Abstract
The mechanisms of potato ( Solanum tuberosum L.) plants’ tolerance to chloride salinity were investigated in cv. Lugovskoi regionalized in Russia. Regenerated plants were produced in vitro from apical meristem and grown on half-strength Murashige and Skoog medium (0.5 MS) using a hydroponic unit in controlled-climate conditions. At the age of six weeks, the plants were exposed to salt stress (50–150 mM NaCl, 7 days). Plant response to salt stress was estimated by growth parameters (fresh and dry biomass of the aboveground and underground parts of plants, linear dimensions of shoot and root, area of leaf surface, and number of stolons) and physiological characteristics (level of photosynthetic pigments, accumulation of sodium, potassium, and calcium ions in the aboveground and underground parts of plants, content of proline, activity of antioxidant enzymes, plant tissue hydration, osmotic potential, and POL). It was found that, in response to salinity, the plants of potato, cv. Lugovskoi, showed a considerable inhibition of growth processes, reduction in chlorophyll a content, and suppression of stolon formation, which points to a rather low salinity tolerance of the cultivar. At the same time, under weak or moderate salt stress, the plants preserved water homeostasis owing to effective osmoregulation, actively accumulated proline that acted as a stress protector, and showed hardly any signs of oxidative stress. It was assumed that low salt tolerance of this cultivar depends on the inability of its root system to retain sodium ions and ensure selective ion transport to the aboveground part of the plant and on inefficiency of the system of sodium ions’ removal from the cytoplasm of leaf cells and their compartmentalization in the central vacuole with the purpose of reducing their toxic effect. The obtained results may be useful for working out a technique of improving salt tolerance of this cultivar by the methods of molecular genetics.
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Claims 8
Claim · model-written summary
Salinity inhibited growth processes in Lugovskoi potato.
- Taxon
- potato
Solanum tuberosume0 - Material
- Lugovskoie0
- Treatment
- salinitye0
- Outcome
- growth processese0
- Direction
- inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in response to salinity, the plants of potato, cv. Lugovskoi, showed a considerable inhibition of growth processes”
Claim · model-written summary
Salinity reduced chlorophyll a content in Lugovskoi potato.
- Taxon
- potatoSolanum tuberosume0
- Material
- Lugovskoie0
- Treatment
- salinitye0
- Outcome
- chlorophyll a contente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in response to salinity, the plants of potato, cv. Lugovskoi, showed a considerable inhibition of growth processes, reduction in chlorophyll a content”
Claim · model-written summary
Salinity suppressed stolon formation in Lugovskoi potato.
- Taxon
- potatoSolanum tuberosume0
- Material
- Lugovskoie0
- Treatment
- salinitye0
- Outcome
- stolon formatione0
- Direction
- suppressione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in response to salinity, the plants of potato, cv. Lugovskoi, showed a considerable inhibition of growth processes, reduction in chlorophyll a content, and suppression of stolon formation”
Claim · model-written summary
Under weak or moderate salt stress, potato plants preserved water homeostasis through osmoregulation.
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- weak or moderate salt stresse0
- Outcome
- preserved water homeostasise0
- Qualifier
- effective osmoregulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under weak or moderate salt stress, the plants preserved water homeostasis owing to effective osmoregulation”
t0“Solanum tuberosum L.”
Claim · model-written summary
Under weak or moderate salt stress, potato plants accumulated proline.
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Treatment
- weak or moderate salt stresse0
- Outcome
- prolinee0
- Direction
- accumulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under weak or moderate salt stress, the plants preserved water homeostasis owing to effective osmoregulation, actively accumulated proline”
t0“Solanum tuberosum L.”
Claim · model-written summary
Under weak or moderate salt stress, potato plants showed hardly any oxidative stress.
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Outcome
- signs of oxidative stresse0
- Direction
- hardly anye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showed hardly any signs of oxidative stress”
t0“Solanum tuberosum L.”
Claim · model-written summary
The authors attributed low salt tolerance to poor root retention and transport of sodium ions.
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Organ / stage
- root systeme0
- Compound
- sodium ionse0
- Outcome
- low salt tolerancee0
- Qualifier
- inability of its root system to retain sodium ions and ensure selective ion transporte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low salt tolerance of this cultivar depends on the inability of its root system to retain sodium ions and ensure selective ion transport to the aboveground part of the plant”
t0“Solanum tuberosum L.”
Claim · model-written summary
The authors also attributed low salt tolerance to ineffective removal and compartmentalization of sodium ions in leaf cells.
- Taxon
- Solanum tuberosum L.Solanum tuberosumt0
- Organ / stage
- leaf cellse0
- Compound
- sodium ionse0
- Outcome
- inefficiency of the system of sodium ions’ removale0
- Qualifier
- their compartmentalization in the central vacuolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inefficiency of the system of sodium ions’ removal from the cytoplasm of leaf cells and their compartmentalization in the central vacuole”
t0“Solanum tuberosum L.”
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See all 6 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.