Differential Rhizosphere Establishment and Cyanide Production by Alginate-formulated Weed-deleterious Rhizobacteria

Horace G. Gurley; Robert E. Zdor

doi:10.1007/s00284-004-4422-4

Differential Rhizosphere Establishment and Cyanide Production by Alginate-formulated Weed-deleterious Rhizobacteria

Horace G. Gurley, Robert E. Zdor

Department of Biology

Andrews University

Research output: Contribution to journal › Article › peer-review

Abstract

The effects of Pseudomonas putida ATH2-1RI/9 and Acidovorax delafieldii ATH2-2RS/1 on rhizosphere colonization, cyanide production, and growth of velvetleaf and corn was examined. When formulated in alginate beads and inoculated onto velvetleaf and corn plants (109 CFU/plant), only P. putida ATH2-1RI/9 consistently reduced velvetleaf growth. Neither isolate inhibited corn growth. Interestingly the levels of P. putida ATH2-1RI/9 in the velvetleaf rhizosphere were 1000-fold higher (7 × 107 CFU/g root) than the A. delafieldii ATH2-2RS/1 populations. Cyanide (53-68 mM/g root) was recovered from the P. putida ATH2-1RI/9-inoculated velvetleaf plants. In contrast both A. delafieldii ATH2-2RS/1 and P. putida ATH2-1RI/9 colonized the corn rhizosphere to the same extent (1-5 × 107 CFU/g root), producing 1 mM and 14 mM/g root respectively. These results suggest that bacterial formulation methods can influence the effectiveness of deleterious rhizobacteria in reducing weed growth.

Original language	American English
Pages (from-to)	167-171
Journal	Current Microbiology
Volume	50
Issue number	3
DOIs	https://doi.org/10.1007/s00284-004-4422-4
State	Published - Mar 2005

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Weed Science

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title = "Differential Rhizosphere Establishment and Cyanide Production by Alginate-formulated Weed-deleterious Rhizobacteria",

abstract = "The effects of Pseudomonas putida ATH2-1RI/9 and Acidovorax delafieldii ATH2-2RS/1 on rhizosphere colonization, cyanide production, and growth of velvetleaf and corn was examined. When formulated in alginate beads and inoculated onto velvetleaf and corn plants (109 CFU/plant), only P. putida ATH2-1RI/9 consistently reduced velvetleaf growth. Neither isolate inhibited corn growth. Interestingly the levels of P. putida ATH2-1RI/9 in the velvetleaf rhizosphere were 1000-fold higher (7 × 107 CFU/g root) than the A. delafieldii ATH2-2RS/1 populations. Cyanide (53-68 mM/g root) was recovered from the P. putida ATH2-1RI/9-inoculated velvetleaf plants. In contrast both A. delafieldii ATH2-2RS/1 and P. putida ATH2-1RI/9 colonized the corn rhizosphere to the same extent (1-5 × 107 CFU/g root), producing 1 mM and 14 mM/g root respectively. These results suggest that bacterial formulation methods can influence the effectiveness of deleterious rhizobacteria in reducing weed growth.",

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year = "2005",

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T1 - Differential Rhizosphere Establishment and Cyanide Production by Alginate-formulated Weed-deleterious Rhizobacteria

AU - Gurley, Horace G.

AU - Zdor, Robert E.

PY - 2005/3

Y1 - 2005/3

N2 - The effects of Pseudomonas putida ATH2-1RI/9 and Acidovorax delafieldii ATH2-2RS/1 on rhizosphere colonization, cyanide production, and growth of velvetleaf and corn was examined. When formulated in alginate beads and inoculated onto velvetleaf and corn plants (109 CFU/plant), only P. putida ATH2-1RI/9 consistently reduced velvetleaf growth. Neither isolate inhibited corn growth. Interestingly the levels of P. putida ATH2-1RI/9 in the velvetleaf rhizosphere were 1000-fold higher (7 × 107 CFU/g root) than the A. delafieldii ATH2-2RS/1 populations. Cyanide (53-68 mM/g root) was recovered from the P. putida ATH2-1RI/9-inoculated velvetleaf plants. In contrast both A. delafieldii ATH2-2RS/1 and P. putida ATH2-1RI/9 colonized the corn rhizosphere to the same extent (1-5 × 107 CFU/g root), producing 1 mM and 14 mM/g root respectively. These results suggest that bacterial formulation methods can influence the effectiveness of deleterious rhizobacteria in reducing weed growth.

AB - The effects of Pseudomonas putida ATH2-1RI/9 and Acidovorax delafieldii ATH2-2RS/1 on rhizosphere colonization, cyanide production, and growth of velvetleaf and corn was examined. When formulated in alginate beads and inoculated onto velvetleaf and corn plants (109 CFU/plant), only P. putida ATH2-1RI/9 consistently reduced velvetleaf growth. Neither isolate inhibited corn growth. Interestingly the levels of P. putida ATH2-1RI/9 in the velvetleaf rhizosphere were 1000-fold higher (7 × 107 CFU/g root) than the A. delafieldii ATH2-2RS/1 populations. Cyanide (53-68 mM/g root) was recovered from the P. putida ATH2-1RI/9-inoculated velvetleaf plants. In contrast both A. delafieldii ATH2-2RS/1 and P. putida ATH2-1RI/9 colonized the corn rhizosphere to the same extent (1-5 × 107 CFU/g root), producing 1 mM and 14 mM/g root respectively. These results suggest that bacterial formulation methods can influence the effectiveness of deleterious rhizobacteria in reducing weed growth.

UR - https://digitalcommons.andrews.edu/pubs/2053

U2 - 10.1007/s00284-004-4422-4

DO - 10.1007/s00284-004-4422-4

M3 - Article

VL - 50

SP - 167

EP - 171

JO - Current Microbiology

JF - Current Microbiology

IS - 3

ER -

Differential Rhizosphere Establishment and Cyanide Production by Alginate-formulated Weed-deleterious Rhizobacteria

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