Correlation between α-amylase gene expression and seedling vigor in rice

Erik E. Karrer, John M. Chandler, Majid R. Foolad, Raymond L. Rodriguez

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

This report examines the relationship between seedling vigor, α-amylase enzyme activity and α-amylase mRNA accumulation in ten varieties of rice (Oryza sativa L.) grown at two temperatures (15°C and 30°C). A significant, positive correlation was observed between seedling vigor, α-amylase enzyme activity, and the accumulation of mRNA from one rice α-amylase gene (RAmy1A) at both temperature regimens. The results of this study support previous experiments which have correlated α-amylase enzyme activity to seedling vigor. We have extended this correlation to the expression of one of ten genes that comprise the rice α-amylase multigene family. These results suggest that the expression of α-amylase gene RAmy1A is an important, and possibly rate-limiting factor in determining seedling vigor in rice.

Original languageEnglish (US)
Pages (from-to)163-169
Number of pages7
JournalEuphytica
Volume66
Issue number3
DOIs
StatePublished - Jan 1992

Keywords

  • α-amylase enzyme activity
  • α-amylase mRNA levels
  • cold temperature
  • differential gene expression
  • Oryza sativa
  • rice

ASJC Scopus subject areas

  • Plant Science
  • Horticulture
  • Agronomy and Crop Science

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