Atrazine Resistance in Chenopodium album | Zendy

P. Bettini | Zendy; Sheila McNally | Zendy; Mireille Sévignac | Zendy; Henri Darmency | Zendy; Jacques Gasquez | Zendy; Michel Dron | Zendy

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Atrazine Resistance in Chenopodium album

Author(s) -

P. Bettini,

Sheila McNally,

Mireille Sévignac,

Henri Darmency,

Jacques Gasquez,

Michel Dron

Publication year - 1987

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.84.4.1442

Subject(s) - chenopodium , phenotype , atrazine , biology , glycine , gene , genetics , chenopodiaceae , botany , microbiology and biotechnology , amino acid , weed , agronomy , pesticide

In Chenopodium album two different levels of atrazine resistance have been found according to following criteria: lethal dose and leaf fluorescence curve. The intermediate (I) phenotype is represented by a low level of resistance and a typical I fluorescence curve. It arose at high frequency, within one generation, after self-pollination of particular plants displaying a susceptible (S) phenotype. The resistance phenotype (Ri) has a high level of resistance and presents a typical resistant fluorescence curve. It appeared after self-pollination of chemically treated I plants. The I, Ri, and also R (resistant plants found in atrazine treated fields) phenotypes contain a serine to glycine mutation at amino acid position 264 in the chloroplast psbA gene product. The steady state level of the psbA gene transcript is not modified between S, I, Ri, and R phenotypes.

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