Abstract
In the Mediterranean area, climate change induces an important increase in soil salinity, which threatens crop production. Here, we aimed to test the impact of severe salt stress on the Alfalfa (Medicago sativa L.) used by Moroccan breeders. Stress was applied by increasing salinity gradually by 8 dS/m. Two weeks later, the root dry weight (RDW) and shoot dry weight (SDW) were measured as morphological parameters. Soluble proteins, total soluble sugars (TSS), and proline contents were quantified in both of leaves and roots parts. Furthermore, Chlorophyll a (Chl a), b (Chl b), and total Chlorophyll (Chl T) contents were quantified in leaves to estimate the salt stress impact on the photosynthetic apparatus. Our results showed a significant decrease in morphological parameters under stress. Additionally, a significant reduction in photosynthetic pigment was recorded. Compared to leaves, important accumulations of proline and soluble protein contents in roots were observed. These results indicate that under salt treatment, alfalfa plants react to salinity by storing many molecules in the roots for planned mobilization after recovery.
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Claims 4
Claim · model-written summary
Salt stress significantly reduced alfalfa root and shoot dry weight.
- Taxon
- Alfalfa (Medicago sativa L.)
Medicago sativae2 - Treatment
- stresse0
- Outcome
- root dry weight (RDW) and shoot dry weight (SDW)e1
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results showed a significant decrease in morphological parameters under stress.”
e1“the root dry weight (RDW) and shoot dry weight (SDW) were measured as morphological parameters.”
e2“Alfalfa (Medicago sativa L.)”
Claim · model-written summary
Salt stress significantly reduced photosynthetic pigments in alfalfa.
- Taxon
- Alfalfa (Medicago sativa L.)Medicago sativae2
- Treatment
- salt stresse1
- Outcome
- photosynthetic pigmente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant reduction in photosynthetic pigment was recorded.”
e1“salt stress impact on the photosynthetic apparatus.”
e2“Alfalfa (Medicago sativa L.)”
Claim · model-written summary
Alfalfa roots accumulated more proline than leaves.
- Taxon
- Alfalfa (Medicago sativa L.)Medicago sativae1
- Organ / stage
- rootse0
- Outcome
- prolinee0
- Direction
- accumulationse0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to leaves, important accumulations of proline and soluble protein contents in roots were observed.”
e1“Alfalfa (Medicago sativa L.)”
Claim · model-written summary
Alfalfa roots accumulated more soluble protein than leaves.
- Taxon
- Alfalfa (Medicago sativa L.)Medicago sativae1
- Organ / stage
- rootse0
- Outcome
- soluble protein contentse0
- Direction
- accumulationse0
- Comparator
- leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to leaves, important accumulations of proline and soluble protein contents in roots were observed.”
e1“Alfalfa (Medicago sativa L.)”
The same questions in other papers
salinity · physiology: photosynthesis · Medicago sativa (alfalfa)Results differ
15 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- negative
13 papers more in this group
See all 17 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.