Abstract
The aim of this study was to verify the effects of application of H2O2 on salt tolerance and oil production in basil cv. `Gennaro de Menta? grown in a hydroponic system. Seedlings were subjected to 3 levels of H2O2 (0, 1, and 1000 ?M) in a nutrient solution during 2 different exposure periods (24 and 48 h) and 2 levels of NaCl (0 and 80 mM). The plants were harvested at preflowering (at 15 days) and postflowering (at 25 days). At 25 days, the application of 1 ?M H2O2/48 h and its reapplication at preflowering increased leaf dry mass production compared to the other salt treatments. Relative water content decreased while leaf succulence and sclerophylly index increased with salinity. The increase of succulence was more pronounced with the application of H2O2. Salinity increased the chlorophylls content only in plants without the application of H2O2. Salinity increased Cl?, Na+, and organic solutes content, this effect being more pronounced in salt treatments that received H2O2. Essential oil content, yield, and productivity were induced by salinity and H2O2. This study shows that H2O2 application in nutrient solution for basil cultivation in hydroponic systems using brackish water is a viable technique for promoting biomass or essential oil yield.
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Claims 9
Claim · model-written summary
At 25 days, 1 ?M H2O2 for 48 h with reapplication increased basil leaf dry mass versus other salt treatments.
- Taxon
- basil
Ocimum basilicumt0 - Treatment
- application of 1 ?M H2O2/48 h and its reapplication at prefloweringe0
- Outcome
- leaf dry mass productione0
- Direction
- increasede0
- Value
- 1 ?M H2O2/48 he0
- Comparator
- other salt treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 25 days, the application of 1 ?M H2O2/48 h and its reapplication at preflowering increased leaf dry mass production compared to the other salt treatments.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Salinity decreased relative water content.
- Taxon
- basilOcimum basilicumt0
- Treatment
- salinitye0
- Outcome
- Relative water contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative water content decreased while leaf succulence and sclerophylly index increased with salinity.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Salinity increased leaf succulence and sclerophylly index.
- Taxon
- basilOcimum basilicumt0
- Treatment
- salinitye0
- Outcome
- leaf succulence and sclerophylly indexe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative water content decreased while leaf succulence and sclerophylly index increased with salinity.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
H2O2 made the salinity-associated succulence increase more pronounced.
- Taxon
- basilOcimum basilicumt0
- Treatment
- application of H2O2e0
- Outcome
- succulencee0
- Direction
- more pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of succulence was more pronounced with the application of H2O2.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Salinity increased chlorophyll content only without H2O2.
- Taxon
- basilOcimum basilicumt0
- Treatment
- Salinitye0
- Outcome
- chlorophylls contente0
- Direction
- increasede0
- Qualifier
- without the application of H2O2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased the chlorophylls content only in plants without the application of H2O2.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Salinity increased Cl?, Na+, and organic solutes content.
- Taxon
- basilOcimum basilicumt0
- Treatment
- Salinitye0
- Outcome
- Cl?, Na+, and organic solutes contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity increased Cl?, Na+, and organic solutes content”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
The solute increase was more pronounced with H2O2.
- Taxon
- basilOcimum basilicumt0
- Treatment
- salt treatments that received H2O2e0
- Outcome
- this effecte0
- Direction
- more pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this effect being more pronounced in salt treatments that received H2O2.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
Salinity and H2O2 induced essential oil content, yield and productivity.
- Taxon
- basilOcimum basilicumt0
- Treatment
- salinity and H2O2e0
- Outcome
- Essential oil content, yield, and productivitye0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Essential oil content, yield, and productivity were induced by salinity and H2O2.”
t0“basil (Ocimum basilicum L.)”
Claim · model-written summary
The authors recommend H2O2 application in hydroponic basil with brackish water to promote biomass or oil yield.
- Taxon
- basilOcimum basilicume0
- Treatment
- H2O2 application in nutrient solutione0
- Outcome
- promoting biomass or essential oil yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2O2 application in nutrient solution for basil cultivation in hydroponic systems using brackish water is a viable technique for promoting biomass or essential oil yield.”
The same questions in other papers
salinity · physiology: ion balance · Ocimum basilicum (basil)Positive and negative results
1 in the opposite direction
- negative
salinity · physiology: water · Ocimum basilicum (basil)Positive and negative results
2 in the opposite direction
- negative
- negative
salinity · molecular: metabolites · Ocimum basilicum (basil)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
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.