Discussion
5 October 2023
Linum usitatissimum AccD Enhances Seed Fatty Acid Accumulation and Tolerance to Environmental Stresses during Seed Germination in Arabidopsis thaliana
Fatty Acids
Salt stress
seed germination
LuAccD
mannitol stress
Related publication: 10.3390/plants12173100
The authors investigated an accD-like gene in Flax (Linum usitatissimum) that is believed to have undergone pseudogenization.
1. The accD-like gene studied by the authors differs from the accD gene encoded in Flax's chloroplast DNA.
[https://www.ncbi.nlm.nih.gov/protein/1284805329]
2. The authors identified the accD-like gene from a database of genes and proteins encoded in nuclear DNA.
3. The amino acid sequence of the accD-like gene is missing the zinc-binding domain at its N-terminus.
From the above, I believe that this accD-like gene arose from the migration of the chloroplast's accD gene to the nuclear DNA, subsequently becoming a pseudogene.
The authors overexpressed this pseudogenized accD-like gene in the nucleus, rather than in the chloroplasts. Consequently, changes such as fatty acid accumulation were observed. This is truly a remarkable phenomenon! If this study is accurate, I look forward to a deeper understanding of the underlying mechanism.
1. The accD-like gene studied by the authors differs from the accD gene encoded in Flax's chloroplast DNA.
[https://www.ncbi.nlm.nih.gov/protein/1284805329]
2. The authors identified the accD-like gene from a database of genes and proteins encoded in nuclear DNA.
3. The amino acid sequence of the accD-like gene is missing the zinc-binding domain at its N-terminus.
From the above, I believe that this accD-like gene arose from the migration of the chloroplast's accD gene to the nuclear DNA, subsequently becoming a pseudogene.
The authors overexpressed this pseudogenized accD-like gene in the nucleus, rather than in the chloroplasts. Consequently, changes such as fatty acid accumulation were observed. This is truly a remarkable phenomenon! If this study is accurate, I look forward to a deeper understanding of the underlying mechanism.
2
