Abstract
Addition of 50 mM NaCl to Oryza sativa L. had little effect upon the time of leaf initiation, but leaf mortality prior to the normal phase of senescence was increased and the onset of senescence was advanced. There was no significant effect upon the day-to-day pattern of growth, nor upon the ultimate length, of leaves that were developing at the time of, or shortly after, salinization with 50 mM NaCI. Leaves that developed after prolonged exposure of the plants to salinity were shorter. Addition of NaCl, KC1 or mannitol to the root medium brought about a cessation of leaf elongation within one minute. Growth at a reduced rate restarted abruptly after a lag period that depended upon the external concentration. Elongation rate recovered its original value within 24 h after exposure to 50 mM NaCl, though not at higher concentrations. Addition of NaCl at concentrations up to 100 mM elicited no short-term effects upon photosynthetic gas exchange. Na uptake contributed to osmotic adjustment of the growing zone. When plants were rapidly exposed to 50 mM NaCl, no change in turgor pressure was detectable in the growing zone with the resolution of the miniature pressure probe used (about 70 kPa). It is concluded that the initial growth reduction in rice caused by salinization is due to a limitation of water supply. A clear distinction is made between the initial effects of low salinity which are recoverable and the long-term effects which result from the accumulation of salt within expanded leaves.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 16
Claim · model-written summary
50 mM NaCl had little effect on rice leaf initiation time.
- Taxon
- Oryza sativa L.
Oryza sativae0 - Treatment
- 50 mM NaCle0
- Outcome
- time of leaf initiatione0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of 50 mM NaCl to Oryza sativa L. had little effect upon the time of leaf initiation, but leaf mortality prior to the normal phase of senescence was increased and the onset of senescence was advanced.”
Claim · model-written summary
50 mM NaCl increased rice leaf mortality before normal senescence.
- Taxon
- Oryza sativa L.Oryza sativae0
- Treatment
- 50 mM NaCle0
- Outcome
- leaf mortality prior to the normal phase of senescencee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of 50 mM NaCl to Oryza sativa L. had little effect upon the time of leaf initiation, but leaf mortality prior to the normal phase of senescence was increased and the onset of senescence was advanced.”
Claim · model-written summary
50 mM NaCl advanced the onset of rice leaf senescence.
- Taxon
- Oryza sativa L.Oryza sativae0
- Treatment
- 50 mM NaCle0
- Outcome
- onset of senescencee0
- Direction
- advancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of 50 mM NaCl to Oryza sativa L. had little effect upon the time of leaf initiation, but leaf mortality prior to the normal phase of senescence was increased and the onset of senescence was advanced.”
Claim · model-written summary
Salinization with 50 mM NaCI had no significant effect on the day-to-day growth pattern or ultimate length of leaves already developing.
- Taxon
- RiceOryza sativat0
- Treatment
- salinization with 50 mM NaCIe0
- Outcome
- day-to-day pattern of growth, nor upon the ultimate lengthe0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant effect upon the day-to-day pattern of growth, nor upon the ultimate length, of leaves that were developing at the time of, or shortly after, salinization with 50 mM NaCI.”
t0“Rice”
Claim · model-written summary
Leaves developing after prolonged salt exposure were shorter.
- Taxon
- RiceOryza sativat0
- Treatment
- prolonged exposure of the plants to salinitye0
- Outcome
- Leavese0
- Direction
- shortere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaves that developed after prolonged exposure of the plants to salinity were shorter”
t0“Rice”
Claim · model-written summary
NaCl addition to root medium stopped leaf elongation within one minute.
- Taxon
- RiceOryza sativat0
- Treatment
- NaCle0
- Outcome
- leaf elongatione0
- Direction
- cessatione0
- Value
- within one minutee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl, KC1 or mannitol to the root medium brought about a cessation of leaf elongation within one minute”
t0“Rice”
Claim · model-written summary
KC1 addition to root medium stopped leaf elongation within one minute.
- Taxon
- RiceOryza sativat0
- Treatment
- KC1e0
- Outcome
- leaf elongatione0
- Direction
- cessatione0
- Value
- within one minutee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl, KC1 or mannitol to the root medium brought about a cessation of leaf elongation within one minute”
t0“Rice”
Claim · model-written summary
mannitol addition to root medium stopped leaf elongation within one minute.
