Article
Pollen tubes lacking a pair of K+ transporters fail to target ovules in Arabidopsis.
The Plant cell - 1 Jan 2011
Lu Yongxian, Chanroj Salil, Zulkifli Lalu, Johnson Mark A, Uozumi Nobuyuki, Cheung Alice, Sze Heven
Abstract excerpt
Flowering plant reproduction requires precise delivery of the sperm cells to the ovule by a pollen tube. Guidance signals from female cells are being identified; however, how pollen responds to those cues is largely unknown. Here, we show that two predicted cation/proton exchangers (CHX) in Arabidopsis thaliana, CHX21 and CHX23, are essential for pollen tube guidance. Male fertility was unchanged in single chx21...
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