Abstract: The present invention relates to a transgenic expression construct for plants, comprising an anti-apoptotic gene of the BAG family of plant genes and a promoter overexpressing said gene in a plant or part thereof. Respective transgenic plants exhibit at least one yield gain phenotype when compared to a non-transgenic plant. The present invention further relates to a method for producing a transgenic plant or part thereof, comprising introducing the transgenic expression construct of the invention into said plant or part thereof, and respective transgenic plants or parts thereof as produced.