Abstract
Agricultural inputs based on microalgae have been successfully tested at different stages of the crop cycle, from sowing to harvest, to enhance crop performance. In this study, biomass from Nannochloropsis gaditana and Thalassiosira sp. was obtained to evaluate its effect on wheat seed germination under two temperature conditions. Microalgal biomass was produced under controlled conditions (neutral pH, air flow of 1 L·min−1, and a dilution rate of 0.2 day−1). The biomass was characterized for its lipid, carbohydrate, protein, and ash content. Subsequently, its effect on germination, as well as on glucose and amylose content in wheat seedlings, was assessed. Four biomass concentrations were tested (0.0 [distilled water], 0.5, 1.0, and 1.5 g·L−1) at two incubation temperatures (25 and 35 °C). Results showed that Thalassiosira sp. lightly promoted the germination rate more than N. gaditana. Germination parameters were negatively affected by high temperature, but treatments with Thalassiosira sp. alleviated this effect, showing values comparable to those obtained at the optimal temperature. Vigor parameters were improved compared with the control in both temperatures. Glucose and amylose contents exhibited irregular but consistent patterns. However, at a temperature of 35 °C, a slight conversion of starch to glucose could be observed. Overall, microalgal biomass did not significantly improve germination or its time variables, but it could exert a protective effect against high-temperature stress, particularly in the case of Thalassiosira sp.
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Claims 8
Claim · model-written summary
Thalassiosira promoted wheat germination rate slightly more than N. gaditana.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- Thalassiosira sp.e0
- Interactor
- Thalassiosira sp.Thalassiosirae0other
- Outcome
- germination ratee0
- Direction
- more thane0
- Comparator
- N. gaditanae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Thalassiosira sp. lightly promoted the germination rate more than N. gaditana”
t0“Wheat”
Claim · model-written summary
High temperature negatively affected wheat germination parameters.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- high temperaturee0
- Outcome
- Germination parameterse0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Germination parameters were negatively affected by high temperature”
t0“Wheat”
Claim · model-written summary
Thalassiosira treatments alleviated high-temperature effects on wheat germination.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- Thalassiosira sp.e0
- Interactor
- Thalassiosira sp.Thalassiosirae0other
- Outcome
- valuese0
- Direction
- alleviatede0
- Comparator
- optimal temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments with Thalassiosira sp. alleviated this effect, showing values comparable to those obtained at the optimal temperature”
t0“Wheat”
Claim · model-written summary
Microalgal treatments improved wheat seedling vigor compared with controls at both temperatures.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- Vigor parameterse0
- Direction
- improvede0
- Qualifier
- both temperaturese0
- Comparator
- controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vigor parameters were improved compared with the control in both temperatures”
t0“Wheat”
Claim · model-written summary
Wheat seedling glucose and amylose contents showed irregular but consistent patterns.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- Glucose and amylose contentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glucose and amylose contents exhibited irregular but consistent patterns”
t0“Wheat”
Claim · model-written summary
At 35 °C, wheat seedlings showed slight starch-to-glucose conversion.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- conversion of starch to glucosee0
- Qualifier
- 35 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at a temperature of 35 °C, a slight conversion of starch to glucose could be observed”
t0“Wheat”
Claim · model-written summary
Overall, microalgal biomass did not significantly improve wheat germination or timing.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- microalgal biomasse0
- Outcome
- germination or its time variablese0
- Direction
- did not significantly improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“microalgal biomass did not significantly improve germination or its time variables”
t0“Wheat”
Claim · model-written summary
The authors suggest biomass, especially Thalassiosira, could protect wheat from heat stress.
- Taxon
- WheatTriticum aestivumt0
- Interactor
- Thalassiosira sp.Thalassiosirae0other
- Outcome
- protective effect against high-temperature stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it could exert a protective effect against high-temperature stress, particularly in the case of Thalassiosira sp.”
t0“Wheat”
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heat · growth · Triticum aestivum (wheat)Positive and negative results
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