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Abscisic acid is not necessary for gravitropism in primary roots of Zea mays

Authors :
Randy Moore
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