Abstract
The hydraulic conductance of roots of chilling‐sensitive mung bean plants is reduced markedly at low temperatures. When roots are chilled suddenly under high irradiance, or when plants with roots chilled in the dark are exposed to a natural dawn, the stomata remain open for several hours. During this period the plants may wilt severely if the evaporative demand is sufficiently large. Under lower evaporative demand and less severe wilting, the plants may subsequently rehydrate. Following root chilling there is a rapid (> 30 min) initial change in root conductivity (3. 2‐ fold). Within hours the hydraulic conductivity of the pathway from stem xylem to leaf tissue decreases dramatically. Within 1 d, the hydraulic conductivity of the roots decreases further (4. 5‐fold). Over 5 d these large resistances disappear and conductivity recovers to a value greater than at the start of chilling. This response and stomatal closure allow the plant to rehydrate to a condition similar to that of controls. There is no simple relation between this hydraulic recovery and the accumulation of abscisic acid in the roots.
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Claims 11
Claim · model-written summary
Hydraulic conductance of mung bean roots is reduced markedly at low temperatures.
- Taxon
- mung bean
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Vigna radiatat0 - Treatment
- low temperaturese1
- Outcome
- hydraulic conductance of rootse1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“mung bean plants”
e1“The hydraulic conductance of roots of chilling‐sensitive mung bean plants is reduced markedly at low temperatures”
Claim · model-written summary
Sudden chilling of roots under high irradiance keeps stomata open for several hours in mung bean.
- Taxon
- mung beanVigna radiatat0
- Treatment
- roots are chilled suddenly under high irradiancee1
- Outcome
- stomata remain opene2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“When roots are chilled suddenly under high irradiance”
e2“the stomata remain open for several hours”
Claim · model-written summary
Mung bean with dark-chilled roots exposed to a natural dawn keeps stomata open for several hours.
- Taxon
- mung beanVigna radiatat0
- Treatment
- plants with roots chilled in the dark are exposed to a natural dawne1
- Outcome
- stomata remain opene2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“or when plants with roots chilled in the dark are exposed to a natural dawn”
e2“the stomata remain open for several hours”
Claim · model-written summary
Mung bean plants may wilt severely when evaporative demand is high.
- Taxon
- mung beanVigna radiatat0
- Outcome
- wilt severelye1
- Qualifier
- if the evaporative demand is sufficiently largee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“the plants may wilt severely if the evaporative demand is sufficiently large”
Claim · model-written summary
Under lower evaporative demand and less severe wilting, mung bean plants may subsequently rehydrate.
- Taxon
- mung beanVigna radiatat0
- Outcome
- rehydratee1
- Qualifier
- Under lower evaporative demand and less severe wiltinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“Under lower evaporative demand and less severe wilting, the plants may subsequently rehydrate”
Claim · model-written summary
Following root chilling, root conductivity shows a rapid initial change of about 3.2-fold.
- Taxon
- mung beanVigna radiatat0
- Treatment
- root chillinge1
- Outcome
- root conductivitye1
- Direction
- decreaseinferrede1
- Value
- 3. 2‐ folde1
- Qualifier
- rapid (> 30 min) initiale1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“Following root chilling there is a rapid (> 30 min) initial change in root conductivity (3. 2‐ fold)”
Claim · model-written summary
Within hours of root chilling, hydraulic conductivity of the stem-xylem-to-leaf pathway decreases dramatically in mung bean.
- Taxon
- mung beanVigna radiatat0
- Treatment
- root chillinge1
- Outcome
- hydraulic conductivity of the pathway from stem xylem to leaf tissuee2
- Direction
- decreasese2
- Qualifier
- Within hourse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“Following root chilling there is a rapid (> 30 min) initial change in root conductivity (3. 2‐ fold)”
e2“Within hours the hydraulic conductivity of the pathway from stem xylem to leaf tissue decreases dramatically”
Claim · model-written summary
Within one day of root chilling, root hydraulic conductivity decreases further, about 4.5-fold, in mung bean.
- Taxon
- mung beanVigna radiatat0
- Treatment
- root chillinge1
- Outcome
- hydraulic conductivity of the rootse2
- Direction
- decreases furthere2
- Value
- 4. 5‐folde2
- Qualifier
- Within 1 de2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“Following root chilling there is a rapid (> 30 min) initial change in root conductivity (3. 2‐ fold)”
e2“Within 1 d, the hydraulic conductivity of the roots decreases further (4. 5‐fold)”
Claim · model-written summary
Over five days after root chilling, large root resistances disappear and conductivity recovers above its starting value in mung bean.
- Taxon
- mung beanVigna radiatat0
- Treatment
- root chillinge1
- Outcome
- conductivitye2
- Direction
- recovers to a value greater thane2
- Qualifier
- Over 5 de2
- Comparator
- at the start of chillinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“Following root chilling there is a rapid (> 30 min) initial change in root conductivity (3. 2‐ fold)”
e2“Over 5 d these large resistances disappear and conductivity recovers to a value greater than at the start of chilling”
Claim · model-written summary
Stomatal closure and the hydraulic response allow mung bean plants to rehydrate to a condition similar to controls.
- Taxon
- mung beanVigna radiatat0
- Outcome
- rehydratee1
- Direction
- similare1
- Comparator
- that of controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“This response and stomatal closure allow the plant to rehydrate to a condition similar to that of controls”
Claim · model-written summary
Hydraulic recovery of mung bean shows no simple relation to abscisic acid accumulation in the roots.
- Taxon
- mung beanVigna radiatat0
- Compound
- abscisic acide1
- Outcome
- hydraulic recoverye1
- Direction
- no_changeinferrede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“mung bean plants”
e1“There is no simple relation between this hydraulic recovery and the accumulation of abscisic acid in the roots”
The same questions in other papers
cold · physiology: water · Vigna radiata (mung bean)Results agree
3 papers in the same direction as this paper
- negative
- negative
- no effect
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.