Skip to main content
Article thumbnail
Location of Repository

Studies on association of arbuscular mycorrhizal fungi with gluconacetobacter diazotrophicus and its effect on improvement of sorghum bicolor (L.)

By Karrupagnaniar Santhaguru Int J Cur Sci Res. Murugan Meenakshisundaram

Abstract

Considerable attention has been paid on endophytic diazotrophs in recent times, because of its of ability to fix and transfer fixed nitrogen to the host plant. Arbuscular mycorrhizal (AM) fungi are ubiquitous and play a significant role in improving the growth of plants through better uptake of nutrients, especially phosphorus. Interaction between AM fungi and nitrogen fixing bacteria and its impact on the host plant has been studied in several instances. In the present study, an attempt has been made to know the combining ability of G.diazotrophicus with AM fungi on S.bicolor. Spores of ten species of AM fungi were isolated from the rhizosphere soils of S.bicolor from different localities of Madurai and Sivagangai districts of Tamil Nadu. G.diazotrophicus was isolated from stem tissues of sugarcane (Saccharrum officinarum L.) from Madurai districts. The AM fungi in association with G.diazotrophicus were evaluated on the basis of root colonization, fresh and drymatter yield, N, P, soluble sugars and photosynthetic pigments in leaves of S.bicolor. Fresh weight and dry weight was significantly higher in dual inoculated plants. The highest values were recorded with Glomus fasciculatum + G.diazotrophicus combination. AM fungal infection was significantly higher in dual inoculated plants. N concentration was significantly increased by G.diazotrophicus even more in association with the efficient fungal strains. Dual inoculated plants showed a significant increase in P, soluble sugars, photosynthetic pigments in leaves was observed in G.diazotrophicus + Glomus fasciculatum combination. Such morphological modification may enhance water and nutrient uptake. Our results confirm the importance of studying plant-microbial interrelationship to provide useful information for agricultural system management

Topics: JOURNALS
Publisher: CurrentSciDirect Publications
Year: 2011
OAI identifier: oai:cogprints.org:7304
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://cogprints.org/7304/1/St... (external link)
  • http://cogprints.org/7304/ (external link)
  • Suggested articles

    Citations

    1. (1988). A new acid-tolerant nitrogen fixing bacterium associated with sugarcane. Plant Soil.
    2. (1992). Biological nitrogen in non-leguminous field crops: Recent advances. Plant Soil.
    3. (1997). Coffea Arabica L., a new host plant for Acetobacter diazotrophicus and isolation of other nitrogen fixing Acetobacteria. Env.Microbiol.
    4. (1949). Copper enzymes in isolated chloroplasts polyphenol oxidases in Beta vulgaris. Plant physiology.
    5. (2003). Crop-specific endophytic colonization by a novel, salttolerant, Nitrogen fixing and phosphate –solubilizing Gluconacetobacter sp. From wild rice.
    6. (1989). Fondamenti di Agronomia Generale. Edegricole.
    7. (1998). Genetic analysis of nitrogen fixation and plant-growth stimulating properties of Acetobacter diazotrophicus, an endophyte of sugarcane. In: Nitrogen fixation in bacteria: Molecular cell biology.
    8. (1978). Growth of subterranean clover in relation to the formation of endomycorrhizas by introduced and indigenous fungi in a field soil. New Phytol .
    9. (1997). Infection of sugarcane and other graminaceous plants by endophytic diazotrophs.
    10. (1999). Isolation and characterization of two genetically distant groups of Acetobacter diazotrophicus from a new host plant Eleusine corocana
    11. (1980). Measurement of nitrogen fixation by direct means. In: Methods for evaluating nitrogen fixation.
    12. (1955). Multiple range and multiple f-tests. Biometrics.
    13. (1992). Mycorrhizae: a possible explanation for yield decline associated with continues cropping.
    14. (1996). Mycorrhizal research – a priority in Agriculture.
    15. (1983). Mycorrhizal symbiosis.
    16. (2000). Natural endophytic occurrence of Acetobacter diazotrophicus in pineapple plants.
    17. (1959). Phosphorus assay in column chromatography.
    18. (1987). Physiological studies of Saccharobacter nitrocaptans a new acid tolerant nitrogen fixing bacteria.4th international symposium on nitrogen fixation with non legumes, Rio de, Janeiro, Final program abstract,
    19. (1948). Quantitative determination of carbohydrate with dry wood anthrone reagent.
    20. (1950). The water-culture method for growing plants without soil. California Agricultural Experimental station circular
    21. (1987). Use of mycorrhizae in agriculture.
    22. (1991). Vesicular-arbuscular mycorrhiza management in tropical agro ecosystems. Technical co operation, Federal Rebublic of Germany,

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.