Abstract
Drought stress is a major environmental stress that restricts plant growth and production in the majority of agricultural fields of the world. The application of different fertilizers, especially biofertilizers and organic fertilizers, might play an important role in the production of medicinal plants in order to improve their resistance to deficit water stress. In order to evaluate the effects of fertilizer treatments on antioxidant enzyme activity and physiological characteristics of basils (Ocimum basilicum L.) under water-limited conditions, a study was arranged as a factorial layout based on a randomized complete block design with three replications. Two irrigation intervals (6, and 12 days) and six fertilizers levels [chemical fertilizers (N, P, K), vermicompost (10 t ha-1) + mycorrhizal fungi (Glomus intraradices), vermicompost +bacterial biofertilizer [Azetobarvar1 (Azotobacter vinelandii as nitrogen-fixing bacteria), Phosphatebarvar2 (Pseudomonas putida and Bacillus lentus as phosphorus solubilizing bacteria), Pota barvar-2 (Pseudomonas koreensis and Pseudomonas vancouverensis as potassium releasing bacteria)], bacterial biofertilizer+mycorrhizal fungi, chemical fertilizers 50% (Basic NPK fertilizer was applied at the rate of 90–120–100 kg/ha in the form of urea, triple super phosphate, and potassium sulfate, respectively)+ bacterial biofertilizer and control] were assigned as the first and second experimental factors, respectively. The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased. But, the application of fertilizer sources alleviated the drought effects, so the application of fertilizers (especially chemical fertilizers 50% + bacterial biofertilizer) increased these traits at all irrigation levels. Overall, in addition to cellular mechanisms, such as osmoregulation and antioxidant defense, fertilizers sources application can improve antioxidant activities and physiological traits of basil under water-limited conditions.
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Claims 6
Claim · model-written summary
Water limitation decreased basil chlorophyll content.
- Taxon
- Basil
Ocimum basilicumt0 - Treatment
- water limitatione1
- Outcome
- chlorophyll contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
Claim · model-written summary
Water limitation decreased basil relative water content.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- water limitatione1
- Outcome
- relative water contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
Claim · model-written summary
Water limitation increased basil carotenoids.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- water limitatione1
- Outcome
- carotenoidse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
Claim · model-written summary
Water limitation increased catalase, superoxide dismutase, and peroxidase activities.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- water limitatione1
- Outcome
- antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase)e1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
Claim · model-written summary
Water limitation increased basil proline and sugar contents.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- water limitatione1
- Outcome
- osmolytes (proline and sugar) contentse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results showed that water limitation decreased the chlorophyll content and relative water content, but carotenoids and antioxidantenzyme activities (catalase, superoxide dismutase, and peroxidase) and also osmolytes (proline and sugar) contents were increased.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
Claim · model-written summary
Fertilizer sources alleviated basil drought effects and increased physiological traits, especially half-rate chemical fertilizer plus bacterial biofertilizer.
- Taxon
- BasilOcimum basilicumt0
- Treatment
- chemical fertilizers 50% + bacterial biofertilizere1
- Outcome
- these traitse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“But, the application of fertilizer sources alleviated the drought effects, so the application of fertilizers (especially chemical fertilizers 50% + bacterial biofertilizer) increased these traits at all irrigation levels.”
t0“Effects of Fertilizer Treatments on Antioxidant Activities and Physiological Traits of Basil (Ocimum basilicum L.) under Water Limitation Conditions”
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See all 5 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.