Počet záznamů: 1  

Phenotypic traits of the Mediterranean Phragmites australis M1 lineage: differences between the native and introduced ranges

  1. 1.
    0472904 - BÚ 2017 RIV NL eng J - Článek v odborném periodiku
    Guo, Wen-Yong - Lambertini, C. - Guo, X. - Li, X.-Z. - Eller, F. - Brix, H.
    Phenotypic traits of the Mediterranean Phragmites australis M1 lineage: differences between the native and introduced ranges.
    Biological Invasions. Roč. 18, č. 9 (2016), s. 2551-2561. ISSN 1387-3547. E-ISSN 1573-1464
    Institucionální podpora: RVO:67985939
    Klíčová slova: comon reed * delta type * ecological fitting
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 2.473, rok: 2016

    The environmental conditions in the new ranges of introduced plant species are often different from the conditions in their native ranges, and invasive plant species have been assumed to adapt to different environmental conditions by rapid ecological evolution in the invasive range after the introduction. Another interpretation of the change in plant traits after their introduction, however, is ecological fitting, which is based on the inherently high phenotypic plasticity of the species rather than on evolution. The Mediterranean haplotype M1 lineage of the wetland grass Phragmites australis was introduced to the coastal wetlands along the Gulf Coast of North America, where it is exposed to a different climate compared to its original range. The climate in the native range is arid or temperate with dry and hot summers, whereas the climate in the introduced range is warmer and has a higher and more uniform precipitation than that in the native range. This warmer and more humid environment is likely to pose different selection pressures to the plants in the introduced range and thus cause rapid evolutionary change and phenotypic differentiation in the introduced range. Here, we compared phenotypic traits of the M1 lineage from the native and introduced ranges in a common garden experiment to study the processes assisting the successful spread in the introduced range. Overall, the native and introduced groups were similar, but we detected a few phenotypic traits that diverged. Ecological fitting could be the fundamental mechanism by which the P. australis M1 lineage survives and spreads in the introduced Gulf Coast region. However, further research is needed to assess how the diverging traits observed in our study in Denmark (lower photosynthetic rates, lower chlorophylls concentration and higher leaf K concentration for the introduced than for the native genotypes) are expressed in the two ranges.
    Trvalý link: http://hdl.handle.net/11104/0270115

     
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.