Essential oils of Ocimum gratissimum and Zingiber officinale as anesthetics for the South American catfish Pseudoplatystoma reticulatum

Aquaculture ◽  
2020 ◽  
Vol 528 ◽  
pp. 735595 ◽  
Author(s):  
Leonardo Augusto da Silva ◽  
Mateus Aranha Martins ◽  
Fayane Espírito Santo ◽  
Fulvia Cristina Oliveira ◽  
Francisco Célio Maia Chaves ◽  
...  
Keyword(s):  
Essential Oils ◽  
Zingiber Officinale ◽  
South American ◽  
The South ◽  
Ocimum Gratissimum

Antimicrobial activity of essential oils from Lippia sidoides, Ocimum gratissimum and Zingiber officinale against Aeromonas spp.

2020 ◽  
pp. 1-10
Author(s):  
Patrícia Castro Monteiro ◽  
Cláudia Majolo ◽  
Francisco Célio Maia Chaves ◽  
Humberto Ribeiro Bizzo ◽  
Fernanda Loureiro Almeida O’Sullivan ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Zingiber Officinale ◽  
Ocimum Gratissimum ◽  
Lippia Sidoides

Anatomy and essential oils from aerial organs in three species of Aldama (Asteraceae - Heliantheae) that have a difficult delimitation

2012 ◽  
Vol 60 (7) ◽  
pp. 632 ◽  
Author(s):  
Aline Bertolosi Bombo ◽  
Tuane Santos De Oliveira ◽  
Adriana Da Silva Santos De Oliveira ◽  
Vera Lúcia Garcia Rehder ◽  
Mara Angelina Galvão Magenta ◽  
...  
Keyword(s):  
Essential Oils ◽  
Glandular Trichomes ◽  
Major Constituent ◽  
South American ◽  
The South ◽  
South American Species ◽  
Histochemical Analysis ◽  
Secretory Structures ◽  
Anatomical Analysis ◽  
Species Distinction

Recently, molecular analysis caused the South American Viguiera Kunth species to be transferred to Aldama La Llave. However, the circumscription has not been established for certain of the South American species, including Aldama filifolia (Sch.Bip. ex Baker) E.E.Schill. & Panero, A. linearifolia (Chodat) E.E.Schill. & Panero and A. trichophylla (Dusén) Magenta (comb. nov.), which had previously been treated as synonyms because of their high similarity. Therefore, the present study aimed to evaluate the anatomy of the aerial organs, and the yield and chemical composition of the essential oils from these three species, to determine the differences among them and thereby assist in species distinction. The anatomical analysis identified characteristics unique to each species, which are primarily related to the position and occurrence of secretory structures. Histochemical analysis demonstrated that the glandular trichomes and the canals secrete lipophilic substances, which are characterised by the presence of essential oils. The analysis of these essential oils identified monoterpenes as their major constituent and allowed for the recognition of chemical markers for each species. The anatomical and chemical characteristics identified by the present study confirmed that the studied samples belong to three distinct taxa.

scholarly journals Control of Sugarcane Smut Disease: Evaluation of the In vitro Fungitoxicity of Three Essential Oils

2020 ◽  
pp. 34-41
Author(s):  
Yao Kouadio Jacques-Edouard ◽  
Kouamé Konan Didier ◽  
Kouamé Koffi Gaston ◽  
Kassi Koffi Fernand Jean-Martial ◽  
N’guessan Aya Carine ◽  
...  
Keyword(s):  
Essential Oils ◽  
Mycelial Growth ◽  
Zingiber Officinale ◽  
Inhibitory Effects ◽  
Cymbopogon Citratus ◽  
Ocimum Gratissimum ◽  
Sporisorium Scitamineum ◽  
Fungitoxic Effect ◽  
Production Areas

The sugarcane smut disease caused by Sporisorium scitamineum occurs in all production areas. In order to contribute to the management of this disease, a study was carried out in vitro conditions. The aim of this study was to evaluate the antifungal efficacy and to determine the inhibitory concentration of the essentials oils of Ocimum gratissimum, Zingiber officinale and Cymbopogon citratus upon two strains B and Z of Sporisorium scitamineum. These oils were tested on mycelial growth of colonies, spores’ production and teliospores germination. The results showed a variable fungitoxic effect of the oils according to doses. Mycelial growth and spores production were totally inhibited (100%) from 1000 ppm by all the oils. The 90% inhibitory concentrations (IC90) obtained were 880.37 ppm, 847.83 ppm and 805.75 ppm for Ocimum gratissimum, Zingiber officinale and Cymbopogon citratus, respectively. The germination of teliospores was completely reduced by the three essential oils from 500 ppm upwards. Propiconazole had strong inhibitory effects at 400 ppm with a very low IC50 and the IC90 ranged from 305 ppm to 323.36 ppm. Moreover, at the level of the strains, no difference in resistance was observed These oils could provide a good means of controlling sugarcane smut.

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

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