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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of Sugarcane Genotype and Soil Moisture Level on the Arbuscular Mycorrhizal Fungi Community

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Author(s):
da Silva Barros, Timoteo Herculino [1] ; de Araujo Pereira, Arthur Prudencio [2] ; de Souza, Adijailton Jose [2] ; Ribeiro, Nathalia Lopes [1] ; Bran Nogueira Cardoso, Elke Jurandy [2] ; Coelho, Rubens Duarte [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Agr Syst Engn Dept, Piracicaba - Brazil
[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Soil Sci Dept, Piracicaba - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SUGAR TECH; v. 21, n. 3, p. 505-513, JUN 2019.
Web of Science Citations: 1
Abstract

The relationship between sugarcane genotype and symbiosis with arbuscular mycorrhizal fungi (AMF) remains poorly understood, especially regarding different soil moisture levels. Our objective was to evaluate the effect of soil moisture on the AMF community structure, spore abundance and colonization ratio in a plantation with eight sugarcane genotypes (CTC15, CTC17, RB867515, RB92579, RB931011, RB966928, IAC5000 and NCo376). The study was carried out in Piracicaba, SAo Paulo and Brazil in an experimental plot setup in a randomized block design, with three replicates (blocks). We collected soil and root samples in a greenhouse experiment under two water replenishment levels: 100 and 50% of soil moisture at field capacity ((FC)). We extracted spores and assessed the AMF root colonization ratio by using specific dyes and determining the percentage of root length colonized in the different sugarcane genotypes. In addition, we evaluated the AMF community structure by PCR and denaturing gradient gel electrophoresis. In general, the spore abundance and root colonization ratio were higher in all varieties at 100% (FC). However, the IAC5000 and RB966928 genotypes showed higher colonization levels even at 50% (FC). The AMF community structure was also influenced by soil water levels with group separations across 100 and 50% (FC). Sugarcane productivity as measured by stalk plus root dry mass was positively correlated with AMF colonization rates in 100% (FC). Thus, the water replenishment levels used in sugarcane cultivation can influence spore abundance, colonization ratios and AMF community structure in the soil. The selection of a sugarcane genotype with greater AMF association under low water replenishment levels may be a primary factor in growing sugarcane in areas with low water availability. (AU)

FAPESP's process: 12/50083-7 - Water productivity into biomass and energy for Brazilian sugar cane varieties as a function of soil water availability: experimentation and simulation
Grantee:Rubens Duarte Coelho
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Research Partnership for Technological Innovation (PITE)