**USDA-ARS Air Quality Research Unit Publication List**

**1995 --2004**

**[1995]{.underline}**

1.  Booker, F.L. and E.L. Fiscus. 1995. Measurement and modeling of
    ultraviolet-B irradiance. IN: Climate Change and Rice (S. Peng, K.T.
    Ingram, H.U. Neue and L.H. Ziska, eds.). Springer-Verlag, Berlin
    Heidelberg, pp 147-157.

2.  Booker, F.L., S. Brunschn-Harti, C.D. Reid, E.L. Fiscus and J.E.
    Miller. 1995. Photorespiration in soybean treated with elevated
    carbon dioxide and ozone in open-top chambers. Plant Physiology 108
    (S): 63.

3.  Booker, F.L., S. Anttonen and A.S. Heagle. 1995. Catechin,
    proanthocyanidin and lignin contents of loblolly pine (*Pinus taeda*
    L.) needles after chronic exposure to ozone. 27th Annual Air
    Pollution Workshop, Cuernavaca, Mexico. 6 - 9 March.

4.  Fiscus, E.L. and F.L. Booker. 1995. Is increased UV-B a threat to
    crop photosynthesis and productivity? Photosynthesis Research 43:
    81-92.

5.  Fiscus, E.L., F.L. Booker, J.E. Miller and C.D. Reid. 1995. Response
    of soybean leaf water relations to tropospheric ozone. Canadian
    Journal of Botany 73: 517-526.

6.  Fisher, D.S., J.C. Burns and A.S. Heagle. 1995. The effects of ozone
    stress on white clover anatomy and nutritive value.
    Proc-South-Pasture-Forage-Crop-Improv-Conf. New 0rleans :
    Agricultural Research Service (Southern Region), U.S. Dept. of
    Agriculture, pp. 25-30.

7.  Heagle, A.S., J.E. Miller, B.I. Chevone, T.W. Dreschel, W.J.
    Manning, P.M. McCool, C.L. Morrison, G.E. Neely and J.
    Rebbeck. 1995. Response of a white clover indicator system to
    tropospheric ozone at eight locations in the United States.
    Water-Air-Soil-Pollution 85:1373-1378.

8.  Miller, J.E., S.F. Vozzo, R.P. Patterson, W.A. Pursley and A.S.
    Heagle. 1995. Effects of ozone and water deficit on field-grown
    soybean. II. Leaflet nonstructural carbohydrates. Journal of
    Environmental Quality 24:670-677.

9.  Reid, C.D., E.L. Fiscus and F.L. Booker. 1995. Is photorespiration
    affected by long-term ozone fumigation and carbon
    dioxide-enrichment? Bulletin of the Ecological Society of America 76
    (S): 223.

10. Vozzo, S.F., J.E. Miller, W.A. Pursley and A.S. Heagle. 1995.
    Effects of ozone and water deficit on field-grown soybean. I. Leaf
    gas exchange. Journal of Environmental Quality 24:663-670.

**[1996]{.underline}**

1.  Anttonen, S.K. 1996. Impacts of ozone and other air pollutants on
    pine needle lipids: microscopical and chemical studies (*Pinus
    sylvestris, Pinus halepensis, Pinus taeda*). Ph.D. dissertation,
    Kupio University, Finland. 65 pp.

2.  Anttonen, S., M.-L. Sutinen, and A. S. Heagle. 1996. Ultrastructure
    and some plasma membrane characteristics of ozone-exposed loblolly
    pine needles. Physiologia Plantarum 98:309-319.

3.  Booker, F.L., S. Anttonen and A.S. Heagle. 1996. Catechin,
    proanthocyanidin and lignin contents of loblolly pine (*Pinus taeda*
    L.) needles after chronic exposure to ozone. New Phytologist 132:
    483-492.

4.  Booker, F.L., L.H. Pitcher, A.S. Heagle, J.E. Miller and B.A.
    Zilinskas. 1996. Effects of chronic ozone exposure on transgenic
    tobacco overexpressing cytosolic Cu/Zn superoxide dismutase. 28th
    Annual Air Pollution Workshop, Raleigh, NC. 13-17 April.

