期刊
TRENDS IN PLANT SCIENCE
卷 17, 期 1, 页码 32-38出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2011.10.007
关键词
-
资金
- National Science Foundation [MCB-0847876]
Growing pollen tubes require calcium to maintain a tip-focused cytosolic gradient and as a constituent of the constantly expanding cell wall. Advances in cell and molecular biology as well as electrophysiology implicate several candidate channels and receptors in the flow of calcium into the cell. In this review we discuss the channels that have been identified and consider the role of the growing tip cell wall acting as a sink for calcium thus accounting for differences in oscillatory phase between influx measured on the outside of the cell and changes in tip concentration inside the cell. We also briefly draw attention to uptake mechanisms that restrict and shape the calcium signature in the growing pollen tube.
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