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A Deep Dive into the Aquatic Plant G...

Martin, Alex,

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A Deep Dive into the Aquatic Plant Genus Vallisneria (Hydrocharitaceae) /

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Deep Dive into the Aquatic Plant Genus Vallisneria (Hydrocharitaceae) // Alex Martin.
Author:	Martin, Alex,
Description:	1 electronic resource (74 pages)
Notes:	Source: Masters Abstracts International, Volume: 84-08.
Contained By:	Masters Abstracts International84-08.
Subject:	Botany. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29392936
ISBN:	9798368480503

A Deep Dive into the Aquatic Plant Genus Vallisneria (Hydrocharitaceae) /
Martin, Alex,

A Deep Dive into the Aquatic Plant Genus Vallisneria (Hydrocharitaceae) /Alex Martin. - 1 electronic resource (74 pages)

Source: Masters Abstracts International, Volume: 84-08.

Vallisneria is a cosmopolitan genus of aquatic plants comprising 14 species within the family Hydrocharitaceae. Previous research suggests Vallisneria is a more speciose genus than current taxonomy indicates, and there remains contention on the level of species diversity within the genus. In order to address some of these taxonomic issues, this study estimates phylogenetic relationships within the genus using a previously published molecular dataset augmented with previously unsampled species. Maximum likelihood analyses were employed for all molecular data partitions (e.g., nrITS, cpDNA, and combined nuclear and cpDNA datasets) resulting in an updated hypothesis for the phylogenetic relationships within the genus. An ancestral state reconstruction was estimated for the two growth habits shown within Vallisneria (caulescent and rosulate). Additionally, information on the historical biogeography was pulled from previous research to estimate the geographic origin for Vallisneria and to estimate dispersal events within the evolutionary history of the genus. Based on our findings, we recommend the resurrection of two Vallisneria species (V. gracilis and V. neotropicalis), and formally recognize and describe a new species (V. jacobsii sp. provis.). Morphological data was shown to be useful for species delimitation, but many features were inconsistent or provided too much phenotypic plasticity for use in phylogenetic reconstruction, despite the utilization of a common garden experiment. We also show the presence of naturally occurring Vallisneria hybrids within Northern Territory, Australia, and give conclusive evidence that non-native hybrids are being used for a restoration project in Crystal River, Florida. Pertinent literature is reviewed over the following topics: angiosperm evolution and the occurrence of aquatic plants, systematics of Hydrocharitaceae and Vallisneria, taxonomy, and ecology.

English

ISBN: 9798368480503Subjects--Topical Terms:

516217
Botany.
Subjects--Index Terms:

Hydrocharitaceae

A Deep Dive into the Aquatic Plant Genus Vallisneria (Hydrocharitaceae) /
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500 $a Advisors: Mort, Mark Committee members: Kelly, John; Hileman, Lena; Les, Donald.
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520 $a Vallisneria is a cosmopolitan genus of aquatic plants comprising 14 species within the family Hydrocharitaceae. Previous research suggests Vallisneria is a more speciose genus than current taxonomy indicates, and there remains contention on the level of species diversity within the genus. In order to address some of these taxonomic issues, this study estimates phylogenetic relationships within the genus using a previously published molecular dataset augmented with previously unsampled species. Maximum likelihood analyses were employed for all molecular data partitions (e.g., nrITS, cpDNA, and combined nuclear and cpDNA datasets) resulting in an updated hypothesis for the phylogenetic relationships within the genus. An ancestral state reconstruction was estimated for the two growth habits shown within Vallisneria (caulescent and rosulate). Additionally, information on the historical biogeography was pulled from previous research to estimate the geographic origin for Vallisneria and to estimate dispersal events within the evolutionary history of the genus. Based on our findings, we recommend the resurrection of two Vallisneria species (V. gracilis and V. neotropicalis), and formally recognize and describe a new species (V. jacobsii sp. provis.). Morphological data was shown to be useful for species delimitation, but many features were inconsistent or provided too much phenotypic plasticity for use in phylogenetic reconstruction, despite the utilization of a common garden experiment. We also show the presence of naturally occurring Vallisneria hybrids within Northern Territory, Australia, and give conclusive evidence that non-native hybrids are being used for a restoration project in Crystal River, Florida. Pertinent literature is reviewed over the following topics: angiosperm evolution and the occurrence of aquatic plants, systematics of Hydrocharitaceae and Vallisneria, taxonomy, and ecology.
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650 4 $a Botany. $3 516217
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Systematic biology. $3 3173492
650 4 $a Ecology. $3 516476
653 $a Hydrocharitaceae
653 $a Phylogenetics
653 $a Systematics
653 $a Taxonomy
653 $a Vallisneria
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690 $a 0792
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710 2 $a University of Kansas. $b Ecology & Evolutionary Biology. $e degree granting institution. $3 3765719
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773 0 $t Masters Abstracts International $g 84-08.
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