Phosphate-mineralizing Actinomycetes involved in root interaction of Glomus sp.- white clover
DOI:
https://doi.org/10.15517/am.v22i2.11826Keywords:
Streptomyces sp., phosphatases, solubilization, arbuscular mycorhiza.Abstract
The objective of this work was to determine the capacity of actinomicetes for organic phosphorus mineralization and their rhyzospere
interaction with mycorrhiza of Trifolium repens L. (white
clover). In January 2009, at the laboratory of the Unidad de
Investigaciones Agropecuarias (UNIDIA) of the Pontifi cia
Universidad Javeriana, Bogotá, Colombia, the phosphatase
activity of Streptomyces sp. (strain MCR9), Streptomyces
sp. (strain MCR26) and Thermobifi da sp. (strain MCR24)
were determined using the p-nitrofenil phosphate technique.
Thermobifi da sp. (strain MCR24) showed the lowest activity.
Inoculation of actinomycetes alone resulted in higher values
of inorganic soil P, while leaf P content was higher when coinoculation
of actinomycete-Glomus sp. occurred, with the
exception of the strain Thermobifi da sp. (strain MCR24). Coinoculation with actynomicetes and Glomus sp. stimulated
biomass production and colonization percent. Actynomicetes
are sinergistic with Glomus sp., resulting in benefi ts for the
plant and the mycorrhiza. Analysis of variance and “t” tests
ALS (P<0,05) were conducted to compare the treatments.
The relation between the degree of mycorrhization plant dry
weight was determined by the “r” correlation coeffi cient, and
plants associated with microorganisms was higher than 70%.
Downloads
Downloads
How to Cite
Issue
Section
License
1. Proposed policy for open access journals
Authors who publish in this journal accept the following conditions:
a. Authors retain the copyright and assign to the journal the right to the first publication, with the work registered under the attribution, non-commercial and no-derivative license from Creative Commons, which allows third parties to use what has been published as long as they mention the authorship of the work and upon first publication in this journal, the work may not be used for commercial purposes and the publications may not be used to remix, transform or create another work.
b. Authors may enter into additional independent contractual arrangements for the non-exclusive distribution of the version of the article published in this journal (e.g., including it in an institutional repository or publishing it in a book) provided that they clearly indicate that the work was first published in this journal.
c. Authors are permitted and encouraged to publish their work on the Internet (e.g. on institutional or personal pages) before and during the review and publication process, as it may lead to productive exchanges and faster and wider dissemination of published work (see The Effect of Open Access).
