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| Web URL(s): | https://academic.oup.com/aob/article/69/5/441/247332/
Last checked: 03/01/2017
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Pearce, Deborah M. E.;
Hall, Keith C.;
Jackson, Michael B. |
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| Title: | The effects of oxygen, carbon dioxide and ethylene on ethylene biosynthesis in relation to shoot extension in seedlings of rice (Oryza sativa) and barnyard grass (Echinochloa oryzoides) |
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| Source: | Annals of Botany. Vol. 69, No. 5, May 1992, p. 441-447. |
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| Publishing Information: | London, Oxford University Press |
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| Keywords: | TIC Keywords: Oxygen; Carbon dioxide; Ethylene; Biosynthesis; Echinochloa crusgalli; Seedlings
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| Abstract/Contents: | "Exposing dark-grown seedlings for 3 d to oxygen deficiency (0 or 5 kPa) or to additions of carbon dioxide (10kPa) or ethylene (0·1Pa) slowed shoot extension in Echinochloa oryzoides, while in rice it was promoted by these treatments, except that 5kPa oxygen was without effect. In E. oryzoides this was due to reduced growth of the mesocotyl, and in rice to enhanced growth of the coleoptile. These responses to carbon dioxide and oxygen deficiency were not consequences of increased ethylene production, since this remained unchanged by carbon dioxide and depressed by oxygen shortage in both species. Furthermore, exogenous ethylene and the ethylene action inhibitor 2, 5-norbornadiene each failed to influence extension in anoxic seedlings, indicated no regulatory role for ethylene in the absence of oxygen. However, concentrations of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) were increased by carbon dioxide and 0 kPa oxygen, although after 72h without oxygen total ACC production (i.e. changes in ethylene+ACC+MACC) was suppressed in both species. There was little effect on bound ACC [putative malonyl-ACC (MACC)] formation. Transferring anaerobic (0 kPa) seedlings to oxygenated conditions (21 kPa) resulted in abnormally fast rates of ethylene formation, possibly due to the accumulation of ACC under anoxia. This post-anoxic ethylene may have contributed to the faster extension by rice coloptiles and slower extension by mesocotyls of E. oryzoides compared with those of seedlings maintained continuously in air." |
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| Language: | English |
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| References: | 33 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pearce, D. M. E., K. C. Hall, and M. B. Jackson. 1992. The effects of oxygen, carbon dioxide and ethylene on ethylene biosynthesis in relation to shoot extension in seedlings of rice (Oryza sativa) and barnyard grass (Echinochloa oryzoides). Ann. Bot. 69(5):p. 441-447. |
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| Web URL(s):
https://academic.oup.com/aob/article/69/5/441/247332/
Last checked: 03/01/2017
Requires: PDF Reader |
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MSU catalog number: QK 1 .A53 |
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