Role of Aquaporins in Salt Tolerance of Common Sunflower
Hasan, S., Rabei, S., Nada, R., Abogadallah, G. (2019). Role of Aquaporins in Salt Tolerance of Common Sunflower. EKB Journal Management System, 9(1), 20-31. doi: 10.21608/sjdfs.2019.194821
Solwan A Hasan; Sami H. Rabei; Reham M. Nada; Gaber M. Abogadallah. "Role of Aquaporins in Salt Tolerance of Common Sunflower". EKB Journal Management System, 9, 1, 2019, 20-31. doi: 10.21608/sjdfs.2019.194821
Hasan, S., Rabei, S., Nada, R., Abogadallah, G. (2019). 'Role of Aquaporins in Salt Tolerance of Common Sunflower', EKB Journal Management System, 9(1), pp. 20-31. doi: 10.21608/sjdfs.2019.194821
Hasan, S., Rabei, S., Nada, R., Abogadallah, G. Role of Aquaporins in Salt Tolerance of Common Sunflower. EKB Journal Management System, 2019; 9(1): 20-31. doi: 10.21608/sjdfs.2019.194821

Role of Aquaporins in Salt Tolerance of Common Sunflower

Scientific Journal for Damietta Faculty of Science
Volume 9, Issue 1, 2019, Page 20-31  XML PDF (740.23 K)
Document Type: Original articles
DOI: 10.21608/sjdfs.2019.194821
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Authors
Solwan A Hasan email 1; Sami H. Rabeiorcid 2; Reham M. Nada2; Gaber M. Abogadallah2
1Department of Botany, Faculty of Science, Damietta University, New Damietta 34517, Egypt.
2Department of Botany, Faculty of Science, Damietta University, New Damietta 34517, Egypt
Abstract
The present work is addressed photosynthetic rate, growth rates and quantification of aquaporin genes expression on sunflower plant to examine the expression and regulation profiles of some aquaporins, their role in regulating water transport during salt stress and their role in improving plant tolerance to stresses. The differential regulation of aquaporins might contribute to increased resistance/susceptibility to a specific stress, in a species-specific way. Aquaporins fine regulation helps plants maintain a positive water balance under detrimental environmental conditions. Both down- and up-regulation of aquaporin expression leading to changes in membrane permeability have been described and proposed to be beneficial for plants experiencing water deficit. Plants may decrease the water permeability of their cell membranes to avoid excessive loss of water from the root to the soil and / or aquaporins might play a role in stress avoidance by enhancing root water uptake, when the water potential gradient between soil and root xylem is still favorable. The contribution of both types of responses may depend on the plant species, the intensity and duration of the stress and aquaporin isoform. The salt tolerance is a complex trait but might be partly due to the expression of stress-inducible aquaporin isoforms. The plant shows different expression level of PIP1;5, PIP2;1, PIP2;3, TIP1;1 as well as different  water transport activity.
Keywords
Aquaporin; gene expression; salinity; salt tolerance; sunflower
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