نهمین کنفرانس ملی و اولین کنفرانس بین المللی فیزیولوژی گیاهی

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کد مقاله 1030

عنوان Cell wall modifications during the interaction of two forms of Bacillus thuringiensis with mycorrhizal fungi

نویسندگان Seyedeh Fatemeh Fallah - Mansour Afshar-Mohammadian

چکیده The interactions between arbuscular mycorrhizal fungi (AMFs) and Bacillus thuringiensis can enhance plant growth, yet their combined effects under soluble and insoluble phosphorus conditions remain unclear. This study evaluated three AMF species, Funneliformis mosseae (AMF1), Funneliformis caledonium (AMF2), and Acaulospora langula (AMF3), in combination with vegetative and endospore forms of B. thuringiensis in strawberry grown under insoluble P, and P-available conditions. Under insoluble P, vegetative B. thuringiensis produced the greatest growth improvements, particularly with AMF3 (up to 89% above the uninoculated control) and AMF2 (up to 80%). Dual inoculation with vegetative cells increased root length, biomass. In contrast, under P-available soil, dual inoculation reduced AMF colonization (11%), root length and biomass, reflecting indicating downregulation of symbiosis when external P is sufficient. FTIR analyses showed that vegetative cells enhanced polysaccharide deposition, whereas endospores increased lignin-associated features. Overall, the benefits of AMF-B. thuringiensis were most evident under conditions of insoluble P, emphasizing their potential to enhance nutrient uptake in low P soil.

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