Difference between revisions of "Evolution of Green Plants"

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[[Image:EquisetumSperm.png|thumb|right|''Scanning electron micrograph of Equisetum sperm cells. Image by K. S. Renzaglia (http://www.science.siu.edu/landplants/Sphenophyta/sphenophyta.html).'']]
 
[[Image:EquisetumSperm.png|thumb|right|''Scanning electron micrograph of Equisetum sperm cells. Image by K. S. Renzaglia (http://www.science.siu.edu/landplants/Sphenophyta/sphenophyta.html).'']]
<span style="font-size: x-large">Spring 2010</span><br><br>
+
<span style="font-size: x-large">Spring 2014</span><br><br>
 
<span style="font-size: x-large">EEB 3220 </span> (3 cr)<br><br>
 
<span style="font-size: x-large">EEB 3220 </span> (3 cr)<br><br>
 
<span style="font-size: x-large">EEB 3220W </span> (W, 4 cr)<br><br>
 
<span style="font-size: x-large">EEB 3220W </span> (W, 4 cr)<br><br>
 
<span style="font-size: x-large">EEB 5220 </span> (graduate, 3 cr)<br><br>
 
<span style="font-size: x-large">EEB 5220 </span> (graduate, 3 cr)<br><br>
 +
''Lectures:'' T/TH 12:30-13:45 in Torrey Life Sciences (TLS) 301<br/>
  
<span style="font-size: large">Spring 2010</span>
+
<font color="#FF3300"> Most course materials will be available on HuskyCT (beginning sometime Tuesday, Jan. 21, 2014).</font><br/><br/>
''Lectures:'' T/TH 12:30-13:45 in TLS 301<br/>
+
''Labs:'' T 14:00-16:50 in TLS 115<br/>
+
  
{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Syllabus2010.pdf}} Download a general course Syllabus (requires password)<br/>
 
 
{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/EEB3220W2010.pdf}} Download EEB3220W instructions (requires password)<br/><br/>
 
[http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Evolution_of_Green_Plants_Lab To lab home page.]<br/><br/>
 
 
__NOEDITSECTION__
 
__NOEDITSECTION__
 
== Instructor Contact Information ==
 
== Instructor Contact Information ==
<span style="font-size: large">[http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Louise_A._Lewis Louise A. Lewis] Associate Professor<br/></span>
+
<span style="font-size: large">[http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Louise_A._Lewis Louise A. Lewis] Professor<br/></span>
 
[http://hydrodictyon.eeb.uconn.edu/eebwww/ Department of Ecology and Evolutionary Biology]<br/>
 
[http://hydrodictyon.eeb.uconn.edu/eebwww/ Department of Ecology and Evolutionary Biology]<br/>
 
office: 200 Pharmacy/Biology Building<br/>
 
office: 200 Pharmacy/Biology Building<br/>
Line 21: Line 16:
 
email: [mailto:louise.lewis@uconn.edu louise.lewis@uconn.edu]<br/><br/>
 
email: [mailto:louise.lewis@uconn.edu louise.lewis@uconn.edu]<br/><br/>
  
<span style="font-size: large">[http://hydrodictyon.eeb.uconn.edu/eebwww/people/person.php?uniqueID=goffinet Bernard Goffinet] Associate Professor<br/></span>
+
<span style="font-size: large">[http://hydrodictyon.eeb.uconn.edu/eebwww/people/person.php?uniqueID=goffinet Bernard Goffinet] Professor<br/></span>
 
[http://hydrodictyon.eeb.uconn.edu/eebwww/ Department of Ecology and Evolutionary Biology]<br/>
 
