In vitro microspore selection in maize anther culture with oxidative-stress stimulators

Protoplasma. 2006 Aug;228(1-3):87-94. doi: 10.1007/s00709-006-0159-1. Epub 2006 Aug 31.

Abstract

In order to produce doubled-haploid maize plants tolerant of oxidative stress, in vitro microspore selection was carried out in anther culture with reactive oxygen species (ROS) progenitors such as paraquat, menadione, tert-butylhydroperoxide (t-BHP), and methionine combined with riboflavin. All the ROS progenitors reduced the anther induction, the formation of microspore-derived structures, and their regeneration potential. Abnormal cell divisions and progeny cell degradation could be observed during the development of microspores treated with ROS progenitors. Menadione and t-BHP influenced the microspore developmental pathway, as menadione induced the formation of embryoids, while t-BHP increased the proportion of calli in the microspore-derived structures. As the result of in vitro selection, 15, 10, 10, and 3 fertile doubled-haploid plants were obtained in cultures treated with paraquat, t-BHP, methionine combined with riboflavin, and menadione, respectively.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Survival / drug effects
  • Dose-Response Relationship, Drug
  • Flowers / drug effects*
  • Oxidative Stress / drug effects*
  • Reactive Oxygen Species / metabolism*
  • Regeneration / drug effects
  • Seeds / drug effects*
  • Seeds / genetics
  • Seeds / growth & development
  • Seeds / metabolism
  • Zea mays / drug effects*
  • Zea mays / genetics
  • Zea mays / growth & development
  • Zea mays / metabolism

Substances

  • Reactive Oxygen Species