English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Summary: The ability of wheat root tips to serve as efficient vertical vectors for passive transfer of Azospirillum brasilense Cd was evaluated in sterilized growth chambers containing agar, sand or soil. Most root tips, whether from main or lateral roots, were colonized by A. brasilense Cd and were capable of transferring this bacterium to a depth of 290 mm from the inoculation site. The location of A. brasilense Cd was directly dependent on root tip location; whenever root tips passed through a bacterial layer, regardless of depth, they became inoculated. However, when root tips failed to reach the inoculation site they were not colonized by A. brasilense Cd. Seed inoculation resulted in an even distribution of A. brasilense Cd along the entire root system. Inoculation at various depths in the growth medium resulted in an uneven bacterial distribution and bacteria were concentrated mainly in the elongation and small root-hair zones as well as in the inoculation site. A. brasilense Cd multiplied on the root tip during its vertical movement. However, bacterial movement in the root vicinity was minimal. A. brasilense Cd did not spread from the root surface to the rhizosphere when exogenous nutrients were supplied in this area, but did so in the presence of chemoattractants. It is suggested that the prevalence of A. brasilense Cd deeper than the initial inoculation site is a result of their passive transfer by the growing root tip.

Wheat Root Tips as a Vector for Passive Vertical Transfer of Azospirillum brasilense Cd