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Updated: Jun 4, 2026
08:10
Environmentally Induced Heritable Changes in Flax
Published on: January 26, 2011
Environmentally induced heritable changes in flax.
Cory Johnson1, Tiffanie Moss, Christopher Cullis
1Department of Biology, Case Western Reserve University, USA.
Journal of Visualized Experiments : Jove
|February 11, 2011
Summary
Flax plants exhibit heritable genomic and phenotypic changes in response to nutrient stress, involving the insertion of a mobile element (LIS-1). These stress-induced modifications in flax (Linum usitatissimum) demonstrate adaptive potential.
Area of Science:
- Plant genetics and epigenetics
- Molecular biology
- Agricultural science
Background:
- Nutrient stress can induce heritable genomic and phenotypic variations in certain flax (Linum usitatissimum) varieties.
- The Stormont Cirrus (Pl) flax variety can become stably modified into large or small genotrophs under high or low nutrient conditions, respectively.
Purpose of the Study:
- To investigate the genomic and phenotypic changes in flax (Linum usitatissimum) under varying nutrient conditions.
- To identify the role of the insertion element LIS-1 in stress-induced heritable modifications.
Main Methods:
- Cultivating flax (Linum usitatissimum) under control, high, and low nutrient conditions.
- Analyzing DNA for the presence and transmission of the LIS-1 insertion element.
- Analyzing RNA to identify expression variations linked to growth environments and LIS-1 presence.
Main Results:
- Flax (Linum usitatissimum) grown under low nutrients showed stable inheritance of the LIS-1 insertion, while high nutrients resulted in transient insertions.
- Genomic modifications, including LIS-1 insertion, were associated with heritable phenotypic variations and altered growth performance.
- The LIS-1 insertion element appears to be under positive selection in response to nutrient stress.
Conclusions:
- Nutrient stress can trigger adaptive genomic changes in flax (Linum usitatissimum) via mobile genetic elements like LIS-1.
- These stress-induced modifications are heritable and can lead to genotypic and phenotypic differentiation.
- Flax (Linum usitatissimum) demonstrates a remarkable capacity for epigenetic and genetic adaptation to environmental challenges.
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