Associative and endophytic nitrogen fixing bacteria and cyanobacterial associations
[...]... genes and of the factors controlling the interaction with the host plant, both for nitrogen- fixing heterotrophs and for cyanobacteria Following the identification of nitrogen- fixing endophytes for the major cereal crops and the demonstration that some ecosystems benefit from nitrogen fixation, e.g., sugar cane, rice, and maize, it appears that 16 ELMERICH research into associative and endophytic nitrogen. .. positive gain not only with legumes, but also with wheat, rye, and watercress To kill the controversy, Ville performed new experiments under the control of a committee mandated by the French Academy (Dumas et al., 1855) Although this committee 1 C Elmerich and W E Newton (eds.), Associative and Endophytic Nitrogen- fixing Bacteria and Cyanobacterial Associations, 120 â 2007 Springer ELMERICH 2 confirmed that... 2004 PREFACE Associative and Endophytic Nitrogen- fixing Bacteria and Cyanobacterial Associations This book is part of the seven-volume series that was launched a few years ago with the ambitious objectives of reviewing the field of nitrogen fixation from its earliest beginnings through the millennium change and of consolidating the relevant information - from fundamental to agricultural and environmental... Thus, soil nitrogen- fixing bacteria that can be found in close association with the root of grasses are usually designated as "associative nitrogen- fixing bacteria" Due to their growth-promoting effect, they are also referred to as nitrogen- fixing PGPR 3.1 Evidence for Nitrogen Fixation in non-Legume Cropping Systems Early evidence for non-symbiotic nitrogen fixation (reviewed by van Berkum and Bohlool,... Spirillum, and various photosynthetic bacteria and cyanobacteria (Stewart, 1969) Interestingly, Spirillum (Azospirillum) received little attention until the early 1970's (Dửbereiner and Day, 1976) In fact, for more than 50 years after their initial discovery, Azotobacter and Clostridium were regarded as the only genera of bacteria capable of fixing nitrogen in the free-living state and Nostoc as the only nitrogen- fixing. .. colonize the rhizosphere Rhizobacteria with beneficial effects on plant development (involving growth stimulation or disease prevention/suppression) are referred to as plant growth-promoting rhizobacteria or PGPR (Kloepper and Beauchamp, 1992; Kloepper, 1994) 8 ELMERICH 3 ASSOCIATIVE NITROGEN- FIXING BACTERIA The terms "associative symbiosis", "rhizocoenoses", and "associative nitrogen fixation" have all... Regulation of Nitrogen Fixation in Free-living Bacteria, and Volume 3, Genomes and Genomics of Nitrogen- fixing Organisms Because differentiation of the non-N2 -fixing vegetative cells into N2 -fixing heterocysts is crucial for a successful cyanobacterial symbiosis, Chapter 11 summarizes current knowledge of the physiology and genetics of filamentous cyanobacteria, emphasizing the differentiation process... sugarcane-cropping systems and focuses on the diversity of N2 -fixing bacteria associated with sugarcane It emphasizes the modes of endophytic colonization and the molecular biology of both G diazotrophicus and H seropedicae Cyanobacteria coverage is limited to two chapters, but additional information on the physiology, genetics, and genomics of cyanobacteria is given in Volume 2, Genetics and Regulation of Nitrogen. .. diversity of plants (van Berkum and Bohlool, 1980) Seven species are known (Chapter 2) and many aspects of their physiology and genetics have been reviewed (Eskew et al, 1977; van Berkum and Bohlool, 1980; Patriquin et al., 1983; Dửbereiner and Pedrosa, 1987; Elmerich et al., 1992; 1997; Okon, 1994; 1985; Bashan and Levanony, 1990; Costacurta and Vanderleyden, 1995; Steenhoudt and Vanderleyden, 2000), including... increasing soil fertility and providing plants with nutrients began some 80 years ago It took about 50 years before it was recognized (Dửbereiner and Day, 1976) and accepted (Okon and Labandera-Gonzales, 1994) that the association of nitrogen- fixing bacteria with graminaceous plants was beneficial Indeed, it is still argued that nitrogen fixation has little to do with plant-growth promotion and that phytohormone . Fixation: Origins, Applications, and Research Progress VOLUME 5 Associative and Endophytic Nitrogen-fixing Bacteria and Cyanobacterial Associations Edited by Claudine.