Related Experiment Video
Updated: May 10, 2026

02:55
Arteriovenous Metabolomics to Measure In Vivo Metabolite Exchange in Brown Adipose Tissue
Published on: October 6, 2023
[Abscisic acid metabolism]
Kamil Frankowski1, Emilia Wilmowicz, Agata Kućko
1Katedra Fizjologii Roślin i Biotechnologii, Uniwersytet Mikołaja Kopernika, Toruń, Poland.
Postepy Biochemii
|July 5, 2013
Summary
Abscisic acid (ABA) is a vital plant hormone regulating growth, development, and stress responses. Modern molecular biology has identified key genes in ABA metabolism, advancing our understanding of its crucial role.
Area of Science:
- Plant Physiology
- Molecular Biology
- Biochemistry
Context:
- Abscisic acid (ABA) is a critical plant hormone governing essential processes like seed development, germination, stomatal function, flowering, and stress adaptation.
- Maintaining optimal endogenous ABA levels is crucial for regulating these physiological events.
- Tissue ABA concentration results from a dynamic balance between biosynthesis, oxidative degradation, and inactivation pathways.
Purpose:
- To review the advancements in understanding abscisic acid metabolism.
- To highlight the identification of genes involved in ABA metabolic regulation through modern molecular biology techniques.
- To elucidate the mechanisms underlying ABA's action and its metabolic control.
Summary:
- Significant progress has been made in identifying genes responsible for enzymes in abscisic acid (ABA) metabolism.
- Modern molecular biology tools have been instrumental in uncovering the genetic basis of ABA metabolic regulation.
- This research contributes to a deeper comprehension of how ABA levels are controlled and how the hormone functions in plants.
Impact:
- Enhanced understanding of plant hormone regulation.
- Provides a foundation for future research into ABA signaling and metabolic engineering.
- Potential applications in improving crop resilience and yield through targeted manipulation of ABA pathways.
Related Concept Videos
Amino Acid Biosynthetic Pathways
Amino acid biosynthesis is essential for cell growth, protein synthesis, and metabolic regulation. Cells generate essential and non-essential amino acids from metabolic intermediates to sustain vital biological functions. These intermediates originate from key metabolic pathways: glycolysis, the tricarboxylic acid (TCA) cycle, and the pentose phosphate pathway. Important precursors include α-ketoglutarate, pyruvate, oxaloacetate, phosphoenolpyruvate, and erythrose-4-phosphate, which provide...
Respiration Pathways
Cellular respiration is a fundamental metabolic process that enables organisms to generate energy from organic molecules. One of its central pathways is the tricarboxylic acid (TCA) cycle, also known as the Krebs cycle, which plays a crucial role in energy production and biosynthetic processes.Conversion of Pyruvate to Acetyl-CoAThe pyruvate generated from glycolysis undergoes oxidative decarboxylation by the pyruvate dehydrogenase complex, producing acetyl-CoA, one molecule of NADH, and one...
Lipid Catabolism
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
Overview of Fatty Acid Metabolism
Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Sulfur Assimilation
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to become...
Amino Acid Catabolism
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
