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.

Atrazine Resistance in Chenopodium album: Low and High Levels of Resistance to the Herbicide Are Related to the Same Chloroplast psbA Gene Mutation / P. Bettini; S. McNally; M. Sévignac; H. Darmency; J. Gasquez; M. Dron. - In: PLANT PHYSIOLOGY. - ISSN 0032-0889. - STAMPA. - 84:(1987), pp. 1442-1446. [10.1104/pp.84.4.1442]

Atrazine Resistance in Chenopodium album: Low and High Levels of Resistance to the Herbicide Are Related to the Same Chloroplast psbA Gene Mutation

BETTINI, PRISCILLA PAOLA;
1987

Abstract

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.
1987
84
1442
1446
P. Bettini; S. McNally; M. Sévignac; H. Darmency; J. Gasquez; M. Dron
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/3265
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 64
social impact