Abstract
Irrigation is used frequently in potato cultivation to maximize yield, but water availability may also affect the composition of the crop, with implications for processing properties and food safety. Five varieties of potatoes, including drought-tolerant and -sensitive types, which had been grown with and without irrigation, were analyzed to show the effect of water supply on concentrations of free asparagine, other free amino acids, and sugars and on the acrylamide-forming potential of the tubers. Two varieties were also analyzed under more severe drought stress in a glasshouse. Water availability had profound effects on tuber free amino acid and sugar concentrations, and it was concluded that potato farmers should irrigate only if necessary to maintain the health and yield of the crop, because irrigation may increase the acrylamide-forming potential of potatoes. Even mild drought stress caused significant changes in composition, but these differed from those caused by more extreme drought stress. Free proline concentration, for example, increased in the field-grown potatoes of one variety from 7.02 mmol/kg with irrigation to 104.58 mmol/kg without irrigation, whereas free asparagine concentration was not affected significantly in the field but almost doubled from 132.03 to 242.26 mmol/kg in response to more severe drought stress in the glasshouse. Furthermore, the different genotypes were affected in dissimilar fashion by the same treatment, indicating that there is no single, unifying potato tuber drought stress response.
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Claims 8
Claim · model-written summary
Water availability substantially changed tuber amino acid and sugar concentrations.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- Water availabilitye0
- Outcome
- tuber free amino acid and sugar concentrationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water availability had profound effects on tuber free amino acid and sugar concentrations”
t0“Potato”
Claim · model-written summary
Irrigation may increase potato acrylamide-forming potential.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- irrigatione0
- Outcome
- acrylamide-forming potentiale0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation may increase the acrylamide-forming potential of potatoes”
Claim · model-written summary
Farmers should irrigate only as needed for crop health and yield.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- irrigate only if necessary to maintain the health and yield of the crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato farmers should irrigate only if necessary to maintain the health and yield of the crop”
Claim · model-written summary
Mild drought significantly changed composition differently from severe drought.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- mild drought stresse0
- Outcome
- changes in compositione0
- Comparator
- more extreme drought stresse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Even mild drought stress caused significant changes in composition, but these differed from those caused by more extreme drought stress”
t0“Potato”
Claim · model-written summary
Proline rose from 7.02 with irrigation to 104.58 mmol/kg without irrigation in one field variety.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- without irrigatione0
- Outcome
- Free proline concentratione0
- Direction
- increasede0
- Value
- 104.58 mmol/kge0
- Qualifier
- 7.02 mmol/kge0
- Comparator
- with irrigatione0
- Setting
- field-growne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free proline concentration, for example, increased in the field-grown potatoes of one variety from 7.02 mmol/kg with irrigation to 104.58 mmol/kg without irrigation”
Claim · model-written summary
Field asparagine concentration was not significantly affected.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- free asparagine concentratione0
- Direction
- not affectede0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“free asparagine concentration was not affected significantly in the field”
t0“Potato”
Claim · model-written summary
Severe glasshouse drought nearly doubled asparagine from 132.03 to 242.26 mmol/kg.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- more severe drought stresse0
- Outcome
- free asparagine concentratione1
- Direction
- almost doublede0
- Value
- 242.26 mmol/kge0
- Qualifier
- 132.03e0
- Setting
- glasshousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“almost doubled from 132.03 to 242.26 mmol/kg in response to more severe drought stress in the glasshouse”
e1“free asparagine concentration was not affected significantly in the field”
t0“Potato”
Claim · model-written summary
Genotypes responded differently to identical water treatment.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- different genotypese0
- Treatment
- same treatmente0
- Outcome
- affected in dissimilar fashione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the different genotypes were affected in dissimilar fashion by the same treatment”
t0“Potato”
The same questions in other papers
irrigation · physiology: osmolytes · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- positive
drought · molecular: metabolites · Solanum tuberosum (potato)Positive and negative results
7 papers in the same direction as this paper · 8 in the opposite direction
- negative
- positive
- positive
12 papers more in this group
See all 16 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.