This is modulated
through the positive (flowers) and negative (roots) regulation of
gibberellic acid (GA) signaling (Zhang et al.,2007).At late stages of
flowerdevelopmentstamenfilamentsof atspl8 mutantsareshorter
than wild type and anthers produce fewer pollen grains due to a
reduction in sporogenous cells undergoing meiosis; a similar, but
weaker, reduction in meiosis is also observed in the ovule