In vitro activation of δ-aminolevulinate dehydratase from far-red irradiated radish (Raphanus sativus L.) seedlings by thioredoxin f

1983 ◽  
Vol 32 (1-2) ◽  
pp. 253-259 ◽  
Author(s):  
A.P. Balance ◽  
C. Lambert
2005 ◽  
Vol 11 (2) ◽  
Author(s):  
É. Domokos-Szabolcsy ◽  
I. J. Holb ◽  
J. Prokisch ◽  
B. Kovács ◽  
Zs. Veres ◽  
...  

Selenium (Se) is an essential trace element for animals, microorganisms and some other Eukaryotes. It has become increasingly evident that Se plays a significant role in reducing the incidence of lung, colorectal and prostate cancer in humans. Although it is well known that some species among higher plants are able to accumulate selenium in their tissues, but others are not able to do so, and there is evidence that selenium is needed for the growth of algae, meanwhile the question of essentiality of Se in vascular plants is unresolved. We aimed to study the in vitro growing and to characterise some physiological properties in radish (Raphanus sativus L.) seedlings treated with 0 to 200 mg/1 sodium-selenate. The results showed that lower (2 mg/1) concentration sodium-selenate increased the biomass as well as the total antioxidant capacity of seedlings. The seedling's selenium content showed linear correlation with the sodium-selenate content of the medium.


2014 ◽  
Vol 28 (1) ◽  
pp. 80-86 ◽  
Author(s):  
Alexander Lukatkin ◽  
Irina Egorova ◽  
Irina Michailova ◽  
Przemysław Malec ◽  
Kazimierz Strzałka

1999 ◽  
Vol 68 (6) ◽  
pp. 1139-1145 ◽  
Author(s):  
Masaru Adachi ◽  
Kenichi Nakabayashi ◽  
Rie Azuma ◽  
Hirofumi Kurata ◽  
Yoshihiro Takahashi ◽  
...  

2015 ◽  
Vol 10 (8) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Daniele Fraternale ◽  
Guido Flamini ◽  
Donata Ricci

The chemical composition of an Italian oil of tarragon ( Artemisia dracunculus L.) was analyzed by GC/EIMS. The major compound of the oil was estragole (73.3%), followed by limonene (5.4%), ( E)-β-ocimene (5.3%), β-pinene (3.4%) and ( Z)-β-ocimene (3.0%). The essential oil was tested “ in vitro” for its antigermination activity against Raphanus sativus L., Lepidium sativum L, Papaver rhoeas L. and Avena fatua L. seeds and demonstrating a good inhibitory activity in a dose-dependent way.


2018 ◽  
Vol 13 (10) ◽  
pp. 1934578X1801301 ◽  
Author(s):  
Lucia Caputo ◽  
Mariarosa Trotta ◽  
Angelica Romaniello ◽  
Vincenzo De Feo

In this study we determined the chemical composition of R. officinalis essential oil and evaluated its possible phytotoxic activity. The chemical composition of the essential oil was studied by GC and GC-MS analyses. A total of 57 compounds were identified and the main components are α-pinene (24.9%), verbenol (8.5%), verbenone (8.5%), 1,8-cineol (8.2%) and isoborneol (8.1%). Moreover, the essential oil and its main constituents, α-pinene and 1,8-cineol, were evaluated for their possible in vitro phytotoxic activity against germination and initial radical growth of radish ( Raphanus sativus L.), rue ( Ruta graveolens L.), lettuce ( Lactuca sativa L.) and tomato ( Solanum lycopersicum L.). The results showed thatboth germination and radical elongation were sensitive to the oil but not in the same way to α-pinene and 1,8-cineol. The oil influences in different ways radical elongation of R. sativus, R. graveolens, and L. sativa and the germination of S. lycopersicum. Instead α-pinene influenced only radical elongation of lettuce.


Author(s):  
Natália Bispo Lima

As peroxidases se destacam no cenário biotecnológico por serem encontradas em diversas fontes na natureza, não dependerem de cofatores e atuarem sobre um amplo número de substratos. Podem ser consideradas enzimas bifuncionais, pois catalisam a oxidação de uma ampla variedade de compostos por meio de peróxido de hidrogênio, mas também produzem espécie reativa de oxigênio (MOHAMED et al.,2011)As peroxidases vegetais tem atraído considerável interesse de pesquisadores, pelo envolvimento dessas enzimas em diversas reações biológicas, como: reações de oxidação, processos de diferenciação celular, crescimento, controle de funções metabólicas e resistências a patógenos (GORTON et al., 1992).O rabanete (Raphanus sativus L.) é uma Brassicaceae, da mesma família da Brassica oleracea (couve, brócolis, repolho e couve-flor), só que diferente destas a parte consumida é uma raiz tuberosa. Planta de porte reduzido, originária da região do mediterrâneo, produz raízes globulares de variadas colorações, sendo a coloração escarlate-brilhante com polpa branca a mais aceita pelos consumidores (FILGUEIRA, 2008).O rabanete cresce na camada subsuperficial, dessa forma, o rendimento do rabanete pode ser influenciado diretamente pelas condições químico-físico-hídricas do solo. Considerando este fato o trabalho tem como objetivo conhecer a influência do íon potássio na atividade da peroxidase e no crescimento do rabanete in vitro, tendo em vista que os nutrientes fornecidos e a influência de diversos sais poderiam agir na atividade peroxidásica, na produção e qualidade do rabanete.


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