ACC deaminase-producing bacteria mitigate water deficit in tomato seeds
ABSTRACT: Bacteria that modulate ethylene levels through the enzyme 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase are a promising strategy to mitigate the effects of water stress. The aim of this study was to assess the effect of these bacteria on the germination and growth of tomato seedlin...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Tecnologia de Sementes
2025-06-01
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| Series: | Journal of Seed Science |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372025000100211&lng=en&tlng=en |
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| _version_ | 1849723701793128448 |
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| author | Helena Souza Nascimento Santos Regina Cássia Ferreira Ribeiro Andréia Márcia de Souza David José Augusto dos Santos Neto Adelica Aparecida Xavier João Rafael Prudêncio Santos |
| author_facet | Helena Souza Nascimento Santos Regina Cássia Ferreira Ribeiro Andréia Márcia de Souza David José Augusto dos Santos Neto Adelica Aparecida Xavier João Rafael Prudêncio Santos |
| author_sort | Helena Souza Nascimento Santos |
| collection | DOAJ |
| description | ABSTRACT: Bacteria that modulate ethylene levels through the enzyme 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase are a promising strategy to mitigate the effects of water stress. The aim of this study was to assess the effect of these bacteria on the germination and growth of tomato seedlings subjected to water deficit. The experiment was conducted using a completely randomized design and 6x5 factorial scheme, with six seed treatments (four bacterial isolates and two controls) and five PEG 6000-induced osmotic potentials (0.0, -0.2, -0.4, -0.6, and -0.8 MPa), with four replications of 50 seeds. Germination, radicle protrusion, first germination count (FGC), germination speed index (GSI), and the fresh weight, root and shoot length of seedlings were evaluated. The results indicated that bacteria with ACC-deaminase activity favored germination and seedling development under water stress. Although water deficit reduced germination, isolate RZ-1 effectively mitigated these effects at -0.4 MPa. Strains E-154 and E-24 promoted the highest root and shoot growth. |
| format | Article |
| id | doaj-art-2da6dfe3b9a8498d852dfa894c7fef4b |
| institution | DOAJ |
| issn | 2317-1545 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Associação Brasileira de Tecnologia de Sementes |
| record_format | Article |
| series | Journal of Seed Science |
| spelling | doaj-art-2da6dfe3b9a8498d852dfa894c7fef4b2025-08-20T03:10:57ZengAssociação Brasileira de Tecnologia de SementesJournal of Seed Science2317-15452025-06-014710.1590/2317-1545v47292543ACC deaminase-producing bacteria mitigate water deficit in tomato seedsHelena Souza Nascimento Santoshttps://orcid.org/0000-0001-6413-3011Regina Cássia Ferreira Ribeirohttps://orcid.org/0000-0001-5138-8402Andréia Márcia de Souza Davidhttps://orcid.org/0000-0002-2747-5941José Augusto dos Santos Netohttps://orcid.org/0000-0002-8187-2411Adelica Aparecida Xavierhttps://orcid.org/0000-0001-9814-4587João Rafael Prudêncio Santoshttps://orcid.org/0000-0002-8090-9892ABSTRACT: Bacteria that modulate ethylene levels through the enzyme 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase are a promising strategy to mitigate the effects of water stress. The aim of this study was to assess the effect of these bacteria on the germination and growth of tomato seedlings subjected to water deficit. The experiment was conducted using a completely randomized design and 6x5 factorial scheme, with six seed treatments (four bacterial isolates and two controls) and five PEG 6000-induced osmotic potentials (0.0, -0.2, -0.4, -0.6, and -0.8 MPa), with four replications of 50 seeds. Germination, radicle protrusion, first germination count (FGC), germination speed index (GSI), and the fresh weight, root and shoot length of seedlings were evaluated. The results indicated that bacteria with ACC-deaminase activity favored germination and seedling development under water stress. Although water deficit reduced germination, isolate RZ-1 effectively mitigated these effects at -0.4 MPa. Strains E-154 and E-24 promoted the highest root and shoot growth.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372025000100211&lng=en&tlng=enaminocyclopropane-1-carboxylate-deaminaseethyleneosmotic potentialPEG 6000Solanum lycopersicum L |
| spellingShingle | Helena Souza Nascimento Santos Regina Cássia Ferreira Ribeiro Andréia Márcia de Souza David José Augusto dos Santos Neto Adelica Aparecida Xavier João Rafael Prudêncio Santos ACC deaminase-producing bacteria mitigate water deficit in tomato seeds Journal of Seed Science aminocyclopropane-1-carboxylate-deaminase ethylene osmotic potential PEG 6000 Solanum lycopersicum L |
| title | ACC deaminase-producing bacteria mitigate water deficit in tomato seeds |
| title_full | ACC deaminase-producing bacteria mitigate water deficit in tomato seeds |
| title_fullStr | ACC deaminase-producing bacteria mitigate water deficit in tomato seeds |
| title_full_unstemmed | ACC deaminase-producing bacteria mitigate water deficit in tomato seeds |
| title_short | ACC deaminase-producing bacteria mitigate water deficit in tomato seeds |
| title_sort | acc deaminase producing bacteria mitigate water deficit in tomato seeds |
| topic | aminocyclopropane-1-carboxylate-deaminase ethylene osmotic potential PEG 6000 Solanum lycopersicum L |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372025000100211&lng=en&tlng=en |
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