5.  Brunschon-Harti, S., F.L. Booker, A. Fangmeier, H-J. Jager, and J.E.
    Miller. 1996. Influence of elevated CO~2~ and ozone on enzymes
    related to photorespiration in soybean. Verhandlungen der
    Gesellschaft fur Okologie 26:625-628.

6.  Eason, G., R.A. Reinert, and J. E. Simon. 1996. SO~2~-enhanced
    phytotoxicity of O~3~ to watermelon. Journal of the American Society
    for Horticultural Science 12: 718-721.

7.  Fiscus, E.L., F.L. Booker and J.E. Miller. 1996. Response of soybean
    bulk leaf water relations to ultraviolet-B irradiation. Journal of
    Plant Physiology 148: 63-68.

8.  Heagle, A.S. and J.E. Miller. 1996. Effects of rooting medium and
    fertilizer rate on response of white clover to tropospheric ozone.
    Environmental Pollution 91: 113-119.

9.  Heagle, A., J.E. Miller, B. Chevone, T. Dreschel, W. Manning, P.
    McCool, C. Morrison, G. Neely, and J. Rebbeck. 1996. Response of a
    white clover indicator system to tropospheric ozone at eight
    locations in the United States. Water, Air, and Soil Pollution 85:
    1373-1378.

10. Heagle, A.S., R. Reinert, and I. Miller. 1996. White clover response
    to ozone in different environments. Journal of Environmental Quality
    25:273-278.

11. Johnson, J.D., A.H. Chappelka, F.P. Hain and A.S. Heagle. 1996.
    Interactive effects of air pollutants with abiotic and biotic
    factors on southern pine forests. IN: Impact of Air Pollutants on
    Southern Pine Forests, vol. 118, New York, Springer-Verlag, pp.
    280-312.

12. Reinert, R.A., S.R. Shafer, G. Eason, M.M. Schoeneberger, and S.I.
    Horton. 1996. Responses of loblolly pine to ozone and simulated
    acidic rain. Canadian Journal of Forest Research 26: 1715- 1723.

13. Shafer, S.R., M.M. Schoeneberger, S.I. Borton, C.B. Davey and I.E.
    Miller. 1996. Effects of rhizobium, arbuscular mycorrhizal fungi,
    and anion content of simulated rain on subterranean clover.
    Environmental Pollution 92 (1):55-66.

**[1997]{.underline}**

1.  Booker, F.L., C.D. Reid, S. Brunschon-Harti, E.L. Fiscus and J.E.
    Miller. 1997. Photosynthesis and photorespiration in soybean
    \[*Glycine max* (L.) Merr.\] chronically exposed to elevated carbon
    dioxide and ozone. Journal of Experimental Botany 48: 1843-1852.

2.  Booker, F.L. 1997. Effects of elevated CO~2~ and nitrogen on
    proanthocyanidins in cotton. Plant Physiology 114 (S): 111.
    Vancouver, BC, 2-6 August.

3.  Burns, J.C., A.S. Heagle and D.S. Fisher. 1997. Nutritive value of
    ozone sensitive and resistant Ladino white clover clones after
    chronic ozone and carbon dioxide exposure. ASA special publication
    no. 61. IN: Advances in Carbon Dioxide Effects Research. eds. L.H.
    Allen, Jr., M.B. Kirkham, D.M. Olszk, and C.E. Whitman. Nov. 7-12,
    1993, Cincinnati, OH. Pp. 153-167.

4.  Fiscus, E.L., C.D. Reid, J.E. Miller and A.S. Heagle. 1997. Elevated
    CO~2~ reduces O~3~ flux and O~3~-induced yield losses in soybeans:
    possible implications for elevated CO~2~ studies. Journal of
    Experimental Botany 48:307-313.

