Association of non-heterocystous cyanobacteria with crop plants

@article{Ahmed2010AssociationON,
  title={Association of non-heterocystous cyanobacteria with crop plants},
  author={Mehboob Ahmed and Lucas J Stal and Shahida Hasnain},
  journal={Plant and Soil},
  year={2010},
  volume={336},
  pages={363-375}
}
Cyanobacteria have the ability to form associations with organisms from all domains of life, notably with plants, which they provide with fixed nitrogen, among other substances. This study was aimed at developing artificial associations between non-heterocystous cyanobacteria and selected crop plants. We isolated several non-heterocystous cyanobacteria from various rice fields. The cultures were tested for their capacity to produce the plant hormone indole-3-acetic acid (IAA), and the possible… 

Figures and Tables from this paper

Root Colonization and Phytostimulation by Phytohormones Producing Entophytic Nostoc sp. AH-12
TLDR
The study clearly demonstrated that Ck is a tool of endophytic Nostoc to colonize plant root and promote its growth as evident by low chlorophyll a concentration in the roots.
Potential of cyanobacteria for biorational management of plant parasitic nematodes: A review
TLDR
Screening of extracts or metabolites against plant parasitic nematodes is the initial step to determine the usefulness of cyanobacteria for nematode management, and a large scale screening programme is necessary for selection of strains with greater nematicidal potential.
Biofilm formation and indole-3-acetic acid production by two rhizospheric unicellular cyanobacteria.
TLDR
It is shown that the synthesis of IAA by Chroococcidiopsis sp.
Characterization of free-living cyanobacterial strains and their competence to colonize rice roots
TLDR
A 16S rRNA gene fragment-based denaturing gradient gel electrophoresis analysis revealed difference in the competence of individual strains to colonize rice roots exposed to individual or mixed population.
The morphology and bioactivity of the rice field cyanobacterium Leptolyngbya.
TLDR
The results showed that the strain required the precursor L-tryptophan for the synthesis of IAA, and the bioactivity of the secreted IAA was determined by its effect on the rooting pattern of Pisum sativum seedlings.
Effect of IAA on in vitro growth and colonization of Nostoc in plant roots
TLDR
It is suggested that ipdC and/or synthesized IAA of Nostoc OS-1 is required for its efficient root colonization and plant promoting activity.
New insights into the biodiversity and applications of cyanobacteria (blue-green algae)—Prospects and challenges
TLDR
This review provides an overview of the polyphasic approaches used in the analyses of cyanobacterial biodiversity and the potential of these organisms in providing viable solutions to global problems of food, energy and environmental degradation, which need further impetus through adoption of multidisciplinary collaborative programs.
DTAF: an efficient probe to study cyanobacterial-plant interaction using confocal laser scanning microscopy (CLSM)
TLDR
The easy protocol and absence of tissue processing make DTAF a useful probe for studies of cyanobacterial associations with plant roots by CLSM.
Prospecting cyanobacterial formulations as plant-growth-promoting agents for maize hybrids
TLDR
This is the first report on identification of promising cyanobacteria–maize genotype combinations as plant-growth-promoting and N-saving options for maize hybrids, and emphasise the significance of including cyanob bacteria formulations in integrated nutrient management practices for this fertiliser-intensive crop.
N 2 -Fixing Cyanobacterial Systems as Biofertilizer
TLDR
In this chapter, various N2-fixing cyanobacterial systems in light of their use as biofertilizers are reviewed.
...
1
2
3
...

References

SHOWING 1-10 OF 42 REFERENCES
Colonization of roots of rice (Oryza sativa) by symbiotic Nostoc strains.
TLDR
Under laboratory conditions, artificial associations were created between one-third of the screened symbiotic cyanobacteria and rice, and the agricultural potential for the association appears high since the cyanob bacteria adsorb tightly and fix more N2 than when free-living.
Co-cultivation of N2-fixing cyanobacteria and some agriculturally important plants in liquid and sand cultures
TLDR
The effect of the N2-fixing cyanobacteria on the plants tested during the co-cultivation seems to be very specific and the kind of relations depends on both the strain and the plant species.
Co-cultivation of N2-fixing cyanobacterium Nostoc sp. strain 2S9B and wheat callus.
An association was established between the N2-fixing cyanobacterium Nostoc sp. strain 2S9B and wheat callus. Cyanobacteria co-cultivated with wheat calli penetrated the callus, occupying space
Colonization of wheat (Triticum vulgare L.) by N2 -fixing cyanobacteria: IV. Dark nitrogenase activity and effects of cyanobacteria on natural 15 N abundance in the plants.
TLDR
The observed 15 N/14 N fractionation indicates that N2 fixed by the cyanobacteria contributed to the nitrogen economy of the wheat plants, irrespective of whether they were closely associated with the plant roots.
Tansley Review No. 116: Cyanobacterium-plant symbioses.
TLDR
Various aspects of these symbioses such as initiation and development, symbiont diversity, recognition and signalling, structural-functional modifications, integration, and nutrient exchange are reviewed and discussed, as are evolutionary aspects and the potential uses of cyanobacterial-plant Symbioses.
CREATION OF NEW NITROGEN-FIXING CYANOBACTERIAL ASSOCIATIONS
TLDR
Although transfer and integration of nif genes into crop plants is the long-term objective, a promising alternative is to create artificial N2-fixing symbioses or associations, which are more likely candidate than rhizobia to form productive associations with cereals.
Isolation and Characterization of Cyanobacteria from a Marine Microbial Mat
The cyanobacteria from a marine microbial mat were isolated and characterized morphologically as well a:; in respect to their salt tolerance and salinity optimum, pigment composition, and their
Colonization of wheat (Triticum vulgare L.) by N2‐fixing cyanobacteria: II. An ultrastructural study
TLDR
The technical feasibility of forming a novel association between a N2-fixing cyanobacterium and a cereal is demonstrated and cyanobacteria were found either as hormogonia, filaments or aseriate packages.
Evidence for production of the phytohormone indole-3-acetic acid by cyanobacteria
TLDR
A constitutive and possibly tryptophan-dependent production of IAA via the indole-3-pyruvic acid pathway is suggested and the possible role of I AA in cyanobacteria in general and in their interactions with plants is discussed.
Cyanobacterial diversity in the rhizosphere of rice and its ecological significance
TLDR
This investigation was undertaken to characterize the abundance and genera-wise diversity of cyanobacteria in the rice rhizosphere and nitrogen-fixing ability of the isolated strains and identified promising cyanobacterial isolates from the Rhizosphere of rice.
...
1
2
3
4
5
...