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LRX8–11 are highly expressed in mature pollen grains and growing pollen tubes. The detection of GUS activity in 5-week-old wild-type plants expressing ProLRX8:GUS, ProLRX9:GUS, ProLRX10:GUS, or ProLRX11:GUS is shown. Developing male gametophytes were stained with DAPI and GUS. UMP, Uninuclear microspore; BCP, bicellular pollen; TCP, early tricellular pollen; MP, mature pollen grain; PT, pollen tube. Bars = 10 μm.
