Abstract
The acclimation of a plant to a constantly changing environment involves the accumulation of certain organic compounds of low molecular mass, known collectively as compatible solutes, in the cytoplasm. Evidence from numerous investigations of plants strongly suggests that glycine betaine (GB), an amphoteric quaternary amine, plays an important role as a compatible solute under various types of environmental stress, such as high levels of salts and low temperature. In this work, sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil, and the effects of salt on the growth, contents of water, chlorophyll, soluble protein, soluble saccharide and GB in leaf were measured. The addition of NaCl up to 300 mmol/l soil significantly affected the growth, and the contents of water and chlorophyll decreased, whereas the soluble protein and saccharide concentrations in the leaf changed little. On the other hand, the GB concentration increased 6-fold with increasing the salinity of the medium, suggesting that GB is a main osmoprotectant in this plant. The induction of GB was monitored by cultivating the plant seed under salt stress. It was found that the GB originally contained in the seed was lost during the early stage of cultivation, and new GB was synthesized in the stage of germination in a dose-dependent fashion with respect to the salt concentration.
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Claims 7
Claim · model-written summary
NaCl up to 300 mmol/l soil significantly affected sugar beet growth.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise1 - Treatment
- NaCl up to 300 mmol/l soile2
- Outcome
- growthe2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e2“The addition of NaCl up to 300 mmol/l soil significantly affected the growth”
Claim · model-written summary
NaCl decreased water and chlorophyll contents in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- NaCl up to 300 mmol/l soile2
- Outcome
- contents of water and chlorophylle2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e2“The addition of NaCl up to 300 mmol/l soil significantly affected the growth, and the contents of water and chlorophyll decreased, whereas the soluble protein and saccharide concentrations in the leaf changed little”
Claim · model-written summary
Soluble protein and saccharide concentrations in sugar beet leaves changed little under NaCl.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Organ / stage
- leafe2
- Treatment
- NaCl up to 300 mmol/l soile2
- Outcome
- soluble protein and saccharide concentrationse2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e2“The addition of NaCl up to 300 mmol/l soil significantly affected the growth, and the contents of water and chlorophyll decreased, whereas the soluble protein and saccharide concentrations in the leaf changed little”
Claim · model-written summary
Glycine betaine concentration in sugar beet leaves increased 6-fold with increasing medium salinity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Organ / stage
- leafe0
- Treatment
- salinity of the mediume3
- Outcome
- GB concentratione3
- Direction
- increasede3
- Value
- 6-folde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e0“soluble saccharide and GB in leaf were measured”
e3“the GB concentration increased 6-fold with increasing the salinity of the medium”
Claim · model-written summary
Glycine betaine is suggested to be a main osmoprotectant in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Compound
- GBe3
- Outcome
- osmoprotectante3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e3“suggesting that GB is a main osmoprotectant in this plant”
Claim · model-written summary
Glycine betaine originally contained in the seed was lost during the early stage of cultivation.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Organ / stage
- seede4
- Outcome
- GB originally contained in the seed was loste4
- Qualifier
- during the early stage of cultivatione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e4“It was found that the GB originally contained in the seed was lost during the early stage of cultivation”
Claim · model-written summary
New glycine betaine was synthesized during germination in a dose-dependent manner with salt concentration.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Organ / stage
- stage of germinatione4
- Treatment
- salt concentratione4
- Outcome
- new GB was synthesizede4
- Qualifier
- dose-dependent fashion with respect to the salt concentratione4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sugar beet (Beta vulgaris) was grown at NaCl concentrations of up to 300 mmol/l soil”
e4“new GB was synthesized in the stage of germination in a dose-dependent fashion with respect to the salt concentration”
The same questions in other papers
sodium chloride · physiology: osmolytes · Beta vulgaris (beet)Results agree
1 paper in the same direction as this paper
- negative
sodium chloride · physiology: pigments · Beta vulgaris (beet)Results agree
2 papers in the same direction as this paper
- negative
- negative
in vitro · molecular: metabolites · Beta vulgaris (beet)Positive and negative results
1 in the opposite direction
- no effect
salinity · molecular: metabolites · Beta vulgaris (beet)Positive and negative results
6 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- negative
- negative
9 papers more in this group
See all 13 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.