Proline is required for male gametophyte development in Arabidopsis
Abstract Background In crosses between the proline-deficient mutant homozygous for p5cs1 Covers and heterozygous for p5cs2 (p5cs1 p5cs2/P5CS2), used as male, and different Arabidopsis mutants, used as females, the p5cs2 mutant allele was rarely transmitted to the outcrossed progeny, suggesting that the fertility of the male gametophyte carrying mut