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- W4318023010 endingPage "2135" @default.
- W4318023010 startingPage "2118" @default.
- W4318023010 abstract "Summary The auxin efflux PIN‐FORMED (PIN) proteins are conserved in all land plants and important players in plant development. In the moss Physcomitrella ( Physcomitrium patens ), three canonical PINs (PpPINA–C) are expressed in the leafy shoot (gametophore). PpPINA and PpPINB show functional activity in vegetative growth and sporophyte development. Here, we examined the role of PpPINC in the life cycle of Physcomitrella. We established reporter and knockout lines for PpPINC and analysed vegetative and reproductive tissues using microscopy and transcriptomic sequencing of moss gametangia. PpPINC is expressed in immature leaves, mature gametangia and during sporophyte development. The sperm cells (spermatozoids) of pin C knockout mutants exhibit increased motility and an altered flagella phenotype. Furthermore, the pin C mutants have a higher portion of differentially expressed genes related to spermatogenesis, increased fertility and an increased abortion rate of premeiotic sporophytes. Here, we show that PpPINC is important for spermatogenesis and sporophyte retention. We propose an evolutionary conserved way of polar growth during early moss embryo development and sporophyte attachment to the gametophore while suggesting the mechanical function in sporophyte retention of a ring structure, the Lorch ring." @default.
- W4318023010 created "2023-01-26" @default.
- W4318023010 creator A5001454750 @default.
- W4318023010 creator A5002023600 @default.
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- W4318023010 creator A5058765832 @default.
- W4318023010 creator A5072303424 @default.
- W4318023010 creator A5083994449 @default.
- W4318023010 creator A5086885538 @default.
- W4318023010 date "2023-01-25" @default.
- W4318023010 modified "2023-10-15" @default.
- W4318023010 title "A Physcomitrella <scp>PIN</scp> protein acts in spermatogenesis and sporophyte retention" @default.
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