5.  Fisher, D.S., A.S. Heagle and J.C. Burns. 1997. Anatomy of clover
    exposed to enriched ozone and carbon dioxide. ASA special
    publication no. 61. IN: Advances in Carbon Dioxide Effects Research.
    eds. L.H. Allen, Jr., M.B. Kirkham, D.M. Olszk, and C.E. Whitman.
    Nov. 7-12, 1993, Cincinnati, OH. Pp. 169-177.

6.  MacKay, J.J., D.M. O'Malley, T. Presnell, F.L. Booker, M.M.
    Campbell, R.W. Whetten and R.R. Sederoff. 1997. Inheritance, gene
    expression, and lignin characterization in a mutant pine deficient
    in cinnamyl alcohol dehydrogenase. Proceedings of the National
    Academy of Sciences, USA 94: 8255-8260.

7.  Miller, I.E., S.R. Shafer, M.M. Schoeneberger, W.A. Pursley, S.I.
    Horton, and C. Davey. 1997. Infuence of a mycorrhizal fungus and/or
    rhizobium on growth and biomass partitioning of subterranean clover
    exposed to ozone. Water, Air, and Soil Pollution 96:233-248.

8.  Reinert, R.A., G. Eason and J. Barton. 1997. Growth and fruiting of
    tomato as influenced by elevated carbon dioxide and ozone. New
    Phytologist 137:411-420.

**[1998]{.underline}**

1.  Booker, F.L. and J.E. Miller. 1998. Phenylpropanoid metabolism and
    phenolic composition of soybean \[*Glycine max* (L.) Merr.\] leaves
    following exposure to ozone. Journal of Experimental Botany
    49:1191-1202.

2.  Booker, F.L., E.L. Fiscus, and J.E. Miller. 1998. Effects of
    elevated CO~2~ on O~3~ uptake and injury in soybean. Plant
    Physiology 1998 Suppl. p. 113 (abstract).

3.  Bradow, J.M., A.S. Heagle, and W.A. Pursley. 1998. Interactive
    effects of ozone, carbon dioxide, and soil nitrogen on cotton fiber
    properties. ASA/CSSA/SSSA Annual Meeting. Oct 18-22. p. 107.
    (abstract)

4.  Bradow, J.M., A.S. Heagle and W.A. Pursley. 1998. Interactive
    effects of ozone, carbon dioxide, and soil nitrogen on cotton fiber
    properties. Proceedings of the Beltwide Cotton Conference, Memphis,
    TN, v. 2:1365-1366.

5.  Burkey, Kent O. and James N. Mathis. 1998. Identification of a novel
    isoform of the chloroplast-coupling factor alpha-subunit. Plant
    Physiology 116:703-708.

6.  Chevone, B., A.S. Heagle, W. Manning, A. Varbanov, and S.
    Krupa. 1998. Relating ambient ozone concentrations to adverse
    biomass responses of white clover: A case study. Paper No.
    98-RP106.04. *In*: Abstracts, 91st Annual Meeting & Exhibition of
    the Air & Waste Management Association, June 14-18, 1998 San Diego,
    CA. p. 322. (abstract)

7.  Heagle, A.S., J.E. Miller, and F.L. Booker. 1998. Influence of ozone
    stress on soybean response to carbon dioxide enrichment. I. Foliar
    properties. Crop Science 38:113-121.

8.  Heagle, A.S., J.E. Miller, and W.A. Pursley. 1998. Influence of
    ozone stress on soybean response to carbon dioxide enrichment. III.
    Yield and seed quality. Crop Science 38:128-134.

9.  Hellkamp, A.S., S.R. Shafer, C.L. Campbell, J.M. Bay, D.A. Fiscus,
    G.R. Hess, B.F. McQuaid, M.J. Muster, G.L. Olson, S.L. Peck, K.N.
    Easterling, K. Sidik and M.B. Tooley. 1998. Assessment of the
    condition of agricultural lands in five mid-Atlantic states.
    Environmental Monitoring & Assessment 51:317-324.

10. Holmes, G.J., M.A. Cubeta, and A.S. Heagle. 1998. Susceptibility of
    commercial potato cultivars to ozone Injury, 1997. Biological and
    Cultural Tests 13:105.

