نتایج جستجو برای: rhizosphere ph

تعداد نتایج: 174097  

Journal: :Revista de biologia tropical 2014
Mehboob Ahmed Lucas J Stal Shahida Hasnain

The genus Leptolyngbya comprises filamentous cyanobacteria that are important in rice fields. In the rhizosphere, cyanobacteria produce a variety of secondary metabolites such as auxins that are important in agriculture soil performance. To assess this, Leptolyngbya strain MMG-1, was isolated from the rhizosphere of rice plants and described. For this, the morphology of this strain was studied ...

2017
Wayne Dawson Jens Hör Markus Egert Mark van Kleunen Michael Pester

Plant growth can be affected by soil bacteria. In turn, plants are known to influence soil bacteria through rhizodeposits and changes in abiotic conditions. We aimed to quantify the phylotype richness and relative abundance of rhizosphere bacteria that are actually influenced in a plant species-specific manner and to determine the role of the disproportionately large diversity of low-abundance ...

2011
Biao Zhu Weixin Cheng Elizabeth M. Baggs

Stable carbon isotopes are used extensively to partition total soil CO2 efflux into root-derived rhizosphere respiration or autotrophic respiration and soil-derived heterotrophic respiration. However, it remains unclear whether CO2 from rhizosphere respiration has the same δC value as root biomass. Here we investigated the magnitude of C isotope fractionation during rhizosphere respiration rela...

Journal: :Applied and environmental microbiology 2002
Gabriele Berg Nicolle Roskot Anette Steidle Leo Eberl Angela Zock Kornelia Smalla

To study the effect of plant species on the abundance and diversity of bacterial antagonists, the abundance, the phenotypic diversity, and the genotypic diversity of rhizobacteria isolated from potato, oilseed rape, and strawberry and from bulk soil which showed antagonistic activity towards the soilborne pathogen Verticillium dahliae Kleb. were analyzed. Rhizosphere and soil samples were taken...

2015
M. L. Lagos F. Maruyama P. Nannipieri M. L. Mora A. Ogram M. A. Jorquera

The rhizosphere (soil zone influenced by roots) is a complex environment that harbors diverse bacterial populations, which have an important role in biogeochemical cycling of organic matter and mineral nutrients. Nevertheless, our knowledge of the ecology and role of these bacteria in the rhizosphere is very limited, particularly regarding how indigenous bacteria are able to communicate, coloni...

Journal: :Environmental microbiology 2008
Luisa Pirone Alessandra Bragonzi Alessio Farcomeni Moira Paroni Cristina Auriche Massimo Conese Luigi Chiarini Claudia Dalmastri Annamaria Bevivino Fiorentina Ascenzioni

Given the widespread presence of Burkholderia cenocepacia in the rhizosphere it is important to determine whether rhizosphere strains are pathogenic for cystic fibrosis patients or not. Eighteen B. cenocepacia strains of rhizosphere and clinical origin were typed by multi-locus sequence typing (MLST) analysis and compared for their ability to invade pulmonary epithelial cells and their virulenc...

Journal: :Molecular plant-microbe interactions : MPMI 2015
Laura J White Karuppaiyan Jothibasu R Neil Reese Volker S Brözel Senthil Subramanian

High bacterial density and diversity near plant roots has been attributed to rhizodeposit compounds that serve as both energy sources and signal molecules. However, it is unclear if and how specific rhizodeposit compounds influence bacterial diversity. We silenced the biosynthesis of isoflavonoids, a major component of soybean rhizodeposits, using RNA interference in hairy-root composite plants...

2017
Lu Shi Nanshan Du Sheng Shu Jin Sun Shuzhan Li Shirong Guo

Paenibacillus polymyxa (P. polymyxa) NSY50, isolated from vinegar residue substrate, suppresses the growth of Fusarium oxysporum in the cucumber rhizosphere and protects the host plant from pathogen invasion. The aim of the present study was to evaluate the effects of NSY50 application on cucumber growth, soil properties and composition of the rhizospheric soil microbial community after exposur...

Journal: :Frontiers in forests and global change 2023

Objective Rhizosphere soil nutrients and bacterial diversity of four broad-leaved tree species underplanted in Chinese fir plantation with different stand density levels were analyzed to reveal characteristics the rhizosphere environment selection suitable species. Methods three (900, 1,200, 1,875 stems ha –1 , respectively) selected Michelia macclurei Schima superba Phoebe zhennan Tsoongiodend...

2014
Masahiro Yuki Kenshiro Oshima Wataru Suda Yumi Oshida Keiko Kitamura Toshiya Iida Masahira Hattori Moriya Ohkuma

Paenibacillus pini strain JCM 16418(T) is a cellulolytic bacterium isolated from the rhizosphere of pine trees. Here, we report the draft genome sequence of this strain. This genome information will be useful for studies of rhizosphere bacteria.

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