Gibberellins, like auxins, contribute to the growth of the stem. They play a role in promoting stem elongation, similar to auxins, but they may have distinct mechanisms or target areas within the plant.
How do gibberellins function in the context of plant growth, and how do they compare to auxins in their role in stem growth?
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Gibberellins function in plant growth by promoting stem elongation, seed germination, and flowering. Unlike auxins, which primarily influence cell elongation, gibberellins stimulate cell division and elongation, leading to overall plant height increase. They promote the synthesis of enzymes, such as alpha-amylase, breaking down stored starch into sugars during seed germination. In stem growth, auxins control apical dominance, while gibberellins counteract this, allowing lateral bud growth. Together, auxins and gibberellins orchestrate balanced growth, regulating both cell elongation and division, ensuring optimal plant development and adaptation to environmental conditions.