Abstract
The effect of exogenous naphthaleneacetic acid (NAA) on the internallevels of indole-3-acetic acid (IAA) in rooting hypocotyls of Glycine max wasstudied. The hypocotyls of NAA-treated cuttings grew significantly highernumbers of adventitious roots with an increase in endogenous IAA levels thatcorresponded with a decrease in IAA oxidase activity (32 kDa) examined.Moreover, a decline of peroxidase activity was accompanied by a decrease oflignin content during root formation. Caffeic acid and ferulic acid, twocritical phenolic compounds for lignin synthesis, accumulated in NAA-treatedtissues. Consequently, the increased IAA levels with a decrease of IAAoxidase activity accompanied a lower lignin content and a reduced peroxidaseactivity in NAA-treated tissues suggests that the induction of adventitiousroots by NAA in soybean cuttings may be due to to the higher IAA levelsaccumulated in tissues.
| Original language | English |
|---|---|
| Pages (from-to) | 247-253 |
| Number of pages | 7 |
| Journal | Botanical Bulletin of Academia Sinica |
| Volume | 37 |
| Issue number | 4 |
| Publication status | Published - 1996 |
All Science Journal Classification (ASJC) codes
- Plant Science