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Orbitide Composition of the Flax Core Collection (FCC).
Peta-Gaye Gillian Burnett, Clara Marisa Olivia, Denis Paskal Okinyo-Owiti
1Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University , Guangzhou, Guangdong 510632, China.
Journal of Agricultural and Food Chemistry
|June 4, 2016
Summary
Flax (Linum usitatissimum L.) seed orbitide content varied by location, with Morden-grown seeds showing higher levels. Specific orbitide types (1, 3, 8) were more abundant than others (6, 13, 17) in most flax accessions.
Area of Science:
- Agricultural Science
- Plant Biochemistry
- Genetics
Background:
- Flax (Linum usitatissimum L.) is a vital crop with diverse chemical constituents.
- Orbitides are a class of compounds found in flax seeds with potential biological activities.
- Understanding orbitide variation is crucial for flax breeding and utilization.
Purpose of the Study:
- To analyze the orbitide content and composition in a flax core collection (FCC).
- To investigate the impact of regeneration location (Saskatoon vs. Morden) on orbitide profiles.
- To identify flax accessions with distinct orbitide expression patterns.
Main Methods:
- Regeneration of 391 flax accessions in Saskatoon and Morden in 2009.
- High-throughput analysis of seed orbitide content and composition using high-performance liquid chromatography with diode array detection (HPLC-DAD).
- Quantification of specific orbitides encoded by contigs AFSQ01016651.1 and AFSQ01025165.1.
Main Results:
- Seed orbitide content was higher in plants regenerated in Morden compared to Saskatoon.
- Orbitides encoded by AFSQ01016651.1 (1, 3, 8) were generally more abundant than those encoded by AFSQ01025165.1 (6, 13, 17).
- Cultivar 'Primus' and accession CN 101580 showed the highest ratio of [1,3,8] to [6,13,17] orbitides, while 'Hollandia' and 'Z 11637' showed the lowest.
Conclusions:
- Regeneration environment significantly influences flax seed orbitide accumulation.
- Specific orbitide profiles vary considerably among flax accessions, with potential for targeted breeding.
- Orbitide expression did not correlate with other flax morphological or chemical traits, suggesting independent regulation.
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