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Defensin-like polypeptide LUREs are pollen tube attractants secreted from synergid cells

Okuda, Satohiro ; Tsutsui, Hiroki ; Shiina, Keiko ; Sprunck, Stefanie ; Takeuchi, Hidenori ; Yui, Ryoko ; Kasahara, Ryushiro D. ; Hamamura, Yuki ; Mizukami, Akane ; Susaki, Daichi ; Kawano, Nao ; Sakakibara, Takashi ; Namiki, Shoko ; Itoh, Kie ; Otsuka, Kurataka ; Matsuzaki, Motomichi ; Nozaki, Hisayoshi ; Kuroiwa, Tsuneyoshi ; Nakano, Akihiko ; Kanaoka, Masahiro M. ; Dresselhaus, Thomas ; Sasaki, Narie ; Higashiyama, Tetsuya



Abstract

For more than 140 years, pollen tube guidance in flowering plants has been thought to be mediated by chemoattractants derived from target ovules(1). However, there has been no convincing evidence of any particular molecule being the true attractant that actually controls the navigation of pollen tubes towards ovules. Emerging data indicate that two synergid cells on the side of the egg cell emit ...

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