Abstract
Abstract Adaptation to low water availability in sugar beet includes the accumulation of solutes relevant for the technical quality of the beet. Two sugar beet genotypes were grown in pot experiments under drought stress of different severity to study effects on taproot composition and concentration of solutes relevant for technical quality, reversibility of drought effects after re‐watering and genotypic differences in drought response. Differences in stress sensitivity between the genotypes were not observed as reductions in taproot and leaf dry weight and white sugar yield were the same. Increasing dry matter concentration with decreasing water supply could, in part, be attributed to an increase in the concentration of cell wall components. The major solutes in the taproot were sucrose, potassium, amino N (the sum of amino acids) and betaine. Sucrose concentration decreased considerably under drought, indicating limited availability of assimilates. In contrast, all further solutes increased in concentration with increasing severity of stress. However, the response of individual solutes varied largely. Changes in amino N and nitrate were most pronounced and probably reflect accumulation of non‐utilized metabolites under limited growth. The drought‐induced accumulation of taproot solutes implicates a considerable decrease in the technical quality of the beet. It was only in part reversible by re‐watering. Genotypic variability for solute accumulation under water deficiency was observed but was not linked to drought tolerance.
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Claims 10
Claim · model-written summary
Genotypes had no observed difference in stress sensitivity by dry weight and sugar yield reductions.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Outcome
- Differences in stress sensitivity between the genotypese0
- Direction
- not observede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in stress sensitivity between the genotypes were not observed as reductions in taproot and leaf dry weight and white sugar yield were the same”
t0“sugar beet”
Claim · model-written summary
Dry matter concentration increased as water supply decreased, partly attributed to cell wall components.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- decreasing water supplye0
- Outcome
- dry matter concentratione0
- Direction
- Increasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing dry matter concentration with decreasing water supply could, in part, be attributed to an increase in the concentration of cell wall components”
t0“sugar beet”
Claim · model-written summary
The major taproot solutes were sucrose, potassium, amino N and betaine.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Organ / stage
- taproote0
- Outcome
- major solutes in the taproot were sucrose, potassium, amino N (the sum of amino acids) and betainee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The major solutes in the taproot were sucrose, potassium, amino N (the sum of amino acids) and betaine”
t0“sugar beet”
Claim · model-written summary
Sucrose concentration decreased considerably under drought.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- droughte0
- Outcome
- Sucrose concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose concentration decreased considerably under drought”
t0“sugar beet”
Claim · model-written summary
Other solute concentrations increased with stress severity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- increasing severity of stresse0
- Outcome
- all further solutese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all further solutes increased in concentration with increasing severity of stress”
t0“sugar beet”
Claim · model-written summary
Amino N and nitrate had the most pronounced changes.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Outcome
- Changes in amino N and nitratee0
- Direction
- most pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in amino N and nitrate were most pronounced”
t0“sugar beet”
Claim · model-written summary
Drought solute accumulation considerably decreased technical beet quality.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- drought‐induced accumulation of taproot solutese0
- Outcome
- technical quality of the beete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drought‐induced accumulation of taproot solutes implicates a considerable decrease in the technical quality of the beet”
t0“sugar beet”
Claim · model-written summary
Rewatering partly reversed drought effects.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- re‐wateringe0
- Outcome
- reversiblee0
- Direction
- reversiblee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was only in part reversible by re‐watering”
t0“sugar beet”
Claim · model-written summary
Genotypic variability in solute accumulation was observed under water deficiency.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- water deficiencye0
- Outcome
- Genotypic variability for solute accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypic variability for solute accumulation under water deficiency was observed”
t0“sugar beet”
Claim · model-written summary
Genotypic solute accumulation variability was not linked to drought tolerance.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- drought tolerancee0
- Outcome
- Genotypic variability for solute accumulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Genotypic variability for solute accumulation under water deficiency was observed but was not linked to drought tolerance”
t0“sugar beet”
The same questions in other papers
drought · molecular: metabolites · Beta vulgaris (beet)Results differ
5 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- positive
6 papers more in this group
See all 10 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.