Abstract
The effect of salinity on growth, photosynthetic pigment content, and alkaloid secondary metabolite accumulation were studied in an economically important medicinal plant, Catharanthus roseus (L.) G. Don., under pot culture conditions. Plants were treated with different concentrations of NaCl, (e.g. 50 and 100 mM) 30, 45, 60, and 75 days after sowing (DAS). The plants were uprooted randomly 90 DAS to analyse growth, and chlorophyll and alkaloid content. Salinity affected all the morphological parameters and decreased growth performance. At low salinity regimes, a slight decrease was noted in chlorophyll a and b, and total chlorophyll content, but under high salinity conditions a significant reduction in the content of these pigments was observed. The chlorophyll a:chlorophyll b ratio also varied significantly under salinity stress. Alkaloid content increased under saline soil conditions.
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Claims 5
Claim · model-written summary
Salinity reduced growth performance.
- Taxon
- Catharanthus roseus
Catharanthus roseust0 - Treatment
- Salinitye0
- Outcome
- growth performancee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity affected all the morphological parameters and decreased growth performance.”
t0“Catharanthus roseus”
Claim · model-written summary
Low salinity slightly reduced chlorophyll a, chlorophyll b and total chlorophyll.
- Taxon
- Catharanthus roseusCatharanthus roseust0
- Treatment
- low salinity regimese0
- Outcome
- chlorophyll a and b, and total chlorophyll contente0
- Direction
- decreasee0
- Qualifier
- slighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At low salinity regimes, a slight decrease was noted in chlorophyll a and b, and total chlorophyll content”
t0“Catharanthus roseus”
Claim · model-written summary
High salinity significantly reduced chlorophyll pigments.
- Taxon
- Catharanthus roseusCatharanthus roseust0
- Treatment
- high salinity conditionse0
- Outcome
- content of these pigmentse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under high salinity conditions a significant reduction in the content of these pigments was observed”
t0“Catharanthus roseus”
Claim · model-written summary
The chlorophyll a:chlorophyll b ratio varied significantly under salinity stress.
- Taxon
- Catharanthus roseusCatharanthus roseust0
- Treatment
- salinity stresse0
- Outcome
- chlorophyll a:chlorophyll b ratioe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chlorophyll a:chlorophyll b ratio also varied significantly under salinity stress.”
t0“Catharanthus roseus”
Claim · model-written summary
Alkaloid content increased under saline soil conditions.
- Taxon
- Catharanthus roseusCatharanthus roseust0
- Treatment
- saline soil conditionse0
- Outcome
- Alkaloid contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alkaloid content increased under saline soil conditions.”
t0“Catharanthus roseus”
The same questions in other papers
salinity · growth · Catharanthus roseus (Madagascar periwinkle)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- negative
3 papers more in this group
See all 7 papers →salinity · quality: phytochemicals · Catharanthus roseus (Madagascar periwinkle)Results agree
1 paper in the same direction as this paper
- positive
salinity · physiology: pigments · Catharanthus roseus (Madagascar periwinkle)Results agree
2 papers in the same direction as this paper
- negative
- 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.