نتایج جستجو برای: trnd atpb

تعداد نتایج: 257  

Journal: :American journal of botany 2004
Charles C Davis Mark W Chase

Phylogenetic data from plastid (ndhF and rbcL) and nuclear (PHYC) genes indicate that, within the order Malpighiales, Elatinaceae are strongly supported as sister to Malpighiaceae. There are several putative morphological synapomorphies for this clade; most notably, they both have a base chromosome number of X = 6 (or some multiple of three or six), opposite or whorled leaves with stipules, uni...

2013
Michael J. Bayly Gareth D. Holmes Paul I. Forster David J. Cantrill Pauline Y. Ladiges

BACKGROUND Rutaceae subfamily Rutoideae (46 genera, c. 660 species) is diverse in both rainforests and sclerophyll vegetation of Australasia. Australia and New Caledonia are centres of endemism with a number of genera and species distributed disjunctly between the two regions. Our aim was to generate a high-level molecular phylogeny for the Australasian Rutoideae and identify major clades as a ...

Journal: :Systematic biology 2002
Vincent Savolainen Mark W Chase Nicolas Salamin Douglas E Soltis Pamela S Soltis Andrés J López Olivier Fédrigo Gavin J P Naylor

VINCENT SAVOLAINEN,1 MARK W. CHASE,1 NICOLAS SALAMIN,2 DOUGLAS E. SOLTIS,3 PAMELA S. SOLTIS ,4 ANDRÉS J. LÓPEZ,5 OLIVIER FÉDRIGO,5 AND GAVIN J. P. NAYLOR5 Molecular Systematics Section, Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, TW9 3DS, U.K.; E-mail: [email protected] (V.S.), [email protected] (M.W.C.) Department of Botany, Trinity College, Dublin 2, Ireland; E-mail: salaminn@t...

2017
Zhanying Zhang Jinjie Li Yinghua Pan Jilong Li Lei Zhou Hongli Shi Yawen Zeng Haifeng Guo Shuming Yang Weiwei Zheng Jianping Yu Xingming Sun Gangling Li Yanglin Ding Liang Ma Shiquan Shen Luyuan Dai Hongliang Zhang Shuhua Yang Yan Guo Zichao Li

Low temperature is a major factor limiting rice productivity and geographical distribution. Improved cold tolerance and expanded cultivation to high-altitude or high-latitude regions would help meet growing rice demand. Here we explored a QTL for cold tolerance and cloned the gene, CTB4a (cold tolerance at booting stage), encoding a conserved leucine-rich repeat receptor-like kinase. We show th...

2007
Jordan S. Metzgar Harald Schneider Kathleen M. Pryer

A phylogeny for all extant species of the heterosporous fern genus Azolla is presented here based on more than 5000 base pairs of DNA sequence data from six plastid loci (rbcL, atpB, rps4, trnL-trnF, trnG-trnR, and rps4-trnS). Our results are in agreement with other recent molecular phylogenetic hypotheses that support the monophyly of sections Azolla and Rhizosperma and the proposed relationsh...

Journal: :Molecular phylogenetics and evolution 2006
Petra Korall Kathleen M Pryer Jordan S Metzgar Harald Schneider David S Conant

Tree ferns are a well-established clade within leptosporangiate ferns. Most of the 600 species (in seven families and 13 genera) are arborescent, but considerable morphological variability exists, spanning the giant scaly tree ferns (Cyatheaceae), the low, erect plants (Plagiogyriaceae), and the diminutive endemics of the Guayana Highlands (Hymenophyllopsidaceae). In this study, we investigate ...

2016
Craig M. Costion W. John Kress Darren M. Crayn

The taxonomic status of a single island, narrow range endemic plant species from Palau, Micronesia (Timonius salsedoi) was assessed using DNA barcode markers, additional plastid loci, and morphology in order to verify its conservation status. DNA barcode loci distinguished T. salsedoi from all other Timonius species sampled from Palau, and were supported by sequence data from the atpB-rbcL inte...

Journal: :Molecular phylogenetics and evolution 2006
Livia Wanntorp Alexander Kocyan Susanne S Renner

Hoya (Marsdenieae, Apocynaceae) includes at least 200 species distributed from India to the Pacific Islands. We here infer major species groups in the genus based on combined sequences from the chloroplast atpB-rbcL spacer, the trnL region, and nuclear ribosomal DNA ITS region for 42 taxa of Hoya and close relatives. To assess levels of ITS polymorphism, ITS sequences for a third of the accessi...

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