Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Marina Alina DRAGOTA, Ștefana JURCOANE
The importance of mycorrhiza for the plant is not limited to the absorption of water and nutrients from the soil. Symbiotic plants are often more competitive and more tolerant to environmental stress than those without mycorrhizae. Here we can give an example of osmotic stress, mycorrhizae make plants more resistant to cold weather (below 15 degrees). Arbuscular mycorrhizal fungi colonize the roots of most monocotyledons and dicotyledons despite their different root architecture and cell patterning. Key Result Large lateral roots are preferentially colonized, and fine lateral roots are immune to arbuscular mycorrhizal colonization. Fungal preference for large lateral roots also occurred in sym mutants that block colonization of the root beyond rhizodermal penetration.
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