Fluctuation in levels of endogenous plant hormones in ovules of normal and mutant cotton during flowering and their relation to fiber development

J. G. Chen, X. M. Du, H. Y. Zhao, X. Zhou

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The contents of indole-3-acetic acid (IAA), gibberellins (GAs), abscisic acid (ABA), and cytokinins were determined in ovules of normal cotton (Tm-1) and a kind of fiber differentiation mutant (Xin) before and after flowering by enzyme-linked immunosorbent assays. It was found that 24 h before flowering, a peak of IAA content was observed in ovules of Tm-1, whereas in ovules of Xin, a low level of IAA was determined. From -1 day (1 day before flowering) to +3 days (3 days after flowering), GA1+3 levels in ovules of Xin were 40-70% lower than those of Tm-1; GA4+7 levels were very low, and there was no visible difference in GA4+7 content between normal and mutant cotton. The ABA content in ovule of Tm-1 decreased by 70% 3 days after flowering, whereas that of Xin only decreased by 20%. The levels of cytokinins in ovules of Tm-1 decreased after flowering, and those of Xin kept up a steady increase.

Original languageEnglish
Pages (from-to)173-177
Number of pages5
JournalJournal of Plant Growth Regulation
Volume15
Issue number4
DOIs
StatePublished - 1996
Externally publishedYes

Keywords

  • Cotton ovule
  • Fiber development
  • Mutant
  • Plant hormones

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