Abstract
Interest on the genus Camelina has recently increased due to the biofuel, or jet fuel, potential of the oil extracted from seeds of the cultivated species Camelina sativa (L.) Crantz. While our knowledge on C. sativa is constantly augmenting, only few studies have been performed on the other species of the genus, which could be a potentially useful material for the genetic improvement of C. sativa. The genus Camelina consists of 11 species, but only six (C. sativa, C. microcarpa, C. alyssum, C. rumelica, C. hispida and C. laxa) could be retrieved from germplasm banks to carry out genomic fingerprinting studies based on the use of the cTBP molecular marker. Each species, with the exception of C. alyssum that is proposed to be a subspecies of C. sativa, shows a distinct cTBP profile resulting from multiple DNA length polymorphisms present in the second intron of the members of the β-tubulin gene family. In contrast to the high level of genetic diversity detected among the six Camelina species, low variability is observed among and within the accessions of the same species, except for C. hispida that is characterized by an intra-accession high number of cTBP polymorphic bands. In addition, cTBP is also able to identify incorrectly classified accessions and provide information on the ploidy level of each species.
Highlights
The genus Camelina belongs to the tribe Camelineae of the Brassicaceae family which contains about 338 genera and over 3700 species distributed throughout the world [1]
With reference to the C. sativa accessions (CAM269, CAM45, CAM46, PI650168, PI650146, PI650142, FF084, FF006, FF004 and PI650167), obtained from the germplasm banks as C. sativa ssp., they all turned out to be of the spring type with the exception of PI650168 and PI650167 that resulted winter types
No difference was substantially detected between the cTBP profiles of the two subspecies C. sativa ssp. pilosa and ssp. sativa, while the consistency of the cTBP banding pattern observed across 46 different C. sativa accessions, collected from different countries, suggests that the PI650167 accession, characterized by a significantly different cTBP profile much more similar to C. microcarpa, has been probably
Summary
The genus Camelina belongs to the tribe Camelineae of the Brassicaceae family which contains about 338 genera and over 3700 species distributed throughout the world [1]. In this last decade, interest in this genus has increased rapidly due to the biofuel or jet fuel potential of the oil extracted from the seeds of Camelina sativa (L.) Crantz [2]-[5]. Several authors report that the biofuel produced from Camelina oil can cut greenhouse gas emis-. Camelina oil contains a high amount of unsaturated fatty acids (more than 90%), low concentration of erucic acid and high levels of natural antioxidants (tocopherols) [10]-[13]
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