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Nitrogen Uptake from Amino Acids in Maize through Arbuscular Mycorrhizal Symbiosis

¹ Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
² Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
³ Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
⁴ Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
⁵ Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
⁶ Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
⁷ Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan

American Journal of Plant Sciences·Volume 04 (2013)·Pages 2290–2294·Published 21 November 2013·DOI10.4236/ajps.2013.412283

Abstract

Maize plants are well colonized with arbuscular mycorrhizal fungi (AMF), which contribute mineral nutrients absorp tion from soil. However little is known about their role in nitrogen (N) absorption especially from amino acids, which reach a considerable quantity in soils. This experiment was conducted to investigate N acquisition from amino acids through AMF symbiosis. AMF inoculation clearly increased the N content of maize supplied with amino acids (Glu, Ala and Pro). Further study of xylem sap revealed that the composition of amino acids was changed by AMF inocula tion. These results indicate that AMF contribute N from amino acids, and may affect the nitrogen assimilation of host plants.

KeywordsAmino Acid CompositionAlaGluProXylem Sap

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Nitrogen Uptake from Amino Acids in Maize through Arbuscular Mycorrhizal Symbiosis

Abstract

References (23)