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Abscisic acid is not necessary for gravitropism in primary roots of Zea mays
- Source :
- Annals of botany. 66
- Publication Year :
- 1990
-
Abstract
- Primary roots of Zea mays L. cv. Tx 5855 treated with fluridone are strongly graviresponsive, but have undetectable levels of abscisic acid (ABA). Primary roots of the carotenoid-deficient w-3, vp-5, and vp-7 mutants of Z. mays are also graviresponsive despite having undetectable amounts of ABA. Graviresponsive roots of untreated and wild-type seedlings contain 286 to 317 ng ABA g-1 f. wt, respectively. These results indicate that ABA is not necessary for root gravicurvature.
Details
- ISSN :
- 03057364
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Annals of botany
- Accession number :
- edsair.doi.dedup.....a2577936558da1cae28148cbdcf79624