CMS

Leppälä J & Savolainen O 2011 Nuclear-cytoplasmic interactions reduce male fertility in hybrids of Arabidopsis lyrata subspecies. Evolution 65:2959-2972.

• in the present cross, the major fertility restorer was found on AL2, near a marker in gene AT1G62520
• a cluster of PPR genes, the closest homologs of CMS restorer genes of petunia, radish, and rice, in A. thaliana locates in the region syntenic with our fertility restorer QTL at AL2

• it is not fully understood why CMS appears in hermaphroditic plants
• previous studies were typically conducted on hybrids between hermaphroditic species or within gynodioecious species
• standing genetic variation for CMS within hermaphroditic populations has not often been studied