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Chloroplast photooxidation affects the accumulation of cytosolic mRNAs encoding chloroplast proteins in maize by Diane G. Burgess; William C. Taylor is a Agricultural and Biological Sciences article available to read on EtoBox.

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Maize (Zea mays L.) seedlings were grown in the presence or absence of an herbicide, norflurazon (4-chloro-5-(methylamino)-2-(o~,o~,0ctrifluoro-m-tolyl)-pyridazinone), which prevents the accumulation of colored carotenoids. In the absence of carotenoids, plants grown in high light incur extensive photooxidative damage to their plastids, but relatively little damage elsewhere. Growth in very low light minimizes chlorophyll photooxidation and allows chloroplast development to proceed. We have previously reported that mRNA encoding light-harvesting chlorophyll a/b protein (LHCP) fails to accumulate in high-tightgrown carotenoid-deficient seedlings, but accumulates normally in carotenoid-deficient seedlings grown in low light. Here we extend these results by examining the levels of translatable mRNAs encoding seven additional nuclear-encoded chloroplast proteins. When norflurazon-treated seedlings were grown in low light for 8 d and then transferred to high light for 24 h, three cytosolic mRNAs (plastocyanin, Rieske Fe-S protein, and the 33-kdalton (kDa) subunit of the photosystem II O2-evolving complex) decreased to less than 1% the amount found in untreated seedlings. Two other mRNAs

Who reads Chloroplast photooxidation affects the accumulation of cytosolic mRNAs encoding chloroplast proteins in maize?

Author

Diane G. Burgess; William C. Taylor

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0032-0935)

Published

1987

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)