[Functional analysis of a chitinase gene PnCHI1 from Panax notoginseng].

Chitinases, a glycosidase enzyme that hydrolyzes chitin to N-acetylglucosamine, are widely found in plant cells, and they are an important part of plant antifungal defense system. The function of a Panax notoginseng chitinase gene PnCHI1 was characterized in this paper. Expression vector of PnCHI1 was constructed and transiently expressed in onion epidermal cells, and laser scanning confocal microscopy demonstrated that PnCHI1 was localized in the cell wall.

[Cloning and expression analysis of a chitinase gene PnCHI1 from Panax notoginseng].

Chitinases(EC3.2.1.

[Application of ICP-AES to the chemical speciation of heavy metals in flyash].

Chemical speciation of seven heavy metals of flyashes in incinerator was quantitatively tested using ICP-AES. Results showed that ICP-AES procedure could carry out quick, exact and high precision experiments. RSD ratio for most detected metals was lower than 3% while few metals present a comparatively high RSD when whose content was near the detection limits.