A Study Of The Symbiotic Relationship Between Frankia And The Genus Ceanothus
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A Study Of The Symbiotic Relationship Between Frankia And The Genus Ceanothus
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Author : Dadbeh Rouhbakhsh
language : en
Publisher:
Release Date : 1991
A Study Of The Symbiotic Relationship Between Frankia And The Genus Ceanothus written by Dadbeh Rouhbakhsh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Ceanothus categories.
Evolution And Ecology Of The Ceanothus Frankia Symbiosis
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Author : Soon-Chun Jeong
language : en
Publisher:
Release Date : 1997
Evolution And Ecology Of The Ceanothus Frankia Symbiosis written by Soon-Chun Jeong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Actinorhizas categories.
The evolutionary relationship between Frankia and actinorhizal plants was evaluated by reconstructing molecular phylogenetic trees from nifH, 16S rDNA, and rbcL nucleotide sequences. Subgroupings in Frankia phylogenetic trees reconstructed from nifH and from 16S rDNA sequences were consistent in terms of plant origins of Frankia strains. Although the branching order of Frankia 16S rDNA and plant rbcL trees were different, subgroupings of Frankia and of plants correlated well in terms of symbiotic partnership. Tree matching, estimated divergence times, and molecular clock hypothesis tests indicated that Frankia clades diverged more recently than plant clades and that actinorhizal symbioses originated more than three times after the plant clades diverged. A phylogenetic tree of Ceanothus species, which are symbiotic partners of Frankia, was reconstructed using ndhF gene sequences. The analysis identified two main clades corresponding to two subgenera: Ceanothus and Cerastes. The analysis also suggested that three monophyletic clades within the subgenus ceanothus can be delimited on the basis of vegetative characters. Based on rbcL sequences, the two subgenera diverged 18-39 million years ago whereas species within each subgenus diverged more recently. These results support the current division of Ceanothus into two monophyletic subgenera and agree with the postulated recent divergence of many species within each subgenus. Specificity between Ceanothus species and their Frankia microsymbionts was evaluated by analysis of DNA in nodules collected from three copopulations of Ceanothus species. Sequencing of the intergenic spacer region between 16S and 23S rRNA genes suggested that Ceanothus-microsymbiont Frankia are closely related. Nodules were further analyzed by genomic fingerprinting using repetitive sequences and PCR (rep-PCR). A newly designed, direct repeat sequence and a BOX sequence showed that Ceanothus-microsymbiont Frankia exhibited less diversity within each copopulation than among copopulations. Furthermore, geographic separation was a more important factor for divergence of Ceanothus-microsymbiont Frankia than host plant. The population of Ceanothus-infective Frankia in soils under stands of Ceanothus velutinus and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), a non-host plant, were compared. The population sizes were measured using plant bioassay methods with C. velutinus, C. sanguineus, and C. integerrimus as trap plants. Population size in soil under C. velutinus was about 10 times higher than that under the Douglas-fir. Nodulation capacities of the three trap plants were not significantly different. The diversity of Frankia nodulating trap plants was examined using rep-PCR. Results suggested that infective Frankia is not species-specific with regard to the three Ceanothus species used as trap plants and that although the degree of diversity was similar in both soils, the two populations consisted of different Frankia.
The Biology Of Frankia And Actinorhizal Plants
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Author : Christa R. Schwintzer
language : en
Publisher: Elsevier
Release Date : 2012-12-02
The Biology Of Frankia And Actinorhizal Plants written by Christa R. Schwintzer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Nature categories.
