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RISS 인기검색어
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- 저자 : Saud A. Alamri (검색결과 1 건)
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Manzer H. Siddiqui,Saud A. Alamri,Mutahhar Y. Al-Khaishany,Mohammed A. Al-Qutami,Hayssam M. Ali,Hala AL-Rabiah,Hazem M. Kalaji 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.6
Due to increasing soil salinity, the world agricultural output is being threatened by the shrinking area offertile land. In the present study, we explored the interactive roles of nitric oxide (NO; 100 μM) and spermidine (SP;200 μM) in ameliorating the effects of salt stress (NaCl; 100 mM) in tomato (Solanum lycopersicum L. var. FiveStar) seedlings. NaCl stress reduced shoot and root length, shoot and root fresh weight, shoot and root dry weightplant-1 and leaf area leaf-1. NaCl stress also suppressed the biosynthesis of photosynthetic pigments (Chlorophyll aand b) and increased proline (Pro) content, membrane damage and lipid peroxidation by inducing reactive oxygenspecies (H2O2 and O2•−) generation in roots and leaves, as well as electrolyte leakage (EL) and malondialdehyde(MDA) accumulation in leaves. However, applying NO and/or SP increased the activities of catalase, peroxidase,superoxide dismutase, glutathione reductase and ascorbate peroxidase and increased photosynthetic pigment (chlorophylla and b) and Pro accumulation, as well as reducing H2O2, O2•− and MDA content and EL, under salt stress. Whentomato plants were treated with NO and SP simultaneously, NO signaling was further enhanced, which was confirmedby the addition of cPTIO [2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide; NO scavenger].
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