| dc.description.abstract | Soil salinization, along with drought, is a natural threat that has a great impact on
agricultural production in many locations throughout the world. The cytokinin
oxidase/dehydrogenase (CKX) plays an essential role in regulating plant CK levels to
develop abiotic-tolerant plants. This study aimed to find out whether there were
differential effects of salinity on GmCKX-transgenic and wild-type (WT) soybean
(Glycine max L.) plants. The effects of salt stress were monitored by deploying different
concentrations of NaCl. According to the obtained results, the transgenic plants could
maintain a better germination rate (77.5%) than the WT (60%) after 4-day treatment of
200 mM NaCl. In addition, as the level and duration of salinity stress increased, there was
a decrease in relative water content in the soybean shoots and an increase in peroxidation
of the membrane lipid. At a concentration of 100 mM NaCl, the malondialdehyde (MDA)
content of the WT was significantly higher compared to the GmCKX13-transgenic plants
by 21.37%, as recorded on day 12th of salt stress treatment, indicating a higher stressinduced damage level in the former genotype. Taking these findings together, it is
suggested that modulating the expression of CKX13 could contribute to better salt
tolerance in soybean, providing a novel strategy for developing new salinity-tolerant
varieties. | en_US |
