Mycorrhizal Symbiosis
4. DISSCUSION
Based on the results of this study, mycorrhizal symbiosis had significant effect on fresh shoot weight, fresh root weight, dry shoot weight, dry root weight, root length, seedling height and percent of colonization. As is clear from Figure 1 and 2 in all treatments, by increasing water stress, a fallen trend of biomass plants was observed. Using the Glomus intraradices and Glomus mosseae as exotic fungi has led to a two-fold increase in biomass. It’s very impressive, use of mycorrhizal fungi has been increased dry matter so that under drought stress at 50% and 25% FC the reduction in biomass is much less than that found in the control treatment. These two fungi have not significant difference in normal irrigation treatment. On
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This can be interpreted so that with increasing drought stress, plants increase the length of roots, thus root weight is also increased. The highest root fresh weight observed in F&C in normal irrigation. (Manjunath et al., 1983) stated that inoculation with mycorrhizal fungi increases the shoot dry weight, roots and most morphological traits of the plant. Mycorrhizal fungi have a significant effect on uptake of nitrogen and phosphorus for plant growth and seedlings height. On the other hand, Mycorrhizal symbiosis delayed the leaf water potential drop under drought stress, also Mycorrhizal plants are much faster than non-mycorrhizal plants in absorbing the water and leaf water potential to reach balance (Wu et al., 2005). Mycorrhizal plants due to their much developed leaf area, lead to decrease in transpiration. In addition, mycorrhizal fungi cause the better osmotic adjustment and improve the relationship between water and plant by extending the hyphae around the root system and subsequently increasing the water absorption (Fagbola et al., 2001; Johnson and Hummel., 1985). Mycorrhizal fungi may change the shape and size of the roots in two aspects including 1. Nutritional …show more content…
The exotic and native AMF had no significant different, however interestingly, native AMF were more effective. Previously works suggest that, AMF reduce the H2O2 and MDA (Wu et al., 2009; Zhu et al., 2010; Benhiba et al., 2015) and this is probably due to the increased activity of antioxidant enzymes in AMF
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