Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.)

Vilmos Soós, Balázs Jóri, Dóra Szego, Zoltán Bratek, Ilona Rácz, Demeter Lásztity, Z. Szigeti

Research output: Contribution to journalArticle

Abstract

In paraquat resistant biotype of C. canadensis inducible proteins are supposed to play a role in the mechanism of resistance. Here we studied the uptake and intracellular localization of Pq, the effect of selective inhibitors on the uptake and sequestration, and the Pq induced changes of gene expression in susceptible and resistant biotypes. In resistant plants Pq was found to reach the chloroplast in a short time, however, to the end of recovery period it was removed to vacuoles and stored for one month. Sequestration to vacuoles was inhibited by nitrate. Pq upregulated numerous genes in susceptible and resistant biotypes. Sequencing made the opportunity to identify 4 genes; the iron storage protein Ferritin2, a Myb transcription factor, CAT4 amino acid transporter and a xenobiotic transporter. Transporters expressed at higher levels in resistant plants as compared to susceptible ones. They are supposed to play important part in paraquat resistance.

Original languageEnglish
Pages (from-to)191-193
Number of pages3
JournalActa Biologica Szegediensis
Volume49
Issue number1-2
Publication statusPublished - 2005

Fingerprint

Conyza
Conyza canadensis
Paraquat
paraquat
Vacuoles
biotypes
transporters
Genes
Amino Acid Transport Systems
vacuoles
Xenobiotics
Chloroplasts
Gene expression
Nitrates
amino acid transporters
uptake mechanisms
Proteins
Transcription Factors
Iron
xenobiotics

Keywords

  • Conyza canadensis
  • Paraquat resistance
  • Pq-induced genes
  • Transport

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Cell Biology
  • Neuroscience(all)
  • Applied Microbiology and Biotechnology

Cite this

Soós, V., Jóri, B., Szego, D., Bratek, Z., Rácz, I., Lásztity, D., & Szigeti, Z. (2005). Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.). Acta Biologica Szegediensis, 49(1-2), 191-193.

Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.). / Soós, Vilmos; Jóri, Balázs; Szego, Dóra; Bratek, Zoltán; Rácz, Ilona; Lásztity, Demeter; Szigeti, Z.

In: Acta Biologica Szegediensis, Vol. 49, No. 1-2, 2005, p. 191-193.

Research output: Contribution to journalArticle

Soós, V, Jóri, B, Szego, D, Bratek, Z, Rácz, I, Lásztity, D & Szigeti, Z 2005, 'Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.)', Acta Biologica Szegediensis, vol. 49, no. 1-2, pp. 191-193.
Soós V, Jóri B, Szego D, Bratek Z, Rácz I, Lásztity D et al. Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.). Acta Biologica Szegediensis. 2005;49(1-2):191-193.
Soós, Vilmos ; Jóri, Balázs ; Szego, Dóra ; Bratek, Zoltán ; Rácz, Ilona ; Lásztity, Demeter ; Szigeti, Z. / Role of transporters in the mechanism of paraquat resistance of horseweed (Conyza canadensis (L.) Cronq.). In: Acta Biologica Szegediensis. 2005 ; Vol. 49, No. 1-2. pp. 191-193.
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