Seaweed extract biofertilizer modulates scarlet eggplant tolerance to salt stress

Fátima, Reynaldo Teodoro de; Nóbrega, Jackson Silva; Lima, Geovani Soares de; Soares, Lauriane Almeida dos Anjos; Pereira, Micaela Benigna; Ribeiro, João Everthon da Silva; Gheyi, Hans Raj; Pereira, Walter Esfrain

doi:10.1080/15324982.2023.2224272

Cited by 2 publications

(2 citation statements)

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“…(2023) with reductions in growth and gas exchange of more than 10% observed when soil salinity was above 1.37 dS m -1 . Interestingly, stomatal conductance was enhanced by salinity, an increase explained by the energy re-deployment from plant growth to stomatal dynamics ( de Fatima et al., 2023 ). In contrast, a decrease in stomatal conductance and photosynthetic parameters were noted in another African eggplant cultivar under heat ( Nkansah, 2001 ).…”

Section: Introductionmentioning

confidence: 99%

“…The African eggplant has been selected by the World Vegetable Center as a priority crop for breeding strategies to improve field resilience and diversity (Dinssa et al, 2016). The African eggplant's salinity tolerance was low, however, as reported by de Fatima et al (2023) with reductions in growth and gas exchange of more than 10% observed when soil salinity was above 1.37 dS m -1 . Interestingly, stomatal conductance was enhanced by salinity, an increase explained by the energy re-deployment from plant growth to stomatal dynamics (de Fatima et al, 2023).…”

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Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

David-Rogeat,

Broadley,

Stavridou

2024

Front. Plant Sci.

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Climate change is expected to increase soil salinity and heat-wave intensity, duration, and frequency. These stresses, often present in combination, threaten food security as most common crops do not tolerate them. The African eggplant (Solanum aethiopicum L.) is a nutritious traditional crop found in sub-Saharan Africa and adapted to local environments. Its wider use is, however, hindered by the lack of research on its tolerance. This project aimed to describe the effects of salinity (100 mM NaCl solution) combined with elevated temperatures (27/21°C, 37/31°C, and 42/36°C). High temperatures reduced leaf biomass while cell membrane stability was reduced by salinity. Chlorophyll levels were boosted by salinity only at the start of the stress with only the different temperatures significantly impacted the levels at the end of the experiment. Other fluorescence parameters such as maximum quantum yield and non-photochemical quenching were only affected by the temperature change. Total antioxidants were unchanged by either stress despite a decrease of phenols at the highest temperature. Leaf sodium concentration was highly increased by salinity but phosphorus and calcium were unchanged by this stress. These findings shed new light on the tolerance mechanisms of the African eggplant under salinity and heat. Further research on later developmental stages is needed to understand its potential in the field in areas affected by these abiotic stresses.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

David-Rogeat,

Broadley,

Stavridou

2024

Front. Plant Sci.

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Use of algae extract as an agent to mitigate salt stress in sunflower crop

Luna,

Bezerra,

Lopes

et al. 2024

Rev. bras. eng. agríc. ambient.

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For the use of saline waters in agriculture to be a viable option, solutions must be adopted to mitigate the impacts caused by these waters. In this context, the present study aimed to evaluate the foliar application of algae (Ascophyllum nodosum) extract as a strategy to mitigate the deleterious effects of salinity on the production and post-harvest variables of the ‘BRS 324’ sunflower. The experiment was conducted in a randomized block design with a split-split-plot arrangement, composed of four salinity levels of water (1.2, 3.0, 4.5, and 6.0 dS m-1) and four doses of algae extract (0, 100, 150, and 200% of recommended dose) in two crop cycles, with four blocks. The 100% of the recommended dose (32 mg L-1) of the algae extract positively influenced the 1000-achenes weight (increases of 6.05 and 3.63% for the levels of 1.2 and 3.0 dS m-1, respectively) and the achene yield (increments of 7.07 and 4.59% for the levels of 1.2 and 3.0 dS m-1). The algae extract did not influence the oil and protein content and yield. The increase in salinity levels reduced all variables studied. Algae extract mitigated the deleterious effects of salinity on 1,000-achene weight and yield of achenes at the lowest water salinity level (1.2 dS m-1). The most effective dose of the algae extract to mitigate the negative effects of salinity on the 1,000-achene weight and achene yield was 100% (32 mg L-1) of the recommendation of the extract.

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Seaweed extract biofertilizer modulates scarlet eggplant tolerance to salt stress

Cited by 2 publications

References 27 publications

Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

Heat and salinity stress on the African eggplant F1 Djamba, a Kumba cultivar

Use of algae extract as an agent to mitigate salt stress in sunflower crop

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