Related Experiment Video
Updated: Sep 15, 2025

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
Published on: March 30, 2018
Revising the role of ABA as regulator of flowering and seed development
Anna Collin1, Agata Daszkowska-Golec1
1Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellońska 28, 40-032, Katowice, Poland.
Abstract:
The time of flowering or heading is regulated by environmental cues, mostly by light and temperature. Abscisic acid (ABA), considered the main phytohormone that regulates plant response to abiotic stress, also plays an important role in flowering. ABA can both stimulate and inhibit flowering. In Arabidopsis, ABA accelerates flowering time during drought escape. On the other side, ABA can also repress flowering transition to ensure the time of flowering at the right moment for plant. In cereals, ABA also plays dual role in regulating heading time. Furthermore, some components of the ABA pathway can simultaneously act as positive and negative regulators of heading. ABA is also involved in another important aspect of the plant reproductive stage: seed/grain development. ABA plays positive role in the synthesis of storage proteins and lipids during seed-filling. In contrast, ABA negatively regulates seed size. In this review, we present recent knowledge regarding the complex role of ABA in the regulation of the reproductive stage in Arabidopsis and in the most important crop plants.
More Related Videos
08:52A Seed Coat Bedding Assay to Genetically Explore In Vitro How the Endosperm Controls Seed Germination in Arabidopsis thaliana
Published on: November 9, 2013
06:28Preparation of Intact Tissue for Microscopic Analysis of the Endosperm Cell Layer in Developing and Mature Arabidopsis Seeds
Published on: May 16, 2025
Related Concept Videos
Cell Signaling in Plants
Morphogenesis
Adaptations that Reduce Water Loss
The Angiosperm Life Cycle
Seed Structure and Early Development of the Sporophyte
Regulation of Transpiration by Stomata