Gibberellin

speed as the R value range is within 0.1. However according to other people’s research, Gibberellic acid is suppose to have a positive impact on seeds, speeding up the process of germination. Treatment with high concentrations of Gibberellic acid is effective in overcoming dormancy and cause rapid germination of seed. Tubers are more likely to sprout earlier with around 2 ppm of Gibberellic acid. When there is difficulty with fruit set because of poor pollination, the Gibberellic acid may be used to increase the fruit set. Gibberellic acid is also capable of changing root formation, and many more uses.(John.M.Riley, 1987) The science behind this is that the Gibberellin released by the embryo move towards the aleurone layer, which is its target tissue situated in the endosperm region of the seed, next to the embryo. Gibberellin acts as the inducer, as it allows the enzyme induction of amylase, which is capable of breaking down starch into a sugar to be used in the embryo. The sugar was then used in the plant to synthesise proteins and cause the seed to break out of dormancy.(biology online, 2000 There were many errors in this experiment. A systematic error would be there were a few terminator seeds. This can be avoided as much as possible by picking seeds that look similar to each other; the terminator seed from graph one looked red. A random error, also a system error could be that the seeds were not spread wide enough to reach their growing potential. If two seeds are…

Our first guest speaker at Sainsbury was Alexander Jones, a UC Davis alum. He was mentored by our previous guest speaker, Dr. Ian Furner. His lab is working on hormone dynamic patters as signal indicators. In particular they are focusing on gibberellins (GA) plant hormone. They have made many sub-discoveries and observations on the way, finding that gibberellins increase in the dark, making the plant longer. (I believe plants may have adapted this as a competition mechanism, so that if they are…

Holly Dierksen Biol-181 L Ms. Kringel 4/7/17 Introduction Gibberellic acid is a hormone that is found in plants, that not only controls the plant’s growth and development, but also germination of seeds, lengthening of the internode of the stem, expansion of leaves, floral initiation, and the development of flowers and fruit. It is composed of C19H22O6. Plants are known to only produce a small amount of this particular type of…

16 snap-lock bags were labelled with the name of the group, the name of the seed species (either Rocket Salad or Ferocactus histrix and the GA concentration with 2 bags per concentration. 2 pieces of paper towel were placed inside each bag. 10 seeds that were appropriate to the label of the bag were spread in between the two paper towels. Each towel was wet with 3 mL of GA solution appropriate to the label on the bag. A pipette was used to prevent contaminating the seeds and to prevent from…

Interpretation and Analysis Gibberellins are a tetracyclic diterpenoid compound that stimulates the reorganization of cellular organelles and the synthesis of new proteins such as enzymes. GA exerts its influence in two manners, first by increasing the growth potential of the embryo and second by inducing hydrolytic enzymes. Once a plant releases gibberellins, its cells begin a process of elongation. Since plants are composed of single cells stacked on top of one another, this elongation of…

An example of a plant’s hormone is called gibberellin. Gibberellin (GA) is responsible for the growth and the development of the plants and it’s actually an acid. The role of the (GA) is the process of stem elongation and germination. The stem elongation will stack the cells on top of each other causing the plant to grow. In this experiment, two different strains of the same species of plant will be tested with gibberellin and without it to see the rate at which the height of the plant…

hormones, yet the main ones of scientific focus when discussing plant growth and development are auxin, cytokinins, abscisic acid, ethylene, and gibberellins. Auxin stimulates stem elongation by a process referred to as the acid growth hypothesis. This hypothesis states that auxin will increase the activity of proton pumps in the plasma membrane of plant cells, leading to a lower pH within the cell wall, which in turn weakens cross-linking polysaccharides that hold microfibrils together. This…

be enough water for the seedling to flourish. ABA is also responsible for closing stomata. This response is active in times of drought. The closure of stomata allow the plant to keep as much water inside the plant as possible without letting it evaporate into the environment. Gibberellins- Gibberellins is another growth hormone found in plants. It is produced in meristem of both stems and roots, young leaves and developing seeds. Similarly to Auxin, Gibberellins stimulate stem elongation.…

The intention of this experiment was to find out which of the two hormones, Gibberellic Acid or Brassinosteroids, would have the greatest effect on growth among our test subjects, the organism Arabidopsis thaliana. The results of this experiment were not as we hypothesized. Gibberellic acid proved superior in cell elongation, which can be observed by way of plant height. This was a rejection to our original hypothesis, as well as a contradiction to the study: “Interactions between…

In order to exam the effects of auxin, gibberellins and abscisic acid on plant growth we generated an experiment to track the growth, specifically height of a corn seed. To begin, obtain two small planters, each with six individual compartments. Label one planter A and the other B. On the outside of the two small planters label five of the six compartments IAA, NAA, GA, ABA, and Control. The sixth compartment will not be used. These labels respectively correspond to the hormone treatment that…