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<p><i>Eugenia</i> is an important genus in the Atlantic rainforest, known for producing desiccation-sensitive (DS) seeds that are challenging to conserve. Due to the unique structure of <i>Eugenia astringens</i> seeds, they require innovative methods for preservation. This study investigated whether two phosphatidic acid inhibitors, N-acylethanolamine (NAE) and 1-butanol (1-BUT), could reduce desiccation sensitivity in these seeds. Seeds were pre-treated with NAE, 1-BUT, or water and then subjected to desiccation. We evaluated germination percentage and speed, electrolytic leakage (EL), the antioxidant enzymes ascorbate peroxidase (APX), catalase (CAT) and superoxide dismutase (SOD), the lipid peroxidation (MDA) and the polyamines (PAs) putrescine, spermidine and spermine. Seeds pre-treated with 1-BUT or water retained significantly higher germination rates under desiccation, alongside decreased EL and MDA. These treatments also promoted changes in SOD, CAT and PAs, contributing to the&#xa0;mitigation of the oxidative stress induced by desiccation. This study provides new possibilities for improving the viability of DS seeds, with the implications for the conservation of <i>E. astringens</i> and other species with similar preservation&#xa0;challenges.</p>

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1-butanol and water increase Eugenia astringens (Myrtaceae) seed germination after desiccation

  • 期刊论文

  • 发表日期：

    2025年3月7日

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  • Guilherme Almeida Garcia Rodrigues,
  • Neusa Steiner

摘要

Eugenia is an important genus in the Atlantic rainforest, known for producing desiccation-sensitive (DS) seeds that are challenging to conserve. Due to the unique structure of Eugenia astringens seeds, they require innovative methods for preservation. This study investigated whether two phosphatidic acid inhibitors, N-acylethanolamine (NAE) and 1-butanol (1-BUT), could reduce desiccation sensitivity in these seeds. Seeds were pre-treated with NAE, 1-BUT, or water and then subjected to desiccation. We evaluated germination percentage and speed, electrolytic leakage (EL), the antioxidant enzymes ascorbate peroxidase (APX), catalase (CAT) and superoxide dismutase (SOD), the lipid peroxidation (MDA) and the polyamines (PAs) putrescine, spermidine and spermine. Seeds pre-treated with 1-BUT or water retained significantly higher germination rates under desiccation, alongside decreased EL and MDA. These treatments also promoted changes in SOD, CAT and PAs, contributing to the mitigation of the oxidative stress induced by desiccation. This study provides new possibilities for improving the viability of DS seeds, with the implications for the conservation of E. astringens and other species with similar preservation challenges.