Influence of arbuscular mycorrhizal fungi on uptake of Zn and P by two contrasting rice genotypes

R. Hajiboland, N. Aliasgharzad and R. Barzeghar
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R. Hajiboland: Plant Science Department, University of Tabriz, Tabriz, Iran
N. Aliasgharzad: SoilScience Department, University of Tabriz, Tabriz, Iran
R. Barzeghar: Plant Science Department, University of Tabriz, Tabriz, Iran

Plant, Soil and Environment, 2009, vol. 55, issue 3, 93-100

Abstract: There is little experimental evidence about the functional significance of arbuscular mycorrhizal fungi (AMF) colonization in providing nutrients for lowland rice. This study was undertaken to examine whether growth and nutrient deficiencies may affect plants benefit from AMF inoculation. Two contrasting rice (Oryza sativa L.) genotypes and two AMF species (Glomus mosseae and G. intraradices) were used in this experiment. Under P starvation, P uptake in the genotype tolerant to P deficiency (Fajr), declined significantly up to 36% (P < 0.05) in response to AMF inoculation, while it enhanced by about 70% (P < 0.01) in susceptible genotype (Shafagh). Under Zn starvation, Zn uptake of Zn-efficient genotype (Shafagh) increased by about 2 fold (P < 0.01), but a reduction of 52% (P < 0.05) was observed in the Zn-inefficient genotype (Fajr) upon mycorrhization. Greater genotypic differences were observed for -P-Zn plants. Our results imply that genotypic difference in responsiveness to inoculation with AMF is attributable to different contribution of mechanisms for increased nutrient uptake in mycorrhizal plants depending on nutrient, nutritional status and nutrient efficiency of genotypes.

Keywords: arbuscular mycorrhizal fungi; Glomus mosseae; Glomus intraradices; Oryza sativa; rice genotypes (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:55:y:2009:i:3:id:319-pse

DOI: 10.17221/319-PSE

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