Abstract
Plants respond to salinity by altering their physiological parameters in order to maintain their water balance. The reduction in root hydraulic conductivity is one of the first responses of plants to the presence of salt in order to minimize water stress. Although its regulation has been commonly attributed to aquaporins activity, osmotic adjustment and the toxic effect of Na+ and Cl- have also a main role in the whole process. We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days and found different responses in root hydraulic conductivity over-time. An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment. After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content, and with the intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels. Thus, the different responses of bean plants to mild salt stress over time may be connected with root fructose accumulation, and intracellular localization of PIP aquaporins.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
NaCl reduced root hydraulic conductivity initially and after nine days.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise1 - Treatment
- 30 mM NaCle1
- Outcome
- root hydraulic conductivitye0
- Direction
- reductione0
- Qualifier
- initial and finale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl”
e1“We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days”
Claim · model-written summary
NaCl reduced stomatal conductance initially and after nine days.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- 30 mM NaCle1
- Outcome
- stomatal conductancee0
- Direction
- reductione0
- Qualifier
- initial and finale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl”
e1“We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days”
Claim · model-written summary
NaCl reduced leaf water potential initially and after nine days.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- 30 mM NaCle1
- Outcome
- leaf water potentiale0
- Direction
- reductione0
- Qualifier
- initial and finale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An initial and final reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl”
e1“We studied the effects of 30 mM NaCl on Phaseolus vulgaris plants after 9 days”
Claim · model-written summary
After six days of NaCl treatment, root hydraulic conductivity rose to control levels.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- NaCl treatmente0
- Outcome
- root hydraulic conductivitye0
- Direction
- increasee0
- Qualifier
- After 6 dayse0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants”
e1“Phaseolus vulgaris plants”
Claim · model-written summary
After six days of NaCl treatment, root fructose content increased.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- NaCl treatmente0
- Outcome
- root fructose contente0
- Direction
- increasee0
- Qualifier
- After 6 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 6 days of NaCl treatment, the increase in root hydraulic conductivity to the levels of control plants was accompanied by an increase in root fructose content”
e1“Phaseolus vulgaris plants”
Claim · model-written summary
After six days of NaCl treatment, root PIP aquaporins localized intracellularly near epidermis and xylem.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise2
- Organ / stage
- cortex cells close to the epidermis and to cells surrounding xylem vesselse0
- Treatment
- NaCl treatmente1
- Gene
- root plasma membrane aquaporins (PIP)e0
- Outcome
- intracellular localization of root plasma membrane aquaporins (PIP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“intracellular localization of root plasma membrane aquaporins (PIP) to cortex cells close to the epidermis and to cells surrounding xylem vessels”
e1“After 6 days of NaCl treatment”
e2“Phaseolus vulgaris plants”
Claim · model-written summary
The authors attributed early and late water-relation reductions to osmotic shock and salt accumulation symptoms, respectively.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise2
- Outcome
- reduction of root hydraulic conductivity, stomatal conductance, and leaf water potentiale1
- Qualifier
- initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was attributed to an initial osmotic shock after 1 day of treatment, and to the initial symptoms of salt accumulation within the plant tissues after 9 days of treatment”
e1“reduction of root hydraulic conductivity, stomatal conductance, and leaf water potential in response to NaCl”
e2“Phaseolus vulgaris plants”
The same questions in other papers
sodium chloride · soil: physics · Phaseolus vulgaris (common bean)Positive and negative results
3 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →sodium chloride · physiology: water · Phaseolus vulgaris (common bean)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 papers →sodium chloride · physiology: gas exchange · Phaseolus vulgaris (common bean)Results agree
1 paper in the same direction as this paper
- negative
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.