NDLI: The contribution of nitrogen fixation to sugarcane (Saccharum officinarum L.), and the identification and characterization of part of the associated diazotrophic bacterial community

Content Provider	Springer Nature Link
Author	Taulé, Cecilia Mareque, Cintia Barlocco, Claudia Hackembruch, Fernando Reis, Veronica M. Sicardi, Margarita Battistoni, Federico
Copyright Year	2011
Abstract	Rhizospheric, epiphytic and endophytic bacteria are associated with several non-legumes, colonizing their surface and inner tissues. Many of these bacteria are beneficial to their hosts, and are collectively termed plant growth-promoting rhizobacteria (PGPR). Recent interest has focused particularly upon PGPR that are endophytic (i.e. PGPE), and which have been reported to be associated with important crops such as rice, wheat and sugarcane. Different mechanisms are involved in bacteria-induced plant growth promotion (PGP), including biological nitrogen fixation (BNF), mineral solubilization, production of phytohormones and pathogen biocontrol. In Uruguay, sugarcane (Saccharum officinarum L.) is considered a strategic multipurpose crop, used for bioenergy, feed, sugar and bioethanol production. The aim of this work was to estimate the BNF contribution to Uruguayan sugarcane cultivars, as well as to identify and characterize the (culturable) putatively endophytic diazotrophic bacteria associated with these varieties.Results using the $^{15}$N-dilution technique have shown that these sugarcane varieties obtain significant inputs of N from BNF (34.8–58.8% Ndfa). In parallel, a collection of 598 isolates of potentially endophytic diazotrophs was obtained from surface-sterilized stems using standard isolation techniques, and nifH $^{+}$ isolates from these were the subject of further studies. The bacteria were shown to belong to several genera, including Pseudomonas, Stenotrophomonas, Xanthomonas, Acinetobacter, Rhanella, Enterobacter, Pantoea, Shinella, Agrobacterium and Achromobacter. Additionally, some PGP features were studied in 35 selected isolates. The data obtained in this study represent the initial steps in a program aimed at determining the mechanisms of PGP of non-legume crops in Uruguay (such as sugarcane) with potentially beneficial plant-associated bacteria.
Starting Page	35
Ending Page	49
Page Count	15
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	356
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-10-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Saccharum officinarum Endophytes Diazotrophs PGPR $^{15}$N-isotope dilution Ecology Soil Science & Conservation Plant Sciences Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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The contribution of nitrogen fixation to sugarcane (Saccharum officinarum L.), and the identification and characterization of part of the associated diazotrophic bacterial community

Characteristics of nitrogen fixation and nitrogen release from diazotrophic endophytes isolated from sugarcane ( Saccharum officinarum L . ) stems

Molecular characterisation of the diazotrophic bacterial community in uninoculated and inoculated field-grown sugarcane (Saccharum sp.)

Biological Nitrogen Fixation is not a Major Contributor to the Nitrogen Demand of a Commercially Grown South African Sugarcane Cultivar

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Two seasons’ study on nifH gene expression and nitrogen fixation by diazotrophic endophytes in sugarcane (Saccharum spp. hybrids): expression of nifH genes similar to those of rhizobia

Does nitrogen transfer between plants confound $^{15}$N-based quantifications of N$_{2}$ fixation?

Comparisons of biological nitrogen fixation in association with white clover (Trifolium repens L.) under four fertiliser nitrogen inputs as measured using two $^{15}$N techniques

The contribution of nitrogen fixation to sugarcane (Saccharum officinarum L.), and the identification and characterization of part of the associated diazotrophic bacterial community

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