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Effect of sulfur on nitrate reductase and ATP sulfurylase Activities in groundnut (Arachis hypogea L.)

한국식물학회지 2006년 49권 6호 p.513 ~ 517
 ( Jamal Arshad ) - Jamia Hamdard Department of Biotechnology

 ( Fazli Inayat Saleem ) - Jamia Hamdard Department of Biotechnology
 ( Ahmad Saif ) - Jamia Hamdard Department of Biotechnology
 ( Kim Ki-Taek ) - RDA National Horticulture Research Institute Horticultural Biotechnology Division
 ( Oh Dae-Geun ) - RDA National Horticulture Research Institute Horticultural Biotechnology Division
 ( Abdin Malik Zainul ) - Jamia Hamdard Department of Biotechnology

Abstract


Field experiments were conducted to determine the effect of sulfur (S) and Nitrogen (N) on nitrate reductase (NR) and ATP-sulfurylase activities in groundnut cultivars (Arachis hypogea L. cv. Ambar and Kaushal). Two combinations of S (in kg ha-1): OS (-S) and 20S (+S) were used with 20 kg ha-1 N. The application of S enhanced the NR and ATP-sulfurylase activities in both the cultivars at all the growth stages. The application of S also increased soluble protein and chlorophyll content in the all growth stages of both the cultivars. NR and ATP-sulfurylase activities in the leaves were measured at various growth stages as the two enzymes catalyze the rate limiting steps of the assimilatory pathways of nitrate and sulfate, respectively.

키워드

ATP-sulfurylase; chlorophyll; leaf soluble protein; nitrate reductase; sulfur
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