[http://hydrodictyon.eeb.uconn.edu/eebwww/ Department of Ecology and Evolutionary Biology]<br/>
 
office: 300 Pharmacy/Biology Building<br/>
 
office: 300 Pharmacy/Biology Building<br/>
 
voice: +1 860-486-5290<br/>
 
voice: +1 860-486-5290<br/>
 
email: [mailto:bernard.goffinet@uconn.edu bernard.goffinet@uconn.edu]<br/><br/>
 
email: [mailto:bernard.goffinet@uconn.edu bernard.goffinet@uconn.edu]<br/><br/>
 +
Where are our offices? BioPharmacy building, N end of building touching TLS, around the corner from elevator (Dr. Lewis is on the 2nd floor and Dr. Goffinet on the 3rd). If you come from TLS and go up the stairs, enter floor and take hallway on your left.
 +
<br>
 +
== Syllabus ==
 +
See the HuskyCT site for these.<br>
  
== TA Contact Information ==
+
==Textbook and readings==
<span style="font-size: large">[http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Juan_Carlos_Villarreal Juan Carlos Villarreal A.] Lab Instructor<br/></span>
+
There is no formal textbook for this course. We will be using newly published books (available as e-books from the Uconn library) as well journal articles.
[http://hydrodictyon.eeb.uconn.edu/eebwww/ Department of Ecology and Evolutionary Biology]<br/>
+
<B> The assigned reading material is considered required reading.</B>
office: 312 Pharmacy/Biology Building<br/>
+
voice: +1 860-486-6306<br/>
+
email: [mailto:jcarlos.villarreal@gmail.com jcarlos.villarreal@gmail.com]<br/><br/>
+
'''Office hours''': Wednesday 12-1, BIOPHARM 312 or feel free to email in advance<br/>
+
  
==Textbook and readings==
+
==<font color="#FF3300">Announcements</font>==
There is no official text book. Instead, you will be assigned readings from the primary literature to go with the lectures.  <B> This material is considered part of the lecture material and must be read for the midterm and exam </B>.
+
  
==<font color="#FF3300">Announcements (NEW ONE ADDED APRIL 7)</font>==
 
 
* Watch This: [http://www.eurekalert.org/pub_releases/2010-02/wuis-mhc020410.php Moss helps chart the conquest of land by plants]<br/>
 
* Watch This: [http://www.eurekalert.org/pub_releases/2010-02/wuis-mhc020410.php Moss helps chart the conquest of land by plants]<br/>
 
* Learn more about the Rhynie Chert at http://www.abdn.ac.uk/rhynie/intro.htm</br>
 
* Learn more about the Rhynie Chert at http://www.abdn.ac.uk/rhynie/intro.htm</br>
* Reading for Thursday April 1 class. This paper (:{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Strotheretal2004SM.pdf}} Strotheretal2004SM.pdf) will be discussed in class, in preparation of Dr. Strother's seminar which you have to attend and summarize. You should read this for Thursday and come prepared to ask questions and talk about it. After you have read through it once, go over the abstract and assess whether you got the main points.</br>
 
* I have made a pdf of several figures from a paper by Hemsley that may help you understand the difference between monads, dyads, etc... See :{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Stortherlecturespore.pdf}} Hemsley spore figures.pdf
 
* I (BG) have posted two papers pertaining to the last two lectures. The short paper by Taylor provides a summary (dating from 1982 but still valid) on the reproductive biology of early land plants. The paper of Soltis is longer but you only must read 3-9 and 16-20. Make sure you read both of these papers for the final (I have not and will not add additional papers for the other lectures I covered).
 
==Schedule (updated April 5)==
 
  
Notes: downloads require password;  best viewed in Adobe Reader (some problems with the MAC "Preview" program).
+
==Schedule==
 +
 
 +
Note: this is a tentative schedule. See the HuskyCT site for the latest.
  
 
{| border="1" cellpadding="2"  
 
{| border="1" cellpadding="2"  
 
!style="background:#00CC66;" width="68" align="center"|Date
 
!style="background:#00CC66;" width="68" align="center"|Date
 
!style="background:#00CC99;" width="400"|Topic
 
!style="background:#00CC99;" width="400"|Topic
!style="background:#00CCCC;" width="300"|Assignment
+
!style="background:#00CCCC;" width="300"|Reading / Assignment
 
!style="background:#00CCFF;" width="40"|Prof.
 
