Article
Sperm cells are passive cargo of the pollen tube in plant fertilization.
Nature plants - 6 Jun 2017
Zhang Jun, Huang Qingpei, Zhong Sheng, Bleckmann Andrea, Huang Jiaying, Guo Xinyang, Lin Qing, Gu Hongya, Dong Juan, Dresselhaus Thomas, Qu Li-Jia
Abstract excerpt
Sperm cells of seed plants have lost their motility and are transported by the vegetative pollen tube cell for fertilization, but the extent to which they regulate their own transportation is a long-standing debate. Here we show that Arabidopsis lacking two bHLH transcription factors produces pollen without sperm cells. This abnormal pollen mostly behaves like the wild type and demonstrates that sperm cells are...
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