11. Hummel, Robert L., Rick L. Brandenburg, Allen S. Heagle, and
    Consuelo Arellano. 1998. Effects of ozone on reproduction of two
    spotted spider mites (*Acari: Tetranychidae*) on white clover.
    Journal of Environmental Entomology 27(2):338-394.

12. Miller, J.E., A.S. Heagle, and W.A. Pursley. 1998. Combined effects
    of elevated carbon dioxide and ozone on Wheat. 1998 Annual Meeting
    Abstract. American Society of Agronomy Oct 18-22. p. 106. (abstract)

13. Miller, J.E., A.S. Heagle, and W.A. Pursley. 1998. Influence of
    ozone stress on soybean response to carbon dioxide enrichment. II.
    Biomass and development. Crop Science 38:122-128.

14. Reid, C.D., E.L. Fiscus, and K.O. Burkey. 1998. Combined effects of
    chronic ozone and elevated CO~2~ on Rubisco activity and leaf
    components in soybean (*Glycine max*). Journal of Experimental
    Botany 49:1999-2011.

15. Reid, C.D. and E.L. Fiscus. 1998. Effects of elevated \[CO~2~\]
    and/or ozone on limitations to CO~2~ assimilation in soybean
    *(Glycine max).* Journal of Experimental Botany 49: 885-896.

16. Reid, C.D. and E.L. Fiscus. 1998. Effect of elevated CO~2~ and O~3~
    on seed yield. Ecological Society of America Bulletin 79:208.

17. Shafer, S.R., U. Blum, S.J. Horton, and D.L. Hesterberg. 1998.
    Biomass of tomato seedlings exposed to an allelopathic phenolic acid
    and enriched atmospheric carbon dioxide. Water, Air, and Soil
    Pollution 106:123-136.

**[1999]{.underline}**

1.  Burkey, K.O. 1999. Effects of ozone on the apoplast/cytoplasm
    partitioning of ascorbic acid in snap bean. Physiologia Plantarum
    107:188-193.

2.  Burkey, K.O. 1999. Effect of ozone on leaf apoplast ascorbic acid
    content. ASPP Plant Biology 1999 Meeting Abstracts, pg. 112.

3.  Burkey, Kent O. 1999. Apoplast ascorbic acid in ozone-sensitive and
    tolerant snap beans, 31^st^ Air Pollution Workshop, Corvallis,
    Oregon

4.  Fiscus, E.L., F.L. Booker, A.B. Britt, and R.B. Philbeck. 1999.
    Growth of *Arabidopsis* flavonoid mutants under solar radiation and
    UV filters. Environmental and Experimental Botany 41:231-245.

5.  Gimeno, B.S., V. Bermejo, R.A. Reinert, Y. Zheng and J.D.
    Barnes. 1999. Adverse effects of ambient ozone on watermelon yield
    and physiology at a rural site in Eastern Spain. New Phytologist
    144: 245-260.

6.  Heagle, A.S., F.L. Booker, J.E. Miller, E.L. Fiscus, W.A. Pursley,
    and L.A. Stefanski. 1999. Influence of daily carbon dioxide exposure
    duration and root environment on soybean response to elevated carbon
    dioxide. Journal of Environmental Quality 28:666-675.

7.  Heagle, A.S., J.E. Miller, F.L. Booker and W.A. Pursley. 1999. Ozone
    stress, carbon dioxide enrichment and nitrogen fertility
    interactions in cotton. Crop Science 39:731-741.

8.  Hudak, C., J. Bender, H. J. Weigel, and J. E. Miller. 1999.
    Interactive effects of elevated CO~2~, O~3~, and soil water deficit
    on spring wheat (*Triticum aestivum* L. cv. Nandu)*.* Agronomie
    19:677-687.

9.  Jackson, D.M., A.S. Heagle, and R.V.W. Eckel. 1999. Ovipositional
    response of tobacco hornworm moths (*Lepidoptera: Sphingidae*) to
    tobacco plants grown under elevated levels of ozone. Environmental
    Entomology 28 (4):566-571.

