Investigation on the genetic diversity of Phragmites stands using genomic fingerprinting

Neuhaus, D.; Kühl, Harald; Kohl, Johannes‐Günter; Dörfel, Peter; Börner, Thomas

doi:10.1016/0304-3770(93)90034-t

Cited by 72 publications

(32 citation statements)

References 19 publications

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“…From recent investigations it is known that aquatic macrophytes may genetically vary within a habitat, for example Vallisneria americana along a depth profile in Detroit River (Lokker et al, 1994). Different genotypes within a lake have also been shown for Phramites australis (Neuhaus et al, 1993). Phragmites australis is mainly propagated vegetatively (Sculthorpe, 1967) as are many submerged macrophytes and this property would support the formation of genetically uniform clones.…”

Section: Discussionmentioning

confidence: 99%

Aquatic macrophytes as tools for lake management

Melzer

1999

The Ecological Bases for Lake and Reservoir Management

103

113

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Aquatic macrophytes can serve as useful indicators of water pollution along the littoral of lakes. In Bavaria, the submerged vegetation of about 100 lakes has been investigated by SCUBA diving over the past decade to evaluate the state of nutrient pollution. All lakes are marl lakes located in the northern calcareous alps and the prealpine region. The lakes differ in size, morphology, water residence time, nutrient loading, trophic status, recreational activities, and other characteristics. In all cases the entire shoreline of the lakes has been investigated. Among the investigated lakes are the three biggest Bavarian lakes, i.e. Lake Chiemsee, Lake Starnberg and Lake Ammersee. Mapping of the submerged vegetation occurred in four different depth zones, and variable shoreline sections. The length of each section was determined by the uniformity of the vegetation; as it changed, a new section was designated. Within each section and zone species were recorded and abundance of all observed macrophytes was estimated semi-quantitatively on a five-point scale. Nine different groups of macrophytes were recognised, including, in total, 45 different species of macrophytes. On the basis of this catalogue of indicator species, in combination with the abundance of the species, a 'macrophyte index' was devised, which ranges from 1 (unpolluted) to 5 (heavily polluted). Six groups of values of the macrophyte index, each represented by a different colour or grey-scale (in this publication), are presented to allow a clear illustration of the results. Important information for the successful restoration of lakes in Upper Bavaria has been obtained from the distribution patterns of the submerged vegetation. Many unknown waste water inflows or diffuse sources could be detected due to abrupt changes in the macrophyte index. Furthermore, the success of waste water removal by 'ring canalisation', resulting in a re-oligotrophication of many Bavarian lakes can be followed by changes in the macrophyte index.

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Section: Discussionmentioning

confidence: 99%

Aquatic macrophytes as tools for lake management

Melzer

1999

The Ecological Bases for Lake and Reservoir Management

103

113

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“…Weisner and Granéli (1989) suggested that excessive eutrophication could affect common reed growth negatively, through the deposition of highly reducing sediments where the need for oxygen in below-ground parts could be greater. Neuhaus et al (1993) questioned whether eutrophication alone was sufficient to explain the decline of P. australis. They hypothesized that genetic diversity may be the most important factor in stabilizing common reed populations.…”

Section: Population Dynamicsmentioning

confidence: 99%

“…They found that homogeneous stands declined rapidly despite their mesotrophic status, while stands with greater genetic diversity declined more slowly, even under eutrophic conditions. They suggested that the monoclonal stands may be limited in their adaptive response to changing site conditions (Neuhaus et al 1993). Granéli (1987) found growth of P. australis to be regulated by density and shoot mass.…”

Section: Population Dynamicsmentioning

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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-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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“…These roles depend, however, on the stability of stands and their ability to adapt to site conditions. The latter is related to genetic diversity since, as Neuhaus et al (1993) emphasized, 'the higher the number of clones in a stand, the better is their ability to adapt to unfavorable conditions'. According .…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of riverine reed stands indicating the water regime of the habitat

Engloner

Szegő

2016

Ecological Indicators

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Although genetic diversity of reed stands developing in habitats with unchanged water levels have been frequently investigated, little is known about reed propagation along rivers, where fluctuating water levels may provide various conditions for germination and seedling development.The present paper evaluates genetic diversity of reed stands grown in (i) an oxbow with significant water level fluctuations related to the flood events in the main river; (ii) a separated oxbow which has lost connection to the main channel; and (iii) artificially controlled running water with low water level fluctuation. At each site, reed stands were investigated along transects parallel to the shore and multilocus phenotypes were determined by microsatellite analysis.

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Investigation on the genetic diversity of Phragmites stands using genomic fingerprinting

Cited by 72 publications

References 19 publications

Aquatic macrophytes as tools for lake management

Aquatic macrophytes as tools for lake management

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

Genetic diversity of riverine reed stands indicating the water regime of the habitat

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