The Biology of Frankia and Actinorhizal Plants provides a comprehensive review of Frankia and the actinorhizal plants. It reviews the state of knowledge on all aspects from molecular genetics through ecology to practical applications; describes methods used in research and practical applications; and is a guide to the literature. The book begins with overviews of Frankia and the actinorhizal plants, and developments in the field prior to the first confirmed isolation of Frankia. Next is a series of authoritative chapters on the biology of Frankia, the symbiosis, and actinorhizal plants. Although methods used in research and in practical applications are included throughout the book, they are given special emphasis in the middle section. The final section of the book concerns the ecology and current and potential uses of actinorhizal plants in both the temperate regions and the tropics. This work is intended as a reference text and handbook of methods for a wide audience including established workers and students of Frankia and actinorhizal plants, specialists and students in other areas of nitrogen fixation (including the Rhizobium-legume symbiosis), soil microbiologists, plant physiologists, ecologists, general biologists, foresters, specialists in land reclamation, and managers requiring an authoritative overview of this rapidly developing field.
Nitrogen Fixing Actinorhizal Symbioses
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Author : Katharina Pawlowski
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-10-06
Nitrogen Fixing Actinorhizal Symbioses written by Katharina Pawlowski and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-10-06 with Science categories.
For researchers and graduates with any interest in plant or soil sciences, this fascinating study will be a godsend – it’s the complete state of the art with regard to actinorhizal symbioses. The self-contained sixth volume of a comprehensive series on nitrogen fixation, it includes chapters that deal with all aspects of this symbiosis between actinorhizal plants and nitrogen-fixing bacteria. It also contains information both about symbionts and their ecological role and use. Other chapters tackle the global distribution of different actinorhizal plants and their microsymbionts and how this impacts the question of co-evolution of the micro- and macrosymbionts as well as comparing the actinorhizal and leguminous symbioses. No other book provides the up-to-date and in-depth coverage of this volume.
Frankia Symbiosis
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Author : P. Normand
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Frankia Symbiosis written by P. Normand and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.
The 12th meeting on Frankia and Actinorhizal Plants that took place in Carry-le-Rouet, France in June 2001 was the opportunity for scientists to communicate about latest developments on this symbiosis that concerns a wide range of dicotyledonous plants, initiates ecological successions and is used in a number of countries to protect crops from winds or improve soil status. Selected papers on plant ecology, Frankia's genetics or physiology, and host plants' genetics or physiology are published in this special Plant & Soil issue.
Canadian Journal Of Botany
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Author :
language : en
Publisher:
Release Date : 2004
Canadian Journal Of Botany written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Botany categories.
Applied And Environmental Microbiology
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Author :
language : en
Publisher:
Release Date : 1999
Applied And Environmental Microbiology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Microbial ecology categories.
Genomic And Proteomic Analyses Of Extracellular And Symbiosis Related Proteins In Frankia
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Author : Juliana Emily Mastronunzio
language : en
Publisher:
Release Date : 2009
Genomic And Proteomic Analyses Of Extracellular And Symbiosis Related Proteins In Frankia written by Juliana Emily Mastronunzio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Frankia And Actinorhizal Plants
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Author : M. Lalonde
language : en
Publisher: Springer Science & Business Media
Release Date : 1985-09-30
Frankia And Actinorhizal Plants written by M. Lalonde and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985-09-30 with Nature categories.
Proceedings of the International Symposium on Frankia and Actinorhizal Plants, held in Montmorency Forest, Laval University, Quebec, Canada on August 5-9, 1984
Nitrogen Fixation With Non Legumes
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Author : K.A. Malik
language : en
Publisher: Springer
Release Date : 2012-10-13
Nitrogen Fixation With Non Legumes written by K.A. Malik and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-13 with Science categories.
Diazotrophic bacteria convert atmospheric nitrogen to plant-useable form and this input of nitrogen through biological fixation is of great agronomic importance. The contributions presented in this volume relate to free-living nitrogen fixers and the diazotrophs associated with plants. Symbiotic association of Frankia with non-legumes and cyanobacterial associations are also discussed. Research topics covered in this volume include the biochemistry and genetics of diazotrophs, recent developments in improvement of plant-microbe interactions and their molecular basis, the use of molecular probes in taxonomy and ecology of diazotrophs and reports on field applications, agronomic importance and improvement in methodologies for assessing their contribution to plants. This book provides valuable information not only for researchers working in the field of biological nitrogen fixation but also for biochemistry, molecular biologists, microbiologists and agronomists.