The use of conventional and molecular genetics to produce new diversity in seed oil composition for the use of plant breeders-progress, problems and future prospects

Murphy, Denis J.

doi:10.1007/bf00023977

Cited by 18 publications

(3 citation statements)

References 17 publications

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“…The seed oil content from the B. napus landraces was significantly lower than that from the commercial varieties, whereas no significant differences were found between the landraces and the commercial varieties in B. rapa . The genotypes evaluated in this work showed values for oil content similar to those found on cultivars of the major Brassica oilseed crops ( B. napus, B. rapa, B. carinata, and B. juncea ), with an average oil content between 45% and 50% [30,39], even though the Brassica germplasm from northwestern Spain is not grown as an oilseed crop. Since only one datum per population was obtained, mean oil content comparisons among populations are not reported.…”

Section: Resultsmentioning

confidence: 57%

Seed Oil Quality of Brassica napus and Brassica rapa Germplasm from Northwestern Spain

Cartea

Bailón

Padilla

et al. 2019

Foods

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The seed oil content and the fatty acid composition of a germplasm collection of Brassica napus and Brassica rapa currently grown in Galicia (northwestern Spain) were evaluated in order to identify potentially interesting genotypes and to assess their suitability as oilseed crops for either edible or industrial purposes. The seeds of the B. rapa landraces had higher oil content (mean 47.3%) than those of B. napus (mean 42.8%). The landraces of both species showed a similar fatty acid profile (12% oleic acid, 13% linoleic acid, 8–9% linolenic acid, 8–9% eicosenoic acid, and 50–51% erucic acid). They were very high in erucic acid content, which is nutritionally undesirable in a vegetable oil, and very low in oleic and linoleic acid contents. Therefore, they could be used for industrial purposes but not as edible oil. The erucic acid content ranged from 42% to 54% of the total fatty acid composition with an average value of 50% in the B. napus landraces whereas in B. rapa, it ranged from 43% to 57%, with an average value of 51%. Considering the seed oil and the erucic acid content together, three varieties within the B. napus collection and two varieties within the B. rapa one seem to be the most promising genotypes for industrial purposes.

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Section: Resultsmentioning

confidence: 57%

Seed Oil Quality of Brassica napus and Brassica rapa Germplasm from Northwestern Spain

Cartea

Bailón

Padilla

et al. 2019

Foods

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“…9,43 Different species have variations in the timing of the fatty acid synthesis. In oat seeds, lipid accumulation occurs during early embryo development, 44 while in some oil crops such as sunflower, Arabidopsis thaliana, rapeseed, and sesame, lipid accumulation occurs during late embryo morphogenesis. 18,45,46 In the Bama hemp seed development process, we found that oil bodies appeared during the late stage of embryo development (day21), consistent with the aforementioned oil seed species descripted above.…”

Section: Morphological Trait Of Seed Developmentmentioning

confidence: 99%

Integrated Transcriptomic and Metabolomic Analysis Reveal the Dynamic Process of Bama Hemp Seed Development and the Accumulation Mechanism of α-Linolenic Acid and Linoleic Acid

Nie,

Ma,

et al. 2024

J. Agric. Food Chem.

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Bama County is a world-famous longevity county in the Guangxi Province, China. Bama hemp is a traditional seed used in hemp cultivation in the Bama County. The seeds contain abundant unsaturated fatty acids, particularly linoleic acid (LA) and linolenic acid in the golden ratio. These two substances have been proven to be related to human health and the prevention of various diseases. However, the seed development and seed oil accumulation mechanisms remain unclear. This study employed a combined analysis of physiological, transcriptomic, and metabolomic parameters to elucidate the fatty acid formation patterns in Bama hemp seeds throughout development. We found that seed oil accumulated at a late stage in embryo development, with seed oil accumulation following an "S″-shaped growth curve, and positively correlated with seed size, sugar content, protein content, and starch content. Transcriptome analysis identified genes related to the metabolism of LA, α-linolenic acid (ALA), and jasmonic acid (JA). We found that the FAD2 gene was upregulated 165.26 folds and the FAD3 gene was downregulated 6.15 folds at day 21. Metabolomic changes in LA, ALA, and JA compounds suggested a competitive relationship among these substances. Our findings indicate that the peak period of substance accumulation and nutrient accumulation in Bama hemp seeds occurs during the midstage of seed development (day 21) rather than in the late stage (day 40). The results of this research will provide a theoretical basis for local cultivation and deep processing of Bama hemp.

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“…It has been demonstrated several times that it is in principle possible to change the fatty acid composition of rapeseed by introducing nonendogenous genes into the rape genome. 13 The introduction of new genes into the Brassica species is mainly achieved by Agrobacterium tumefaciens-mediated gene transfer. 14 -16 For this, the wanted DNA is incorporated into A. tumefaciens.…”

Section: Rapeseed and A Problem In Plant Breedingmentioning

confidence: 99%

Nondestructive analysis of single rapeseeds by means of Raman spectroscopy

Reitzenstein

Rösch

Strehle

et al. 2006

J Raman Spectroscopy

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The value of different vegetable oils can be correlated with the content of polyunsaturated fatty acids, especially omega-3-fatty acids such as linolenic acid, because of their contribution to healthy nutrition. One expression for the degree of unsaturation is the iodine value normally measured with gas chromatography. The use of Raman spectroscopy allows a rapid calculation of the iodine value and, in addition, only in a minimal sample volume. Therefore, this method can be used in single rapeseeds in order to predict the iodine value before harvesting. Additionally, the method can also be used for breeding investigations. Here, the lipid content and composition of a plant can be predicted by measuring the seedling without destruction.

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The use of conventional and molecular genetics to produce new diversity in seed oil composition for the use of plant breeders-progress, problems and future prospects

Cited by 18 publications

References 17 publications

Seed Oil Quality of Brassica napus and Brassica rapa Germplasm from Northwestern Spain

Seed Oil Quality of Brassica napus and Brassica rapa Germplasm from Northwestern Spain

Integrated Transcriptomic and Metabolomic Analysis Reveal the Dynamic Process of Bama Hemp Seed Development and the Accumulation Mechanism of α-Linolenic Acid and Linoleic Acid

Nondestructive analysis of single rapeseeds by means of Raman spectroscopy

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