Auxin-ethylene interactions during tomato fruit development - Su, Liyan
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The interaction between auxin and ethylene are complex and control various processes of plant development, such as root elongation or differentiation of secondary roots. But there are few studies showing the role of interactions between these two hormones during development and maturation of the fruit. The color change in the tomato fruit is a feature of the maturation that is associated with the degradation of the chlorophyll and carotenoid accumulation. In this work, the application of exogenous auxin and ethylene showed the impact of these two hormones in the tomato ripening and in…mehr

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Produktbeschreibung
The interaction between auxin and ethylene are complex and control various processes of plant development, such as root elongation or differentiation of secondary roots. But there are few studies showing the role of interactions between these two hormones during development and maturation of the fruit. The color change in the tomato fruit is a feature of the maturation that is associated with the degradation of the chlorophyll and carotenoid accumulation. In this work, the application of exogenous auxin and ethylene showed the impact of these two hormones in the tomato ripening and in particular the change of fruit color. We have shown that indole-acetic acid (IAA) delays the transition from green to orange / red, while ethylene, supplied as 1-aminocyclopropane-1-carboxylic acid form (ACC), its precursor, accelerated this transition. However the auxin inhibition by p-chlorophenoxy isobutyic acid (PCIB), an auxin antagonist, caused the same effects similar to ethylene. The carotenoid analysis showed that the ACC and PCIB increase the lycopene content and reduced the carotene content while IAA causes the opposite effect.
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Autorenporträt
Liyan Su is a lecturer at School of Biological and Environmental Engineering, Xi¿an University, Xi¿an, China. She earned her PhD in INP ENSA Toulouse, University Toulouse, France. Her current research interests include Fruit Development and Postharvest Physiology.