Full TGIF Record # 86483
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Web URL(s):https://academic.oup.com/aob/article/91/6/613/210647/Pseudoviviparous-Reproduction-of-Poa-alpina-var
    Last checked: 05/05/2017
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242350/
    Last checked: 05/05/2017
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242350/pdf/mcg067.pdf
    Last checked: 05/05/2017
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Publication Type:
i
Refereed
Author(s):Pierce, Simon; Stirling, Clare M.; Baxter, Robert
Author Affiliation:Pierce: Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom; Stirling: Institute of Terrestrial Ecology, Bangor Research Station, Bangor, Gwynedd, United Kingdom; Baxter: Department of Biological Sciences, University of Durham, Durham, United Kingdom
Title:Pseudoviviparous reproduction of Poa alpina var. vivipara L. (Poaceae) during long-term exposure to elevated atmospheric CO2
Source:Annals of Botany. Vol. 91, No. 6, May 2003, p. 613-622.
Publishing Information:London, Oxford University Press
# of Pages:10
Keywords:TIC Keywords: Vivipary; Asexual reproduction; Photosynthesis; Metabolism; Nutrient availability; Carbon dioxide; Poa alpina; Gas exchange
Abstract/Contents:"Pseudovivipary is an asexual reproductive strategy exhibited by some arctic/alpine grasses in which leafy plantlets are produced in place of seeds, with genetic conservation an advantage for stress tolerators in these nutrient-poor habitats. Photosynthetic metabolism and the development of this reproductive system were investigated under varying nutrient availability and predicted future CO2 partial pressure (pCO2). Poa alpina var. vivipara L., grown at present ambient pCO2 or ambient plus 340 μmol mol-1 CO2 (elevated pCO2), was supplied with either 0.05 mol m-3 phosphorus and 0·2 mol m-3 nitrogen, or 0·2 mol m-3 phosphorus and 1·0 mol m-3 nitrogen. Gas exchange measurements and determination of total non-structural carbohydrate (TNC), nitrogen and phosphorus contents revealed that parent plant leaf blade tissues experienced acclimatory loss of photosynthetic capacity after long-term growth at elevated pCO2 (particularly so when nutrient availability was low); there were associated reductions in photosynthetic nitrogen and phosphorus use efficiencies (PNUE and PPUE). In addition, decreased PNUE and PPUE were exhibited by plantlets grown at elevated pCO2 with low nutrient availability. Decreased reproductive dry matter in this treatment also resulted from a lack of reproductive initiation in daughter tillers, and altered phenology. Pseudoviviparous P. alpina is likely to be at a disadvantage in both vegetative and reproductive phases at predicted future elevated atmospheric CO2 concentrations, particularly where nutrients are scarce and when in competition with species experiencing less acclimatory loss of photosynthetic capacity."
Language:English
References:41
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pierce, S., C. M. Stirling, and R. Baxter. 2003. Pseudoviviparous reproduction of Poa alpina var. vivipara L. (Poaceae) during long-term exposure to elevated atmospheric CO2. Ann. Bot. 91(6):p. 613-622.
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Web URL(s):
https://academic.oup.com/aob/article/91/6/613/210647/Pseudoviviparous-Reproduction-of-Poa-alpina-var
    Last checked: 05/05/2017
    Requires: PDF Reader
    Notes: Guide page
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242350/
    Last checked: 05/05/2017
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4242350/pdf/mcg067.pdf
    Last checked: 05/05/2017
    Requires: PDF Reader
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