| 11. | It functions as a plant growth regulator against the plant hormone auxin.
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| 12. | Auxin plays a central role in PIN protein polarity establishment.
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| 13. | Synthesis in the leaf of a plant hormone called auxin also ceases.
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| 14. | These interactions result in a synergistic increase in auxin efflux.
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| 15. | Auxin accumulates in the cells on the shaded side.
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| 16. | In particular he isolated and purified the universal growth hormone known as auxin.
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| 17. | The most important of these are auxins and cytokinins.
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| 18. | Be cautious : too much auxin can inhibit rather than enhance root formation.
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| 19. | The plant hormones ethylene and auxin are key in fruit set and development.
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| 20. | Home gardeners sometimes spray their tomatoes with an auxin to assure fruit production.
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