Antioxidant enzyme activity and dynamics of reserve mobilization during germination and early seedling establishment of royal poinciana [Delonix regia (Bojer ex Hook.) Raf.]

Barbosa, Lília Cristina de Souza; Zuchi, Jacson; Souza, Mateus da Silva; Souza, Moara Mariely Vinhais; Assis, Nayara Paulla Carvalho; Nascimento, Kelly Juliane Telles; Machado, Mariana; Kuster, Vinícius Coelho; Sales, Juliana de Fátima; Rocha, Diego Ismael

doi:10.1007/s00468-022-02357-2

Cited by 3 publications

(1 citation statement)

References 89 publications

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“…SOD activity has been found to vary between different species and seed tissues during imbibition. In the seeds of the tree species Butia capitata (Bicalho et al, 2018) and Delonix regia (de Souza Barbosa et al, 2022), an increase in SOD activity was observed after 24 hours of imbibition. In the seeds of Lupinus luteus L. there was an increase in SOD activity in the embryonic axes until the emergence of the radicle, while in the cotyledons the activity remained constant Wojtyla, 2008).…”

Section: Discussionmentioning

confidence: 98%

Dormancy breaking and biochemical processes associated with germination of Erythrina falcata Benth. seeds

Artur

Faria

José

et al. 2023

CERNE

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Background:The aim of this research was to investigate the efficiency of methods to overcome primary dormancy and biochemical processes associated with germination of Erythrina falcata Benth seeds. Seeds were submitted to dormancy overcoming treatments and the water uptake pattern was analysed. We then evaluated the activity of the antioxidant enzymes SOD, CAT, and APX, and quantified lipid peroxidation levels, hydrogen peroxide content and total protein content. The experiments were performed in a completely randomized design and the statistical analysis used was Scott-Knott test at 5% probability.Results: Mechanical scarification with sandpaper leads to approximately 94% of germination in E. falcata, while control non-scarified seeds show only approximately 37% of germination. Treatments with hot water led to high mortality in E. falcata seeds. Rapid water absorption was observed in the first 18 hours of imbition when the seeds were scarified with sandpaper, and radicle emergence was observed after 36 hours. During imbibition there was an increase of antioxidant enzyme activity and a decrease in lipid peroxidation and H 2 O 2 production, suggesting an efficient mechanism for regulating imbibition damage. A decrease in the total protein content was observed during germination of E. falcata seeds.Conclusions: Mechanical scarification is an efficient method for breaking dormancy of E. falcata seeds. During germination of E. falcata seeds there is a reduction in the production of H 2 O 2 and lipid peroxidation, and an increase in the activity of antioxidant enzymes. The total protein content decreased along the germination time.

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Section: Discussionmentioning

confidence: 98%

Dormancy breaking and biochemical processes associated with germination of Erythrina falcata Benth. seeds

Artur

Faria

José

et al. 2023

CERNE

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Antagonistic interactions between cytokinin and gibberellin during initial stem growth and leaf structure of royal poinciana [Delonix regia (Bojer ex. Hook.) Raf.]

Medeiros,

Silva,

Sarmento

et al. 2024

Trees

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Understanding the role of storage reserve mobilization during seed germination and initial seedling growth in species of the genus Carapa

de Carvalho,

Nascimento,

Fernandes

et al. 2024

Botany

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A physiological and metabolic database for various species of Amazonian plants is crucial to the species selection and sustainable utilization of their diversity. We hypothesized that understanding the mobilization of Carapa seed reserves and water uptake during germination could provide insights into the physiological behavior and propagation to differentiate species of the same genus. Given this, the mobilization mechanisms of primary reserves, water uptake, and enzymatic activities in seeds of two species of Carapa (C. guianensis and C. vasquezii) were investigated. The lipid content was high in both species, with a value of 63.7±4.7% for C. guianensis and 55±1.5% for C. vasquezii. C. guianensis showed higher values for the other evaluated reserves. The protein profile highlights a band between 15 and 25 kDa in C. guianensis. As for the enzymatic activities investigated (lipase, amylase, protease, acid phosphatase), C. guianensis showed greater activity for most of them, except for acid phosphatase. Overall, the species showed different metabolic strategies and dynamics regarding the water uptake and use of reserves. Our findings indicate that distinct metabolic pathways are employed during the germination and initial seedling growth stages of two Carapa species. This trait can potentially guide the use and preservation of these species.

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Antioxidant enzyme activity and dynamics of reserve mobilization during germination and early seedling establishment of royal poinciana [Delonix regia (Bojer ex Hook.) Raf.]

Cited by 3 publications

References 89 publications

Dormancy breaking and biochemical processes associated with germination of Erythrina falcata Benth. seeds

Dormancy breaking and biochemical processes associated with germination of Erythrina falcata Benth. seeds

Antagonistic interactions between cytokinin and gibberellin during initial stem growth and leaf structure of royal poinciana [Delonix regia (Bojer ex. Hook.) Raf.]

Understanding the role of storage reserve mobilization during seed germination and initial seedling growth in species of the genus Carapa

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