Zhong, Sheng and Liu, Meiling and Wang, Zhijuan and Huang, Qingpei and Hou, Saiying and Xu, Yong-Chao and Ge, Zengxiang and Song, Zihan and Huang, Jiaying and Qiu, Xinyu and Shi, Yihao and Xiao, Junyu and Liu, Pei and Guo, Ya-Long and Dong, Juan and Dresselhaus, Thomas and Gu, Hongya and Qu, Li-Jia (2019) Cysteine-rich peptides promote interspecific genetic isolation in Arabidopsis. SCIENCE, 364 (6443): eaau9564. 851-+. ISSN 0036-8075, 1095-9203
Full text not available from this repository. (Request a copy)Abstract
Reproductive isolation is a prerequisite for speciation. Failure of communication between female tissues of the pistil and paternal pollen tubes imposes hybridization barriers in flowering plants. Arabidopsis thaliana LURE1 (AtLURE1) peptides and their male receptor PRK6 aid attraction of the growing pollen tube to the ovule. Here, we report that the knockout of the entire AtLURE1 gene family did not affect fertility, indicating that AtLURE1-PRK6-mediated signaling is not required for successful fertilization within one Arabidopsis species. AtLURE1s instead function as pollen tube emergence accelerators that favor conspecific pollen over pollen from other species and thus promote reproductive isolation. We also identified maternal peptides XIUQIU1 to -4, which attract pollen tubes regardless of species. Cooperation between ovule attraction and pollen tube growth acceleration favors conspecific fertilization and promotes reproductive isolation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POLLEN-TUBE RECEPTION; REPRODUCTIVE ISOLATION; PLANT REPRODUCTION; GUIDANCE; GENOME; FUSION; GROWTH; SPERM; SPECIFICITY; ATTRACTION; |
| Subjects: | 500 Science > 570 Life sciences 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Zellbiologie und Pflanzenphysiologie (Prof. Dr. Klaus Grasser) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2020 05:00 |
| Last Modified: | 23 Apr 2020 05:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/26973 |
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