Abstract
Unsuitable temperatures are frequently encountered by soybean (Glycine max L. Merr.) plants grown in the field. Certain polyols have been reported to protect plants from high temperature or frost damage. Controlled environment studies were conducted to investigate the effect of stressful temperature regimes on the content of pinitol (3-O-methyl-D-chiro-inositol) in soybean plants. Hydroponically-grown soybean plants were subjected to high (35/30 °C) or low (15/10 °C) day/night temperature stresses, and pinitol content in different plant parts was determined using high performance liquid chromatography (HPLC). A synthetic plant growth regulator, PGR-IV, was foliarly applied to the plants to evaluate its effect on pinitol content in different plant components. Uniformly-labelled 14C-glucose was fed into the leaves via the transpiration stream, and the effects of high temperature and EXP-S1089, another synthetic plant growth regulator, on the incorporation of 14C-glucose into pinitol was evaluated using HPLC separation and scintillation spectrometry. High-temperature stress significantly increased plant pinitol content and the incorporation of 14C-glucose into pinitol, but decreased the content of sucrose, glucose and fructose. Under low-temperature stress, there was hardly any change in pinitol content, but a drastic increase in soluble sugars. PGR-IV enhanced pinitol translocation from leaves to stems and roots, while EXP-S1089 increased pinitol/sucrose ratio. Accumulation of pinitol may be an adjustment mechanism of the plant to reduce high-temperature damage, but not low-temperature injuries.
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Claims 8
Claim · model-written summary
High temperature increased soybean pinitol content.
- Taxon
- soybean
Glycine maxe1 - Treatment
- High-temperature stresse0
- Outcome
- plant pinitol contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High-temperature stress significantly increased plant pinitol content and the incorporation of 14C-glucose into pinitol”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
High temperature increased incorporation of glucose into soybean pinitol.
- Taxon
- soybeanGlycine maxe1
- Treatment
- High-temperature stresse0
- Outcome
- incorporation of 14C-glucose into pinitole0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High-temperature stress significantly increased plant pinitol content and the incorporation of 14C-glucose into pinitol”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
High temperature decreased soybean sucrose, glucose and fructose content.
- Taxon
- soybeanGlycine maxe2
- Treatment
- High-temperature stresse1
- Outcome
- content of sucrose, glucose and fructosee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but decreased the content of sucrose, glucose and fructose”
e1“High-temperature stress significantly increased plant pinitol content”
e2“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
Low temperature produced hardly any change in soybean pinitol content.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-temperature stresse0
- Outcome
- pinitol contente0
- Direction
- hardly any changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low-temperature stress, there was hardly any change in pinitol content”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
Low temperature drastically increased soybean soluble sugars.
- Taxon
- soybeanGlycine maxe1
- Treatment
- low-temperature stresse0
- Outcome
- soluble sugarse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low-temperature stress, there was hardly any change in pinitol content, but a drastic increase in soluble sugars”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
PGR-IV enhanced soybean pinitol translocation from leaves to stems and roots.
- Taxon
- soybeanGlycine maxe1
- Treatment
- PGR-IVe0
- Outcome
- pinitol translocation from leaves to stems and rootse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PGR-IV enhanced pinitol translocation from leaves to stems and roots”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
EXP-S1089 increased soybean pinitol/sucrose ratio.
- Taxon
- soybeanGlycine maxe1
- Treatment
- EXP-S1089e0
- Outcome
- pinitol/sucrose ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EXP-S1089 increased pinitol/sucrose ratio”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
Claim · model-written summary
Authors suggest pinitol accumulation may reduce high-temperature damage but not low-temperature injuries.
- Taxon
- soybeanGlycine maxe1
- Outcome
- high-temperature damagee0
- Qualifier
- Accumulation of pinitole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accumulation of pinitol may be an adjustment mechanism of the plant to reduce high-temperature damage, but not low-temperature injuries”
e1“soybean (Glycine max L. Merr.) plants grown in the field”
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See all 22 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.