The Ionome-Hormone-Flavonoid Network Shapes Genotype-Dependent Yield Adaptation in Sugarcane.
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ionome-hormone-flavonoid network
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Ionomic, hormonal, flavonoid, and photosynthetic pigment signatures are associated with yield and sucrose accumulation across six contrasting sugarcane cultivars.
In this study, six contrasting sugarcane cultivars were profiled to investigate how ionomic, hormonal, flavonoid, and photosynthetic pigment signatures are associated with yield and sucrose accumulation.
Potassium, magnesium, and calcium were enriched in high-yield sugarcane cultivars, whereas sodium, boron, and manganese were negatively associated with growth traits.
Multivariate analyses of ionomic data showed that potassium, magnesium, and calcium were consistently enriched in high-yield cultivars, whereas sodium, boron, and manganese were negatively associated with growth traits.
Nutrient balance and metabolite composition strongly correlated with plant height, stem diameter, and sugar concentration.
Canonical correlation analysis confirmed that nutrient balance and metabolite composition strongly correlated with plant height, stem diameter, and sugar concentration.
LT1790 showed suboptimal yield despite the highest levels of growth-promoting hormones, consistent with a trade-off involving a hyperactive defense system.
the LT1790 genotype, despite having the highest levels of these hormones, showed suboptimal yield due to a costly trade-off with its hyperactive defense system
High-yield sugarcane genotypes achieve superior metabolic balance by combining efficient nutrient uptake and robust antioxidant capacity with a favorable hormone profile without triggering a costly constitutive defense system.
Together, these results suggest that high-yield sugarcane genotypes achieve a superior metabolic balance, combining efficient nutrient uptake and robust antioxidant capacity with a favorable hormone profile that promotes strong growth without triggering a costly constitutive defense system.