نتایج جستجو برای: matk

تعداد نتایج: 709  

Journal: :American journal of botany 2005
Ya-Long Guo Song Ge

The phylogeny and evolutionary history of the rice tribe (Oryzeae) were explored using sequences of five DNA fragments (matK, trnL, nad1, Adh2, and GPA1) from chloroplast, mitochondrial, and nuclear genomes. Results indicate that (1) Oryzeae is monophyletic and falls into two main clades corresponding to the traditionally recognized subtribes; (2) previous recognition of three monotypic genera ...

Journal: :American journal of botany 2004
Martin F Wojciechowski Matt Lavin Michael J Sanderson

Phylogenetic analysis of 330 plastid matK gene sequences, representing 235 genera from 37 of 39 tribes, and four outgroup taxa from eurosids I supports many well-resolved subclades within the Leguminosae. These results are generally consistent with those derived from other plastid sequence data (rbcL and trnL), but show greater resolution and clade support overall. In particular, the monophyly ...

2012
Xiaohui Pang Chang Liu Linchun Shi Rui Liu Dong Liang Huan Li Stacey S. Cherny Shilin Chen

BACKGROUND The trnH-psbA intergenic spacer region has been used in many DNA barcoding studies. However, a comprehensive evaluation with rigorous sequence preprocessing and statistical testing on the utility of trnH-psbA and its combinations as DNA barcodes is lacking. METHODOLOGY/PRINCIPAL FINDINGS Sequences were searched from GenBank for a meta-analysis on the usefulness of trnH-psbA and its...

Journal: :Molecular phylogenetics and evolution 2016
Andrew G Gardner Emily B Sessa Pryce Michener Eden Johnson Kelly A Shepherd Dianella G Howarth Rachel S Jabaily

Though considerable progress has been made in inferring phylogenetic relationships of many plant lineages, deep unresolved nodes remain a common problem that can impact downstream efforts, including taxonomic decision-making and character reconstruction. The Core Goodeniaceae is a group affected by this issue: data from the plastid regions trnL-trnF and matK have been insufficient to generate a...

Journal: :American journal of botany 2000
J M Hu M Lavin M F Wojciechowski M J Sanderson

Phylogenetic relationships in the tribe Millettieae and allies in the subfamily Papilionoideae (Leguminosae) were reconstructed from chloroplast trnK/matK sequences. Sixty-two accessions representing 57 traditionally recognized genera of Papilionoideae were sampled, including 27 samples from Millettieae. Phylogenies were constructed using maximum parsimony and are well resolved and supported by...

Journal: :Annals of botany 2009
Cássio van den Berg Wesley E Higgins Robert L Dressler W Mark Whitten Miguel A Soto-Arenas Mark W Chase

BACKGROUND AND AIMS Laeliinae are a neotropical orchid subtribe with approx. 1500 species in 50 genera. In this study, an attempt is made to assess generic alliances based on molecular phylogenetic analysis of DNA sequence data. METHODS Six DNA datasets were gathered: plastid trnL intron, trnL-F spacer, matK gene and trnK introns upstream and dowstream from matK and nuclear ITS rDNA. Data wer...

2009
Mailyn Adriana Gonzalez Christopher Baraloto Julien Engel Scott A. Mori Pascal Pétronelli Bernard Riéra Aurélien Roger Christophe Thébaud Jérôme Chave

BACKGROUND Large-scale plant diversity inventories are critical to develop informed conservation strategies. However, the workload required for classic taxonomic surveys remains high and is particularly problematic for megadiverse tropical forests. METHODOLOGY/PRINCIPAL FINDINGS Based on a comprehensive census of all trees in two hectares of a tropical forest in French Guiana, we examined whe...

2017
Fan Wu Jinxing Ma Yuqin Meng Daiyu Zhang Blaise Pascal Muvunyi Kai Luo Hongyan Di Wenli Guo Yanrong Wang Baochang Feng Jiyu Zhang

Melilotus, an annual or biennial herb, belongs to the tribe Trifolieae (Leguminosae) and consists of 19 species. As an important green manure crop, diverse Melilotus species have different values as feed and medicine. To identify different Melilotus species, we examined the efficiency of five candidate regions as barcodes, including the internal transcribed spacer (ITS) and two chloroplast loci...

Journal: :American journal of botany 2018
Michael Song Li-Yaung Kuo Layne Huiet Kathleen M Pryer Carl J Rothfels Fay-Wei Li

PREMISE OF THE STUDY Gene space in plant plastid genomes is well characterized and annotated, yet we discovered an unrecognized open reading frame (ORF) in the fern lineage that is conserved across flagellate plants. METHODS We initially detected a putative uncharacterized ORF by the existence of a highly conserved region between rps16 and matK in a series of matK alignments of leptosporangia...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم پایه 1392

در این پژوهش، نواحی dna ریبوزوم هسته¬ای، (ناحیه nrdna its) در گونه leonurus cardiaca از تیره lamiaceae توالی یابی شد. برای یافتن رابطه خویشاوندی بین گونه¬ی مذکور و سایر گونه¬های جنس leonurus، توالی ناحیه nrdna its، شش گونه دیگر این جنس از سایت ncbi اخذ و با استفاده از روش¬های maximum likelihood و maximum parsimony آنالیز گردید. شش گونه مورد استفاده از جنس leonurus بنام¬هایleonurus chaituroides,...

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