Talk:Pollen tube

Wiki Education Foundation-supported course assignment

This article was the subject of a Wiki Education Foundation-supported course assignment, between 2 April 2019 and 6 June 2019. Further details are available on the course page. Student editor(s): Calliez97. Peer reviewers: Calliez97.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 02:30, 18 January 2022 (UTC)

Untitled

Im currently taking a plant biology class, and I have learned about pollen tube evolution from ferns to angiosperms with free living sperm to fast growing pollen tubes for non-motile sperm. In this article, there is little information about the evolution and mechanism of the tube formation. This is an important structure in transferring pollen, specifically for non-motile sperm.

I want to focus on studies that reflect on cell communication and signaling in pollen tube formation, the evolution of pollen tube from seed ferns to gymnosperms, and highlight the process among different species (specifically in rate of growth).

Here are some sources I have looked into: Signaling for pollen tube growth[1] https://link.springer.com/article/10.1007/s00497-018-0324-7 Pollen tube guidance [2] http://jcs.biologists.org/content/131/2/jcs208447 Evolution and growth rate [3] http://www.jstor.org/stable/2830891?seq=1#page_scan_tab_contents How pollen tubes grow[4] https://www.sciencedirect.com/science/article/pii/S0012160606014035 pollen germination and tube growth[6] https://www.ncbi.nlm.nih.gov/pubmed/15012271 pollen tube growth promoting proteins[7] https://www.ncbi.nlm.nih.gov/pubmed/10792832

--Mamilln1 (talk) 15:53, 7 March 2018 (UTC)mamilln1

..sounds like a K12-article graded E. Rewrite pls!

Hi, I'm a current biology student at TCNJ and was thinking of improving this article with some more information for the Wikipedia world. Below are some sources I found that I think will enhance this article: 1. Discusses key molecules involved in pollen tube guidance. https://www.annualreviews.org/doi/pdf/10.1146/annurev-arplant-043014-115635 2. Significant effects of the genes WITs and WIPs on pollen nuclear migration. http://www.jstor.org/stable/pdf/42919119.pdf?refreqid=excelsior%3Ab63c939a33685e6087e870a203a632c2 3. Pollen tube growth as a function of the female gametophyte: synergids, FER, LRE, NTA, ZmES4, and PT reception. https://ac.els-cdn.com/S1369526611001191/1-s2.0-S1369526611001191-main.pdf?_tid=bf04dd4e-d663-4338-9d09-ad4076541353&acdnat=1520010386_8e7a9c7ed5f898089a52cd3f1e2eb3e9 4. Phosphatidic acid concentrations define distinct region in tip-growing pollen tubes; fluorescent images of PT growth shown. http://www.jstor.org/stable/pdf/newphytologist.203.2.483.pdf?refreqid=excelsior%3A30a1e8b7dd12495df0be3b409df691d0 5. Density-dependence in pollen tube growth stages. http://www.jstor.org/stable/pdf/2444302.pdf?refreqid=excelsior%3A3992caaf84fa47879f421e5f1944b3a9 6. Development of the PT of Zamia furfuracea and its evolutionary implications; intracelluar growth and outgrowth. http://www.jstor.org/stable/pdf/2445264.pdf?refreqid=excelsior%3Adac0c3ae97e6e65f866ad8a9f7e84fb8 7. Nitric oxide modulates the influx of extracellular Ca2+ and actin filament organization during cell wall construction in P. bungeana PTs. http://www.jstor.org/stable/pdf/30224812.pdf?refreqid=excelsior%3A6ccd07752c7f137ec4a5ccc9a8a6d8ea 8. Absence of the PT in carboniferous forms and the presence of the haustorial PT. http://www.jstor.org/stable/pdf/2435093.pdf?refreqid=excelsior%3A4dd50e45f960e3d04c1108aefa74fd7d 9. PT pathway, synchrony, and asynchrony. http://www.jstor.org/stable/pdf/3558245.pdf?refreqid=excelsior%3A02277dd283ac54cab5c6d40b0af7085a With these sources, I hope to improve upon the "Pollen tube guidance section" and create a new section regarding its evolution perhaps and origins, and then also include information about its growth and factors that affect this process. 10. PT growth rates and diversification of flowering plant reproductive cycles (angiosperms). http://www.jstor.org/stable/pdf/10.1086/665822.pdf?refreqid=excelsior%3Aecd1972521d4cca42cc1fa526331a110 IKontogiannis (talk) 17:47, 3 March 2018 (UTC)IKontogiannis

This entry is constantly being attacked in order to wrongly 'correct' two words. The attacker seems to be some kind of 'bot'. Is this the laughable state of Wikipedia? Do the high ranking mods of Wikipedia treat this resource as some kind of sick game, with COD like 'achievements' gained by number of edits, and dominance over articles? It is bad enough that historic and political entries exist here merely to reflect the goals of the USA and Israel. One might have guessed that the trolls that oversee the 'correctness' of said articles would, eventually, impact on the quality of neutral science and maths entries as well. — Preceding unsigned comment added by 94.173.204.250 (talk) 16:48, 30 June 2011 (UTC)

Wiki Education Foundation-supported course assignment

This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Mamilln1. Peer reviewers: Zdanows1.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 02:30, 18 January 2022 (UTC)

Wiki Education Foundation-supported course assignment

This article was the subject of a Wiki Education Foundation-supported course assignment, between 20 March 2019 and 30 April 2019. Further details are available on the course page. Student editor(s): Gj25lee, ASmitty10.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 06:53, 17 January 2022 (UTC)

Pollen tube and vegetative cell purpose

This article says "The vegetative cell then produces the pollen tube...". The Pollen article says "Each pollen grain contains vegetative (non-reproductive) cells (only a single cell in most flowering plants but several in other seed plants) and a generative (reproductive) cell containing two nuclei: a tube nucleus (that produces the pollen tube)...". Does the vegetative cell produce the pollen tube, or not?

This is probably quite a mess wherever it is treated. It was discovered only recently that the sperm cells are actually cells, with cell membranes, and in previous literature there were said to be three nuclei: the tube nucleus, and the two sperm nuclei within one cell, and that cell produced the pollen tube. Now it is clear that a cell division separates the tube cell and the generative cell. The generative cell then divides to make two sperm cells (in angiosperms). Sorry, no time just now to seek good citations, but they need to be authoritative references, probably from journal articles rather than from oldish textbooks ...

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