A Crystalline Inclusion In the Chloroplates of the Outer Hyphoderminal Cells of the Banana Fruit

Abstract

SummaryCrystalline inclusions have been found in chloroplasts of the outer hypodermal cells of the peel of the banana fruit. Their structure has been observed at varying stages of ripeness of the fruit and, in line with earlier suggestions, a possible storage function is ascribed to them.

Crystalline bodies in an algal chloroplast

“…The range in shape and variation of the inclusions is similar to those reported in the literature (see Bain 1968). In some reports, the bodies discussed are contained within a sac bounded by a single membrane.…”

“…show a crystalline body within the matrix of some chloroplasts. Similar structures are reported from higher plants (see Wrischer 1967, andBain 1968, for reviews of crystalline bodies in vascular plants). Early reports considered these inclusions possibly of viral origin; however, later these reports have been refuted.…”

“…In some reports, the bodies discussed are contained within a sac bounded by a single membrane. Bain (1968) states that this may result from senescence of the organs studied. Also, she comments that reports of a wide clear area around the inclusion is the result of osmium fixation used by some workers.…”

The chloramphenicol altered fine structure ofAnabaena cylindrica

“…A similar situation occurs in higher plants where RuBP Case can be deposited as a crystal between thylakoids (Shumway, Weier & Stocking, 1967). Many such crystals in higher plants have surrounding membranes equivalent to those of the carboxysome (DeGreef & Verbelen, 1973;Grilli, 1970;Bain, 1967). The higher plant also accumulates large quantities of RuBP Case, accounting for 27-36 ~ of the total water soluble protein (Kawashima & Wildman, 1970).…”

Comportement D'Une Formation Cytoplasmatique du Mégasporocyte enBupleurum

“…L'inclusion paracristalline de B. canescens montre quelque ressemblance, dans sons ultrastructure et au moins sous certaines incidences de coupe, avec des formations paracristallines retrouvees dans le cytoplasme ou dans le noyau ou dans quelque organite de cellules vegetales (THORNTON et THI-MANN 1964;LANCE-NOUGAREDE 1965;LEMOINE 1966;LANCE-NOUGA-REDE 1966;PRICE et THOMSON 1967;WRISCHER 1967;}ENSEN et VAL-DOVINOS 1967;WEINTRAUB, RAGETLI et VETO 1968;VILLIERS 1968;BAIN 1968;BEHNKE 1969;WoLKEN 1969;ZEE 1969;}ENSEN et BowEN 1970;WERGIN, GRUBER et NEWCOMB 1970;GRILLI 1970;PALANDRI 1970;CARNIEL 1970;FABBRI et MENICANTI 1970;BEHNKE 1971;Tu, MALHOTRA et PRASAD 1971;UNZELMAN et HEALEY 1972).…”