TY  - JOUR
AU  - Christ, M. M.
AU  - Ainsworth, E. A.
AU  - Nelson, R.
AU  - Schurr, U.
AU  - Walter, A.
TI  - Anticipated yield loss in field-grown soybean under elevated ozone can be avoided at the expense of leaf growth during early reproductive growth stages in favourable environmental conditions
JO  - The journal of experimental botany
VL  - 57
SN  - 0022-0957
CY  - Oxford
PB  - Univ. Press
M1  - PreJuSER-51635
SP  - 2267 - 2275
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - Ozone is a powerful oxidizing agent which is responsible for more damage to vegetation than any other air pollutant. In this study, leaf growth, photosynthesis, and carbohydrate content were analysed during the seed-filling growth stage of field-grown soybeans exposed to ambient air and 1.2 times ambient ozone concentration using a Free Air Concentration Enrichment (FACE) facility. By contrast to predictions based on controlled-environment and open-top chamber studies, final yield did not differ between treatments, although the cultivar used here was sensitive to ozone damage: growth and carbohydrate content of upper canopy leaves was reduced during the seed-filling stage in which an ozone-induced decrease of photosynthesis was present. However, 2004 was an ideal growing season in central Illinois and the cumulative ozone indices were lower than in previous years. Still, the results indicate that the anticipated yield loss under ozone concentrations was avoided at the expense of leaf growth, as reserves were diverted from vegetative to reproductive organs.
KW  - Biomass
KW  - Carbohydrate Metabolism: drug effects
KW  - Ozone: pharmacology
KW  - Photosynthesis: drug effects
KW  - Plant Leaves: drug effects
KW  - Reproduction: drug effects
KW  - Seeds: drug effects
KW  - Soybeans: drug effects
KW  - Weather
KW  - Ozone (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:16798846
UR  - <Go to ISI:>//WOS:000239389700014
DO  - DOI:10.1093/jxb/erj199
UR  - https://juser.fz-juelich.de/record/51635
ER  -