| 31. | The protein may play a role in cell growth and differentiation and act as a negative growth regulator.
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| 32. | Ask your nurseryman if there is a plant-growth regulator that could be used on your species of tree.
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| 33. | But even growth regulators have drawbacks.
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| 34. | However, more recent research suggests that wood fibre can have detrimental affects on " plant growth regulators ".
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| 35. | Plant hormones, known as plant growth regulators ( PGRs ) or phytohormones, are chemicals that regulate a plant's growth.
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| 36. | Yki also activates expression of the " bantam " microRNA, a positive growth regulator that specifically affects cell number.
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| 37. | In contrast to Ras, ARHI works as an inhibitor for cell growth, thus functioning as a negative growth regulator.
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| 38. | Classified as a pesticide, it was a plant-growth regulator used on apples to slow ripening and prolong shelf life.
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| 39. | Growth regulators ( IAA ) are thought to have a role in cell enlargement since they increases cell wall plasticity.
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| 40. | However, molecules of IAA are chemically labile in aqueous solution, so it is not used commercially as a plant growth regulator.
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