Abstract
Mycorrhizal symbiosis in plants changes the relationship between plant roots and soil pathogens, leading sometimes to an increase in disease resistance. Since phosphate uptake is the main effect of mycorrhizal colonization, we measured the effect of the levels of phosphate in plant nutrition on the defense response in bean roots. Bean plants growing in a nutrient solution with either 9 or 85 mg/L were elicited to compare phytoalexin accumulation to measure the effect at short and long term of phosphate supply and defense response. Adequate phosphate nutrition did not increase phytoalexin levels in the roots, meanwhile roots lacking phosphate did respond accumulating a phytoalexin. This suggests that the increased resistance observed in mycorrhizal roots is not due to increased accessibility of phosphate in colonized roots.
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Alvarez-Manrique, L., Richards, A., Soriano, E. (2007). Defense response in bean roots is not affected by low phosphate nutrition. In: Velázquez, E., Rodríguez-Barrueco, C. (eds) First International Meeting on Microbial Phosphate Solubilization. Developments in Plant and Soil Sciences, vol 102. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5765-6_18
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DOI: https://doi.org/10.1007/978-1-4020-5765-6_18
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