【摘 要】
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There are four major types of isoprenoid cytokinin determined in plant tissues: trans-zeatin, cis-zeatin, dihydrozeatin and isopentenyladenine.Their homeostasis is kept by various metabolic conversion
【机 构】
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Department of Molecular Biology, Centre of the Region Haná for Biotechnological and Agricultural Res
【出 处】
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21st Conference of the International Plant Growth Substances
论文部分内容阅读
There are four major types of isoprenoid cytokinin determined in plant tissues: trans-zeatin, cis-zeatin, dihydrozeatin and isopentenyladenine.Their homeostasis is kept by various metabolic conversions.Genes coding for degradation, biosynthesis and glycosylation enzymes have been explored just after the Arabidopsis genome sequencing.In the past, the metabolism of trans-zeatin and isopentenyladenine has been predominantly investigated.Information concerning origin of cis-zeatin and dihydrozeatin remains rather scarce, even though they are prevalent cytokinin forms in many plant species, e.g.cereals.Enzyme activities for zeatin cis-trans isomerase and zeatin reductase has been described in the past, but the enzymes or respective genes have not been identified yet.
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