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Tytuł pozycji:

Elevated ozone reduces photosynthetic carbon gain by accelerating leaf senescence of inbred and hybrid maize in a genotype-specific manner.

Tytuł:
Elevated ozone reduces photosynthetic carbon gain by accelerating leaf senescence of inbred and hybrid maize in a genotype-specific manner.
Autorzy:
Yendrek CR; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Erice G; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Montes CM; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Plant Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Tomaz T; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Sorgini CA; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Crop Sciences, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Brown PJ; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Crop Sciences, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
McIntyre LM; Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL, 32610, USA.; Genetics Institute, University of Florida, Gainesville, FL, 32610, USA.
Leakey ADB; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Plant Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Crop Sciences, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.
Ainsworth EA; Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Plant Biology, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Department of Crop Sciences, University of Illinois at Urbana Champaign, Urbana, IL, 61801, USA.; Global Change and Photosynthesis Research Unit, USDA ARS, Urbana, IL, 61801, USA.
Źródło:
Plant, cell & environment [Plant Cell Environ] 2017 Dec; Vol. 40 (12), pp. 3088-3100. Date of Electronic Publication: 2017 Oct 17.
Typ publikacji:
Journal Article
Język:
English
Imprint Name(s):
Publication: Hoboken, NJ : John Wiley & Sons Ltd.
Original Publication: Oxford, UK : Blackwell Scientific Publications
MeSH Terms:
Carbon Dioxide/*metabolism
Ozone/*pharmacology
Photosynthesis/*physiology
Zea mays/*physiology
Circadian Rhythm ; Genotype ; Photosynthesis/radiation effects ; Plant Leaves/drug effects ; Plant Leaves/genetics ; Plant Leaves/physiology ; Plant Stomata/drug effects ; Plant Stomata/genetics ; Plant Stomata/physiology ; Plant Transpiration/physiology ; Plant Transpiration/radiation effects ; Seasons ; Zea mays/drug effects ; Zea mays/genetics
Grant Information:
U24 DK097209 United States DK NIDDK NIH HHS
Contributed Indexing:
Keywords: Zea mays; photosynthesis; senescence; stomatal conductance; tropospheric ozone
Substance Nomenclature:
142M471B3J (Carbon Dioxide)
66H7ZZK23N (Ozone)
Entry Date(s):
Date Created: 20171019 Date Completed: 20180305 Latest Revision: 20191219
Update Code:
20240105
DOI:
10.1111/pce.13075
PMID:
29044553
Czasopismo naukowe
Exposure to elevated tropospheric ozone concentration ([O 3 ]) accelerates leaf senescence in many C 3 crops. However, the effects of elevated [O 3 ] on C 4 crops including maize (Zea mays L.) are poorly understood in terms of physiological mechanism and genetic variation in sensitivity. Using free air gas concentration enrichment, we investigated the photosynthetic response of 18 diverse maize inbred and hybrid lines to season-long exposure to elevated [O 3 ] (~100 nl L -1 ) in the field. Gas exchange was measured on the leaf subtending the ear throughout the grain filling period. On average over the lifetime of the leaf, elevated [O 3 ] led to reductions in photosynthetic CO 2 assimilation of both inbred (-22%) and hybrid (-33%) genotypes. There was significant variation among both inbred and hybrid lines in the sensitivity of photosynthesis to elevated [O 3 ], with some lines showing no change in photosynthesis at elevated [O 3 ]. Based on analysis of inbred line B73, the reduced CO 2 assimilation at elevated [O 3 ] was associated with accelerated senescence decreasing photosynthetic capacity and not altered stomatal limitation. These findings across diverse maize genotypes could advance the development of more O 3 tolerant maize and provide experimental data for parameterization and validation of studies modeling how O 3 impacts crop performance.
(© 2017 John Wiley & Sons Ltd.)

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