Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings
The level of gibberellin-like substances was investigated in oat coleoptiles with different stationary states of phytochrome and in leaf segments which had been etiolated and irradiated with red light. Etiolated coleoptiles and leaves containing maximum amounts of the PR form of phytochrome were cha...
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| Format: | Article |
| Language: | English |
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Polish Botanical Society
2014-01-01
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| Series: | Acta Societatis Botanicorum Poloniae |
| Subjects: | |
| Online Access: | https://pbsociety.org.pl/journals/index.php/asbp/article/view/3013 |
| _version_ | 1818033981527949312 |
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| author | Jan Kopcewicz Mariusz Cymerski Kazimierz Madela |
| author_facet | Jan Kopcewicz Mariusz Cymerski Kazimierz Madela |
| author_sort | Jan Kopcewicz |
| collection | DOAJ |
| description | The level of gibberellin-like substances was investigated in oat coleoptiles with different stationary states of phytochrome and in leaf segments which had been etiolated and irradiated with red light. Etiolated coleoptiles and leaves containing maximum amounts of the PR form of phytochrome were characterized by an increased level of bound gibberellins. Irradiation with red light resulting in the photoconversion of phytochrome into the Pt R form caused the appearance of a high content of free gibberellins. It seems that the releasing the hormones from bound forms correlated with the formation of phytochrome PFR may be an important aspect of the mechanism of phytochrome action in the processes of seedling deetiolation. The interrelation between phytochrome and plant hormones in the control of photomorphogenesis of young monocotyledonous seedlings is also discussed. |
| first_indexed | 2024-12-10T06:31:54Z |
| format | Article |
| id | doaj.art-88fd99ad00ed48c6a703f5769d24cf8a |
| institution | Directory Open Access Journal |
| issn | 2083-9480 |
| language | English |
| last_indexed | 2024-12-10T06:31:54Z |
| publishDate | 2014-01-01 |
| publisher | Polish Botanical Society |
| record_format | Article |
| series | Acta Societatis Botanicorum Poloniae |
| spelling | doaj.art-88fd99ad00ed48c6a703f5769d24cf8a2022-12-22T01:59:04ZengPolish Botanical SocietyActa Societatis Botanicorum Poloniae2083-94802014-01-0156343744610.5586/asbp.1987.0412491Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlingsJan Kopcewicz0Mariusz Cymerski1Kazimierz Madela2Nicholas Copernicus UniversityNicholas Copernicus UniversityNicholas Copernicus UniversityThe level of gibberellin-like substances was investigated in oat coleoptiles with different stationary states of phytochrome and in leaf segments which had been etiolated and irradiated with red light. Etiolated coleoptiles and leaves containing maximum amounts of the PR form of phytochrome were characterized by an increased level of bound gibberellins. Irradiation with red light resulting in the photoconversion of phytochrome into the Pt R form caused the appearance of a high content of free gibberellins. It seems that the releasing the hormones from bound forms correlated with the formation of phytochrome PFR may be an important aspect of the mechanism of phytochrome action in the processes of seedling deetiolation. The interrelation between phytochrome and plant hormones in the control of photomorphogenesis of young monocotyledonous seedlings is also discussed.https://pbsociety.org.pl/journals/index.php/asbp/article/view/3013phytochromegibberellinsoat coleoptiles |
| spellingShingle | Jan Kopcewicz Mariusz Cymerski Kazimierz Madela Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings Acta Societatis Botanicorum Poloniae phytochrome gibberellins oat coleoptiles |
| title | Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings |
| title_full | Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings |
| title_fullStr | Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings |
| title_full_unstemmed | Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings |
| title_short | Phytochrome and endogenous gibberellin-like substances in etiolated and irradiated oat seedlings |
| title_sort | phytochrome and endogenous gibberellin like substances in etiolated and irradiated oat seedlings |
| topic | phytochrome gibberellins oat coleoptiles |
| url | https://pbsociety.org.pl/journals/index.php/asbp/article/view/3013 |
| work_keys_str_mv | AT jankopcewicz phytochromeandendogenousgibberellinlikesubstancesinetiolatedandirradiatedoatseedlings AT mariuszcymerski phytochromeandendogenousgibberellinlikesubstancesinetiolatedandirradiatedoatseedlings AT kazimierzmadela phytochromeandendogenousgibberellinlikesubstancesinetiolatedandirradiatedoatseedlings |