Morpho-anatomical adaptations of Potamogeton polygonus (Potamogetonaceae) to lotic and lentic environments

Lusa, Makeli Garibotti; Boeger, Maria Regina Torres; Moço, Maria Cecília de Chiara; Bona, Cleusa

doi:10.1590/s2175-78602011000400018

Cited by 8 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In his book on aquatic vascular plants, Sculthorpe (1967) connects morpho-anatomical traits with physiological and functional aspects. Experimental and observational studies, mainly at the species level, led to the conclusion that the life in a transitional zone between land and water, and in fluctuating water conditions entails a variety of adaptive responses, and hence a greater phenotypic plasticity, especially in amphibious and emergent hydrophytes (Barrett et al 1993;Crawford 2008;Lusa et al 2011). In these groups, heterophylly is widespread, exhibiting submerged and aerial leaf forms adapted to the respective milieu (Sculthorpe 1967;Mommer et al 2005;Li et al 2019).…”

Section: Morpho-anatomical Charactersmentioning

confidence: 99%

Living between land and water – structural and functional adaptations in vegetative organs of bladderworts

et al. 2021

View full text Add to dashboard Cite

Aims The carnivorous Utricularia (Lentibulariaceae) has an anatomically simple and seemingly rootless vegetative body. It occupies a variety of wetlands and inland waters and shows a broad range of life forms. Here, we aimed to elucidate structural and functional traits in various hydric conditions. Furthermore, we intended to evaluate morpho-anatomical adaptations in correlation with life forms. Methods Morpho-anatomical characteristics typical for hydrophytes of all life forms were investigated by light microscopy on 13 Utricularia taxa, compared to one Pinguicula and two Genlisea taxa, and assessed by multivariate analyses. Results Vegetative structures of Utricularia and Genlisea showed reduced cortical, supporting, and vascular tissues. With increasing water table, leaves were thinner, and narrower or dissected, and submerged organs tended to contain chloroplasts in parenchymatic and epidermal cells. In some main stolons, an endodermis with Casparian strips was visible. Large gas chambers, including a novel ‘crescent’ and a special ‘hollow’ aerenchyma pattern, were found in amphibious to free-floating taxa. Conclusions The evolutionary transfer of carnivory from aerial to subterranean organs in Genlisea, and even more in Utricularia, coincides with a highly simplified anatomy, which is adapted to a broad variety of hydric conditions and compensates for structural innovations in the uptake of nutrients.

show abstract

Section: Morpho-anatomical Charactersmentioning

confidence: 99%

Living between land and water – structural and functional adaptations in vegetative organs of bladderworts

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Species-specific affiliation with freshwater habitats makes them important bioindicators that are useful for the classification of the aquatic plant communities and the evaluation of water quality (Holmes et al, 1998;Peng et al, 2008;Lukacs et al, 2009). Pondweeds vary in their adaptations to chemical composition, temperature, and the flow rate of water (Lusa et al, 2011;Robionek et al, 2015). For example, S. pectinata (L.) Börner often colonizes disturbed and heavily polluted aquatic communities (Dixon et al, 2006), whereas in contrast, other species such as P. friesii Rupr.…”

mentioning

confidence: 99%

Finding the pond through the weeds: eDNA reveals underestimated diversity of pondweeds

2018

View full text Add to dashboard Cite

Premise of the StudyThe detection of environmental DNA (eDNA) using high‐throughput sequencing has rapidly emerged as a method to detect organisms from environmental samples. However, eDNA studies of aquatic biomes have focused on surveillance of animal species with less emphasis on plants. Pondweeds are important bioindicators of freshwater ecosystems, although their diversity is underestimated due to difficulties in morphological identification and monitoring.MethodsA protocol was developed to detect pondweeds in water samples using atpB‐rbcL and ITS2 markers. The water samples were collected from the Grand River within the rare Charitable Research Reserve, Ontario (RARE). Short fragments were amplified using primers targeting pondweeds, sequenced on an Ion Torrent Personal Genome Machine, and assigned to the taxonomy using a local DNA reference library and GenBank.ResultsWe detected two species earlier documented at the experimental site during ecological surveys (Potamogeton crispus and Stuckenia pectinata) and three species new to the RARE checklist (P. foliosus, S. filiformis, and Zannichellia palustris).DiscussionOur targeted approach to track the species composition of pondweeds in freshwater ecosystems revealed underestimation of their diversity. This result suggests that eDNA is an effective tool for monitoring plant diversity in aquatic habitats.

show abstract

“…The relationship between soil flooding or submersion and the formation of aerenchyma, described by Jackson and Armstrong (1999), had already demonstrated a tendency for increase in number and size of the air spaces in submersed groups of other angiosperms. The reduction in number of xylem elements has also been described for other families of aquatic plants such as Ceratophyllaceae, Haloragaceae, Hydrocharitaceae, Lentibulariaceae and Potamogetonaceae (Arber, 1920;Metcalfe and Chalk, 1950;Ancibor, 1979;Kaplan, 2001;Lusa et al, 2011). It is in the submersed life form that the interaction between the individual plant and aquatic environment is most acute (Sculthorpe, 1967).…”

Section: Discussionmentioning

confidence: 89%

Morphological and anatomical patterns in Pontederiaceae (Commelinales) and their evolutionary implications

et al. 2016

View full text Add to dashboard Cite

Pontederiaceae include six genera and approximately 35 species of aquatic plants. The family exhibits great variation in morphology that makes the characterization of species and the understanding of infrafamilial relationships difficult. Twenty species were studied from collections made at the reproductive stage, aiming to establish morphological and anatomical patterns to better understand the taxonomy and evolution of the family. In order to include all species of the family, herbarium specimens were analyzed together with information available in the literature. Four morphological patterns were established for the family: Pattern I-stems with short internodes and alternate, petiolate leaves; Pattern II-stems with long internodes and alternate, petiolate leaves; Pattern III-stems with long internodes and alternate, sessile leaves; Pattern IV-stems with long internodes and verticillate, sessile leaves. The stems have atactosteles and in the species of Pattern I they are rhizomatous. The leaf petiole, the reproductive axis, the inflorescence bract petiole and the peduncle have monosteles and are distinguished from one another by the number of rings of collateral vascular bundles, and by the presence or absence of a fistula. The morphological patterns may represent synapomorphies of infrageneric groups and are related to the life form of the species. Based on current phylogenies, Pattern I is a plesiomorphic condition, including emergent species, and Patterns III and IV are the most derived and include submersed species. This is consistent with variation in water availability in the environment having influenced the diversification of Pontederiaceae during the course of their evolution.

show abstract

Morpho-anatomical adaptations of Potamogeton polygonus (Potamogetonaceae) to lotic and lentic environments

Cited by 8 publications

References 34 publications

Living between land and water – structural and functional adaptations in vegetative organs of bladderworts

Living between land and water – structural and functional adaptations in vegetative organs of bladderworts

Finding the pond through the weeds: eDNA reveals underestimated diversity of pondweeds

Morphological and anatomical patterns in Pontederiaceae (Commelinales) and their evolutionary implications

Contact Info

Product

Resources

About