Study of transcription factors expression in oily sunflower under salt stress

Biotic and abiotic stresses are the most important factors limiting the yield of crops such as sunflower. Transcription factors are involved in regulating the genes that responsible for biotic and abiotic stresses. Therefore, identification and study of transcription factors is an effective step towards finding targeted strategies for tolerance of plants to stress. In this research using Real-Time PCR technology, transcript variations of two transcription factors WRKY and AP2Domain in different salinity conditions (2, 5, 8, 11, 14 ds/m) in two resistant (AS5305) and susceptible (9CSA3) line in sunflower oil were examined. Sampling from leaves of plants at the 8- leaf stage was performed at 4 times 6, 12, 24, 48 hours after applying stress. The results of statistical analysis showed that the gene expression level of encoding the transcription factors in the susceptible and resistant lines of sunflower was different. The rate of gene expression coding for the transcription factors of WRKY and AP2 Domain in the resistant line (AS5305) increased significantly compared to the susceptible line (9CSA3). In other words, higher expression of these genes results in more tolerance to salinity stress

کلیدواژه ها:

Sunflower ، Transcription factors ، Salt stress