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Title: | The pattern of cytokinin content in transgenic and wild-type tobacco seedlings as affected by heat-shock | Authors: | VESELOV, SY Kudoyarova, G.R. Mustafina, A. VALCKE, Roland |
Issue Date: | 1995 | Publisher: | MAIK NAUKA/INTERPERIODICA | Source: | RUSSIAN JOURNAL OF PLANT PHYSIOLOGY, 42(5). p. 617-620 | Abstract: | The pattern of the endogenous cytokinin content was monitored during the day in the shoots of transgenic tobacco plants (Nicotiana tabacum L.) containing a heat-inducible ipt gene responsible for isopentenyl-transferase synthesis. Heating transgenic plants at 40 degrees C for 1 h yielded an increase in endogenous cytokinins, as compared to the normal level in the plants kept at 24 degrees C for the whole period. However, this increase was not permanent, as after five hours following heat-shock treatment, there was essentially no difference in cytokinin content between heated and untreated plants. In the shoots of wild-type tobacco, heat shock activated the processes diminishing cytokinin concentration, which are the typical plant response to heat shock. When such a response also manifests itself in transgenic plants, it can cause a transient cytokinin accumulation after heat-shock treatment. | Notes: | LIMBURGS UNIV CENTRUM,DEPT SBM,B-3590 DIEPENBEEK,BELGIUM. RUSSIAN ACAD SCI,BASHKIR SCI CTR,INST BIOL,UFA 450054,RUSSIA. | Keywords: | NICOTIANA TABACUM; TRANSGENIC PLANTS; HEAT SHOCK; CYTOKININS | Document URI: | http://hdl.handle.net/1942/3597 | ISI #: | A1995RX38900005 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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