In case of a vacancy from any cause, other than resignation or expiration of term, occurring in any of the governing boards of the state institutions, the secretary thereof shall immediately notify the governor. [C97, §1270; C24, 27, 31, 35, 39, § 1150; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §69.6 ]