α-Linolenate and Photosynthetic Activity in <i>Chlorella protothecoides</i>

Kobayashi, Masayuki; Benson, A. A.

doi:10.1104/pp.42.3.308

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…It was once supposed that a-linolenic acid, the major fatty acid in leaves, was involved in photosynthetic electron transport (Erwin & Bloch, 1963), but more recent evidence (James & Nichols, 1966;Katayama & Benson, 1967) makes this seem unlikely. Even trans-hexadec-3-enoic acid, which is found only in photosynthetic tissue, is unlikely to be essential to photosynthesis, since it is absent from blue-green algae (Nichols & Wood, 1968).…”

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confidence: 99%

Turnover of the glycerolipids of pumpkin leaves. The importance of phosphatidylcholine

Roughan¹

1970

Biochemical Journal

118

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Between 1 and 5% of the 14C recovered from pumpkin leaves within 15-60min after pulse-labelling with 14C02 was in the lipids. The specific radioactivity of the phospholipids was higher than that of the glycolipids. Phosphatidylcholine had five times the specific radioactivity of monogalactosyl diglyceride, and the specific radioactivity of neither galactolipid changed significantly between 1 and 48 h after labelling. It therefore seemed unlikely that the galactose moieties of the galactolipids were involved in the transport of assimilated compounds across the chloroplast membrane. Within 60min of the application of [1-14C]acetate to the surfaces of mature, intact pumpkin leaves 70% of the recovered 14C was in the lipid fraction. Of the separated glycerolipids, phosphatidylcholine had by far the highest specific radioactivity at the shorter time-intervals, and the glycolipids again had the lowest specific radioactivities. Phosphatidylcholine was the only lipid to show a significant turnover of radiocarbon as judged by the decrease in specific radioactivity with time. From a comparison of the changes with time of the labelling of fatty acid fractions from phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and monogalactosyl diglyceride, it is suggested that the primary site of linolenic acid biosynthesis in leaf cells is within the phosphatidylcholine molecule.

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confidence: 99%

Turnover of the glycerolipids of pumpkin leaves. The importance of phosphatidylcholine

Roughan¹

1970

Biochemical Journal

118

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Oil Quality Improvement in Soybeans‐Glycine max (L.) Merr.

Hammond

Fehr

1975

Fette, Seifen, Anstrichm.

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Plant breeding was used to reduce the linolenic acid content of soybean oil and improve oil stability. By crossing strains with the lowest linolenic acid content available, it was possible to produce offspring with amounts of linolenic acid 1 to 1.5% lower than the best parental strain. The selection of desirable strains was greatly accelerated by growing plants in Puerto Rico during the winter. Mutagenic agents (X‐rays and ethyl methylsulfonate) were used in an attempt to introduce more variability for fatty acid composition into the population. Seed source has a small effect on the amount of linolenic acid produced in the next generation of seeds. A late planting date significantly increased the amount of linolenic and stearic acid in soybeans. There was a significant negative correlation between linolenic acid and both oleic and stearic acid.

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Photosynthesis Bibliography volume 1 1966/1970

Šesták¹,

Čatský²

1974

Photosynthesis Bibliography Volume 1 1966/1970

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α-Linolenate and Photosynthetic Activity in Chlorella protothecoides

Cited by 5 publications

References 23 publications

Turnover of the glycerolipids of pumpkin leaves. The importance of phosphatidylcholine

Turnover of the glycerolipids of pumpkin leaves. The importance of phosphatidylcholine

Oil Quality Improvement in Soybeans‐Glycine max (L.) Merr.

Photosynthesis Bibliography volume 1 1966/1970

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