한빛사논문
- 조회912
Byung Ha Lee1,4, Rui Wang1,4, Ingrid M. Moberg 1,2, Sarah H. Reeder1, Prativa Amom1, Michelle H. Tan1, Katelyn Amstutz 1, Pallavi Chandna1, Adam Helton 1, Ekaterina P. Andrianova3, Igor B. Zhulin 3 and Anna A. Dobritsa 1 ,*
1Department of Molecular Genetics and Center for Applied Plant Sciences, Ohio State University, Columbus, OH, USA. 2Norwegian Science and Technology University, Ålesund, Norway. 3Department of Microbiology, Ohio State University, Columbus, OH, USA. 4These authors contributed equally: Byung Ha Lee, Rui Wang.
*Corresponding author.
Abstract
Pollen apertures are an interesting model for the formation of specialized plasma-membrane domains. The plant-specific protein INP1 serves as a key aperture factor in such distantly related species as Arabidopsis, rice and maize. Although INP1 orthologues probably play similar roles throughout flowering plants, they show substantial sequence divergence and often cannot substitute for each other, suggesting that INP1 might require species-specific partners. Here, we present a new aperture factor, INP2, which satisfies the criteria for being a species-specific partner for INP1. Both INP proteins display similar structural features, including the plant-specific DOG1 domain, similar patterns of expression and mutant phenotypes, as well as signs of co-evolution. These proteins interact with each other in a species-specific manner and can restore apertures in a heterologous system when both are expressed but not when expressed individually. Our findings suggest that the INP proteins form a species-specific functional module that underlies formation of pollen apertures.
논문정보
- Research article
- 2021년 06월 (BRIC 등록일 2021-07-05)
- 국외 연구진
- 생명과학 > 식물학
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