chloroplasts per cellular area and their length were both affected negatively. The membranous system of chloroplasts was also disorganized. The percentages of starch grains and plastoglobuli per chloroplast of Mn-deficient leaves were significantly greater than those of control leaves.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Bosabalidis A. M.

1 Papadakis I. E.

1 Sotiropoulos T. E.

1 Therios I. N.

1 2007

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Leaf anatomy and chloroplast ultrastructure of Mn-deficient orange plants