Metabolic changes in the developing sugarcane culm associated with high yield and early high sugar content

Plant Direct
Virginie PerloRobert J Henry

Abstract

Sugarcane, with its exceptional biomass and sugar yield, has a high potential for the production of bioenergy, biomaterials, and high-value products. Currently, the link between metabolic changes in the developing internodes in sugarcane and final yield and sugar characteristics is not well understood. In order to investigate these correlations, 1,440 internodes were collected and combined to generate a set of 360 samples across 24 sugarcane cultivars at five different developmental stages. A combination of metabolome profiling and trait co-expression analyses were conducted to reveal the interaction between the metabolome and essential agronomic traits, including Brix (total sugar), polarity (sucrose content), purity (sucrose purity), commercially extractable sucrose, fiber, and tons of cane per hectare (TCH). Metabolomic analysis revealed significant differences in metabolic patterns mainly correlated with developmental stage. Hierarchical clustering of genotypes and traits revealed clear partitioning of groups of early-, mid- and late-season sugar content, with secondary segregation by the yield trait, TCH, and fiber content. The study identified co-expression and specific metabolites associated with metabolic pathways corre...Continue Reading

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Software Mentioned

ggplot2
plyr
WGCNA R
MetaboAnalyst
Ex
R
WGCNA R package

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