Genetic control of responses to interacting tropospheric ozone and CO2 in Populus tremuloides

D. F. Karnosky; G. K. Podila; Z. Gagnon; P. Pechter; A. Akkapeddi; Y. Sheng; D. E. Riemenschneider; M. D. Coleman; R. E. Dickson; J. G. Isebrands

doi:10.1016/S0045-6535(97)10128-X

Genetic control of responses to interacting tropospheric ozone and CO₂ in Populus tremuloides

D. F. Karnosky, G. K. Podila, Z. Gagnon, P. Pechter, A. Akkapeddi, Y. Sheng, D. E. Riemenschneider, M. D. Coleman, R. E. Dickson, J. G. Isebrands

Natural Resources Research Institute

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

We exposed trembling aspen (Populus tremuloides Michx.) clones differing in tropospheric ozone (O₃) tolerance in various open-top chamber studies for three growing seasons, and examined the effects of O₃, CO₂, and O₃ + CO₂ on growth and physiological processes. Ozone in the range of 80 ppm hr (Sum 00) per growing season decreased height, diameter, and stem and leaf biomass slightly in a tolerant clone but severely in a sensitive clone. Elevated CO₂ (150 ppm over ambient) did not compensate for the O₃ effects. Antioxidant enzyme analysis showed elevated SOD levels in the tolerant done but not in the sensitive clone following O₃ exposure. Northern blot analysis indicated that the chloroplastic and cytosolic Cu/Zn SOD's were significantly increased in response to O₃ in the tolerant but not the sensitive clone. Currently, we are conducting molecular analysis to determine the functional significance of SOD's in regulating O₃ tolerance in aspen.

Original language	English (US)
Pages (from-to)	807-812
Number of pages	6
Journal	Chemosphere
Volume	36
Issue number	4-5
DOIs	https://doi.org/10.1016/S0045-6535(97)10128-X
State	Published - Feb 1998

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This researchw as sponsored in part by the National Council of the Paper Industry McIntire-Stennis Program, and the USFS Northern Global Change. Program.

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10.1016/S0045-6535(97)10128-X

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@article{3ac4ffa200cb4bbc87539c7a39b4fd1e,

title = "Genetic control of responses to interacting tropospheric ozone and CO2 in Populus tremuloides",

abstract = "We exposed trembling aspen (Populus tremuloides Michx.) clones differing in tropospheric ozone (O3) tolerance in various open-top chamber studies for three growing seasons, and examined the effects of O3, CO2, and O3 + CO2 on growth and physiological processes. Ozone in the range of 80 ppm hr (Sum 00) per growing season decreased height, diameter, and stem and leaf biomass slightly in a tolerant clone but severely in a sensitive clone. Elevated CO2 (150 ppm over ambient) did not compensate for the O3 effects. Antioxidant enzyme analysis showed elevated SOD levels in the tolerant done but not in the sensitive clone following O3 exposure. Northern blot analysis indicated that the chloroplastic and cytosolic Cu/Zn SOD's were significantly increased in response to O3 in the tolerant but not the sensitive clone. Currently, we are conducting molecular analysis to determine the functional significance of SOD's in regulating O3 tolerance in aspen.",

author = "Karnosky, {D. F.} and Podila, {G. K.} and Z. Gagnon and P. Pechter and A. Akkapeddi and Y. Sheng and Riemenschneider, {D. E.} and Coleman, {M. D.} and Dickson, {R. E.} and Isebrands, {J. G.}",

note = "Funding Information: ACKNOWLEDGMENT This researchw as sponsored in part by the National Council of the Paper Industry McIntire-Stennis Program, and the USFS Northern Global Change. Program.",

year = "1998",

month = feb,

doi = "10.1016/S0045-6535(97)10128-X",

language = "English (US)",

volume = "36",

pages = "807--812",

journal = "Chemosphere",

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T1 - Genetic control of responses to interacting tropospheric ozone and CO2 in Populus tremuloides

AU - Karnosky, D. F.

AU - Podila, G. K.

AU - Gagnon, Z.

AU - Pechter, P.

AU - Akkapeddi, A.

AU - Sheng, Y.

AU - Riemenschneider, D. E.

AU - Coleman, M. D.

AU - Dickson, R. E.

AU - Isebrands, J. G.

N1 - Funding Information: ACKNOWLEDGMENT This researchw as sponsored in part by the National Council of the Paper Industry McIntire-Stennis Program, and the USFS Northern Global Change. Program.

PY - 1998/2

Y1 - 1998/2

N2 - We exposed trembling aspen (Populus tremuloides Michx.) clones differing in tropospheric ozone (O3) tolerance in various open-top chamber studies for three growing seasons, and examined the effects of O3, CO2, and O3 + CO2 on growth and physiological processes. Ozone in the range of 80 ppm hr (Sum 00) per growing season decreased height, diameter, and stem and leaf biomass slightly in a tolerant clone but severely in a sensitive clone. Elevated CO2 (150 ppm over ambient) did not compensate for the O3 effects. Antioxidant enzyme analysis showed elevated SOD levels in the tolerant done but not in the sensitive clone following O3 exposure. Northern blot analysis indicated that the chloroplastic and cytosolic Cu/Zn SOD's were significantly increased in response to O3 in the tolerant but not the sensitive clone. Currently, we are conducting molecular analysis to determine the functional significance of SOD's in regulating O3 tolerance in aspen.

AB - We exposed trembling aspen (Populus tremuloides Michx.) clones differing in tropospheric ozone (O3) tolerance in various open-top chamber studies for three growing seasons, and examined the effects of O3, CO2, and O3 + CO2 on growth and physiological processes. Ozone in the range of 80 ppm hr (Sum 00) per growing season decreased height, diameter, and stem and leaf biomass slightly in a tolerant clone but severely in a sensitive clone. Elevated CO2 (150 ppm over ambient) did not compensate for the O3 effects. Antioxidant enzyme analysis showed elevated SOD levels in the tolerant done but not in the sensitive clone following O3 exposure. Northern blot analysis indicated that the chloroplastic and cytosolic Cu/Zn SOD's were significantly increased in response to O3 in the tolerant but not the sensitive clone. Currently, we are conducting molecular analysis to determine the functional significance of SOD's in regulating O3 tolerance in aspen.

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