Related Experiment Video
Updated: Dec 7, 2025
08:52
A Seed Coat Bedding Assay to Genetically Explore In Vitro How the Endosperm Controls Seed Germination in Arabidopsis thaliana
Published on: November 9, 2013
13.9K
Light and abscisic acid interplay in early seedling development.
Premachandran Yadukrishnan1, Sourav Datta1
1Department of Biological Sciences, Indian Institute of Science Education and Research (IISER), Bhopal, Madhya Pradesh, India.
The New Phytologist
|September 28, 2020
Summary
Abscisic acid (ABA) and light signaling interact to control plant growth after germination. This interplay, particularly involving ABSCISIC ACID INSENSITIVE5, is vital for seedling development and adaptation to environmental stress.
Area of Science:
- Plant Biology
- Molecular Plant Science
- Developmental Biology
Background:
- Abscisic acid (ABA) is a key plant hormone regulating germination, seedling development, and stomatal closure, particularly under stress.
- Light signaling pathways interact with ABA to modulate these developmental processes.
- Understanding the ABA-light interplay is crucial for comprehending early plant development.
Purpose of the Study:
- To provide an overview of recent research on the interplay between ABA and light signaling during post-germination seedling development.
- To discuss the molecular mechanisms underlying ABA-light interactions.
- To highlight the role of this cross-talk in crop seedling establishment and adaptation.
Main Methods:
- Literature review of recent investigations on ABA-light interactions.
- Analysis of molecular components involved in ABA and light signaling pathways.
- Discussion of experimental evidence for ABA-light cross-talk.
Main Results:
- ABA and light signaling exhibit multilayered and reciprocal interactions involving photoreceptors, transcription factors, and posttranslational modifiers.
- ABSCISIC ACID INSENSITIVE5 (ABI5) serves as a central convergence point for ABA-light signaling during seedling development.
- ABA-light cross-talk influences seedling adaptation to various light conditions and stress.
Conclusions:
- The intricate ABA-light signaling network is essential for regulating post-germination seedling development and environmental adaptation.
- ABI5 is a critical integrator of these signaling pathways.
- Further research is needed to fully elucidate the mechanisms and implications of ABA-light cross-talk in crops.
Keywords:
ABI5COP1HY5PHYTOCHROME INTERACTING FACTOR (PIF)abiotic stressabscisic acid (ABA)light signallingseedling developmentMore Related Videos
Related Concept Videos
01:57Adaptations that Reduce Water Loss
27.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.6K
02:04Regulation of Transpiration by Stomata
30.5K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
30.5K
02:00Photoreceptors and Plant Responses to Light
27.9K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
27.9K
02:16Light Acquisition
9.2K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.2K
02:33Seed Structure and Early Development of the Sporophyte
30.4K
Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
30.4K
01:25Cell Signaling in Plants
6.0K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
6.0K