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Phylogenetic relationships within Ch...

Bell, Hester Louise.

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Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae./
作者:	Bell, Hester Louise.
面頁冊數:	174 p.
附註:	Adviser: J. Travis Columbus.
Contained By:	Dissertation Abstracts International68-01B.
標題:	Biology, Botany. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3246642

Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae.
Bell, Hester Louise.

Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae. - 174 p.

Adviser: J. Travis Columbus.

Thesis (Ph.D.)--The Claremont Graduate University, 2007.

Three main areas of study are covered by this dissertation: phylogenetic relationships within Chloridoideae based upon molecular evidence, patterns of codon usage and saturation in functional domains of ndhF from a sampling of Chloridoideae, and relationships within core Monanthochloinae as inferred from molecular, anatomical, and micromorphological evidence.Subjects--Topical Terms:

1017825
Biology, Botany.

Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae.
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100 1 $a Bell, Hester Louise. $3 1296330
245 1 0 $a Phylogenetic relationships within Chloridoideae (Poaceae) with emphasis on subtribe Monanthochloinae.
300 $a 174 p.
500 $a Adviser: J. Travis Columbus.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0030.
502 $a Thesis (Ph.D.)--The Claremont Graduate University, 2007.
520 $a Three main areas of study are covered by this dissertation: phylogenetic relationships within Chloridoideae based upon molecular evidence, patterns of codon usage and saturation in functional domains of ndhF from a sampling of Chloridoideae, and relationships within core Monanthochloinae as inferred from molecular, anatomical, and micromorphological evidence.
520 $a Analyses of a combined data set of ITS (nrDNA), trnL-F and ndhF (both cpDNA) provide strong support for the following order of divergence within Chloridoideae: Triraphis, an Eragrostis clade, and a Sporobolus clade. These are followed by two clades, one is comprised of primarily Old World and cosmopolitan taxa and the other is primarily New World. From Monanthochloinae, Aeluropus and Swallenia are not supported as members of the subtribe. There is strong support for a core Monanthochloinae of Distichlis, Monanthochloe, and Reederochloa. Additionally, this study provides a robust estimate of relationships that will help to reorder tribal and subtribal assignments within Chloridoideae.
520 $a Different patterns of amino acid and saturation were observed within the functional domains of ndhF. Codon usage in terminal taxa is not statistically significantly different from that inferred for an ancestral node. Variation is non-randomly distributed across the molecule and between functional domains. Lumenal domains are more variable and stromal and transmembrane domains are more highly conserved.
520 $a There is conflict between ITS (nrDNA) and the combined chloroplast ( trnL-F and ndhF) phylogenies in the position of three South American endemics (Distichlis humilis, D. laxiflora, and D. scoparia) within core Monanthochloinae. Additional study is required to correctly place these taxa within the clade. However, there are many characters that unite core Monanthochloinae: whole plant---dioecy, growth in saline/alkali soils, rhizomes and/or stolons, lemma nerve number of 7 to 13; leaf blade transection---colorless cells between all vascular bundles, bulliform cells similar in shape to colorless cells, metaxylem narrow, papillae on abaxial and adaxial surfaces, blades rarely flat slightly to strongly rolled; lemma micromorphology---abundant papillae frequently in pairs on adjacent long and short cells, overarching complexes of papillae surrounding microhairs and stomates with a single papilla on each subsidiary cell.
590 $a School code: 0047.
650 4 $a Biology, Botany. $3 1017825
690 $a 0309
710 2 0 $a The Claremont Graduate University. $3 1017403
773 0 $t Dissertation Abstracts International $g 68-01B.
790 $a 0047
790 1 0 $a Columbus, J. Travis, $e advisor
791 $a Ph.D.
792 $a 2007
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