Full TGIF Record # 196116
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DOI:10.1111/j.1469-8137.2011.03988.x
Web URL(s):https://nph.onlinelibrary.wiley.com/doi/full/10.1111/j.1469-8137.2011.03988.x
    Last checked: 07/10/2018
    Access conditions: Item is within a limited-access website
https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.2011.03988.x
    Last checked: 07/10/2018
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Publication Type:
i
Refereed
Author(s):Manzaneda, Antonio J.; Rey, Pedro J.; Bastida, Jesús M.; Weiss-Lehman, Christopher; Raskin, Evan; Mitchell-Olds, Thomas
Author Affiliation:Manzaneda, Rey, and Bastida: Departamento Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain; Manzaneda, Weiss-Lehman, Raskin and Mitchell-Olds: Department of Biology, Institute for Genome Sciences and Policy, Duke University, Durham, NC
Title:Environmental aridity is associated with cytotype segregation and polyploidy occurrence in Brachypodium distachyon (Poaceae)
Source:New Phytologist. Vol. 193, No. 3, February 2012, p. 797-805.
Publishing Information:Oxford, England: Blackwell Publishing, for the New Phytologist Trust
# of Pages:9
Related Web URL:https://nph.onlinelibrary.wiley.com/doi/abs/10.1111/j.1469-8137.2011.03988.x
    Last checked: 07/10/2018
    Notes: Abstract only
Keywords:TIC Keywords: Aridity; Brachypodium distachyon; Carbon isotope ratio; Climatic factors; Drought resistance; Environmental factors; Flowering date; Geographical distribution; Laser flow cytometry; Polyploidy; Precipitation rate; Stress factors; Tetraploidy; Water use; Water use legislation
Abstract/Contents:"The ecological and adaptive significance of plant polyploidization is not well understood and no clear pattern of association between polyploid frequency and environment has emerged. Climatic factors are expected to predict cytotype distribution. However, the relationship among climate, cytotype distribution and variation of abiotic stress tolerance traits has rarely been examined. Here, we use flow cytometry and root-tip squashes to examine the cytotype distribution in the temperate annual grass Brachypodium distachyon in 57 natural populations distributed across an aridity gradient in the Iberian Peninsula. We further investigate the link between environmental aridity, ploidy, and variation of drought tolerance and drought avoidance (flowering time) traits. Distribution of diploids (2n = 10) and allotetraploids (2n = 30) in this species is geographically structured throughout its range in the Iberian Peninsula, and is associated with aridity gradients. Importantly, after controlling for geographic and altitudinal effects, the link between aridity and polyploidization occurrence persisted. Water-use efficiency varied between ploidy levels, with tetraploids being more efficient in the use of water than diploids under water-restricted growing conditions. Our results indicate that aridity is an important predictor of polyploid occurrence in B. distachyon, suggesting a possible adaptive origin of the cytotype segregation."
Language:English
References:53
Note:Distribution maps
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Manzaneda, A. J., P. J. Rey, J. M. Bastida, C. Weiss-Lehman, E. Raskin, and T. Mitchell-Olds. 2012. Environmental aridity is associated with cytotype segregation and polyploidy occurrence in Brachypodium distachyon (Poaceae). New Phytol. 193(3):p. 797-805.
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DOI: 10.1111/j.1469-8137.2011.03988.x
Web URL(s):
https://nph.onlinelibrary.wiley.com/doi/full/10.1111/j.1469-8137.2011.03988.x
    Last checked: 07/10/2018
    Access conditions: Item is within a limited-access website
https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.2011.03988.x
    Last checked: 07/10/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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