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AUXIN [ˈôksən]

NOUN
auxin (noun) · auxins (plural noun)

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See also: Auxin

1. Auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems

2. Auxins also play a role in cell division and differentiation, in fruit development, in the formation of roots from cuttings, in the inhibition of lateral branching, and in leaf abscission.

3. An Auxin is a plant hormone derived from the amino acid tryptophan

4. An Auxin may be one of many molecules, but all Auxin molecules are involved in some sort of cellular regulation

5. Auxin molecules are one of five major types of plant hormone

6. Background: The phytohormone Auxin is critical for plant growth and orchestrates many developmental processes

7. Scope: This review considers the complex array of mechanisms plants use to control Auxin levels, the movement of Auxin through the plant, the emerging view of Auxin-signalling mechanisms, and several interactions between Auxin and other phytohormones.

8. Auxin (indole-3-acetic acid or IAA) is a phytohormone that has been shown to control cell identity and cell expansion, and is major player in the regulation of root growth

9. Auxin diffuses freely inside the cells and cell walls and is thought to be actively transported between cells by membrane-bound specialized proteins from the PIN family.

10. Auxin is the signaling molecule responsible for phototropism and it is an important factor regulating vascular tissue differentiation, leaf blade expansion, maintenance of tissue polarity, and the inhibition of lateral bud development.

11. Stimulating root branching – When an Auxin is applied to a cut stem, the stem will initiate roots at the cut

12. Promoting fruit development – Auxins in the flower promote maturation of the ovary wall and promote steps in the full development of the fruit

13. Auxins can be produced naturally (by …

14. Indole-3-acetic acid (IAA), the main Auxin in higher plants, has profound effects on plant growth and development

15. Although the genes and biochemical reactions for Auxin biosynthesis in some plant pathogens are well under …

16. Auxin herbicides are a huge family of herbicides that began with 2,4-D in the 1940’s

17. Over the next 70 years, Auxin herbicides expanded to include the sub-families of phenoxy, benzoic acid and pyridines

18. 2) Pre-recorded video: 2021 Auxin Herbicides-Best Management Practices

19. Charlie Cahoon and Wesley Everman will provide County Agricultural Agents with a pre-recorded video of the 2021 Auxin Herbicides-Best Management Training

20. Auxin also plays a role in the abscission of leaves and fruits

21. Young leaves and fruits produce Auxin and so long as they do so, they remain attached to the stem

22. When the level of Auxin declines, a special layer of cells — the abscission layer — forms at the base of the petiole or fruit stalk

23. Auxin is a plant hormone and influences cell growth rates by changing the pattern of gene expression with a plant’s cells

24. Auxin’s mechanism of action is different in shoots and roots as different gene pathways are activated in each tissue

25. Auxin definition, a class of substances that in minute amounts regulate or modify the growth of plants, especially root formation, bud growth, and fruit and leaf drop

26. Auxin is a naturally occurring plant hormone

27. The term Auxin is derived from the Greek word auxein, which means "to grow."While many synthetic Auxins are used as herbicides, indole-3-acetic acid (IAA) is the only naturally occurring Auxin that shows physiological activity (figure \(\PageIndex{a}\)).Auxin is synthesized in apical meristems, young leaves, and developing seeds.

28. Auxin regulates almost every aspect of plant growth and development and is perceived by the TIR1/AFB Auxin co‐receptor proteins differentially acting in concert with specific Aux/IAA transcriptional repressors

29. Auxin: [noun] any of various usually acidic organic substances that promote cell elongation in plant shoots and usually regulate other growth processes (such as root initiation): such as

30. What does Auxin mean? A plant hormone, esp

31. Apparently, I have been writing reviews about Auxin for 20 years (Leyser, 1997), and certainly I have been in very good company.Auxin is a much-written-about molecule

32. Entire books are dedicated to it (Estelle et al., 2011).From all these column inches, there is a clear consensus that Auxin is extremely important, that it is involved in virtually every aspect of plant biology

33. The plant hormone Auxin acts as a versatile trigger in many developmental processes, including the regulation of root growth, but its role in the control of the stem cell activity remains largely unclear

34. Here we show that local Auxin levels, determined by biosynthesis and intercellular transport

35. Auxin is a indole radicle plant hormone which is produced by growing tip of a coleoptile and influence growth rate of the cells and also encourages the length of roots and stems of plants

36. Indole-3-acetic acid (IAA) is the key plant hormone of the Auxin class, which controls all processes of plant growth and development

37. Indole acetic acid (IAA) is the principal native Auxin of higher plants

38. In indole Auxins, the ring is indole (i.e., benzopyrrole) and the side chain is a fatty acid attached to carbon 3 of pyrrole part of indole.

