Event Title

P-44 The Possible Effects of Deleterious Rhizobacterial Combinations on the Growth of the Weed Velvetleaf

Presenter Information

Athena Smith, Andrews University

Location

Buller Hallway

Start Date

3-6-2015 2:30 PM

End Date

3-6-2015 4:00 PM

Description

The use of biological agents in the control of the invasive weed velvetleaf Abutilon theophrasti is attractive due to this weeds development of herbicide resistance. One option is the utilization of deleterious rhizobacteria with amendments to optimize their effectiveness. Indole acetic acid (IAA)-producing Rhizobium rubi AT3-4RS/6 (RS) and cyanogenic Pseudomonas putida ATH2-1RI/9 (RI) were used to inoculate soil with and without amino acid amendments. RS & tryptophan (a precursor of IAA synthesis) caused the least shoot growth, but there was less root growth with RI than with RS. All roots were colonized by rhizobacteria, on average, 1.40E+10 CFU/gram dry root.

Acknowledgments

Undergraduate Research Scholar

Advisor: Rob Zdor, Biology

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Mar 6th, 2:30 PM Mar 6th, 4:00 PM

P-44 The Possible Effects of Deleterious Rhizobacterial Combinations on the Growth of the Weed Velvetleaf

Buller Hallway

The use of biological agents in the control of the invasive weed velvetleaf Abutilon theophrasti is attractive due to this weeds development of herbicide resistance. One option is the utilization of deleterious rhizobacteria with amendments to optimize their effectiveness. Indole acetic acid (IAA)-producing Rhizobium rubi AT3-4RS/6 (RS) and cyanogenic Pseudomonas putida ATH2-1RI/9 (RI) were used to inoculate soil with and without amino acid amendments. RS & tryptophan (a precursor of IAA synthesis) caused the least shoot growth, but there was less root growth with RI than with RS. All roots were colonized by rhizobacteria, on average, 1.40E+10 CFU/gram dry root.