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Glyphosate Absorption and Translocation in Rust-Infected Quackgrass (Elytrigia repens)

Published online by Cambridge University Press:  12 June 2017

Russell W. Wallace  and
Robin R. Bellinder
Russell W. Wallace
Affiliation:
Dep. of Fruit and Vegetable Sci., 134 Plant Sci. Bldg., Cornell Univ., Ithaca, NY 14853-0327
Robin R. Bellinder
Affiliation:
Dep. of Fruit and Vegetable Sci., 134 Plant Sci. Bldg., Cornell Univ., Ithaca, NY 14853-0327
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Abstract

Puccinia coronata infection increased absorption of 14C-glyphosate in quackgrass 3 days after inoculation (DAI) when compared to 0,6,9, or 12 DAI. Days after inoculation had no effect on glyphosate translocation out of treated leaves until 9 to 12 DAI when 89% of the absorbed 14C-glyphosate was retained within the infected leaf. In contrast, only 43% was retained in leaves treated at 0 DAI. In other studies, 14C-glyphosate absorption increased linearly from 21 to 35% 12 to 96h after treatment (HAT). Differences between control and rust-infected plants were not significant. Sixty-three percent of absorbed 14C-glyphosate translocated out of control leaves by 96 HAT, while only 10% translocated out of rust-infected leaves. Additionally, 28 and 4% of the 14C absorbed was recovered from the rhizomes of control and rust-infected plants, respectively.

Keywords

Glyphosate, N-(phosphonomethyl)glycineElytrigia repens (L.) Nevski#3 AGRREPuccinia coronata Corda. var. agropyronBiocontroldiseaseAGRRE
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 43 , Issue 1 , March 1995 , pp. 1 - 6
Copyright
Copyright © 1995 by the Weed Science Society of America 

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