39. This is an annual training and certifies attendees to use approved Auxin formulations for the 2021 growing season, said Peter Dotray, Ph.D., Texas A&M AgriLife Research weed scientist, Lubbock

40. Auxin Solar, founded in 2008, is an American manufacturer of solar panels and solar mounting rack systems and a system developer of solar power plants

41. However, it is possible that Auxin binds to the TIR1-Aux/IAA interface, or that domain II of the Aux/IAA protein achieves specificity for Auxin binding only when complexed with TIR1

42. It remains to be demonstrated whether TIR1 can bind Auxin in the absence of Aux/IAA proteins

43. If TIR1 is an Auxin receptor, then why is the tir1 phenotype so weak?

44. KEY WORDS: Auxin, Cellular response, Transcriptional response Introduction Auxin is a plant hormone that has a role in most aspects of plant growthanddevelopment

45. Fournative Auxinshave been identified in plants, with indole-3-acetic acid (IAA) being the most abundant form

46. Auxin distribution within plant tissues is regulated by

47. Auxin synonyms, Auxin pronunciation, Auxin translation, English dictionary definition of Auxin

48. Auxin is required for many aspects of plant development

49. Local Auxin maxima and gradients arise as a result of local Auxin metabolism and, predominantly, from directional cell-to-cell transport

50. In this primer, we discuss how the coordinated activity of several Auxin influx and efflux systems, which transport Auxin

51. Cellular Auxin levels results from complex interplay between Auxin synthesis, degradation and (de)conjugation to/from sugars and amino acids (Ljung et al., 2005)

52. The details of Auxin biosynthesis and its regulation remain largely elusive, but it is known that both tryptophan and indole can serve as precursors (Cohen et al., 2003).

53. Auxins control the growth of plants by promoting cell division and causing elongation in plant cells (the cells get longer).

54. For more information, log on to-http://shomusbiology.weebly.com/Download the study materials here-http://shomusbiology.weebly.com/bio-materials.htmlAuxins de

55. Auxin Regulates Apical Dominance • Growing apical bud inhibits the lateral bud growth • In 1920, Skog and Thimann performed an experiment on bean and result showed that outgrowth of auxillary bud is inhibited by Auxin that is transported basipetally • The Auxin content of bud increases by decapitation of shoot apex • Auxin control

56. Auxin Regulates Suc Transport during Petal Abscission

57. To investigate the roles of Suc and Auxin in rose petal abscission, we chose an abscission-prone rose cultivar (Rosa hybrida cv Golden Shower) and divided the process of flower opening and abscission into 6 stages (Gao et al., 2016; Supplemental Figure 1).As determined by scanning electron microscopy, petal AZ cells appeared to …

58. The potent natural Auxin, 3-indoleacetic acid (IAA), is available in both acid and salt form

59. Synthetic Auxins, such as 1-naphthaleneacetic acid (NAA) and 2-4

60. Auxin is an essential molecule that controls almost every aspect of plant development

61. Although the core signaling components that control Auxin response are well characterized, the precise mechanisms enabling specific responses are not yet fully understood

62. Considering the significance of Auxin in plant growth and its potential applications, deciphering further aspects of its biology is an

63. Auxin determines how and where a plant grows, both in the shoots and the roots

64. Moreover, Auxin is important in phototropism as well because Auxin moves to the darker side of the plant and causes for cell division

65. Other than these functions, Auxin is responsible for stimulating root development, promoting fruit development, secondary growth of the plants,

66. What is Auxin? Auxin is the first group of plant hormones that was discovered by scientists in 1926

67. Auxin is mainly present in the form of indole acetic acid (IAA) in plants

68. However, there are other chemical compounds also found in plants that exhibit functions similar to Auxins.

69. Auxin stimulates plant cells to elongate, and the apical meristem of a plant is one of the main places that Auxin is produced

70. This regenerative capacity is controlled in part by Auxin, the most promiscuous plant hormone controlling organogenesis and tissue patterning

71. We show that stem cell death diverges the Auxin flow, much like rocks in a stream, resulting in an Auxin accumulation in the tissues surrounding the wound.

72. Auxin turnover is also modulated by salt stress by inhibiting DAO and inducing some GH3 genes, thus modifying phytohormone availability

73. (B) Schematic representation of Auxin fluxes and signaling in the cell under salt stress

74. Auxin influx is modulated by AUX/LAX proteins, while efflux of Auxin is modulated mainly by PIN proteins.

75. An Auxin, indole-3-acetic acid (IAA) was the first plant hormone identified

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FAQ?

What does the name auxin mean?

Auxin. meaning. ôk'sĭn. (0) Any of several plant hormones that regulate various functions, including cell elongation. noun. 0.

What is the meaning of auxin?

Medical Definition of auxin. : an organic substance that is able in low concentrations to promote elongation of plant shoots and usually to control other specific growth effects broadly : plant hormone. More from Merriam-Webster on auxin.

What is the function of auxin?

The main function of auxin is to help plants grow. Auxin stimulates plant cells to elongate, and the apical meristem of a plant is one of the main places that auxin is produced. This makes sense because the apical meristem is also the location that all the other parts of a plant grow from - the stem, leaves, and flowers.

How does auxin work?

How Auxins Work. Auxins stimulate the initiation of roots and the growth of lateral roots and causes root cells to grow longer. It also helps the formation of xylem and phloem. Xylem are cells that transport water and nutrients from the soil into the roots.

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