Wang, Yuebin and Li, Wenqiang and Wang, Luxi and Yan, Jiali and Lu, Gang and Yang, Ning and Xu, Jieting and Wang, Yuqing and Gui, Songtao and Chen, Gengshen and Li, Shuyan and Wu, Chengxiu and Guo, Tingting and Xiao, Yingjie and Warburton, Marilyn L. and Fernie, Alisdair R. and Dresselhaus, Thomas and Yan, Jianbing (2022) Three types of genes underlying the Gametophyte factor1 locus cause unilateral cross incompatibility in maize. NATURE COMMUNICATIONS, 13 (1): 4498. ISSN 2041-1723
Full text not available from this repository. (Request a copy)Abstract
Unilateral cross incompatibility (UCI) occurs between popcorn and dent corn, and represents a critical step towards speciation. It has been reported that ZmGa1P, encoding a pectin methylesterase (PME), is a male determinant of the Ga1 locus. However, the female determinant and the genetic relationship between male and female determinants at this locus are unclear. Here, we report three different types, a total of seven linked genes underlying the Ga1 locus, which control UCI phenotype by independently affecting pollen tube growth in both antagonistic and synergistic manners. These include five pollen-expressed PME genes (ZmGa1Ps-m), a silk-expressed PME gene (ZmPME3), and another silk-expressed gene (ZmPRP3), encoding a pathogenesis-related (PR) proteins. ZmGa1Ps-m confer pollen compatibility. Presence of ZmPME3 causes silk to reject incompatible pollen. ZmPRP3 promotes incompatibility pollen tube growth and thereby breaks the blocking effect of ZmPME3. In addition, evolutionary genomics analyses suggest that the divergence of the Ga1 locus existed before maize domestication and continued during breeding improvement. The knowledge gained here deepen our understanding of the complex regulation of cross incompatibility. Unilateral cross incompatibility (UCI) is a type of prezygotic reproductive isolation, which is associated with multiple loci in maize. Here, the authors use genetic analysis to separate the Ga1 locus into two functional components and identify seven linked genes encoding three types of proteins.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POLLEN-TUBE GROWTH; REPRODUCTIVE ISOLATION; ALIGNMENT; PEPTIDES; SOFTWARE; PROTEINS; BARRIERS; TRAITS; SPERM |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Zellbiologie und Pflanzenphysiologie (Prof. Dr. Klaus Grasser) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 Feb 2024 07:44 |
| Last Modified: | 20 Feb 2024 07:44 |
| URI: | https://pred.uni-regensburg.de/id/eprint/58211 |
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