Abstract
The paper presents a study of the phenomena that take place at membrane system interfaces in the process of indole-3-acetic acid (IAA) transport. The results were obtained in a bulk liquid membrane system using trioctylamine, tributylphosphate, trioctilphosphine oxide as carriers in chloroform. The main equilibriums that take place at the interface feed phase% membrane phase were identified and the diffusion coefficient of the indole-3-acetic acid complex (DLS) and the extraction constant (Kex) were assessed. The influence of the chemical potential gradient on these parameters was considered.
Highlights
Phytohormones are substances with a very important role in plant regulatory processes such as cell division, growth and reproduction of the plant [1, 2]
The presence of indole 3-acetic acid (IAA) and salicylic acid inhibited the transport of cadmium from the root to the shoots of young saplings by modifying the antioxidant defensive system, preventing cadmium damage [9]
IAA is a compound with moderate toxicity according to the European Chemicals Agency (ECHA), irritating to the eye and skin
Summary
Phytohormones are substances with a very important role in plant regulatory processes such as cell division, growth and reproduction of the plant [1, 2]. A representative phytohormone of the auxin class is indole 3-acetic acid (IAA). IAA is found into various plant development stages, being a natural plant phytohormon produced by the root, sprouts or apicultural meristems. IAA can influence both positively and negatively the growth and development of the plant in cell division, elongation or differentiation processes. The treatment of plants with IAA in combination with EDTA may have adverse effects on health due to the accumulation of Pb in leaves, for example in the treatment of alfalfa [8]. These negative effects can be reduced by treating the plants with a mixture of IAA and salicylic acid. An important feature of the liquid membranes is that the extraction step and the stripping step take place in the same system at the same time
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