| 个人简介 | |
|---|---|
 Prof. Siamak Shirani Bidabadi Isfahan University of Technology, Iran |
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| 标题： Arbuscular mycorrhizal fungus inoculation improves photosynthetic efficiency and antioxidant responses of Stevia rebaudiana (Bert.) under salt stress | |
| 摘要： Salinity as one of the important environmental factors limiting the productivity of crops is spreading in the arable lands day by day. A wide range of adaptations and mitigation strategies associated with efficient resource management and crop improvement has been used to overcome salinity stress. However, such strategies being long drawn and cost intensive, there is a need to develop simple and low cost biological methods for salinity stress management, which can be used on a short term basis. To investigate the possible role of arbuscular mycorrhizal fungi (AMF) in alleviating the negative effects of salinity on Stevia rebaudiana (Bert.), the regenerated plantlets in tissue culture was transferred to pots in greenhouse and inoculated with Glomus intraradices. Salinity caused a significant decrease in chlorophyll content and photosynthesis efficiency. The use of AMF in salt –affected plants resulted in improved all above mentioned characteristics. Malondialdehyde (MDA) contents increased in salt stressed plants while a reduction was observed due to AMF inoculation. CAT activity showed a significant increase up to 2 g/l and then followed by decline at 5 g/l NaCl in both AMF and non-AMF treated stevia, however, AMF inoculated plants maintained lower CAT activity at all salinity levels (2 and 5 g/l). Enhanced POX activities in salt- treated stevia plants was decreased by inoculation of plants with AMF. The addition of NaCl to stevia plants also resulted in an enhanced activity of SOD whilst, AMF plants maintained higher SOD activity at all salinity levels than those of non-AMF inoculated plants. AMF inoculation was capable of alleviating the damage caused by salinity on stevia plants by reducing oxidative stress and improving photosynthesis efficiency. | |
| 简介： Dr. Siamak Shirani Bidabadi is working as a faculty member in the area of plant tissue culture, plant physiology and organic horticulture in the Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, Iran. Most of his research experiences are due to the many articles that have been published on the tissue culture of the banana in high valued journals like Plant Groght Regulation, Australian Journal of Crop Science, Plant Omics, Journal of Agricultural Science and Journal of Crop Science and Biotechnology. He completed his Ph.D. degree from University Putra Malaysia (UPM) in 2011. Dr. Shirani Bidabadi is also in the processing of some new findings from his current researches such as “Iranian grapevine rootstocks and hormonal effects on graft union, growth and antioxidant responses of Asgari seedless grapeˮ, “Grafting of watermelon as a means to minimize cadmium toxicityˮ and “Alleviation of abiotic stresses through arbuscular mycorrhizal fungus in horticultural crops. His teaching activities include plant propagation, plant tissue culture and organic horticulture. Currently, he is interested in plant – microbe interaction and phytoremediation studies. | |
