Histochemical and ultrastructural study of Caesalpinia peltophoroides Benth. (Leguminosae-Caesalpinoideae) seeds

Revista Árvore

Viviana Borges Corte²  Marília Contin Ventrella¹  Eduardo Euclydes De Lima E Borges¹  Claudia Aparecida Pontes²  Daniel Pinho² 

[1] ,Universidade Federal de Viçosa Programa de Pós-Graduação em Ciência Florestal Viçosa MG

关键词: Histochemistry;    compartmentalization;    reserve materials;    Histoquímica;    compartimentalização;    compostos de reserva;   

DOI  :  10.1590/S0100-67622009000500010

来源: SciELO

【 摘 要 】

The objective of this work was to correlate data on light microscopy observations through histochemical analysis and polarized light techniques and investigations in transmission electron microscopy (TEM) to characterize the reserve materials in C. peltophoroides Benth. (Leguminosae-Caesalpinoideae) cotyledons, popularly known as "sibipiruna", a tropical tree species with wide distribution in Brazil. The cotyledon mesophyll, especially in the abaxial face, is rich in unsaturated neutral lipids contained in numerous lipid bodies dispersed in the cytoplasm. Proteins, more concentrated in the adaxial face of the cotyledons, occur in all the mesophyll and are stored in protein bodies containing globoids, with variable number and size, responsible for accumulation of mineral reserves. Calcium oxalate druses have distribution restricted to the cotyledons adaxial face and are associated with protein bodies. Starch, also distributed all over the cotyledon mesophyll, occurs in small amounts in plastids with developed lamellar system. Secretory cavities rich in phenolic compounds occur among procambial strands.

【 授权许可】

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