PJB-2019-211
TRICHODERMA INDUCED ALTERATIONS IN GROWTH, PIGMENTS, PROLINE AND GLUTATHIONE HOMEOSTASIS IN CUCURBITA PEPO SEEDLINGS UNDER SALINITY STRESS
MONA. H. SOLIMAN
Abstract
Experiments were conducted to investigate the role ofTrichoderma sp (Trichoderma harzianumand Trichoderma viride) in growth, chlorophyll pigments synthesis and proline accumulation of Cucurbita pepo exposed to salinity stress. Salt stress (50, 100 and 150 mM) significantly decline the growth regarding the shoot and root length which was however ameliorated by inoculation of Trichoderma spp. Cucurbita pepo inoculated with Trichoderma exhibited increased synthesis pigments like chlorophyll a, chlorophyll b, carotenoids and anthocyanins resulting in higher growth rate compared to control as well s salt stressed counterparts, and it was interesting to see such positive effects were maintained when applied to salt-stressed plants. Inoculation of Trichoderma spp enhanced the synthesis of proline, glutathione, proteins and increased the relative water content. In addition, increased membrane stability and reduced generation of hydrogen peroxide were obvious in plants inoculated with Trichoderma spp. Therefore Trichoderma sp can be exploited either individually or combinedly for enhancing the growth and yield productivity of Cucurbita pepo under saline conditions.
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