Inferências filogenéticas na ordem Fucales (Phaeophyceae), com ênfase no gênero Sargassum C. Agardh do Atlântico Sul

Coimbra, Cíntia Schultz

doi:10.11606/t.41.2006.tde-22082007-101454

Cited by 6 publications

(9 citation statements)

References 12 publications

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“…Economically, species of the genus Sargassum, including the species Sargassum muticum, are used as a source of alginate and bioactive compounds that can be applied in the textile, food and pharmaceutical industry. McHugh (2003) and Coimbra (2006) reported that, in certain parts of the world, this species could be used as agricultural fertilizer.…”

Section: Introductionmentioning

confidence: 99%

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

2019

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Oceans and seas form a large body of water that contains a natural biodiversity. For humans, represents a resource, which makes this a point of interest, from researches to improve the economy. Seaweeds produce many compounds and secondary metabolites that can be used in different fields of industry such as food, agricultural, pharmaceutical and health. Even though seaweeds are ancestral resources, recently it was notorious a global interest in knowing more about its potentials, where biotechnology plays an important role in research. Studies showed that seaweed has many bioactive compounds beneficial to plant development, giving them a great potential as an agricultural fertilizer. Adding seaweeds to the soil provides organic matter, minerals, trace elements, growth plant regulator, metabolites, vitamins, and amino acids and it can work as a soil conditioner. In Portugal, the use of seaweeds for agriculture is important since long time ago. In the past, populations that lived near coastal zone depended on the seaweeds as a family subsistence but, throughout the years, synthetic fertilizers replaced seaweeds. Our work aimed to assess the potential of the extracts obtained from Ascophyllum nodosum and from Sargassum muticum as an agricultural fertilizer. This evaluation was carried out with rice plants (Oryza sativa) and lettuce (Lactuca sativa), in germination bioassays, the culture of rice and lettuce plants in pots, and culture of lettuce plants in hydroponics. For that, seaweed liquid extracts were used in different concentrations in different bioassays. Results show that extracts obtained from two seaweeds, A. nodosum and S. muticum, can be promissory plant biofertilizer at a concentration of 25% and had a positive effect on seed germination, plant development, and production.

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Section: Introductionmentioning

confidence: 99%

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

2019

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“…Representatives of this genus have oogamous reproduction, and it is often the only form of reproduction [1]. Zygotes formed after fertilization remain attached to the receptacle by mucilage until they reach a more advanced stage of cell division [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Brefeldin A on the Development of <i>Sargassum cymosum</i> Zygotes (Phaeophyceae, Fucales): Structural and Ultrasctructural Analysis

Rover¹,

Bouzon²,

Simioni³

2020

AJPS

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To evaluate the effects of brefeldin A (BFA) on Golgi bodies and indirectly on the polarized development of S. cymosum zygotes, zygotes were cultured at concentrations of 4 µM, 8 µM, 16 µM and 32 µM of BFA, prepared in sterilized seawater. After 12 hours, the samples were fixed and processed for transmission electron microscopy (TEM), confocal laser scanning microscopy, light microscopy and cell counting. For recovery analysis, after treatment, the samples were again placed in sterile seawater for over 12 hours. In the control, after 12 hours, the embryos were adhered and with advanced stage of development, presenting up to 6 cell divisions. In the treated samples, the embryos did not adhere and only in the lower concentrations were they visualized with cellular divisions, is that in the highest concentration, the majority of the zygotes were dead. After recovery, embryos showed development only in the lowest concentrations. By confocal microscopy, the treated samples had an irregular distribution of chloroplasts and physodes. Also through TEM, it was possible to observe the loss of organization of Golgi bodies, in turn leading to the formation of vesicles and fusion of physodes. We can conclude that Golgi bodies are responsible for the production and secretion of molecules related to the adhesion and formation of cell wall membrane, also aiding in the polarization and orientation of physodes. The fused physodes occupied much of the cytoplasm, preventing other cytoplasmic processes, thus directly affecting the development of this alga. How to cite this paper: Rover, T., Bouzon, Z.L. and Simioni, C. (2020) Effect of Brefeldin A on the Development of Sargassum cymosum Zygotes (Phaeophyceae, Fucales): Structural and Ultrasctructural Analysis. American Journal of Plant Sciences, 11, 245-261.

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“…Estas técnicas têm sido cada vez mais empregadas conjuntamente aos estudos morfo-anatômicos em uma série de trabalhos recentes. Os que incluem espécimes baianos costumam tratar de revisões de gêneros selecionados: Coimbra (2006), para Sargassum; para Caulerpa, Carvalho (2008) para Codium; Cassano (2009), para Laurencia;Bellorín (2002) para algas gracilarióides.…”

Section: Revisão Do Conhecimento Da Macroflora Marinha Das áReas De Estudo E Regiões Circunvizinhasunclassified

“…O gênero Sargassum, apesar de bastante conhecido e figurando em praticamente todos os trabalhos florísticos do país, não deixa de ser um grupo controverso dada a enorme plasticidade e também as evidências de hibridação entre espécies distintas. A tentativa mais recente de esclarecer os problemas taxonômicos das espécies no país foi feita por Coimbra (2006) com cinco táxons, mas os resultados não foram conclusivos dada a baixa especificidade dos marcadores utilizados. Até que se realizem outros trabalhos moleculares, o trabalho de Fortes- Xavier (2000) durante extensiva revisão do gênero no país é a fonte mais elucidativa, a qual utilizamos como base no presente estudo.…”

Section: Descrição Da Espécieunclassified

Flora de macrófitas marinhas do arquipélago de Abrolhos e do recife Sebastião Gomes (BA)

Torrano-Silva¹

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Inferências filogenéticas na ordem Fucales (Phaeophyceae), com ênfase no gênero Sargassum C. Agardh do Atlântico Sul

Cited by 6 publications

References 12 publications

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

Effect of Brefeldin A on the Development of <i>Sargassum cymosum</i> Zygotes (Phaeophyceae, Fucales): Structural and Ultrasctructural Analysis

Flora de macrófitas marinhas do arquipélago de Abrolhos e do recife Sebastião Gomes (BA)

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Inferências filogenéticas na ordem Fucales (Phaeophyceae), com ênfase no gênero Sargassum C. Agardh do Atlântico Sul

Cited by 6 publications

References 12 publications

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

Production of bio-fertilizer from Ascophyllum nodosum and Sargassum muticum (Phaeophyceae)

Effect of Brefeldin A on the Development of &lt;i&gt;Sargassum cymosum&lt;/i&gt; Zygotes (Phaeophyceae, Fucales): Structural and Ultrasctructural Analysis

Flora de macrófitas marinhas do arquipélago de Abrolhos e do recife Sebastião Gomes (BA)

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Effect of Brefeldin A on the Development of <i>Sargassum cymosum</i> Zygotes (Phaeophyceae, Fucales): Structural and Ultrasctructural Analysis