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2 edition of Characterization, ecology, and physiology of the cowpea Rhizobium found in the catalog.

Characterization, ecology, and physiology of the cowpea Rhizobium

Robert Michael Zablotowicz

Characterization, ecology, and physiology of the cowpea Rhizobium

by Robert Michael Zablotowicz

  • 118 Want to read
  • 12 Currently reading

Published .
Written in English

    Subjects:
  • University of California, Riverside. -- Dept. of Earth Sciences -- Dissertations.,
  • Rhizobium.,
  • Cowpea.,
  • Nitrogen -- Fixation.

  • Edition Notes

    Statementby Robert Michael Zablotowicz.
    The Physical Object
    Paginationxi, 126 leaves :
    Number of Pages126
    ID Numbers
    Open LibraryOL15566702M

    Phage community ecology is complicated by the continuous co-evolution of bacteria with their phage predators. In addition, phage play important roles in the horizontal transfer of DNA between bacteria (e.g., 41). (iv) Phage ecosystem ecology considers the phage impact on energy flow and nutrient cycling within ecosystems. Phage, for example. 2. REVIEW OF LITERATURE Rhizobia Rhizobia are a genetically diverse and physiologically heterogenous group of bacteria (Somasegaran and Hoben, ) and they are able to elicit nodule formation on legumes are called rhizobia (Denarie et al., ). Rhizobia comprises of .

    Characterization of Rhizobium Growth Calculated doubling times were used to predict when cells are at mid-log growth, the phase where cells are healthy and replicating. Cell growth is sinosoidal and it occurs in phases: in the lag phase, cells adapt to growth conditions and mature; in the log phase,File Size: KB.   Access to mineral nitrogen often limits plant growth, and so symbiotic relationships have evolved between plants and a variety of nitrogen-fixing organisms. These associations are responsible for.

      Deformation and curling of axillary hairs upon inoculation occurs in Arachis and Stylosanthes [29, 30], but root hair curling is not a prerequisite of infection and nodulation. Bradyrhizobium cells were even seen to be entrapped within ‘shepherd’s crooks’ (which are always observed with the infection thread mode), but penetration of the root hair by bradyrhizobia in the crook Cited by: INTRODUCTION. Faba bean (Vicia faba L.) is one of the most ancient food crops and originated in the Near East and quickly spread to Europe, North Africa, along the Nile to is one of the main pulse crops grown for dry seeds and green pods for consumption, or for animal feeding in developed countries (Telaye et al., ).It also serves as an important source of protein in the human.


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Characterization, ecology, and physiology of the cowpea Rhizobium by Robert Michael Zablotowicz Download PDF EPUB FB2

Abstract. One fast-growing and three slow-growing strains of Rhizobium (isolated from cowpeas) were evaluated for symbiotic performance on Vigna unguiculata (L.) Walp. ecology California no.

5 blackeyes. Plants inoculated with slow-growing strains A22, A30, and A32 developed a maximum acetylene reduction activity of, and 32 μmol of ethylene formed per plant per h Cited by: Suggested Citation:"Physiology of the Symbiosis between Rhizobium and Leguminous Plants."National Research Council.

Biology and Ecology of Nitrogen: Proceedings of a gton, DC: The National Academies Press. doi: / Isolation and Characterization of Rhizobia from Rhizospher and Root Nodule of Cowpea, Elephant and Lab Lab Plants Article (PDF Available) June with 7, Reads How we measure 'reads'.

Genotypic Characterization of Indigenous Rhizobium Strain from Cultivated Cowpea (Vigna unguiculata L.) in Bangladesh Ali Mohammad Nushair, Ananda Kumar Saha, Md. Anisur Rahman, Moni Krishno Mohanta* and Md. Fazlul Haque Genetics and Molecular Biology Laboratory, Department of Zoology, University of Rajshahi, Rajshahi, Bangladesh.

The present book will guide researchers by providing reviewed research findings from renowned laboratories related to microbe-mediated plant stress management under one roof. This book. A cowpea rhizobiophage (JRW 3 phage) from Jamaican soil was isolated and characterized.

The phage has a polyhedral head and a non-contractile tail; maximum adsorption of the phage to the host occurred after 5 min. A one-step growth experiment revealed that the latent period, rise period and burst size of JRW3 phage were 12 h, 16 h, and 28 plaque-forming units/cell, by: INTRODUCTION TO RHIZOBIA SUMMARY This module introduces the general role of microorganisms in the soil, and specifically the rhizobia.

Rhizobia are special bacteria that can live in the soil or in nodules formed on the roots of legumes. In root nodules, they form a symbiotic association with the legume. RHIZOBIUM GENES. The Rhizobium-legume symbiosis had attracted serious study ever since Beijerinck's demonstration that bacteria caused nodule formation (13).Considerable progress was made prior to in studying the biochemistry of nitrogen fixation itself.

