Plant growth and Auxins

Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor), Jen Moreau, MaxScience

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Auxins

Auxins are plant growth hormones. They work by making cells grow longer, and divide more. A growth reaction to a stimulus is called a tropism, and different prefixes denote what type of stimulus is involved.

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  • Photo- (light)
  • Geo- (gravity)
  • Hydro- (water)

Below is a diagram showing how a phototropism causes the plant to grow in the direction of the sun

how a phototropism causes a plant to grow towards the sun

The auxin collects on the dark side of the shoot; therefore, more growth will occur on this side of the plant and the shoot will gradually lean toward the sun. Now it can now make best use of the environment. This effect can be observed with house plants. If you have a plant in a room with only one window, it will often develop more on the side that faces the window.

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Commercial Applications

Plant hormones have many commercial uses relating to agriculture and flower growing. Some are:

  1. 1
    Roots
    .
    A cutting from a plant can be taken, for example a branch. If a bit of auxin is applied to the base and this is put in soil, it will grow roots and a clone is made.
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  2. 2
    Fruits
    .
    They can be used to slow down the process of ripening so they arrive fresh after transport.
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  3. 3
    Weeds
    .
    As well as encouraging life, auxin can also be used to destroy it. Applying auxins can make weeds grow too fast and therefore die.
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Questions and Answers

How to use indole acetic acid on tomato productivity and what are the treatment that I will use?

What is the effect of IAA on the fruits of tomato. what is the important of IAA. I NEED THIS IN MY RESEARCH PROPOSAL,,SO I WANT TO GET SOME INFORMATION TO OTHER PERSON SO THAT I CAN FINISH OR ANSWER MY ASSIGNMENT IN MY STUDIES THANK YOU. I have tried: I TRY TO RESEARCH SOME INFORMATION TO THE PAST THESES BUT THE SAME I CAN NOT GET THE EXACT INFORMATION. I think it was caused by: I THINK THE CAUSED IS I WILL USE THIS FOR MY THESIS WHEN I'm IN 4RTH YEAR STUDENT

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The connections between indole-3-acidic corrosive (IAA) diffusing out of the foods grown from the ground among organic products, and amongst leafy foods tips were researched utilizing apple (Malus domestica Borkh. cv. Jonagold) and tomato (Lycopersicon esculentum Mill.) plants. Predominant organic products dependably had more diffusible IAA than subordinated, hindered natural products. Modifications in predominance – by natural product or shoot tip evacuation – prompted noteworthy changes in diffusible IAA by the rest of the organic products. This change could be distinguished one day after predominance alteration. It is recommended that diffusible IAA is included in the correlative flag directing predominance connection amongst organic products, and amongst foods grown from the ground in apple and tomato.

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Why is IAA Important? IAA has a wide range of impacts, for example, actuating cell prolongation and cell division with every single consequent outcome for plant development and improvement. On a bigger scale, IAA fills in as flagging particle important for the advancement of plant organs and coordination of development.

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Plant growth and Auxins. (2017). In ScienceAid. Retrieved Jul 20, 2017, from https://scienceaid.net/biology/plants/plantgrowth.html

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Article Info

Categories : Plants

Recent edits by: Jen Moreau, Taylor (ScienceAid Editor), Jamie (ScienceAid Editor)

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