Effects of trace elements and pesticides on dephosphorylation of RNA and DNA added to soils

Conference · Wed Jan 01 00:00:00 EST 1986 · J. Environ. Qual.; (United States)

OSTI ID:6070735

Frankenberger, Jr, W T; Johanson, J B; Lund, L J

This study was carried out to assess the effects of 14 trace elements, 12 herbicides, and two fungicides on dephosphorylation of yeast ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) added to soils (Xerollic Calciorthids and Typic Haploxeralfs). The cumulative amount of ortho phosphate (Pi) released from nucleic acids increased linearly with time of incubation (up to 72 h), decreased with profile depth, and was highly influenced by soil pH. When trace elements were applied and compared by using 2.5 mmol kg/sup -1/ of soil, the average inhibition in dephosphorylation of RNA and DNA in two soils ranged from 17% with Co(II) to 52% with Cu(II). The most effective inhibitors of nucleic acid dephosphorylation were Ag(I), Cu(I), Cd(II), Cu(II), Mn(II), Ni(II), and Pb(II) (avg inhibition greater than or equal to 35%). Other elements that inhibited dephosphorylation of RNA and DNA added to soils included Ba(II), Co(II), Hg(II), Zn(II), Ti(IV), V(IV), and W(VI). When the pesticides were compared by using 5 mg of active ingredient kg/sup -1/ of soil, the average inhibition in nucleic acid dephosphorylation ranged from 14% with butylate to 39% with chloramben. The most effective inhibitors (> 25%) were atrazine, naptalam, chloramben, dicamba, trifluralin, and maneb. Other pesticides that inhibited RNA and DNA dephosphorylation in soils included cyanazine, 2,4-D, dinitroamine, EPTC plus R-25788, alachlor, paraquat, butylate, and captan.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 6070735
• Journal Information: J. Environ. Qual.; (United States), Vol. 15:1; Conference: Presented before Division S-3, soil science Society of America meeting, Washington, DC, USA, 18 Aug 1983
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BARIUM
BIOLOGICAL EFFECTS
ENVIRONMENTAL EFFECTS
CADMIUM
COBALT
COPPER
FUNGICIDES
HERBICIDES
LEAD
MANGANESE
MERCURY
NICKEL
SILVER
TITANIUM
VANADIUM
WOLFRAMITE
ZINC
DECOMPOSITION
DNA
INHIBITION
PH VALUE
RESPONSE MODIFYING FACTORS
RNA
ALKALINE EARTH METALS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
IRON COMPOUNDS
IRON OXIDES
METALS
MINERALS
NUCLEIC ACIDS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PESTICIDES
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
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