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Photomorphogenesis in Sinningia speciosa, cv. Queen Victoria II. Stem Elongation: Interaction of a Phytochrome Controlled Process and a Red-requiring, Energy Dependent Reaction.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Satter, Ruth L. Wetherell, Donald F. |
| Copyright Year | 1968 |
| Abstract | When Sinningia plants were grown with fluorescent light of photosynthetic intensity for 8 hours each day, stems became abnormally elongated when the P(FR) level was lowered by far red light given during the last half of several consecutive nights. However, plants were even taller if the source also emitted red light. Elongation was independent of the red/far red energy ratio if it was lower than one, but dependent upon irradiance at all values tested.Elongation of plants irradiated by a well filtered far red source was presumed to be limited by a shortage of respiratory substrate. Enhancement by radiation shorter than 700 mmu was attributed to promotion of processes leading to increased substrate supply. Protochlorophyllide was regarded as the primary photoreceptor. Its photoreduction promoted chlorophyll synthesis which, in turn, increased photosynthetic capacity and thus substrate supply. |
| File Format | PDF HTM / HTML |
| DOI | 10.1104/pp.43.6.961 |
| PubMed reference number | 16656868 |
| Journal | Medline |
| Volume Number | 43 |
| Issue Number | 6 |
| Alternate Webpage(s) | http://www.plantphysiol.org/content/plantphysiol/43/6/961.full.pdf |
| Alternate Webpage(s) | https://doi.org/10.1104/pp.43.6.961 |
| Journal | Plant physiology |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
