e-journal

Receptor-like kinases as surface regulators for RAC/ROP-mediated pollen tube growth and interaction with the pistil

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Abstract.
Background:
RAC/ROPs are RHO-type GTPases and are known to play diverse signalling roles in plants. Cytoplasmic
RAC/ROPs are recruited to the cell membrane and activated in response to extracellular
signals perceived and mediated by cell surface-located signalling assemblies, transducing
the signals to regulate cellular processes. More than any other cell types in plants, pollen
tubes depend on continuous interactions with an extracellular environment produced by
their surrounding tissues as they grow within the female organ pistil to deliver sperm to
the female gametophyte for fertilization.

Scope:
We review studies on pollen tube growth that provide compelling evidence indicating that
RAC/ROPs are crucial for regulating the cellular processes that underlie the polarized cell
growth process. Efforts to identify cell surface regulators that mediate extracellular signals
also point to RAC/ROPs being the molecular switches targeted by growth-regulating female
factors for modulation to mediate pollination and fertilization. We discuss a large volume
of work spanning more than two decades on a family of pollen-specific receptor kinases
and some recent studies on members of the FERONIA family of receptor-like kinases (RLKs).

Significance:
The research described shows the crucial roles that two RLK families play in transducing
signals from growth regulatory factors to the RAC/ROP switch at the pollen tube apex to
mediate and target pollen tube growth to the female gametophyte and signal its disintegration
to achieve fertilization once inside the female chamber.

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Ketersediaan

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Informasi Detail

Judul Seri

AoB PLANTS

No. Panggil

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Penerbit

Oxford : Oxford University Press., 2011

Deskripsi Fisik

AoB PLANTS 2011 plr017 doi:10.1093/aobpla/plr017

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

2011 plr017

Subjek

PEMULIAAN TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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