Molecular Research Progress on Gametophytic Self-Incompatibility in Rosaceae Species
Daouda Coulibaly,
Feng Gao,
Yang Bai,
Kenneth Omondi Ouma,
Augustine Antwi-Boasiako,
Pengyu Zhou,
Shahid Iqbal,
Amadou Apho Bah,
Xiao Huang,
Sabaké Tianégué Diarra,
Silas Segbo,
Faisal Hayat,
Zhihong Gao
Affiliations
Daouda Coulibaly
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Feng Gao
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Yang Bai
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Kenneth Omondi Ouma
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Augustine Antwi-Boasiako
Council for Scientific and Industrial Research-Crops Research Institute (CSRI-CRI), Fumesua, Kumasi P.O. Box 3785, Ghana
Pengyu Zhou
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Shahid Iqbal
Horticultural Science Department, North Florida Research and Education Center, University of Florida/IFAS, Quincy, FL 32351, USA
Amadou Apho Bah
Department of Agricultural Sciences and Techniques-Horticulture, Rural Polytechnic Institute for Training and Applied Research (IPR/IFRA) of Katibougou, Koulikoro P.O. Box 06, Mali
Xiao Huang
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Sabaké Tianégué Diarra
Department of Agricultural Sciences and Techniques-Horticulture, Rural Polytechnic Institute for Training and Applied Research (IPR/IFRA) of Katibougou, Koulikoro P.O. Box 06, Mali
Silas Segbo
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Faisal Hayat
Department of Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
Zhihong Gao
Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Self-incompatibility (SI) is a complex mechanism that prevents plants from self-fertilizing to preserve and promote genetic variability. The angiosperm species have developed two different SI systems, the sporophytic (SSI) and the gametophytic (GSI) systems. SI is a significant impediment to steady fruit production in fruit tree species of the Rosaceae. In Rosaceae, GSI is genetically regulated via a single locus, named the ‘S-locus’, which includes a minimum of two polymorphic and relatively intercorrelated S genes: a pistil-expressed S-RNase gene and several pollen-expressed SFBB (S-locus F-Box Brothers) or SFB (S haplotype-specific F-box protein). This necessitates the interaction of S-RNases with the male determinants. Although genetic and molecular analyses of S genes have shown that mutations in both pistils and pollen-specific components induce self-compatibility in many species and cultivars, other genes or molecules outside the S-locus can co-participate in the male gamete rejection in GSI. However, we highlight and synthesize the most recent knowledge on different mechanisms of GSI in Rosaceae in this current review.
