I’m gonna go out on a limb and pre-, not assume that this wasn’t intentional on George’s part, but I love the symbolism of the setting Qui-Gon and Obi-Wans’ duel with Maul. Naboo is blessed with natural plasma goo oozing from its honeycomb outer core. Apart from being the essence of a lightsaber blade, plasma’s also the most chaotic state of matter. Ionized gas equal hyperactive gas. Like gas molecules are the Tasmanian devil, but plasma is him pumped full of uppers and caffeine. It’s pure, unpredictable chaos. It goes hand-in-hand withe the uncertain outcome of the duel and its massive consequences for Anakin. In a plasma, stuff that seems minor at first actually are the deciding factor (Maul kicking Obi-Wan’s hilt down the core shaft but not Qui-Gon’s). The two Jedi being separated increases the stakes, which is where the laser gates come in.
The laser gate corridor to the generator core is inworld symbolic of hte Naboo’s belief of the 6 gates against chaos. They’re there to contain the damage so that if something ever went wrong with the generator and it was going to go Chernobyl, Theed wouldn’t become a radioactive, poisoned ghost city like Pripyat, Ukraine. Ironically tho, by separating Obi-Wan from Qui-Gon, they end up causing future chaos for the galaxy (Anakin is deprived of a father figure, and potentially a grandpa figure in the form of Dooku).
I’ve included a pic from the Kristin Lund’s (now Legends) book Inside the World of Star Wars Episode I for more insight