Abstract
Abstract The effects of transpiration rate on B uptake by roots and translocation to shoots of table beet (Beta vulgaris L. cv. Red Ace) plants were studied under conditions of environmental control. Plants grown under high or low relative humidities (RH) had low or high rates of transpiration, respectively. Dry weights and B contents of shoots and roots were higher among plants grown at 80% RH and B concentrations of roots were lower compared to plants grown at 30% RH. Shoot B concentrations were not affected by RH. Rates of growth and B accumulation in shoots were closely correlated for plants grown in 30% or 80% RH. These parameters were not closely correlated in roots. The rate of B uptake per g root dry weight was greater in plants having higher transpiration rates; whereas the rate of B translocation to shoots per g dry weight was independent of transpiration rate. Thus we propose that B translocation to shoots is controlled mechanistically by rates of dry matter accumulation during stages of rapid growth, i.e. a sink effect.
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Claims 9
Claim · model-written summary
Dry weights of shoots and roots were higher in plants grown at 80% RH than at 30% RH.
- Taxon
- table beet
Beta vulgaris subsp. vulgarise0 - Material
- Red Acee0
- Organ / stage
- shoots and rootse2
- Treatment
- plants grown at 80% RHe2
- Outcome
- Dry weightse2
- Direction
- highere2
- Comparator
- plants grown at 30% RHe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e2“Dry weights and B contents of shoots and roots were higher among plants grown at 80% RH and B concentrations of roots were lower compared to plants grown at 30% RH”
Claim · model-written summary
B contents of shoots and roots were higher in plants grown at 80% RH than at 30% RH.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Material
- Red Acee0
- Organ / stage
- shoots and rootse2
- Treatment
- plants grown at 80% RHe2
- Outcome
- B contentse2
- Direction
- highere2
- Comparator
- plants grown at 30% RHe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e2“Dry weights and B contents of shoots and roots were higher among plants grown at 80% RH and B concentrations of roots were lower compared to plants grown at 30% RH”
Claim · model-written summary
B concentrations of roots were lower in plants grown at 80% RH than at 30% RH.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Material
- Red Acee0
- Organ / stage
- rootse2
- Treatment
- plants grown at 80% RHe2
- Outcome
- B concentrations of rootse2
- Direction
- lowere2
- Comparator
- plants grown at 30% RHe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e2“Dry weights and B contents of shoots and roots were higher among plants grown at 80% RH and B concentrations of roots were lower compared to plants grown at 30% RH”
Claim · model-written summary
Shoot B concentrations were not affected by relative humidity.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Treatment
- RHe3
- Outcome
- Shoot B concentrationse3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e3“Shoot B concentrations were not affected by RH”
Claim · model-written summary
Growth rate and B accumulation in shoots were closely correlated in plants grown at 30% or 80% RH.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Treatment
- 30% or 80% RHe4
- Outcome
- Rates of growth and B accumulation in shootse4
- Qualifier
- closely correlatede4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e4“Rates of growth and B accumulation in shoots were closely correlated for plants grown in 30% or 80% RH”
Claim · model-written summary
Growth and B accumulation were not closely correlated in roots.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Organ / stage
- rootse5
- Outcome
- These parameterse5
- Qualifier
- not closely correlatede5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e5“These parameters were not closely correlated in roots”
Claim · model-written summary
Rate of B uptake per g root dry weight was greater in plants with higher transpiration rates.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Treatment
- higher transpiration ratese6
- Outcome
- The rate of B uptake per g root dry weighte6
- Direction
- greatere6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e6“The rate of B uptake per g root dry weight was greater in plants having higher transpiration rates; whereas the rate of B translocation to shoots per g dry weight was independent of transpiration rate”
Claim · model-written summary
Rate of B translocation to shoots per g dry weight was independent of transpiration rate.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Treatment
- transpiration ratee6
- Outcome
- the rate of B translocation to shoots per g dry weighte6
- Direction
- no_changeinferrede6
- Qualifier
- independente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e6“The rate of B uptake per g root dry weight was greater in plants having higher transpiration rates; whereas the rate of B translocation to shoots per g dry weight was independent of transpiration rate”
Claim · model-written summary
B translocation to shoots is proposed to be controlled by rates of dry matter accumulation during rapid growth, a sink effect.
- Taxon
- table beetBeta vulgaris subsp. vulgarise0
- Outcome
- B translocation to shootse7
- Qualifier
- rates of dry matter accumulation during stages of rapid growthe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“table beet (Beta vulgaris L. cv. Red Ace) plants”
e7“Thus we propose that B translocation to shoots is controlled mechanistically by rates of dry matter accumulation during stages of rapid growth, i.e. a sink effect”
The same questions in other papers
humidity · growth · Beta vulgaris (beet)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
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.