AI Article Synopsis
- During sexual reproduction in flowering plants, pollen tubes grow towards the female gametophyte and release sperm, while the study highlights shared molecular components between pollen tube reception and powdery mildew infection.
- NORTIA (NTA) and FERONIA (FER) are key proteins that regulate how pollen tubes interact with the plant's reproductive cells, and mutations in the FER gene are also linked to resistance against powdery mildew.
- This suggests that similar molecular mechanisms are at play in both pollen tube reception and the plant's defense against powdery mildew infection.
Article Abstract
During sexual reproduction in flowering plants such as Arabidopsis, a tip-growing pollen tube (PT) is guided to the synergid cells of the female gametophyte, where it bursts and releases the two sperm. Here we show that PT reception and powdery mildew (PM) infection, which involves communication between a tip-growing hypha and a plant epidermal cell, share molecular components. NORTIA (NTA), a member of the MLO family originally discovered in the context of PM resistance, and FERONIA (FER), a receptor-like kinase, both control PT reception in synergids. Homozygous fer mutants also display PM resistance, revealing a new function for FER and suggesting that conserved components, such as FER and distinct MLO proteins, are involved in both PT reception and PM infection.
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| http://dx.doi.org/10.1126/science.1195211 | DOI Listing |
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