Microtubule motors and pollen tube growth—still an open question

摘要: The growth of pollen tubes is supported by the continuous supply secretory vesicles in tip area. Movement and accumulation driven dynamic interplay between actin cytoskeleton motor proteins myosin family. A combination two protein systems also responsible for bidirectional movement larger organelle classes. In contrast, role microtubules microtubule-based motors less clear often ambiguous. Nevertheless, there evidence which shows that tube contains a number kinesin These are likely to be associated with organelles and, consequently, they have been hypothesized participate distribution during growth. Whether microtubule take part either transport or positioning not known sure, but this second possibility. This review will discuss current knowledge (including kinesins hypothetical dyneins) make some hypothesis about their tube.