!style="background:#00CCFF;" width="40"|Prof.
 
|-  
 
|-  
| Tu 19 Jan || Introduction: "plants?", "photosynthesis", "emerging from the water", ...<br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Lecture1SM.pdf}} Lecture1.pdf      || Reading:  <br/>{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Assignment1lifecycle.doc}} <B>Assignment 1: Life cycles (due Jan. 26)</B>  || BG
 
|-
 
| Th 21 Jan || The context for the evolution and subsequent diversification of land plants <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/lecture2SM.pdf}}Lecture2.pdf  || Reading: <br/>  || BG 
 
 
|-  
 
|-  
| Tu 26 Jan || Life cycles of green plants, meiosis, mitosis; Phylogenetic trees <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Jan26.pdf}} Jan26  || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/McCourtTREE.pdf}}McCourt et al. 2004 <b> <br/>Assignment 1 due </b>  || LL
+
|T  1/21/14    || Course overview & Plants: their importance in past and present ecosystems    ||           ||  Lewis
 
|-  
 
|-  
| Th 28 Jan || Phylogenetic trees  (continued) <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Jan28.pdf}} Jan28                              || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/BaumOffner2008.pdf}} Baum & Offner 2008  || LL
+
|Th 1/23/14   || Macroevolutionary tree of green plants, and ancestors to land plants ||           ||  Lewis
|-    
+
| Tu 02 Feb || Aquatic ancestors to embryophytes <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb02.pdf}} Feb02  <br/>    {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb02modifiedslides.pdf}} Feb02b (2 modified slides)                      || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Graham2000.pdf}} Graham et al. 2000 <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Assignment2.S2010.pdf}} <B>Assignment 2: phylogenetic trees (due Feb. 9) </B> <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/groupmembershipAssignment2.pdf}} Assignment 2 groups|| LL
+
 
|-  
 
|-  
| Th 04 Feb || Bryophytes, Ferns and other seed-free vascular plants<br/>{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb04.pdf}} Feb04  || Reading: <br/>    || LL
+
|T  1/28/14    || Fossilization                  ||             || Goffinet
 
|-  
 
|-  
| Tu 09 Feb || Ferns and Gymnosperms <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb09.pdf}} Feb09                                        || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Pryeretal2001.pdf}} Pryer et al. 2001 <br/> <b>Assignment 2 due</b>  || LL
+
|Th 1/30/14  ||  Partners in the colonization of land, I          ||           || Goffinet
 
|-  
 
|-  
| Th 11 Feb || Angiosperms   <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb11.pdf}}  Feb11              || Reading: <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Pennisi2009.pdf}} Pennisi 2009 || LL
+
|T  2/4/14      ||  Partners in the colonization of land, II    ||             ||  Lewis
 
|-  
 
|-  
| Tu 16 Feb || Developmental tool kit: genome evolution <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb16post.pdf}} Feb16post.pdf                    || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Bowmanetal.pdf}} Bowman et al.pdf. <P> For graduate students only: read intro and discussion at least of {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Floyd%26Bowman.pdf}} Floyd&Bowman.pdf || BG
+
|Th 2/6/14    || Challenges to the transition to land        ||             || Lewis
 
|-  
 
|-  
| Th 18 Feb || Genome reduction <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb18.pdf}} Feb18 <br/><B>note: EEB seminar 4 PM - Doug Soltis </B>  || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/bungard2004.pdf}} Bungard 2004 <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/BockTimmis2008.pdf}} Bock & Timmis 2008 (optional) <br/> <B>Assignment 3: seminar today </B> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Assignment3.spring2010.pdf}} Assignment 3 guidelines  || LL
+
|T  2/11/14    ||   Interpreting phylogenetic trees              ||             || Lewis
 
