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STRUCTURE AND ULTRASTRUCTURE OF PLASTIDS IN LIGHT‐AND DARK‐GROWN ZAMIA FLORIDANA DC. SEEDLING ROOTS IN VITRO

David T. Webb

Open publisher page 9 citations

Abstract

Summary In dark grown aseptic seedling cultures of Zamia floridana DC. amyloplasts with many tightly packed starch grains developed in root cortical cells. In similar cultures exposed to 12 h photoperiods of 5 klx, plastids with characteristics of chromoplasts, chloroplasts and amyloplasts were formed. Light appeared to alter the pathway of plastid development and led to the formation of chloro‐chromo‐amyloplasts in these roots.

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Summary In dark grown aseptic seedling cultures of Zamia floridana DC. amyloplasts with many tightly packed starch grains developed in root cortical cells. In similar cultures exposed to 12 h photoperiods of 5 klx, plastids with characteristics of chromoplasts, chloroplasts and amyloplasts were formed. Light appeared to alter the pathway of plastid development and led to the formation of chloro‐chromo‐amyloplasts in these roots.

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Available abstract

Summary In dark grown aseptic seedling cultures of Zamia floridana DC. amyloplasts with many tightly packed starch grains developed in root cortical cells. In similar cultures exposed to 12 h photoperiods of 5 klx, plastids with characteristics of chromoplasts, chloroplasts and amyloplasts were formed. Light appeared to alter the pathway of plastid development and led to the formation of chloro‐chromo‐amyloplasts in these roots.

Key concepts: Amyloplast, Plastid, Chromoplast, Seedling, Chloroplast, Botany, Ultrastructure, Biology

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STRUCTURE AND ULTRASTRUCTURE OF PLASTIDS IN LIGHT‐AND DARK‐GROWN ZAMIA FLORIDANA DC. SEEDLING ROOTS IN VITRO — Research Paper | ScholarLens