Talk:Lactuca serriola

There is no picture of Lactuca Serriola. There is a picture on the Lactuca page it would be helpful if it was here too.

I agree. I've copied over the image from the Lactuca page into the taxa box.Silverthorn 14:47, 11 June 2006 (UTC)

The picture of the plant with more ovate leaves is obviously not Lactuca serriola, which has more lobed leaves. --Bsbray (talk) 20:32, 8 June 2015 (UTC)

No, they are bang on for the species. Unlobed leaves are more common. Plantsurfer 20:41, 8 June 2015 (UTC)

Article discusses plant resistance very thoroughly. The discussion of molecular markers and specific genes which confer resistance depending on isolates was very informative. Additional information about the inheritance of these traits for both resistance and virulence would be helpful in understand how they have evolved. I found an article which contains come of this information and seemed helpful if any further discussion of the gene linkage groups was to be added: http://link.springer.com/article/10.1007/BF00226989#page-1. I used the article to add some additional information, but I think more could be taken from it by someone who has done more in depth research on this species. Article is also very easy to read and comprehend. Salenrs (talk) —Preceding undated comment added 02:40, 26 October 2015 (UTC)

Additional References

I have listed below the four references I am proposing for plant pathogen resistance in Lactuca serriola to mildew.

1) Beharav, A., Lewinsohn, D., Lebeda A., Nevo, E. 2006. New wild Lactuca genetic resources with resistance against Bremia lactucae. Genetic Resources and Crop Evolution 53: 467–474.

2) Farrara, B. F., Ilot, T. W., Michelmore, R. W. 1987. Genetic analysis of factors for resistance to downy mildew Bremia lactucae in species of lettuce Lactuca sativa and L. serriola. Plant Pathology. 36: 499-514.

3) Lebeda A., Sedlářová M., Petřivalský M., Prokopová J. 2008. Diversity of defence mechanisms in plant–oomycete interactions: a case study of Lactuca spp. and Bremia lactucae. 2008. European Journal of Plant Pathology. 122: 71-89.

4) Sicard, D., Woo, S. S., Arroyo-Garcia, R., Ochoa, O., Nguyen, D., Korol, A., Nevo, E., Michelmore, R. 1999. Molecular diversity at the major cluster of disease resistance genes in cultivated and wild Lactuca spp. Theoretical and Applied Genetics. 99: 405-418.

Evolution43 (talk) 20:54, 24 September 2015 (UTC)

Hello I am thinking of adding something to your page about Lactuca serriola. Hello evolution43,

I really like this article. I just have a few comments. Your research is very effective in explaining the pathogen resistance in Lactuca serriola. Also your sources are very solid throughout and relate to your topic very well. From here, I think it would be effective to just explain a few of these statements in more detail. For example, I think you could do a bit more explaining on the Dm genes with more specifics. People who read might not fully understand if they do not have a science background. This could also further develop some of your argument. Also, possibly explain in a little more depth about the B. Lactucae. Once again this could further the readers understanding of your article. You give several examples about L. serriola but not enough on B. Lactucae. This article seems very researched and well put together. Nice job, looking forward to reading more. Slu 2018 (talk) 03:06, 26 October 2015 (UTC) Slu 2018 (talk) 03:06, 26 October 2015 (UTC)SLU_2018 25 October 2015 — Preceding unsigned comment added by Slu 2018 (talk • contribs) 03:01, 26 October 2015 (UTC)

I have revised the section on Pathogen Resistance by adding citations and making several clarifications of vague statements. Most of these clarifications specify whether I am referencing genes in L. serriola or B. lactucae, as suggested by both Slu 2018 and Evol&Glass (via email). I have also removed a few unnecessary statements. I added the information that the Dm genes show dominant inheritance as well as a brief explanation of linkage groups in response to Salenrs’s suggestions. The explanation on linkage groups is a very broad overview of information learned in class. Lastly, I feel that a more in-depth discussion and examples of B. lactucae, as suggested by Slu 2018, are more appropriate for the Wikipedia page on Bremia lactucae. In order to preserve this organization, I have included a link in the section of Pathogen Resistance that will take the user to the Wikipedia page on B. lactucae if more information on the pathogen is desired. Evolution43 (talk) 05:20, 9 November 2015 (UTC)

Hello Evolution43

First of all, I think it is very good. You have great information that was presented in very clear sentences. To me, organization of the section, relevance of the information, citations of sources, and spelling and grammar were all good. It would be better if you could mention or add some evolutionary outcomes or applications to your section. Overall, I really enjoyed reading this part and thank you for your hard work.

Random6251 (talk) 04:21, 16 November 2015 (UTC)

I feel like the pathogen resistance section could be either split into more sections or made more concise. Right now I think it is a little scattered and not as organized as it could be. You have referenced 15 twice, but maybe you could combine the first two sentences and just reference it once? Same thing for the next two sentences (Reference 16). I would make this "Resistance to B. lactucae in L. serriola is characterized by Dm genes, or single dominant genes.[16] Nine of the dominant genes that confer resistance are Dml, Dm, Dm3, Dm6, Dml4, Dml5, DmlO, Dm5/8, Dm10, Dm4, Dm7, Dm11, and Dm13.[15] These genes are mapped in four linkage groups, so the genes within each group will be more likely to be inherited together.[15] L. serriola and B. lactucae have a gene-for-gene relationship,[17] meaning that each resistance gene in the plant is associated with a specific gene in the pathogen, with avirulence being dominant to virulence.[15] The possible combinations of these Dm genes can provide the plant with resistance to multiple strains of Bremia lactucae.[15] " its own paragraph, and just organize better- this section is just not as clear as it could be- especially since you have such great information. I would separate the genetic diversity section as well. Like I said, you don't have to make three different huge sections, but maybe under the overarching heading of "Pathogen Resistance" you could have subheadings. Cheesecakefantasy (talk) 15:50, 24 November 2015 (UTC)

"Testing for the presence of new resistance factors is conducted by screening samples of L. serriola with various isolates of B. lactucae" I would either go into more detail about this or remove it all together. But otherwise, great information!! Cheesecakefantasy (talk) 15:49, 24 November 2015 (UTC)

In response to Cheesecakefantasy, sources are referenced more than once according to instructions, “cite the articles that support your statements at the end of the sentence, NOT the end of the paragraph.” I have split up the paragraph as advised, but I am not sure what is meant by “just organize better.” More specific suggestions would be helpful. No changes were made in response to user Random6251. I have already discussed the evolutionary application for lettuce breeding. Evolution43 (talk) 01:29, 9 December 2015 (UTC)