e-journal

Identification and characterization of TcCRP1, a pollen tube attractant from Torenia concolor

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Background and Aims During sexual reproduction in higher angiosperms, the pollen tubes are directed to the
ovules in the pistil to deliver sperm cells. This pollen tube attraction is highly species specific, and a group of small secreted proteins, TfCRPs, are necessary for this process in Torenia fournieri.
Methods A candidate pollen tube attractant protein in Torenia concolor, a related species of T. fournieri, was isolated and the attractant abilities between them were compared.
Key Results TcCRP1, an orthologous gene of TfCRP1 from T. concolor, is expressed predominantly in the
synergid cell. The gene product attracted pollen tubes in a concentration-dependent manner, but attracted
fewer pollen tubes from the other species.
Conclusions The results indicated that this class of CRP proteins is a common pollen tube attractant in Torenia species. The sequence diversity of these proteins is important for species-specific pollen tube attraction.
Key words: Torenia fournieri, T. concolor, sexual reproduction, TcCRP1, fertilization, pollen tube guidance, synergid cell, defensin, cysteine-rich polypeptide, CRP, speciation.

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Informasi Detail

Judul Seri

Annals of Botany

No. Panggil

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Penerbit

: Oxford University Press on behalf of the Annals of Botany Company., 2011

Deskripsi Fisik

Annals of Botany 108: 739–747, 2011

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PERTANIAN.

Info Detail Spesifik

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Pernyataan Tanggungjawab

yuli/agus

Versi lain/terkait

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