Author/Authors :
Hajizadeh، Hanife نويسنده National Institute of Genetic Engineering and Biotechnology, Tehran-Karaj Highway, P.O. Box 14965/161, Tehran, I.R. Iran Department of Horticultural Sciences, University of Tehran, P.O. Box 4111, Karaj, I.R. Iran Department of Agricultural Biotechn , , Razavi، Khadije نويسنده National Institute of Genetic Engineering and Biotechnology, Tehran-Karaj Highway, P.O. Box 14965/161, Tehran, I.R. Iran , , Mostofi، Younes نويسنده Department of Horticulture, Faculty of Agricultural Engineering, Tehran University, Karaj, Iran. , , Cacco، Giovanni نويسنده Department of Agricultural Biotechnology, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), Italy , , Mousavi، Amir نويسنده , , Zamani، Zabihollah نويسنده Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj 31587, Iran , , Stevanato، Piergiorgio نويسنده Department of Agricultural Biotechnology, University of Padova, Viale dell’Università 16, 35020 Legnaro (PD), Italy ,
Abstract :
Ethylene plays an important role in wide-ranging aspects of plant growth and development, including fruit ripening, leaf and flower senescence. In this study, the expression patterns of two genes involved in the ethylene signal transduction pathway (RhCTR1 and RhCTR2) were investigated during the flower opening stages in two Rosa hybrida cultivars, ‘Black magic’ and ‘Maroussia’, which are characterized by short and long vase lives, respectively. RhCTR1 expression increased significantly during flower opening in both cultivars, but its expression level in cv. Maroussia was significantly higher than that in cv. Black magic. No variation in gene expression was detected for RhCTR2 in both cultivars. Therefore, this study showed that the vase life of the two cultivars correlated with the expression of RhCTR1, but not with that of RhCTR2, the behavior of which is typical of a constitutive gene.
