Proteomic, enzymatic and metalloproteomic aspects of transgenic and non-transgenic soybean seec / Aspectos proteomicos, enzimaticos e metaloproteomicos em sementes de soja transgenica e não-transgenica

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

In this work, transgenic and non-transgenic soybean seeds were studied, being the Roundup Ready® (RR) type, the soybean genectically modified, to which the insertion of the gene make the plant resistent to herbicides that present the glifosate as active principle. The proteomic, enzimatic and metal profiles were evaluated in the soybean seeds to contribute to a new area, Metallomics. The results indicated that no variation was obtained related to the amount of total proteins between both samples as well as no variation related to the number of those detected spots in the gels in the pI range evaluated (3-10 and 4-7) after 2D PAGE. However, from the gel image analysis, 10 spots presented significant variation related to the protein expression between the seeds ( 90%). From this set, 08 proteins were analyzed by MALDI-QTOF-MS and the peptide sequency of each one identified in the protein data bank. Aparently, no variation when considering CAT, GR, SOD and APX in terms of enzimatic activity for transgenic and non-transgenic soybean seeds was achieved, when spectrophotometry and gel electrophoresis were used. Apparently, there is not the detection of the oxidative stress at this stage. The metallic species mapping was carried out by SR-XRF and ICP MS, and some elements were detected (Co, Nb, Cd, Se, V, La, Ce, Th, Ru, Zr and Hg). Vanadium was quantificated in 02 spots of transgenic soybean seeds only; however, due to the high gel to gel variation and those ones commonly achieved in biological systems, conclusive aspects about their quantifications were not still possible. There is no information in the literature about a possible presence of V in those identified proteins.

ASSUNTO(S)

soybean metaloproteomica metalloproteomic estresse oxidativo soja proteomic oxidative stress proteomica

ACESSO AO ARTIGO

Documentos Relacionados