|-  
 
|-  
| Tu 23 Feb || Desiccation tolerance  <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Feb23.pdf}} Feb.23                                    || Reading: <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Alpert2005.pdf}} Alpert 2005 <br/> <b>Assignment 3 due (Soltis  summary)</b>  || LL
+
|Th 2/13/14  || Early land plants: advances and challenges to diversification on land, I  ||     ||  Goffinet
 
|-  
 
|-  
| Th 25 Feb || Plant:fungal interactions <br/>{{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/12Feb25SM.pdf}} 12Feb25SM.pdf                                  || Reading: <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Selosse%26LeTacon.pdf}} Selosse&LeTacon.pdf <br/> For EEB5220 only: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Selosseetal2006.pdf}} Selosseetal2006.pdf  || BG
+
|T 2/18/14    || Early land plants: advances and challenges to diversification on land, II    ||     || Goffinet
 +
|- 
 +
|Th 2/20/14 ||  Photosynthesis in earliest land plants        ||            ||  Lewis
 +
|- 
 +
|T 2/25/14  || Evolution of the vascular body, I                  ||            || Goffinet
 
|-  
 
|-  
| Tu 02 Mar || Fossilization                                                || Reading: <br/>    || BG
+
|Th 2/27/14  || Evolution of the vascular body, II                ||           || Goffinet
 
|-  
 
|-  
| Th 04 Mar || Fossil evidence for the transition to land [http://dropbox.uconn.edu/dropbox?n=14March4post.pdf&p=WG9ez3Bxnr6Di1oFI  to lecture notes]          || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Wellman%26Gray.pdf}} Wellman&Gray.pdf <br/>    || BG
+
|T 3/4/14    || Evolution of photosynthetic organs              ||              || Goffinet
 
|-  
 
|-  
| Tu 09 Mar || SPRING  BREAK
+
|Th 3/6/14  || Evolution of stomata and cuticle                  ||              ||  Lewis
 
|-  
 
|-  
| Th 11 Mar || SPRING  BREAK
+
|T 3/11/14  || Physiological desiccation tolerance    ||    || Lewis
 
|-  
 
|-  
| Tu 16 Mar || <b>Midterm Exam (100 points) </b> (through 04 March material)  ||     ||
+
|Th 3/13/14 || Midterm exam (through lectures 1-13  ||   ||
 
|-  
 
|-  
| Th 18 Mar || Polysporangiophytes: origin of branching and distribution of sporangia {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/18March30PostSM.pdf}} 18March30.pdf    || Reading: <br/> || BG
+
|T 3/18/14  ||  Spring Break
 
|-  
 
|-  
| Tu 23 Mar || Origin and evolution of water conducting cells [http://dropbox.uconn.edu/dropbox?n=16March23cla.pdf&p=WyebmKCsBeaEgk3kK  to lecture notes]                          || Reading: <br/>    || BG
+
|Th 3/20/14 || Spring Break
 
|-  
 
|-  
| Th 25 Mar || Early diversification of Tracheophytes  [http://dropbox.uconn.edu/dropbox?n=18March25class.pdf&p=W4J8SnuTrnFc6jOsA to lecture notes]                                              || Reading: <br/>    || BG
+
|T 3/25/14 || Endospory and heterospory    ||          || Lewis
 
|-  
 
|-  
| Tu 30 Mar || Origin of the seed and early diversification of seed plants [http://dropbox.uconn.edu/dropbox?n=19March30.pdf&p=W79Fmw90V4JRQiMby to lecture notes ]                                                || Reading:  {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Taylor1982.pdf}} Taylor1982.pdf <br/><br/>    || BG
+
|Th 3/27/14 || Origin of seed plants             ||           || Lewis
 
