نتایج جستجو برای: trnd atpb

تعداد نتایج: 257  

2006
PETRA KORALL DAVID S. CONANT HARALD SCHNEIDER KUNIHIKO UEDA HARUFUMI NISHIDA KATHLEEN M. PRYER

—The phylogenetic position of Cystodium J. Sm. is studied here for the first time using DNA sequence data. Based on a broad sampling of leptosporangiate ferns and two plastid genes (rbcL and atpB), we show that Cystodium does not belong to the tree fern family Dicksoniaceae, as previously thought. Our results strongly support including Cystodium within the large polypod clade, and suggest its c...

Journal: :Molecular phylogenetics and evolution 2004
Sangtae Kim Douglas E Soltis Pamela S Soltis Michael J Zanis Youngbae Suh

Based on analyses of combined data sets of three genes (18S rDNA, rbcL, and atpB), phylogenetic relationships among the early-diverging eudicot lineages (Ranunculales, Proteales, Trochodendraceae, Sabiaceae, and Buxaceae) remain unclear, as are relationships within Ranunculales, especially the placement of Eupteleaceae. To clarify relationships among these early-diverging eudicot lineages, we a...

Journal: :American journal of botany 2006
Akiko Soejima Jun Wen

Seventy-nine species representing 12 genera of Vitaceae were sequenced for the trnL-F spacer, 37 of which were subsequently sequenced for the atpB-rbcL spacer and the rps16 intron. Phylogenetic analysis of the combined data provided a fairly robust phylogeny for Vitaceae. Cayratia, Tetrastigma, and Cyphostemma form a clade. Cyphostemma and Tetrastigma are each monophyletic, and Cayratia may be ...

Journal: :American journal of botany 2007
Guillermo C Amico Romina Vidal-Russell Daniel L Nickrent

Phylogenies can provide valuable information on biotic and abiotic factors associated with speciation. We examined species relationships in Tristerix (Loranthaceae), a genus of 11 species with an Andean distribution from Colombia to Chile. A previous classification divided Tristerix into subgenera Tristerix (two species) and Metastachys (nine species). We tested this classification by generatin...

Journal: :American journal of botany 2002
Sasa Stefanovic Lori Krueger Richard G Olmstead

Convolvulaceae, a large family of worldwide distribution, exhibit a rich diversity of morphological characteristics and ecological habitats. Previous efforts to systematize this diversity without a cladistic phylogenetic framework have disagreed on the circumscription of the family as well as tribal composition and relationship. In order to circumscribe the family and assess the relationships a...

Journal: :Systematic biology 2006
Mark P Simmons Li-Bing Zhang Colleen T Webb Aaron Reeves

Greater phylogenetic signal is often found in parsimony-based analyses of third codon positions of protein-coding genes relative to their corresponding first and second codon positions, even for early-derived ("basal") clades. We used the Soltis et al. (2000; Bot. J. Linn. Soc. 133:381-461) data matrix of atpB and rbcL from 567 seed plants to quantify how each of six factors (observed character...

2016
Xubing Liu Minxia Liang Rampal S. Etienne Gregory S. Gilbert Shixiao Yu

Recent studies have detected phylogenetic signals in pathogen-host networks for both soil-borne and leaf-infecting fungi, suggesting that pathogenic fungi may track or coevolve with their preferred hosts. However, a phylogenetically concordant relationship between multiple hosts and multiple fungi in has rarely been investigated. Using next-generation high-throughput DNA sequencing techniques, ...

Journal: :Molecular microbiology 2004
Erh-Min Lai Usha Nair Nikhil D Phadke Janine R Maddock

Bacteria show asymmetric subcellular distribution of many proteins involved in diverse cellular processes such as chemotaxis, motility, actin polymerization, chromosome partitioning and cell division. In many cases, the specific subcellular localization of these proteins is critical for proper regulation and function. Although cellular organization of the bacterial cell clearly plays an importa...

2016
P. P. Shajitha N. R. Dhanesh P. J. Ebin Joseph Laly Devassy Aneesha John Reshma Jomy Augustine Mathew Linu

Only a few Impatiens spp. from South India (one of the five centers of diversity for Impatiens species) were included in the published datum of molecular phylogeny of the family Balsaminaceae. The present investigation is a novel attempt to reveal the phylogenetic association of Impatiens species of South India, by placing them in the global phylogeny of Impatiens based on a combined analysis o...

Journal: :Molecular phylogenetics and evolution 2005
Niklas Wikström Kathleen M Pryer

Using DNA sequence data from multiple genes (often from more than one genome compartment) to reconstruct phylogenetic relationships has become routine. Augmenting this approach with genomic structural characters (e.g., intron gain and loss, changes in gene order) as these data become available from comparative studies already has provided critical insight into some long-standing questions about...

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