Tobacco (Nicotiana tabacum) plants were transformed with a construct encoding phytochrome A (PHYA) antisense RNA. The construct inserted into the tobacco genome contained squash PHYA cDNA in an antisense orientation under the cauliflower mosaic virus 35S promoter providing for gene expression in higher plant tissues. Using immunoblot analysis and Z3-B1 antibodies against PHYA, the authors demonstrated that the PHYA content of the transgenic plants was lower than that of the wild-type plants. The studies of PHYA-dependent inhibition of hypocotyl elongation by high-intensity far-red light showed a considerable decrease in light sensitivity of the transgenic hypocotyl characteristic for aphyAmutation.
Russian Journal of Plant Physiology – Springer Journals
Published: Oct 10, 2004
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