Abstract
Tomatoes are the most important and grown vegetable crop in the world. The salicylic acid (SA) application could improve crop yields due the positive physiological effects of this plant growth regulator. Thus, this study aimed to evaluate the possible effects of SA application on leaf regarding the intensification of antioxidant enzymes activities, chlorophyll a fluorescence, gas exchange, and tomato production against environmental stress. This experiment was conducted by the use of Colossal tomato hybrid in a protected environment between July and December 2019. Therefore, a randomized block design with five SA doses was used, as follows: 0; 0.5; 1; 1.5, and 2 mM. Then, applications were performed weekly from 15 to 60 days after transplantation (DAT). At the 45th and the 60th DAT, the enzymes activities were analysed, such as superoxide dismutase (SOD), catalase activity (CAT) and peroxidase (POD), lipid peroxidation, proline content, chlorophyll a fluorescence, gas exchange, and plant height. At the end of the experiment, fruit weight, total and commercial production were also evaluated. Results indicated that foliar application of SA reduced the environmental stress in plants through the intensification of antioxidant system that reduced lipid peroxidation and qNP and increased the efficiency of photosystem II and ETR. Furthermore, gas exchange was also influenced by the action of SA in gs, favouring A and A/Ci. The SA dose between 0.5 and 0.8 mM positively enabled the total and commercial production of tomatoes. Therefore, foliar application of SA reduced oxidative damage, and increased photosynthetic efficiency and fruit production.
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Claims 4
Claim · model-written summary
Foliar salicylic acid reduced tomato lipid peroxidation and qNP.
- Taxon
- tomato plants
Solanum lycopersicumt0 - Treatment
- foliar application of SAe0
- Outcome
- lipid peroxidation and qNPe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application of SA reduced the environmental stress in plants through the intensification of antioxidant system that reduced lipid peroxidation and qNP”
t0“tomato plants”
Claim · model-written summary
Foliar salicylic acid increased photosystem II efficiency and ETR.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Treatment
- Foliar application of salicylic acidt0
- Outcome
- efficiency of photosystem II and ETRe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the efficiency of photosystem II and ETR”
t0“Foliar application of salicylic acid intensifies antioxidant system and photosynthetic efficiency in tomato plants”
Claim · model-written summary
Salicylic acid influenced gs, favoring A and A/Ci.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Treatment
- SAe0
- Outcome
- gs, favouring A and A/Cie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gas exchange was also influenced by the action of SA in gs, favouring A and A/Ci”
t0“tomato plants”
Claim · model-written summary
Salicylic acid at 0.5 to 0.8 mM benefited total and commercial tomato production.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- SA dose between 0.5 and 0.8 mMe0
- Outcome
- total and commercial productione0
- Direction
- positively enablede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The SA dose between 0.5 and 0.8 mM positively enabled the total and commercial production of tomatoes.”
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