10. Reid, C.D., E.L. Fiscus, and K.O. Burkey. 1999. Effect of chronic
    ozone and elevated atmospheric CO~2~ concentrations on ribulose-1,
    5-bisphosphate in soybean (*Glycine max*). Physiologia Plantarum
    106:378-385.

11. Warren, J.M., H.L. Allen, F.L. Booker. 1999. Mineral nutrition,
    resin flow and phloem phytochemistry in loblolly pine. Tree
    Physiology 19:655-663.

**[2000]{.underline}**

1.  Booker, F.L. 2000. Influence of carbon dioxide enrichment, ozone and
    nitrogen fertilization on cotton (*Gossypium hirsutum* L*.*) leaf
    and root composition. Plant, Cell and Environment 23:573-583.

2.  Booker, F.L., S.R. Shafer, W. Caimiao and S. Horton. 2000. Carbon
    dioxide enrichment, and nitrogen fertilization effects on cotton
    (*Gossypium hirsutum* L.) plant residue chemistry and decomposition.
    Plant and Soil 220:89-98.

3.  Burkey, K.O., C. Wei, G. Eason, P. Ghosh and G.P. Fenner. 2000.
    Antioxidant metabolites levels in ozone-sensitive and tolerant
    genotypes of snap beans. Physiologia Plantarum 110:195-200.

4.  Burkey, Kent O. 2000. Extracellular ascorbic acid content in
    ozone-sensitive and tolerant snap bean genotypes, 32^nd^ Air
    Pollution Workshop, Auburn, Alabama.

5.  Heagle, A.S., J.E. Miller and W.A. Pursley. 2000. Growth and yield
    responses of winter wheat to mixtures of ozone and carbon dioxide.
    Crop Science 40:1656-1664.

6.  Heagle, A.S. and L.A. Stefanski. 2000. Relationship between ambient
    ozone regimes and white clover forage production using different
    ozone exposure indexes. Environmental Pollution. 34:735-744.

7.  Jackson, D.M., T.W. Rufty, A.S. Heagle, R.F. Severson, and R.V.W.
    Eckel. 2000. Survival and development of tobacco hornworm larvae on
    tobacco plants grown under elevated levels of ozone. Journal of
    Chemical Ecology 26:1-19.

8.  Mills, G., G. Ball, F. Hayes, L. Skarby, B. Gimeno, L. de Temmerman
    and A.S. Heagle. 2000. Development of a multi-factor model for
    predicting the critical level of ozone for white clover. Environment
    Pollution 109:533-542.

9.  Reinert, R.A. and G. Eason. 2000. Genetic control of O~3~
    sensitivity in a cross between two cultivars of snapbean. Journal of
    the American Society for Horticultural Science 125: 222-227.

**[2001]{.underline}**

1.  Booker, F.L. and K. Burkey. 2001. Extracellular RNase in snap bean
    leaves is stimulated by ozone. Plant Biology 2001 meeting abstract
    #458, p.105.

2.  Booker, F. L. and C. Maier. 2001. Atmospheric carbon dioxide,
    irrigation, and fertilization effects on phenolic and nitrogen
    concentrations in loblolly pine (*Pinus taeda* L.) needles. Tree
    Physiology 21:609-616.

3.  Booker, F.L. and K.O. Burkey. 2001. Stimulation of RNase activity by
    ozone stress. European Science Foundation Workshop, Adaptation of
    plant populations to environmental insult, Newcastle, UK. July
    27-30.

4.  Burkey, K.O. 2001. Leaf extracellular ascorbic acid as a factor in
    ozone tolerance. Plant Biology 2001 meeting abstract #456, p. 105.

5.  Burkey, Kent O. 2001. Leaf extracellular ascorbic acid as a factor
    in ozone tolerance, 33^rd^ Air Pollution Workshop, Riverside,
    California.

6.  Costa, S.D., G.G. Kennedy and A.S Heagle. 2001. Effect of host plant
    ozone stress on Colorado potato beetles. Environmental Entomology
    30: 824-831.

