Action for registration of title shall be begun by a petition to the court by the person, persons, or corporation claiming, singly or collectively, to own or to have the power of appointing or disposing of an estate in fee simple in any land whether or not subject to liens, encumbrances, or lesser estate. Minors and other persons under disability may bring and defend actions by a guardian, a guardian ad litem, a next friend, or a trustee, as the case may be.