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| Tabaldi,Luciane A.; Nicoloso,Fernando T.; Castro,Gabriel Y.; Cargnelutti,Denise; Gonçalves,Jamile F.; Rauber,Renata; Skrebsky,Etiane C.; Schetinger,Maria R.C.; Morsch,Vera M.; Bisognin,Dilson A.. |
| Aluminum toxicity is a serious problem in Brazilian soils and selecting potato clones is an important strategy to produce this crop on these kinds of soils. Potato clones, Macaca, SMIC148-A, Dakota Rose, and Solanum microdontum, were grown in a nutrient solution (pH 4.0) with 0, 50, 100, 150 and 200 mg Al L-1. After 7 d, Al concentration in both root system and shoot of all clones increased linearly with increasing Al levels. Based on relative root growth, S. microdontum and SMIC148-A were considered Al-tolerant clones, whereas Macaca and Dakota Rose were considered Al-sensitive. Shoot growth in Macaca linearly decreased with increasing Al levels. Root H2O2 concentration in both Al-sensitive clones increased with increasing Al supply, whereas in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aluminum toxicity; Antioxidative enzymes; Growth; Oxidative stress; Solanum tuberosum. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000300005 |
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| Skrebsky,Etiane C.; Tabaldi,Luciane A.; Pereira,Luciane B.; Rauber,Renata; Maldaner,Joseila; Cargnelutti,Denise; Gonçalves,Jamile F.; Castro,Gabriel Y.; Shetinger,Maria R.C.; Nicoloso,Fernando T.. |
| Pfaffia glomerata (Spreng.) Pedersen plantlets were grown under different cadmium (Cd) concentrations (0, 20, 40, 60 and 80 μM) in a hydroponic system during 7 d. Plant growth, micronutrient, chlorophyll and carotenoid concentrations, as well as δ-aminolevulinic acid dehydratase (ALA-D; E.C.4.2.1.24) and acid phosphatase (AP; E.C.3.1.3.2) activities were then analysed. Cadmium concentration in both shoots and roots increased with increasing external Cd levels. Metal concentration was on average 12-fold greater in root than in shoot tissues. Root length was unaffected by Cd treatments. In contrast, dry weight of both shoot and roots increased significantly upon addition of 20 and 40 μM Cd. Moreover, shoot and total plant dry weight was only reduced in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian ginseng; Carotenoid; Chlorophyll; Heavy metal; Micronutrient; Phytoremediation. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000400004 |
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| Maldaner,Joseila; Nicoloso,Fernando Teixeira; Tabaldi,Luciane Almeri; Cargnelutti,Denise; Skrebsky,Etiane Caldeira; Rauber,Renata; Gonçalves,Jamile Fabbrin; Rossato,Liana Verônica. |
| Aluminum (Al) toxicity is a limiting factor for crop production in acid soils, which cover approximately 60% of the Brazilian territory. This study aimed to evaluate the effects of Al on growth and tissue Al concentration of two Pfaffia glomerata accessions (BRA and JB/UFSM). Plantlets were grown in a hydroponic system with five Al concentrations (0, 50, 100, 150 and 200mg L-1) for 7 days. Most of the evaluated parameters presented significant interaction between both P. glomerata accessions and Al levels in nutrient solution and, in general, Al treatments negatively affected plant growth, especially roots. Moreover, BRA accession showed higher Al accumulation in its tissues than JB/UFSM and, consequently in BRA accession the growth was impaired... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Ginseng; Acid soils; Al toxicity.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000601013 |
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| Skrebsky,Etiane Caldeira; Nicoloso,Fernando Teixeira; Maldaner,Joseila; Rauber,Renata; Castro,Gabriel Y; Jucoski,Gládis de Oliveira; Santos,Danilo Rheinheimer dos. |
| Este trabalho teve por objetivo caracterizar as exigências nutricionais de mudas de ginseng brasileiro (Pfaffia glomerata (Spreng.) Pedersen) em Argissolo Vermelho distrófico arênico pela técnica do nutriente faltante. Plantas de P. glomerata produzidas in vitro e aclimatizadas ex vitro foram usadas como material inicial para o experimento em casa de vegetação. Aos 10 dias após o transplante para o solo, através de soluções nutritivas, foram realizadas as adubações correspondentes a nove tratamentos: controle (sem adubação), adubação completa (com macro e micronutrientes) e as omissões individuais de N, P, K, Ca, Mg, S e dos micronutrientes (Zn, B, Cu, Fe, Mn e Mo). Aos 60 dias de cultivo, avaliaram-se os parâmetros de crescimento das plantas. O número de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ginseng brasileiro; Nutrição mineral; Omissão de nutrientes; Adubação mineral; Amaranthaceae. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400013 |
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| Tabaldi,Luciane Almeri; Castro,Gabriel Y; Cargnelutti,Denise; Skrebsky,Etiane Caldeira; Gonçalves,Jamile Fabbrin; Rauber,Renata; Rossato,Liana; Schetinger,Maria Rosa Chitolina; Bisognin,Dílson Antônio; Nicoloso,Fernando Teixeira. |
| The objective of this study was to evaluate the effects of aluminum (Al) on the zinc (Zn), manganese (Mn), iron (Fe) and copper (Cu) concentrations in four potato clones (Macaca and Dakota Rose: both Al-sensitive clones; and SMIC148-A and Solanum microdontum: both Al-tolerant-clones), grown in a nutrient solution (pH 4.00) with 0, 50, 100, 150 and 200mg Al L-1. Root Zn and Fe concentrations decreased linearly with the increase of Al levels in Macaca, SMIC148-A and Dakota Rose and increased linearly in S. microdontum. Shoot Zn concentration showed a quadratic relationship with Al in S. microdontum and SMIC148-A, but a curvilinear response in Dakota Rose. Shoot Fe concentration showed a quadratic relationship with Al in S. microdontum, SMIC148-A and Dakota... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Solanum microdontum; Zinc; Manganese; Iron; Copper. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000200010 |
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