Husband or wife may be witness.

In all prosecutions under section 726.3 , 726.5 or 726.6 , the husband or wife is a competent witness for the state and may testify to relevant acts or communications between them. [S13, §4775-b; C24, 27, 31, 35, 39, § 13231; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, §731.2; C79, 81, §726.4 ] 83 Acts, ch 37, §6 Referred to in §600B.29