Record ID No. |
1788 |
Author(s) |
Siviero, M.A., Motta, A.M., Lima, D.D.S., Birolli, R.R., Huh, S.Y., Santinoni, I.A., Murate, L.S., deCastro, C.M.A., Miyauchi, M.Y.H., Zangaro, W., Nogueira, M.A., Andrade, G , 2008 |
Affiliation |
University of Estadual Londrina, CCB, Department of Microbiology, Lab Ecol Microbiana, Caixa Postal 6001, BR-86051990 Londrina, PR, BRAZIL |
Title |
Interaction among N-fixing bacteria and AM fungi in Amazonian legume tree (Schizolobium amazonicum) in field conditions |
Source. Vol.(no):Page |
Applied Soil Ecology.39(2):144-152p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
BRAZIL, South America |
Abstracts |
The Amazon forest has suffered an accelerated degradation process due to cutting
to implant agricultural systems, pasture and electricity generation projects and disorganized
mining and wood exploitations. The challenge is to develop new technologies for wood production
in agroforestry systems. Schizolobium amazonicum is a legume tree, with fast growth and its wood
is employed to make furniture. More and more areas have been sowed with S. Amazonicum, but this
production system is very poor technologically. In the present paper we proposed to evaluate the
effect on the plant growth and plant survival of three arbuscular mycorrhizal fungi (Glomus
clarum, Glomus intraradices and Glomus etunicatum) associated with three N-fixing bacteria
strains (two Rhizobium sp. And one Burkholderia sp.). Two methods of planting were used: direct
sowing or transplantation of seedlings after initial growth in nursery. G. Intrarradices was more
effective in plant growth when inoculated in seed, and the bacteria strains had no effect when
inoculated alone or with AM fungi. However, in seedlings the dual inoculation was more effective.
At 210 days Rhi1 and Rhi2 associated with G. Clarum or G. Etunicatum increase plant growth. At
390 days G. Clarum associated with LEM6 or Rhi1 increased most of the parameters evaluated,
including biomass and wood production. Direct sowing is the traditional method largely used in
the non-tillage areas and was more ineffective. The presence of microorganisms showed significant
differences when compared with non-inoculated plant. The results suggested that some microbial
combinations were effective in stimulating plant growth, but further experiments need to be
carried out to evaluate which N-fixing bacteria and AM fungi is more effective for each planting
systems for S. Amazonicum. (c) 2007 Elsevier B.V. All rights reserved. |