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United States Department of Agriculture

Agricultural Research Service

Research Project: MOLECULAR DEVELOPMENTAL GENETICS OF POLLEN AND POLLEN-PISTIL INTERACTIONS IN CROP PLANTS Title: The C-terminal hypervariable domain targets Aradopsis ROP9 to the invaginated pollen tube plasma membrane

Authors
item Li, Sha -
item Zhou, Liang-Zi -
item Feng, Qiang-Nan -
item McCormick, Sheila
item Zhang, Yan -

Submitted to: Molecular Plant
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: June 14, 2013
Publication Date: July 1, 2013
Citation: Li, S., Zhou, L., Feng, Q., Mccormick, S.M., Zhang, Y. 2013. The C-terminal hypervariable domain targets Aradopsis ROP9 to the invaginated pollen tube plasma membrane. Molecular Plant. 6:1362-1364.

Interpretive Summary: In pollen, a protein called Rop9, a class II Rop, is localized differently than is a type I Rop. Various gene constructs were studied to determine which part of the Rop9 protein is important for its localization.

Technical Abstract: Rop9 is a small GTPase of the Type II class, whereas the often studied type I Rops play roles during pollen tube growth. In pollen, Rop9 is located at the invaginated plasma membrane that surrounds the sperm cells, whereas type I Rops are located at the apical membrane of the pollen tube. The C-terminal end of Rop9 is responsible for its localization around the sperm cells, and this localization was independent of proteins called RhoGDIs and independent of its bound nucleotide.

Last Modified: 10/30/2014
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