|-  
 
|-  
| Th 01 Apr || EEB seminar: Paul Strother / Q&A on his paper                || Reading:<B>Assignment 4: seminar today </B>  <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/assignment4Spring2010.pdf}} Assignment 4 guidelines  || BG
+
|T 4/1/14 || Origin of flowers    ||             || Goffinet
 
|-  
 
|-  
| Tu 06 Apr || Origin of the flower and early diversification of flowering plants      [http://dropbox.uconn.edu/dropbox?n=20April6.pdf&p=Wxu9ly0m4993lrFel to lecture notes]                                    || <b> Assignment 4 due (Strother summary) </b> </br> Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/earlyangiosperm.pdf}} Soltis et al.pdf || BG
+
|Th 4/3/14 || A fundamental developmental toolkit of plants      ||             ||   Goffinet
 
|-  
 
|-  
| Th 08 Apr || READ {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/SchneiderPryer2004.pdf}} Schneideretal2004.pdf  for class <br/> {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/Schneideretal2004SupplementaryInfo.doc}} Supplementary Info <br/> EEB seminar @ 4 PM: Kathleen Pryer      || Reading: <br/> <B>Assignment 5: seminar today </B>  ||  
+
|T 4/8/14 || Genome evolution in land plants: introduction    ||         || Goffinet
 
|-  
 
|-  
| Tu 13 Apr || Photosynthesis in an oxygen-rich world                        || Reading: {{pdf|http://hydrodictyon.eeb.uconn.edu/courses/greenplants/restricted/SageC4.pdf}} Sage.pdf <br/>  || LL
+
|Th 4/10/14 || Diversification of angiosperms    ||   || Lewis
 
|-  
 
|-  
| Th 15 Apr || Hormones                                                      || Reading: <br/> <b>Assignment 5 due (Pryer summary)</b> || LL
+
|T 4/15/14 || Diversification of grasses and photosynthetic innovations    ||     || Lewis
 
|-  
 
|-  
| Tu 20 Apr || Phylogeny of land plants: character sources, inferences, conflicts    || Reading: <br/>    || LL
+
|Th 4/17/14 || Genome evolution in land plants             ||     Attend EEB seminar @ 4PM by Wickett    || Goffinet
 
|-  
 
|-  
| Th 22 Apr || Graduate student presentations                                ||       ||
+
|T 4/22/14  || Organellar genome evolution                    ||         || Goffinet
 
|-  
 
|-  
| Tu 27 Apr || Graduate student presentations                                ||       ||  
+
|Th 4/24/14  || The rise and fall of land plant lineages: patterns in the diversification of land plants    ||       ||   Goffinet
 
|-  
 
|-  
| Th 29 Apr || Time tree of evolution of land plants, wrap up                || Reading: <br/>    || BG
+
|T 4/29/14  || Grad presentations || ||
 
|-  
 
|-  
| ?? May || Final Exam (100 points on new material, 25 points comprehensive. Will include questions about the graduate student presentations.) || ||
+
|Th 5/1/14  || Grad presentations ||   ||
 
|}
 
|}
  

Latest revision as of 19:46, 21 January 2014

Scanning electron micrograph of Equisetum sperm cells. Image by K. S. Renzaglia (http://www.science.siu.edu/landplants/Sphenophyta/sphenophyta.html).

Spring 2014

EEB 3220 (3 cr)

EEB 3220W (W, 4 cr)

EEB 5220 (graduate, 3 cr)

Lectures: T/TH 12:30-13:45 in Torrey Life Sciences (TLS) 301

Most course materials will be available on HuskyCT (beginning sometime Tuesday, Jan. 21, 2014).


Instructor Contact Information

Louise A. Lewis Professor
Department of Ecology and Evolutionary Biology
office: 200 Pharmacy/Biology Building
voice: +1 860-486-6723
email: louise.lewis@uconn.edu

Bernard Goffinet Professor
Department of Ecology and Evolutionary Biology
office: 300 Pharmacy/Biology Building
voice: +1 860-486-5290
email: bernard.goffinet@uconn.edu

Where are our offices? BioPharmacy building, N end of building touching TLS, around the corner from elevator (Dr. Lewis is on the 2nd floor and Dr. Goffinet on the 3rd). If you come from TLS and go up the stairs, enter floor and take hallway on your left.

