Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato

The use of seaweed-derived biostimulants has gained attention as a sustainable strategy to enhance crop production. Brown seaweeds, in particular, are rich in bioactive compounds that can improve plant growth, yield, and quality parameters. This study investigated the biostimulant potential of extra...

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Main Authors: Yagmur Arikan-Algul, Hande Mutlu-Durak, Umit Baris Kutman, Bahar Yildiz Kutman
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Agronomy
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Online Access:https://www.mdpi.com/2073-4395/15/5/1138
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author Yagmur Arikan-Algul
Hande Mutlu-Durak
Umit Baris Kutman
Bahar Yildiz Kutman
author_facet Yagmur Arikan-Algul
Hande Mutlu-Durak
Umit Baris Kutman
Bahar Yildiz Kutman
author_sort Yagmur Arikan-Algul
collection DOAJ
description The use of seaweed-derived biostimulants has gained attention as a sustainable strategy to enhance crop production. Brown seaweeds, in particular, are rich in bioactive compounds that can improve plant growth, yield, and quality parameters. This study investigated the biostimulant potential of extracts derived from <i>Cystoseira barbata</i> for promoting tomato growth and improving fruit quality. Three different extracts (water, alkali, and acid), applied as soil drenches, were tested on a determinate tomato cultivar under greenhouse conditions. In young plants, alkali and acid extracts increased stem length by 40% and 60%, respectively, while water and acid extracts accelerated early flowering. Alkali and acid extracts also improved fruit yield by approximately 65%. Additionally, all extracts enhanced fruit quality by increasing fruit EC and Brix values, soluble carbohydrate levels, total phenolic content, total antioxidant capacity, lycopene and β-carotene concentrations, and vitamin C content, albeit to varying degrees. Along with increases in fruit K concentration in response to water and alkali extracts, all seaweed extract-treated groups showed elevated fruit S concentrations, accompanied by increases in reduced glutathione levels. These results indicate that <i>C. barbata</i> extracts can enhance plant performance while improving the nutritional and nutraceutical properties of tomato fruits. The observed effects were strongly influenced by the extraction method, which alters the extract composition. Extracts from sustainably sourced <i>C. barbata</i> may contribute to improved productivity and quality in horticulture; however, further research is needed to enable the standardized production of <i>C. barbata</i>, optimize biostimulant formulations, and validate their effectiveness under field conditions.
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spelling doaj-art-67531c1b0bd34bb99332c6d1a3eeb2cf2025-08-20T03:14:29ZengMDPI AGAgronomy2073-43952025-05-01155113810.3390/agronomy15051138Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown TomatoYagmur Arikan-Algul0Hande Mutlu-Durak1Umit Baris Kutman2Bahar Yildiz Kutman3Institute of Biotechnology, Gebze Technical University, Gebze 41400, Kocaeli, TürkiyeInstitute of Biotechnology, Gebze Technical University, Gebze 41400, Kocaeli, TürkiyeInstitute of Biotechnology, Gebze Technical University, Gebze 41400, Kocaeli, TürkiyeInstitute of Biotechnology, Gebze Technical University, Gebze 41400, Kocaeli, TürkiyeThe use of seaweed-derived biostimulants has gained attention as a sustainable strategy to enhance crop production. Brown seaweeds, in particular, are rich in bioactive compounds that can improve plant growth, yield, and quality parameters. This study investigated the biostimulant potential of extracts derived from <i>Cystoseira barbata</i> for promoting tomato growth and improving fruit quality. Three different extracts (water, alkali, and acid), applied as soil drenches, were tested on a determinate tomato cultivar under greenhouse conditions. In young plants, alkali and acid extracts increased stem length by 40% and 60%, respectively, while water and acid extracts accelerated early flowering. Alkali and acid extracts also improved fruit yield by approximately 65%. Additionally, all extracts enhanced fruit quality by increasing fruit EC and Brix values, soluble carbohydrate levels, total phenolic content, total antioxidant capacity, lycopene and β-carotene concentrations, and vitamin C content, albeit to varying degrees. Along with increases in fruit K concentration in response to water and alkali extracts, all seaweed extract-treated groups showed elevated fruit S concentrations, accompanied by increases in reduced glutathione levels. These results indicate that <i>C. barbata</i> extracts can enhance plant performance while improving the nutritional and nutraceutical properties of tomato fruits. The observed effects were strongly influenced by the extraction method, which alters the extract composition. Extracts from sustainably sourced <i>C. barbata</i> may contribute to improved productivity and quality in horticulture; however, further research is needed to enable the standardized production of <i>C. barbata</i>, optimize biostimulant formulations, and validate their effectiveness under field conditions.https://www.mdpi.com/2073-4395/15/5/1138biostimulant<i>Cystoseira barbata</i> (synonym: <i>Gongolaria barbata</i>)fruit qualityseaweed extractsustainable agriculturesoil drench
spellingShingle Yagmur Arikan-Algul
Hande Mutlu-Durak
Umit Baris Kutman
Bahar Yildiz Kutman
Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
Agronomy
biostimulant
<i>Cystoseira barbata</i> (synonym: <i>Gongolaria barbata</i>)
fruit quality
seaweed extract
sustainable agriculture
soil drench
title Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
title_full Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
title_fullStr Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
title_full_unstemmed Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
title_short Biostimulant Extracts Obtained from the Brown Seaweed <i>Cystoseira barbata</i> Enhance the Growth, Yield, Quality, and Nutraceutical Value of Soil-Grown Tomato
title_sort biostimulant extracts obtained from the brown seaweed i cystoseira barbata i enhance the growth yield quality and nutraceutical value of soil grown tomato
topic biostimulant
<i>Cystoseira barbata</i> (synonym: <i>Gongolaria barbata</i>)
fruit quality
seaweed extract
sustainable agriculture
soil drench
url https://www.mdpi.com/2073-4395/15/5/1138
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