Related Experiment Video
Updated: Mar 27, 2026
07:07
Lung microRNA Profiling Across the Estrous Cycle in Ozone-exposed Mice
Published on: January 7, 2019
6.6K
Integrative linkage mapping and transcriptomic profiling uncover ozone-response modules in a peri-urban forest tree
Xochitl Granados-Aguilar1,2, Verónica Reyes-Galindo1,3, Gustavo I Giles-Pérez1
1Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, CDMX 04510, Mexico.
G3 (Bethesda, Md.)
|March 26, 2026
Summary
Scientists mapped genes in Abies religiosa to understand ozone tolerance in Mexican forests. This research identifies key genes and pathways for managing conifer resistance to air pollution.
Area of Science:
- Genomics
- Plant Science
- Ecology
Background:
- Abies religiosa forests in Mexico are vital for ecosystem services but threatened by ozone pollution.
- Ozone exposure causes premature senescence and decline in these important peri-urban forests.
Purpose of the Study:
- To construct a saturated linkage map for Abies religiosa.
- To identify genes associated with ozone tolerance and understand their regulation.
Main Methods:
- Genotyping of 182 megagametophytes for 9,702 single nucleotide polymorphisms (SNPs).
- Construction of a 12-linkage group (LG) map spanning 1,567.88 cM.
- Differential gene expression and co-expression analyses in trees exposed to varying ozone levels.
Main Results:
- A saturated linkage map with 12 LGs was generated, locating 5,881 coding genes.
- Eight genes showed differential expression with increased ozone levels.
- Co-expression analysis revealed functional gene clustering related to ozone tolerance, particularly in LGs 5, 8, and 10.
Conclusions:
- Identified novel metabolic and defense pathways involved in conifer ozone tolerance.
- Provides a foundation for developing molecular strategies to enhance ozone resistance in peri-urban Abies religiosa forests.
Related Concept Videos
01:09Microbe-Plant Interactions
45
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
45
02:04Regulation of Transpiration by Stomata
32.2K
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.
32.2K
01:20Gene-Environment Interactions
1.6K
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
1.6K
02:50Transgenic Plants
9.1K
Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
9.1K
01:26Oxygenic Photosynthesis
957
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...
957
01:27Constitutive and Regulated Gene Expression
1.7K
Gene expression in prokaryotes is governed by constitutive and regulated systems, allowing cells to balance the production of essential proteins with adaptive responses to environmental changes.Constitutive Gene ExpressionConstitutive, or housekeeping, genes are continuously expressed as they encode proteins vital for fundamental cellular processes. These include enzymes for glycolysis, ribosomal components for protein synthesis, and proteins involved in DNA replication. Their constant...
1.7K