Isozyme variation among populations of the clonal species, Phragmites australis (Cav.) Trin. ex Steudel

Pellegrin, Dana; Hauber, Donald P.

doi:10.1016/s0304-3770(98)00120-x

Cited by 71 publications

(51 citation statements)

References 26 publications

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“…Koppitz (1999) suggested that gene flow occurs between contiguous populations. Pellegrin and Hauber (1999) conducted several studies on isozyme variation in P. australis populations from the United States and found results similar to those from European populations. Lower levels of percent polymorphic loci and number of alleles per locus were documented in P. australis populations than were reported in several asexual terrestrial species (Pellegrin and Hauber 1999).…”

Section: Description and Account Of Variationmentioning

confidence: 76%

“…Extensive clonal growth in P. australis results in population clusters. For example, 19 populations located along the US Gulf Coast from Texas to the Florida panhandle shared a single multilocus phenotype (Pellegrin and Hauber 1999). Keller (2000a) used RAPD (Random Amplified Polymorphic DNA) techniques to identify genetic relationships among and within populations of P. australis in the Charles River watershed in Massachusetts, USA.…”

Section: Description and Account Of Variationmentioning

confidence: 99%

See 1 more Smart Citation

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

Mal¹,

Narine²

2004

Can. J. Plant Sci.

100

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-common reed, is a perennial, emergent aquatic plant with annual cane-like stems developed from an extensive rhizome system. It grows in low-lying wet areas such as fresh and salt-water marshes, drainage ditches, shallow lake edges, sandy banks, roadsides, woodlands and rocky places. Stems can reach up to 6.0 m in height, vary in diameter from 4 to10 mm and have 10 to 25 cm long hollow internodes. Clones are extended by perennial rhizomes with extensive aerenchymatous tissue that supplies oxygen. Roots develop from rhizomes and other submerged parts of shoots. Leaves are smooth, alternate with narrow-lanceolate laminae, 20 to 70 cm long and 1 to 5 cm broad, and tapering to long slender points. The inflorescence is a terminal panicle, often 30 cm long, dull purple to yellow, with main branches bearing many spikelets. Seed production and germination are extremely variable and comparatively rare in many populations. Phragmites australis carries out photosynthesis through the C 3 pathway (or a variation thereof). Studies of genetic variation through isozyme and other molecular methods suggest that the populations are very closely related, and that variation in the metapopulation is small. Chloroplast DNA sequences of two non-coding regions indicate that non-native introduced genotypes of P. australis have displaced native genotypes in parts of North America. Phragmites australis often forms extensive monocultures in North America. As a consequence, habitat quality and species diversity have been documented to decline. However, in roadside populations it is effective in taking up many typical heavy metals that originate from nearby highways and buildings. Phragmites australis is found in all Canadian provinces and the Northwest Territories, but not in the Yukon Territory or Nunavut. The infestation of P. australis is most severe in the Great Lakes region and its migration is primarily mediated through rivers, canals and waterways but roadways are increasingly becoming important. Changes in the water regime have been linked to its success and could ultimately result in changes to the floristic composition of a habitat. Rodeo™, an aqueous solution of the isopropylamine salt of glyphosate, is most frequently used to control P. australis populations. Other methods of control include cutting, burning, and drainage of the species' habitat. As P. australis is considered to be invasive in North America, introduction of biological control agents is now being investigated. Can. J. Plant Sci. 84: 365-396. Le roseau commun Phragmites australis (Cav.) Trin. ex Steud. est une vivace aquatique dont le vaste système de rhizomes donne chaque année des tiges ressemblant à des cannes. L'espèce pousse dans les dépressions humides comme les marais d'eau douce et salants, les fossés de drainage, la rive des lacs peu profonds, les berges sablonneuses, le bord des routes, les boisés et les endroits rocailleux. Les tiges atteignent parfois jusqu'à 6,0 m de hauteur et leur diamètre varie de 4 à 10 mm, avec de longues sections creuses de 10 à ...

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Section: Description and Account Of Variationmentioning

confidence: 76%

Section: Description and Account Of Variationmentioning

confidence: 99%

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

Mal¹,

Narine²

2004

Can. J. Plant Sci.

100

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“…However, little is known about the between-habitat genetic differentiation of P. australis on a small spatial scale (Pellegrin and Hauber, 1999;Guo et al, 2003;Gao et al, 2012). A preliminary investigation of the genetic diversity of this reed in the Songnen Prairie showed extensive genetic variability across a certain geographic range (Li et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Genetic and epigenetic diversity and structure of Phragmites australis from local habitats of the Songnen Prairie using amplified fragment length polymorphism markers

2016

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ABSTRACT. The genetic and epigenetic diversity and structure of naturally occurring Phragmites australis populations occupying two different habitats on a small spatial scale in the Songnen Prairie in northeastern China were investigated by assessing amplified fragment length polymorphisms (AFLPs) and methylation-sensitive amplified polymorphisms (MSAPs) through fluorescent capillary detection. The two groups of P. australis were located in a seasonal waterlogged lowlying and alkalized meadow with a pH of 8-8.5 and in an alkaline patch without accumulated rainwater and with a pH greater than 10. These groups showed high levels of genetic diversity at the habitat level based on the percentage of polymorphic bands (90.32, 82.56%), Nei's gene diversity index (0.262, 0.248), and the Shannon diversity index (0.407, 0.383). Although little is known about the between-habitat genetic differentiation of P. australis on a small spatial scale, our results implied significant genetic differentiation between habitats. Extensive epigenetic diversity within habitats, along with clear differentiation, was found. Specifically, the former habitat (Habitat 1, designated H1) harbored higher levels of genetic and epigenetic diversity than the latter (Habitat 2, designated H2), and population-level diversity was also high. This study represents one of few attempts to predict habitat-based genetic differentiation of reeds on a small scale. These assessments of genetic and epigenetic variation are integral aspects of molecular ecological studies on P. australis. Possible causes for within-and between-habitat genetic and epigenetic variations are discussed.

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“…Relatively few studies have focused on hygrophytes compared with aquatic plants. However, the importance of clonal growth in vegetation maintenance seems to be the case with hygrophytes and, thus, the seeds of hygrophytes are likely to possess other reproductive roles, such as dispersal (Pellegrin & Hauber 1999;Keller 2000;Galeuchet et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

Araki¹,

Kunii²

2008

Plant Species Biology

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. No seedlings were observed at plots where the ramets from rhizomes grew densely. In contrast, seedlings appeared in plots where all rhizomatous ramets were artificially cut. The number of seedlings corresponded to 17.5-39.5% of that of buried seeds. All these seedlings were submerged and died when it rained heavily. In the genotype analysis using allozyme detection, one of the phosphoglucoisomerase loci (Pgi-2) indicated a pair of alleles. Among eight plots (each plot was 50 or 60-cm square), four showed an excess of heterozygotes and two showed homozygote domination in the Pgi-2 genotype. These results suggest that: (i) seed germination is suppressed in crowded ramets; (ii) seedling survival is severely reduced by inundation; and (iii) the population is usually maintained by clonal growth. As germination is induced in open areas, it is hypothesized that the main role of seed is recovery after vegetation decline caused by environmental stresses or colonization to other areas without dense vegetation.

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Isozyme variation among populations of the clonal species, Phragmites australis (Cav.) Trin. ex Steudel

Cited by 71 publications

References 26 publications

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

The biology of Canadian weeds. 129. Phragmites australis (Cav.) Trin. ex Steud.

Genetic and epigenetic diversity and structure of Phragmites australis from local habitats of the Songnen Prairie using amplified fragment length polymorphism markers

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

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