Document Details

Document Type : Article In Journal 
Document Title :
Physiological and Biochemical Impairment in Bean Plants Due to Supplementary
التغيرات الفسيولوجية والكيموحيوية في نبات الفول نتيجة للأشعة فوق البنفسجية والجفاف: الأدوار المحتملة لمضادات الأكسدة
 
Subject : Enviromental sciences 
Document Language : English 
Abstract : Physiological and biochemical responses of bean (Vicia faba L.) plants to either supplementary ultraviolet (sUV-B) radiation, and/or water (WS) stress were investigated. Both stresses reduced yield and altered net photosynthetic rates (PN) and stomatal conductance (gs). Such response may be due to the oxidative damage indicated by an increase in the H2O2 content and lipid peroxidation. Furthermore, increases in activities of stress markers indicated that sUV-B has a stronger stress effect than WS, and it caused greater membrane damage, as assessed by lipid peroxidation and osmolyte leakage. The activities of ascorbate peroxidase (APX) and superoxide dismutase (SOD) were increased under both stresses when applied alone and in combination, while catalase (CAT) activity decreased under water stress as compared to the control. The combination of drought and UV-B, were more than additive, caused more severe damage than stress factors applied separately. WS induced accumulation of UV-B absorbing secondary pigments (anthocyanin and flavonoids) which is likely to offer some protection from UV-B irradiation. 
ISSN : 1991-8178 
Journal Name : Australian Journal of Basic and Applied Sciences 
Volume : 9 
Issue Number : 6 
Publishing Year : 1433 AH
2012 AD 
Article Type : Article 
Added Date : Sunday, June 2, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
I.A. HassanHassan, I.A. InvestigatorDoctorateihassan_eg@yahoo.com
J.M. BasahiBasahi, J.M. ResearcherDoctorate 
M.W. KadiKadi, M.W. ResearcherDoctorate 

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