Characterization of chitosan iodate complex and its role on iodine uptake in tomato (Lycopersicon esculentum)
Keywords:
Biofortification, Chitosan, Iodine, Mobility, StabilityAbstract
The bioavailability of iodine is influenced by the various types of iodine found in sediment as well as thetime of iodine administration. The prevalence of iodine deficit is extensive; nevertheless, the bioavailabilityof iodine may be constrained due to the volatilization of iodine that is lost from the soil, leading to theoccurrence of iodine shortage. The use of agronomic practises for iodine biofortification is a viable approachto mitigate iodine deficiency at a worldwide level. A multitude of research has been conducted to investigatethe process by which plants uptake iodine from the soil. However, soil iodine stability is poorly understood.This study examined the relationship between tomato fruit iodine absorption and chitosan iodate complexformation. This evaluation encompassed several origins of chitosan and potassium iodate, both individuallyand in diverse combinations. The investigation was carried out through main and residual crop trials. Thestudy found that added potassium iodate and chitosan complex increased iodine levels in the primary crop’sleaves (24 ppm) and fruits (1 ppm). This combination also conserved residual crop iodine. Further thecharacterization results also revealed that there is a strong interaction between chitosan and iodate whichprevent its leaching and volatilization losses. This work adds to the knowledge of soil iodine mobility andbehaviour, especially when applied alone or with chitosan.References
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