Pauline Raimondeau, Sayam Ksouda, William Marande, Anne-Laure Fuchs, Hervé Gryta, Anthony Theron, Aurore Puyoou, Julia Dupin, Pierre-Olivier Cheptou, Sonia Vautrin, Sophie Valière, Sophie Manzi, Djamel Baali-Cherif, Jérôme Chave, Pascal-Antoine Christin, Guillaume Besnard
Self-incompatibility (SI) has evolved independently multiple times and prevents self-fertilization in hermaphrodite angiosperms. Several groups of Oleaceae such as jasmines exhibit distylous flowers, with two compatibility groups each associated with a specific floral morph.1 Other Oleaceae species in the olive tribe have two compatibility groups without associated morphological variation.2 , 3 , 4 , 5 The genetic basis of both homomorphic and dimorphic SI systems in Oleaceae is unknown. By comparing genomic sequences of three olive subspecies (Olea europaea) belonging to the two compatibility groups, we first locate the genetic determinants of SI within a 700-kb hemizygous region present only in one compatibility group...
April 11, 2024: Current Biology: CB