The mechanism of nodule formation, however, was the subject of a great deal of speculation without much concrete. Symbiotically defective mutants of cowpea rhizobia strain IRC were isolated by random Tn5 mutagenesis and characterized.

One auxotroph (MS1) requir Cited by: 6. In soils of Cauto River Valley (Granma, Cuba) affected by salts, six new bacteria isolated from nodules of Vigna unguiculata (L.) Walp were obtained. The six isolates were subjected to differents salt levels (0,6 dS m-1 of NaCl), pH levels (4,) and temperatures (°C) with the objective to determine their tolerance to these abiotic : E.

Gómez Padilla, B. Ruiz-Díez, S. Fajardo, B. Eichler-Loebermann, R. Samson, P. van Damme, R. López. History. The first known species of rhizobia, Rhizobium leguminosarum, was identified inand all further species were initially placed in the Rhizobium research has been done on crop and forage legumes such as clover, alfalfa, beans, peas, and soybeans; more research is being done on North American legumes.

[citation needed]. ABSTRACT. The biodiversity of rhizobium in soils of the São Francisco Valley is unknown and can be studied using cowpea as trap plants.

The objective of this study was to verify the diversity of diazotrophic bacteria that nodulate cowpea in soils of the lower half of the São Francisco River Valley by morphological and genotypic characterization.

Flavonoids are perceived as aglycones, which induce rhizobialnod genes by interacting with the gene product ofnodD, a LysR-type interaction results in a conformational change in the NodD protein such that it binds tonod box elements in the promoters of the nodgenes (see Perret et al., ).The concerted expression of these genes leads to the synthesis of Nod factor molecules.

Rhizobium. strain from the roots of groundnut bacterial species. These findings corroborate with the results of Singh. et al. [26], and Erum and Bano [27] who also reported these sugar tests positive during isolation and characterization of.

Rhizobium meliloti. on most of leguminous plant roots. Table 1:File Size: KB. Phenotypic and genotypic characteristics of cowpea rhizobia indigenous to soils of Ethiopia are unknown. Forty indigenous cowpea rhizobial isolates were collected from cowpea-growing areas of the country and were characterized for their growth and genetic properties.

Based on their cultural characteristics, the isolates were categorized into fast (FG), slow (SG), and extraslow-growings (ESG).Author: Girmaye Kenasa, Fassil Assefa, Mussie Y. Habteselassie. Rhizobia from the Sinorhizobium and Rhizobium genera are not so common in the cowpea cross inoculation group.

The detection of these two isolates from the root nodules of Vigna sp. in this study is in accordance with a previous work which revealed the occurrence of fast growing Sinorhizobium fredi and Rhizobium leguminosarum in the nodules of V.

The increasing interest in the use of rhizobia as biofertilizers in smallholder agricultural farming systems of the Sub-Saharan Africa has prompted the identification of a large number of tropical rhizobia strains and led to studies on their diversity.

Inoculants containing diverse strains of rhizobia have been developed for use as biofertilizers to promote soil fertility and symbiotic Cited by: 8. Effect of Cowpea Golden Mosaic Virus infection on Rhizobium in nodules of cowpea (Vigna unguiculata) Shail Pande.

Department of Botany, Mahatma Gandhi Post Graduate College, Gorakhpur, U.P. India. Abstract. Cowpea is an important leguminous crop cultivated in all part of India and worldwide for green pods as vegetable, seeds as pulse. This test is essential to differentiate Rhizobium and Agrobacterium.

Other biochemical tests confirmed that isolated strains were Rhizobium leguminosarum. All Rhizobium strains tolerated 1% NaCl but only 16% Rhizobium strains tolerated 2% NaCl. Table 1. Biochemical characterization of Rhizobium leguminosarum isolated from Pea Size: KB.

Symbiotic and Phenotypic Characteristics of Rhizobia Nodulaing Cowpea (Vigna Unguiculata L. Walp) Grown in Arid Region of Libya (Fezzan) culture of each test isolate and incubated at 28 °C for 10 days.

When color change to blue around, the colonies was considered as alkaline production. Symbiotic Traits and Effectiveness. temperature etc.) than Rhizobium from cultivated legumes (Zahran et al., ).

The Present study investigated isolation and characterization of Rhizobium species from pea plant (Pisum sativum) root nodules and its antibiotic resistance and antibacterial activity against isolated bacteria.

II. MATERIAL AND METHODS COLLECTION OF SAMPLESFile Size: KB.cowpea, confirming that they belong to the rhizobium group. Despite some well-known limitations, morphological characterization may be an important tool for first approaching a rhizobium collection in relation to its diversity (2,22).

According to the cluster analysis performed, the majority of the isolates. Abstract. Millettia pinnata (Synonym Pongamia pinnata) is a viable source of oil for the mushrooming biofuel industry, source for agroforestry, urban landscaping, and the bio-amelioration of degraded also helps in maintaining soil fertility through symbiotic nitrogen fixation.

However, not much work is reported on classification and characterization of the rhizobia associated with Cited by: