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| Publication Type:
| Refereed |
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| Author(s): | Thomas, H.;
Stoddart, J. L. |
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| Author Affiliation: | Plant Biochemistry Department, Welsh Plant Breeding Station, Aberystwyth |
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| Title: | Biochemistry of leaf senescence in grasses |
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| Section: | Proceedings of the association of applied biologists
Other records with the "Proceedings of the association of applied biologists" Section
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| Source: | Annals of Applied Biology. April 1977, p. 461-463. |
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| Publishing Information: | London, England, United Kingdom: Cambridge University Press |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Nucleic acid; Plant growth regulators; Cycloheximide; Chloramphenicol; Chlorophyll; Degradation; Festuca pratensis; Actinomycetales
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| Geographic Terms: | UK |
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| Abstract/Contents: | In leaf sections of meadow fescue cv. Aberystwyth Perdita, which has a yellowing gene Y (normal leaf senescence pattern, see HbA 46, 1348), MDMP and cycloheximide prevented chlorophyll degradation, but chloramphenicol did not, indicating that Y mRNA was translated by the 80S ribosomes of the cytoplasm and not by the 70S ribosomes of the chloroplasts. Actinomycin-D, rifampicin and 5-FU had no inhibitory effect on chlorophyll degradation, indicating that the mRNA transcripts were present before senescence was initiated by excision and suggesting that the signal to commence synthesis of Y protein operated at the post-transcription level. It was considered that a large part of the biochemical apparatus for senescence pre-exists in the leaf in latent form, and that the impulse initiating leaf senescence could be a cytoplasmic operator. |
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| Language: | English |
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| References: | 6 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Thomas, H., and J. L. Stoddart. 1977. Biochemistry of leaf senescence in grasses. Ann. Appl. Biol. p. 461-463. |
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