The Huntington Theatre Company announced Monday that Maria Aitken — not Nicholas Martin — will direct Tony nominee Kate Burton in the upcoming production of Chekhov’s “The Seagull.” Martin was slated to direct, but has withdrawn for “personal reasons,” according to a statement released by the theater company. “Maria is such a beloved member of the Huntington family and gifted interpreter of the classics,” said Huntington artistic director Peter DuBois. “Nicky assembled an extraordinary group of artists for this production, and I know Maria will build upon that foundation to bring this masterpiece to life.” In 2008, Martin, then the artistic director of the Williamstown Theatre Festival, took some time off after suffering a minor stroke. Burton, who previously appeared in “Hedda Gabler” and “The Cherry Orchard” at the Huntington, will be joined in the cast of “The Seagull” by her son, Morgan Ritchie. The show begins previews March 7 and opens March 12. . . . Meanwhile, Peter Kadzis, former executive editor of the late great Boston Phoenix, has been named senior editor at WGBHnews.org, a newly created position overseeing all aspects of the WGBH News website.”Since he joined our team as a contributing editor, we all have come to benefit from his experience, institutional history, Rolodex, and engaging personality,” WGBH news executive managing editor Linda Polach said in a statement.