Syllabus

See the HuskyCT site for these.

Textbook and readings

There is no formal textbook for this course. We will be using newly published books (available as e-books from the Uconn library) as well journal articles. The assigned reading material is considered required reading.

Announcements

Schedule

Note: this is a tentative schedule. See the HuskyCT site for the latest.

Date Topic Reading / Assignment Prof.
T 1/21/14 Course overview & Plants: their importance in past and present ecosystems Lewis
Th 1/23/14 Macroevolutionary tree of green plants, and ancestors to land plants Lewis
T 1/28/14 Fossilization Goffinet
Th 1/30/14 Partners in the colonization of land, I Goffinet
T 2/4/14 Partners in the colonization of land, II Lewis
Th 2/6/14 Challenges to the transition to land Lewis
T 2/11/14 Interpreting phylogenetic trees Lewis
Th 2/13/14 Early land plants: advances and challenges to diversification on land, I Goffinet
T 2/18/14 Early land plants: advances and challenges to diversification on land, II Goffinet
Th 2/20/14 Photosynthesis in earliest land plants Lewis
T 2/25/14 Evolution of the vascular body, I Goffinet
Th 2/27/14 Evolution of the vascular body, II Goffinet
T 3/4/14 Evolution of photosynthetic organs Goffinet
Th 3/6/14 Evolution of stomata and cuticle Lewis
T 3/11/14 Physiological desiccation tolerance Lewis
Th 3/13/14 Midterm exam (through lectures 1-13
T 3/18/14 Spring Break
Th 3/20/14 Spring Break
T 3/25/14 Endospory and heterospory Lewis
Th 3/27/14 Origin of seed plants Lewis
T 4/1/14 Origin of flowers Goffinet
Th 4/3/14 A fundamental developmental toolkit of plants Goffinet
T 4/8/14 Genome evolution in land plants: introduction Goffinet
Th 4/10/14 Diversification of angiosperms Lewis
T 4/15/14 Diversification of grasses and photosynthetic innovations Lewis
Th 4/17/14 Genome evolution in land plants Attend EEB seminar @ 4PM by Wickett Goffinet
T 4/22/14 Organellar genome evolution Goffinet
Th 4/24/14 The rise and fall of land plant lineages: patterns in the diversification of land plants Goffinet
T 4/29/14 Grad presentations
Th 5/1/14 Grad presentations

Links

"Whitish smoke in the movie are small droplets containing smreps (deliberate misspelling of word for male gametes). The smreps in the droplets are still un-motile. When touch the water, they begin to swim. In our experiments, misting with water is trigger of the explosion. If antheridia were mature, the explosion begin within few minutes. The event continued about for 10 min. Intense light for video recording also seems to accelerate the phenomenon. Each antheridia is deeply sunk in a cavity of antheridiophore and there is a very small pore on the top of each cavity. Swollen cells of surrounding tissue might cause the pressure force. Cavers (1903) and Muggoch & Walton (1942) also discussed about the mechanism, but, I think no one examined about the detail mechanism of the phenomenon. In Hiroshima, the season of mreps dispersal is Spring (April to May). In our field observation, we detected many airborne smreps in the sunny day after rain shower. I do not have detail data about how many species of liverworts have airborne mreps. At least, Asian species of Conocephalum (C. japonicum) do in the same manner." M. Shimamura

Shimamura, M., Yamaguchi, T. & Deguchi, H. 2008. Airborne sperm of Conocephalum conicum (Conocephalaceae). J. Plant Res. 121: 69-71. http://www.springerlink.com/content/fl2105h6428366m3/