7.  Fiscus, E.L., F.L. Booker, C.D. Reid, and J.E. Miller. 2001.
    Unconsidered environmental stresses may cause overestimates of the
    CO~2~-fertilization effect. Paper S33 in PS2001: Proceedings 12th
    International Congress on Photosynthesis.

8.  Krupa, S.V., G.T. McGrath, C. P. Andersen, F.L. Booker, K.O.
    Burkey, A. Chappelka, B. Chevone, E. Pell, and B. Zilinskas. 2001.
    Ambient ozone and plant health. Plant Disease Vol. 85(1): 4-12.

**[2002]{.underline}**

1.  Booker, F.L., E.L. Fiscus and J.E. Miller. 2002. Combined effects of
    elevated atmospheric CO~2~ and ozone on soybean whole-plant water
    use. USDA Symposium on Natural Resource Management to Offset
    Greenhouse Gas Emissions, Nov. 19-21, Raleigh, NC.

2.  Burkey, K.O., and G. Eason. 2002. Ozone tolerance in snap bean is
    associated with elevated ascorbic acid in the leaf apoplast.
    Physiologia Plantarum 114: 387-394.

3.  Burkey, Kent O., Howard Neufeld, Lara Souza, Art Chappelka, Alan
    Davison. 2002. Seasonal profiles of leaf ascorbic acid in
    ozone-sensitive wildflowers, 34^th^ Air Pollution Workshop, State
    College, Pennsylvania

4.  Fiscus, E. L. and F.L. Booker. 2002. Growth of *Arabidopsis*
    flavonoid mutant is challenged by radiation longer than the UV-B
    band. Environmental and Experimental Botany 48:213-224.

5.  Fiscus, E.L., J.E. Miller, F.L. Booker, A.S. Heagle and C.D.
    Reid. 2002. The impact of ozone and other limitations on the crop
    productivity response to CO~2~. Technology 8: 181-192.

6.  Heagle, A.S., J.C. Burns, D.E. Fisher, and J.E. Miller. 2002.
    Effects of carbon dioxide enrichment on reproduction of twospotted
    spider mites on white clover. Environmental Entomology. 31
    (4):594-601.

7.  Heagle, A.S., J.E. Miller, K.O. Burkey, G.P. Eason, and W.A.
    Pursley. 2002. Growth and yield responses of *Phaseolus vulgaris* to
    mixtures of carbon dioxide and ozone. Journal of Environmental
    Quality 31:2008-2014.

8.  Niyogi, D., K. Alapaty, R. Boyles, F.L. Booker and E.L.
    Fiscus. 2002. Assessing environmental feedback on carbon
    assimilation over southeastern US. USDA Symposium on Natural
    Resource Management to Offset Greenhouse Gas Emissions, Nov. 19-21,
    Raleigh, NC.

**[2003]{.underline}**

1.  Booker, F.L. and E.L. Fiscus. 2003. Effects of elevated carbon
    dioxide and ozone on soybean \[*Glycine max* (L.) Merr.\]
    transpiration. ASA/CSSA/SSSA Annual Meeting, Nov. 2-6, Denver, CO.

2.  Britt, A., and E.L. Fiscus. 2003. Growth and yield responses of
    *Arabidopsis* DNA repair mutants to solar radiation. Physiologia
    Plantarum 118:183-192.

3.  Burkey, K.O., G. Eason, and E.L. Fiscus. 2003. Factors that affect
    extracellular ascorbic acid content and redox status. Physiologia
    Plantarum 117:51-57.

4.  Fiscus, E.L., F.L. Booker and A. Britt. 2003. Responses of DNA
    repair and flavonoid deficient Arabidopsis mutants to solar UV -B
    radiation. 31^st^ Annual Meeting of the American Society for
    Photobiology, July 5-9, Baltimore, MD.

5.  Fiscus, E.L., F.L. Booker and M. Flowers. 2003. Turgor maintenance
    in elevated CO~2~. ASPB Annual Meeting, July 25-30, Honolulu, HI.

