Abstract
Abstract To investigate the effects of light on the accumulation of lipids in seeds, fruits of both peanut and soybean plants were allowed to grow under different types of light conditions (natural, red, blue, green, or far-red light) and in darkness. Irradiation with each type of light from the 20th or 30th day, except for green light from the 30th day, resulted in lower dry weight of peanut seeds. The peanut seeds irradiated with natural, blue or far-red light from the 30th day onward contained a smaller amount of lipids, lower levels of triacylglycerides (TG), and higher levels of total sugar and diacylglycerides (DG), than the seeds grown in darkness. In the case of soybean seeds grown in darkness, the lipid content increased, but the total sugar and protein contents decreased. Exposure of soybean seeds to far-red light did not result in an increase in the lipid content. In vitro, 14C-glycerol-3-phosphate was converted to DG rather than to TG under irradiation with light compared with dark conditions. In contrast, the effect of light on the incorporation of 14C-oleoyl-CoA into TG was not appreciable. These findings suggest that the accumulation of lipid in the seeds of leguminous plants is depressed by light, with far-red light affecting most the accumulation of lipids, which may regulate the synthesis of TG via DG from glycerol-3-phosphate. Key Words: diacylglyceridelightlipidseeds of leguminous plantstriacylglyceride
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Claims 8
Claim · model-written summary
Most light treatments from day 20 or 30 lowered peanut seed dry weight relative to darkness; green light from day 30 was the exception.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- Irradiation with each type of light from the 20th or 30th daye0
- Outcome
- dry weight of peanut seedse0
- Direction
- lowere0
- Qualifier
- except for green light from the 30th daye0
- Comparator
- darknesse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiation with each type of light from the 20th or 30th day, except for green light from the 30th day, resulted in lower dry weight of peanut seeds.”
e1“and in darkness”
Claim · model-written summary
Natural, blue and far-red light from day 30 lowered peanut seed lipid and triacylglyceride amounts versus darkness.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- natural, blue or far-red light from the 30th day onwarde0
- Outcome
- lipids, lower levels of triacylglycerides (TG)e0
- Direction
- smaller amounte0
- Comparator
- darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peanut seeds irradiated with natural, blue or far-red light from the 30th day onward contained a smaller amount of lipids, lower levels of triacylglycerides (TG), and higher levels of total sugar and diacylglycerides (DG), than the seeds grown in darkness.”
Claim · model-written summary
Natural, blue and far-red light from day 30 increased peanut seed sugar and diacylglyceride levels versus darkness.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- natural, blue or far-red light from the 30th day onwarde0
- Outcome
- total sugar and diacylglycerides (DG)e0
- Direction
- highere0
- Comparator
- darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peanut seeds irradiated with natural, blue or far-red light from the 30th day onward contained a smaller amount of lipids, lower levels of triacylglycerides (TG), and higher levels of total sugar and diacylglycerides (DG), than the seeds grown in darkness.”
Claim · model-written summary
In darkness, soybean seed lipid content increased.
- Taxon
- soybean
Glycine maxe0 - Outcome
- lipid contente0
- Direction
- increasede0
- Setting
- darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of soybean seeds grown in darkness, the lipid content increased, but the total sugar and protein contents decreased.”
Claim · model-written summary
In darkness, soybean seed total sugar and protein contents decreased.
- Taxon
- soybeanGlycine maxe0
- Outcome
- total sugar and protein contentse0
- Direction
- decreasede0
- Setting
- darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the case of soybean seeds grown in darkness, the lipid content increased, but the total sugar and protein contents decreased.”
Claim · model-written summary
Far-red light did not increase soybean seed lipid content.
- Taxon
- soybeanGlycine maxe0
- Treatment
- far-red lighte0
- Outcome
- lipid contente0
- Direction
- did not result in an increasee0
- Comparator
- darknesse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure of soybean seeds to far-red light did not result in an increase in the lipid content.”
e1“and in darkness”
Claim · model-written summary
Light shifted in vitro conversion of 14C-glycerol-3-phosphate toward DG rather than TG relative to dark conditions.
- Treatment
- irradiation with lighte0
- Compound
- 14C-glycerol-3-phosphatee0
- Outcome
- converted to DG rather than to TGe0
- Direction
- rather thane0
- Comparator
- dark conditionse0
Not reportedTaxon
Verbatim
e0“In vitro, 14C-glycerol-3-phosphate was converted to DG rather than to TG under irradiation with light compared with dark conditions.”
t0“Seeds”
Claim · model-written summary
Light had no appreciable effect on incorporation of 14C-oleoyl-CoA into TG.
- Taxon
- leguminous plantse1
- Treatment
- lighte0
- Outcome
- incorporation of 14C-oleoyl-CoA into TGe0
- Direction
- not appreciablee0
Not reportedComparator
Verbatim
e0“the effect of light on the incorporation of 14C-oleoyl-CoA into TG was not appreciable.”
e1“seeds of leguminous plants is depressed by light”
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See all 48 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.