- Taxon
- RiceOryza sativat0
- Treatment
- mannitole0
- Outcome
- leaf elongatione0
- Direction
- cessatione0
- Value
- within one minutee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl, KC1 or mannitol to the root medium brought about a cessation of leaf elongation within one minute”
t0“Rice”
Claim · model-written summary
Leaf growth resumed at a reduced rate after a lag dependent on external concentration.
- Taxon
- RiceOryza sativat0
- Outcome
- Growthe0
- Direction
- reduced ratee0
- Qualifier
- external concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth at a reduced rate restarted abruptly after a lag period that depended upon the external concentration”
t0“Rice”
Claim · model-written summary
Leaf elongation rate recovered to its original value within 24 hours after 50 mM NaCl.
- Taxon
- RiceOryza sativat0
- Treatment
- 50 mM NaCle0
- Outcome
- Elongation ratee0
- Direction
- recoverede0
- Value
- within 24 he0
- Comparator
- original valuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elongation rate recovered its original value within 24 h after exposure to 50 mM NaCl, though not at higher concentrations”
t0“Rice”
Claim · model-written summary
Elongation rate did not recover to its original value within 24 hours at higher NaCl concentrations.
- Taxon
- RiceOryza sativat0
- Treatment
- higher concentrationse0
- Outcome
- Elongation ratee0
- Qualifier
- though not at higher concentrationse0
- Comparator
- original valuee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elongation rate recovered its original value within 24 h after exposure to 50 mM NaCl, though not at higher concentrations”
t0“Rice”
Claim · model-written summary
Up to 100 mM NaCl caused no short-term change in photosynthetic gas exchange.
- Taxon
- RiceOryza sativat0
- Treatment
- NaCl at concentrations up to 100 mMe0
- Outcome
- photosynthetic gas exchangee0
- Direction
- no short-term effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of NaCl at concentrations up to 100 mM elicited no short-term effects upon photosynthetic gas exchange”
t0“Rice”
Claim · model-written summary
Na uptake contributed to osmotic adjustment of the growing zone.
- Taxon
- RiceOryza sativat0
- Compound
- Nae0
- Outcome
- osmotic adjustment of the growing zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Na uptake contributed to osmotic adjustment of the growing zone”
t0“Rice”
Claim · model-written summary
Rapid exposure to 50 mM NaCl caused no detectable turgor-pressure change in the growing zone at about 70 kPa probe resolution.
- Taxon
- RiceOryza sativat0
- Treatment
- 50 mM NaCle0
- Outcome
- turgor pressuree0
- Direction
- no changee0
- Qualifier
- about 70 kPae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plants were rapidly exposed to 50 mM NaCl, no change in turgor pressure was detectable in the growing zone with the resolution of the miniature pressure probe used (about 70 kPa)”
t0“Rice”
Claim · model-written summary
The authors concluded that limited water supply causes the initial rice growth reduction after salinization.
- Taxon
- riceOryza sativae0
- Treatment
- salinizatione0
- Outcome
- initial growth reductione0
- Qualifier
- limitation of water supplye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the initial growth reduction in rice caused by salinization is due to a limitation of water supply”
Claim · model-written summary
The authors distinguish recoverable initial effects of low salinity from long-term salt accumulation effects in expanded leaves.
- Taxon
- RiceOryza sativat0
- Outcome
- long-term effectse0
- Qualifier
- accumulation of salt within expanded leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the initial effects of low salinity which are recoverable and the long-term effects which result from the accumulation of salt within expanded leaves”
t0“Rice”
The same questions in other papers
sodium chloride · growth · Oryza sativa (rice)Results differ
27 papers in the same direction as this paper · 100 in the opposite direction
- no effect
- negative
- negative
124 papers more in this group
See all 128 papers →mannitol · growth · Oryza sativa (rice)Positive and negative results
8 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →sodium chloride · physiology: water · Oryza sativa (rice)Positive and negative results
11 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
10 papers more in this group
See all 14 papers →sodium chloride · physiology: photosynthesis · Oryza sativa (rice)Positive and negative results
21 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
19 papers more in this group
See all 23 papers →sodium chloride · quality: postharvest · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
salinity · growth · Oryza sativa (rice)Positive and negative results
258 papers in the same direction as this paper · 37 in the opposite direction
- negative
- negative
- positive
292 papers more in this group
See all 296 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.