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. 1983 Mar;71(3):688–691. doi: 10.1104/pp.71.3.688

Iron Nutrition-Mediated Chloroplast Development

John N Nishio 1, Norman Terry 1
PMCID: PMC1066100  PMID: 16662889

Abstract

Membrane development in chloroplasts was explored by resupplying iron to iron-deficient sugar beet (Beta vulgaris L. cv F58-554H1) and monitoring changes in lamellar components during regreening. The synthesis of chlorophyll a, chlorophyll b, and Q, the first stable electron acceptor of photosystem II, exhibited a lag phase during the first 24 to 48 hours of resupply. In contrast, the per area amounts of P700 and cytochrome f increased linearly over the first 48 hours. During the early regreening period, the Q to P700 ratio was 2.6 and decreased to 0.7 after 96 hours of regreening. The rate of photosynthesis (net CO2 uptake) per chlorophyll increased during the first 48 hours of resupply, then by 96 hours decreased to values typical of control plants. The results suggest that there was preferential synthesis of the measured photosystem I components during the first 24 to 48 hours, while from 48 to 96 hours there was rapid synthesis of all components. The iron nutrition-mediated chloroplast development system provides a useful experimental approach for studying biomembrane synthesis and structural-functional relations of the photosynthetic apparatus.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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