Pollen performance of Raphanus sativus (Brassicaceae) declines in response to elevated [CO₂]

Although increases in atmospheric [CO₂] are known to affect plant physiology, growth and reproduction, understanding of these effects is limited because most studies of reproductive consequences focus solely on female function. Therefore, we examined the effects of CO₂ enrichment on male function in...

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Bibliographic Details
Published in:Sexual plant reproduction 2010-12, Vol.23 (4), p.325-336
Main Authors: Marshall, Diane L, Tyler, Anna P, Abrahamson, Nathan J, Avritt, Joy J, Barnes, Melanie G, Larkin, Leah L, Medeiros, Juliana S, Reynolds, Jerusha, Shaner, Marieken G. M, Simpson, Heather L, Maliakal-Witt, Satya
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Carbon Dioxide - metabolism
Cell Biology
Components of male fitness
Ecosystem
Elevated [CO₂]
Flowers
Life Sciences
Original Article
Physiological aspects
Plant physiology
Plant Sciences
Pollen - growth & development
Pollen - metabolism
Pollen production
Raphanus - growth & development
Raphanus - metabolism
Raphanus sativus
Seed paternity
Seeds - growth & development
Seeds - metabolism
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Summary:Although increases in atmospheric [CO₂] are known to affect plant physiology, growth and reproduction, understanding of these effects is limited because most studies of reproductive consequences focus solely on female function. Therefore, we examined the effects of CO₂ enrichment on male function in the annual Raphanus sativus. Pollen donors grown under elevated [CO₂] initially sired a higher proportion of seeds per fruit than ambient [CO₂]-grown plants when each was tested against two different standard competitors; however, by the end of the 5-month experiment, these pollen donors sired fewer seeds than ambient [CO₂]-grown plants and produced a lower proportion of viable pollen grains. The results of this experiment confirm that elevated [CO₂] can alter reproductive success. Additionally, the change in response to elevated [CO₂] over time varied among pollen donor families; thus, changes in [CO₂] could act as a selective force on this species.
ISSN:0934-0882
1432-2145
DOI:10.1007/s00497-010-0146-8