In mature plants, ethylene influences leaf abscission, flower senescence, and root initiation. In seedlings, it promotes the triple response, which includes shortening of the hypocotyl, thickening of the stem, and exaggeration of the apical hook, helping the seedling push through soil.
Ethylene Function in Plant Growth Regulation and Hormonal Interactions
Future Perspectives and Research Frontiers. Cross-talk between ethylene and brassinosteroids or gibberellins fine-tunes growth adjustments, ensuring that developmental decisions balance resource allocation and environmental cues.
In the nursery industry, it is employed to induce flowering in species like poinsettia and kalanchoe. Growers use ethylene gas or ethephon sprays to synchronize fruit ripening for market readiness.
Ethylene Function in Plant Growth Regulation and Hormonal Interactions
Biochemical Pathway and Perception The biosynthesis of ethylene begins with the amino acid methionine, which is converted through a series of enzymatic steps involving SAM synthetase and ACC synthase to produce 1-aminocyclopropane-1-carboxylic acid (ACC). Interaction with Other Hormones Ethylene does not act in isolation; its function is deeply integrated with other hormonal pathways.
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