CICY GOBIERNO DE MÉXICO · SECIHTI

BIBLIOTECA

CICY.mx › Biblioteca › Catálogo en línea

Cloning and expression analysis of a nitrate reductase gene related to somatic embryogenesis in Gossypium hirsutum

Material type: TextSeries: ; Scientific Research and Essays, 7(3), p.300-309, 2012Contained works:
  • Liu, J
  • Han, G
  • Zhang, Y
  • Wang, X
  • Chi, J
  • Zhang, G
  • Ma, Z
Subject(s): Online resources: Abstract: Nitrate reductase is a key enzyme in the overall process of nitrate assimilation by plants. A nitrate reductase (NR)gene related to somatic embryogenesis was firstly cloned from Gossypium hirsutum. Sequence alignment shows that the GhNR is closest with Tilia platyphyllos NR gene. The expression of GhNR was investigated using semi-quantitative RT-PCR in nonembryogenic calli, embryogenic calli and somatic embryoids which showed that the expression level of GhNR was higher in embryogenic calli and somatic embryoids than in nonembryogenic calli. Besides, the expression of GhNR gene was verified by transformation in E. coli BL21 (DE3)strain with the recombinant expression vector pET-32a. NR activity assay showed that the crude GhNR protein had obvious activity to KNO3 substrate. The results implied that NR has a critical function in the assimilation of nitrogen in cotton somatic embryo germination.
Tags from this library: No tags from this library for this title. Log in to add tags.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Cover image Item type Current library Home library Collection Shelving location Call number Materials specified Vol info URL Copy number Status Notes Date due Barcode Item holds Item hold queue priority Course reserves
REF1 CICY F1 B-20884 (Browse shelf(Opens below)) Available

Nitrate reductase is a key enzyme in the overall process of nitrate assimilation by plants. A nitrate reductase (NR)gene related to somatic embryogenesis was firstly cloned from Gossypium hirsutum. Sequence alignment shows that the GhNR is closest with Tilia platyphyllos NR gene. The expression of GhNR was investigated using semi-quantitative RT-PCR in nonembryogenic calli, embryogenic calli and somatic embryoids which showed that the expression level of GhNR was higher in embryogenic calli and somatic embryoids than in nonembryogenic calli. Besides, the expression of GhNR gene was verified by transformation in E. coli BL21 (DE3)strain with the recombinant expression vector pET-32a. NR activity assay showed that the crude GhNR protein had obvious activity to KNO3 substrate. The results implied that NR has a critical function in the assimilation of nitrogen in cotton somatic embryo germination.

There are no comments on this title.

to post a comment.