Auxin and Its Interaction With Ethylene Control Adventitious Root Formation and Development in Apple Rootstock
Tuanhui Bai, Zhidan Dong, Xianbo Zheng, Shangwei Song, Jian Jiao, Miaomiao Wang, Chunhui Song
Abstract
) involved in AR formation. Comparison of different periods of IBA application indicated that IBA was necessary for root primordium formation, while long time IBA treatment obviously inhibited root elongation. RNA-seq analysis revealed that many plant hormone metabolism and signal transduction related genes were differentially expressed. IBA stimulated the production of ethylene during AR formation. Auxin inhibiting ARs elongation depended on ethylene. Together, our results suggest that the inhibitory role of auxin on AR elongation in apples is partially mediated by stimulated ethylene production.
Topics & Concepts
RootstockAuxinEthyleneBiologyRoot (linguistics)BotanyPlant developmentHorticultureGeneticsGenePhilosophyCatalysisLinguisticsBiochemistryPlant Physiology and Cultivation StudiesPlant tissue culture and regenerationPlant Reproductive Biology