Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris

Chanda, Sumitra V.; PARMAR, Nayna G.

Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris

Nayna G. PARMAR, (Department, of Biosciences, Saurashtra Univercity Rajkot 360 005, India)

Sumitra V. Chanda (Department, of Biosciences, Saurashtra Univercity Rajkot 360 005, India)

Turkish Journal of Biology

1 0

Yıl: 2005 Cilt: 29 Sayı: 1 Sayfa Aralığı: 15 - 21 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris

Öz:

Phaseolus seedlings (Phaseolus vulgaris L.) in light conditions were treated with 2 different concentrations of 2 heavy metals, mercury (0.05 mM and 0.4 mM) and chromium (0.5 and 1.0 mM). Mercury was given in the form of $HgCl_2$ and chromium was given in the form of $K_2Cr_20_7$. Peroxidase activity was measured with 4 different hydrogen donors (ferulic acid, caffeic acid, pyrocatechol and pyrogallol). Both mercury and chromium inhibited root and hypocotyl length. The inhibition was about 50%-80%, depending on the concentration of the heavy metal. Peroxidase and IAA oxidase activities showed a clear inverse relation with growth. Seedlings treated with a lower concentration of mercury had similar activities to those treated with higher concentrations of chromium. The role of peroxidase and IAA oxidase activities in defense mechanisms in response to heavy metal toxicity is discussed.

Anahtar Kelime: chromium enzyme activity Phaseolus vulgaris toxicity mercury seedling growth peroxidase heavy metals IAA oxidase defence mechanisms

Konular: Biyoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	PARMAR N, Chanda S (2005). Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. , 15 - 21.
Chicago	PARMAR Nayna G.,Chanda Sumitra V. Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. (2005): 15 - 21.
MLA	PARMAR Nayna G.,Chanda Sumitra V. Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. , 2005, ss.15 - 21.
AMA	PARMAR N,Chanda S Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. . 2005; 15 - 21.
Vancouver	PARMAR N,Chanda S Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. . 2005; 15 - 21.
IEEE	PARMAR N,Chanda S "Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris." , ss.15 - 21, 2005.
ISNAD	PARMAR, Nayna G. - Chanda, Sumitra V.. "Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris". (2005), 15-21.

APA	PARMAR N, Chanda S (2005). Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. Turkish Journal of Biology, 29(1), 15 - 21.
Chicago	PARMAR Nayna G.,Chanda Sumitra V. Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. Turkish Journal of Biology 29, no.1 (2005): 15 - 21.
MLA	PARMAR Nayna G.,Chanda Sumitra V. Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. Turkish Journal of Biology, vol.29, no.1, 2005, ss.15 - 21.
AMA	PARMAR N,Chanda S Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. Turkish Journal of Biology. 2005; 29(1): 15 - 21.
Vancouver	PARMAR N,Chanda S Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris. Turkish Journal of Biology. 2005; 29(1): 15 - 21.
IEEE	PARMAR N,Chanda S "Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris." Turkish Journal of Biology, 29, ss.15 - 21, 2005.
ISNAD	PARMAR, Nayna G. - Chanda, Sumitra V.. "Effects of mercury and chromium on peroxidase and IAA oxidase enzymes in the seedlings of Phaseolus vulgaris". Turkish Journal of Biology 29/1 (2005), 15-21.