Enhancing growth performance and systemic acquired resistance of medicinal plant Sesbania sesban (L.) Merr using arbuscular mycorrhizal fungi under salt stress

Journal Article
Abd_Allah, Elsayed Fathi . 2015
Publication Work Type: 
ورقة علمية
Magazine \ Newspaper: 
Saudi Journal of Biological Sciences
Issue Number: 
Publication Abstract: 

Pot experiments were conducted to evaluate the damaging effects of salinity on Sesbania
sesban plants in the presence and absence of arbuscular mycorrhizal fungi (AMF). The selected
morphological, physiological and biochemical parameters of S. sesban were measured. Salinity
reduced growth and chlorophyll content drastically while as AMF inoculated plants improved
growth. A decrease in the number of nodules, nodule weight and nitrogenase activity was also evident
due to salinity stress causing reduction in nitrogen fixation and assimilation potential. AMF
inoculation increased these parameters and also ameliorated the salinity stress to some extent.
Antioxidant enzymes like superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase
(APX) and glutathione reductase (GR) as well as non enzymatic antioxidants (ascorbic acid and
glutathione) also exhibited great variation with salinity treatment. Salinity caused great alterations
in the endogenous levels of growth hormones with abscisic acid showing increment. AMF inoculated
plants maintained higher levels of growth hormones and also allayed the negative impact
of salinity.

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