Abstract
ABSTRACT Salinity is an abiotic factor that impairs the growth and physiological, biochemical, and molecular mechanisms of plants. Among plants, soybeans are an important crop worldwide, so managing abiotic factors is essential to mitigate plant damage. However, biostimulants, such as melatonin, are being employed to alleviate the stress caused by these factors. Therefore, this study aimed to evaluate the growth, photosynthetic pigments, and water relations of soybean plants subjected to salinity levels and exogenous melatonin application. The research was conducted in experimental area belonging to the Federal Rural University of the Semi-Arid Region, Mossoró, RN, Brazil. The experimental design was randomized blocks, arranged in a 3 x 3 factorial scheme (three salinity levels in the irrigation water - 0.50, 3.00, and 5.00 dS m-1 and three melatonin concentrations - 0, 0.5, and 1 mM) with three replications. At 47 days after planting, plant height, stem diameter, number of leaves, root length, chlorophyll content (a, b, and total), relative water content, leaf moisture, and electrolyte leakage were evaluated. Soybean plants tolerated the effects of salinity on growth aspects, photosynthetic pigments, and water relations up to 3.00 dS m-1, regardless of melatonin concentration. Exogenous application of melatonin mitigated the effects of salt stress on chlorophyll b and relative water content at salinity level of 5.00 dS m-1 and concentration of 1 mM.
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Claims 3
Claim · model-written summary
Soybean tolerated salinity through 3.00 dS m-1 for growth traits, pigments and water relations regardless of melatonin.
- Taxon
- Soybean
Glycine maxe0 - Outcome
- growth aspects, photosynthetic pigments, and water relationse0
- Qualifier
- up to 3.00 dS m-1, regardless of melatonin concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants tolerated the effects of salinity on growth aspects, photosynthetic pigments, and water relations up to 3.00 dS m-1, regardless of melatonin concentration.”
Claim · model-written summary
At 5.00 dS m-1, 1 mM melatonin mitigated salt effects on chlorophyll b.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Exogenous application of melatonine0
- Outcome
- chlorophyll be0
- Direction
- mitigatede0
- Qualifier
- salinity level of 5.00 dS m-1 and concentration of 1 mMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of melatonin mitigated the effects of salt stress on chlorophyll b and relative water content at salinity level of 5.00 dS m-1 and concentration of 1 mM.”
t0“soybean”
Claim · model-written summary
At 5.00 dS m-1, 1 mM melatonin mitigated salt effects on relative water content.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Exogenous application of melatonine0
- Outcome
- relative water contente0
- Direction
- mitigatede0
- Qualifier
- salinity level of 5.00 dS m-1 and concentration of 1 mMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous application of melatonin mitigated the effects of salt stress on chlorophyll b and relative water content at salinity level of 5.00 dS m-1 and concentration of 1 mM.”
t0“soybean”
The same questions in other papers
melatonin · physiology: water · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
melatonin · physiology: pigments · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.