Original video: https://youtu.be/iIKChlWac2M
Delivered on: 15 MAY 2023
This video explores the fascinating world of plant hormones, focusing on gibberellins, cytokinins, abscisic acid (ABA), and ethylene. We'll delve into their functions, mechanisms of action, and roles in regulating plant growth, development, and responses to stress. 🌿
Watch part 1 here: https://youtu.be/gpbn_pmsLf4
What you'll learn:
Gibberellins: Discover how gibberellins promote cell elongation, seed germination, and flowering. We'll discuss their discovery, biosynthesis, and agricultural applications.
Cytokinins: Explore the role of cytokinins in cell division, shoot formation, and delaying senescence. We'll examine their use in micropropagation and tissue culture techniques.
Abscisic Acid (ABA): Understand how ABA acts as a growth inhibitor and stress hormone, regulating stomatal closure and seed dormancy. We'll discuss its involvement in plant responses to drought and other environmental challenges.
Ethylene: Learn about ethylene's role in fruit ripening, senescence, and abscission. We'll discuss its effects on flowering, sex expression in certain plants, and its applications in agriculture.
Plant hormones differ from animal hormones in that:
1. Unlike animal hormones, plant hormones are not made in tissues specialized for hormone production. (e.g., sex hormones made in the gonads, human growth hormone - pituitary gland)
2. Unlike animal hormones, plant hormones do not have definite target areas (e.g., auxins can stimulate adventitious root development in a cut shoot, or shoot elongation or apical dominance, or differentiation of vascular tissue, etc.).
General Plant Growth Regulators (PGRs)
▪ Auxin: Indole compounds (indole-3-aceticacid, IAA)
▪ Cytokinin: Adenine derivatives (N6-furfurylamino purine, kinetin),
▪ ABA: Derivatives of carotenoids (abscisic acid);
▪ Gibberellins: Terpenes (gibberellic acid,GA3)
▪ Gases (Ethylene, C2H4).
Keywords: Plant hormones, gibberellins, cytokinins, abscisic acid (ABA), ethylene, plant growth, plant development, seed germination, flowering, senescence, abscission, stress response, agriculture, plant physiology.
Location:
Faculty of Agriculture, Universiti Putra Malaysia
Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor
XPMM+9J Seri Kembangan, Selangor
2.9845517506267742, 101.73803356324866
Attribution 4.0 International — CC BY 4.0 - Creative Commons
Comments