6.  Fuhrer, J., and F.L. Booker. 2003. Ecological issues related to
    ozone: agricultural issues. Environment International. 29:141-154.

7.  Heagle, A.S., 2003. Influence of elevated carbon dioxide on
    interactions between *Frankliniella occidentalis* and *Trifolium
    repens*. Environmental Entomology 32: 421-424.

8.  Heagle, A.S., J.E. Miller, W.A. Pursley. 2003. Growth and yield
    responses of potato to mixtures of carbon dioxide and ozone. Journal
    of Environmental Quality 32:1603-1610.

9.  Niyogi, D., F.L. Booker, C. Dehui, C. F. Chen, H.-I. Chang, T.
    Holt, V. Saxena and R. Wells. 2003. Effect of aerosols, clouds and
    atmospheric pollutants on the terrestrial biosphere. National
    Conference on Advances in Environmental Sciences and Engineering.
    India.

**[2004]{.underline}**

1.  Booker, F. 2004. Influence of ozone on ribonuclease activity in
    wheat (*Triticum aestivum* L.) leaves. Physiologia Plantarum
    120:249-255.

2.  Booker, F.L., E.L. Fiscus, and J.E. Miller. 2004. Combined effects
    of elevated atmospheric carbon dioxide and ozone on soybean
    whole-plant water use. Environmental Management: in press.

3.  Booker, F.L., K.O. Burkey, K. Overmyer and A.M. Jones. 2004.
    Differential responses of G-protein *Arabidopsis thaliana* mutants
    to ozone. New Phytologist.

4.  Booker, F.L., Fiscus, E.L., and Miller, J. E. 2004. The role of
    ozone flux in the suppression of ozone injury by elevated carbon
    dioxide in soybean. Plant Cell and Environment.

5.  Booker, F.L., J.E. Miller, E.L. Fiscus, W.A. Pursley and L.A.
    Stefanski. 2004. Comparative effects of rooting environment on
    soybean (*Glycine max* (L.) Merr.\] responses to elevated CO~2~ and
    O~3~. Plant, Cell and Environment.

6.  Booker, F.L., S.A. Prior, H.A. Torbert, E.L. Fiscus, W.A. Pursley
    and S. Hu. 2004. Influence of elevated CO~2~ and O~3~ on soybean
    residue chemistry, decomposition and microbial biomass. Plant, Cell
    and Environment.

7.  Burkey, K.O., Heagle, A.S., Miller, J.E. and E.L. Fiscus. 2004.
    Assessment of ambient ozone effects on vegetation using snap bean as
    a bio-indicator species. Journal of Environmental Quality.

8.  Burkey, K.O., H.S. Neufeld, L. Souza, A. H. Chappelka, A.W.
    Davison. 2004. Seasonal profiles of leaf ascorbic acid metabolism in
    ozone-sensitive wildflowers. Environmental Pollution.

9.  Fiscus, E.L. and F. L. Booker. 2004. Response of soybean leaf water
    relations to elevated CO~2~. Plant, Cell and Environment.

10. Fiscus, E.L., Booker, F.L. 2004. Soybean (*Glycine max*) leaf water
    relations responses to elevated CO~2~ are influenced by cultural
    conditions. Physiologia Plantarum.

11. Neufeld, H.S., A.W. Davison, A. H. Chappelka, K.O. Burkey, P.L.
    Finkelstein. 2004. Foliar injury caused by exposure to ozone reduces
    the absorbance of light in leaves of cutleaf coneflower (*Rudbeckia
    laciniata var. digitata*). Southeastern Biology.

12. Peoples, S., H.S. Neufeld, P.L. Finkelstein A.W. Davison, A. H.
    Chappelka, K.O. Burkey. 2004. Seasonal development of stand
    structure for cutleaf coneflower (*Rudbeckia laciniata*) at two
    sites in the Great Smoky Mountains National Park: Influences on
    ozone uptake. Southeastern Biology.

13. Reid, C. D. and E. L. Fiscus. 2004. Is the rice yield response to
    elevated CO~2~ and ozone affected by resource availability? Global
    Change Biology.