Difference between revisions of "User:Franziska Turck/Notebook/Cardamine pratensis project"

From OpenWetWare
Jump to: navigation, search
(Helfer gesucht)
Line 1: Line 1:
 +
<center>
 
[[Image:DSCF2158_Cp_Eiserfey_01_flower.JPG|750px]]
 
[[Image:DSCF2158_Cp_Eiserfey_01_flower.JPG|750px]]
<center>
 
 
{|{{table}} width="800"
 
{|{{table}} width="800"
 
|-
 
|-

Revision as of 10:51, 21 May 2013

DSCF2158 Cp Eiserfey 01 flower.JPG

<!-- sibboleth --><div id="lncal1" style="border:0px;"><div style="display:none;" id="id">lncal1</div><div style="display:none;" id="dtext">05/12/2013,05/19/2013</div><div style="display:none;" id="page">User:Franziska Turck/Notebook/Cardamine pratensis project</div><div style="display:none;" id="fmt">yyyy/MM/dd</div><div style="display:none;" id="css">OWWNB</div><div style="display:none;" id="month"></div><div style="display:none;" id="year"></div><div style="display:none;" id="readonly">Y</div></div>

<sitesearch>title=Search this Project</sitesearch>

Customize your entry pages <html><img src="/images/a/aa/Help.png" border="0" /></html>

Warum wir uns für Wiesenschaumkraut interessieren

  • Wiesenschaumkraut vermehrt sich, besonders an feuchten Standorten, lieber asexuel als durch Bestäubung der Blüte durch Pollen und anschliessender Samenbildung. Das kann es besonders gut, denn es bildet bei hoher Feuchtigkeit direkt auf den Blattspreiten neue Pflanzen aus. Dabei passiert dann aber leider oft folgende Panne: Da die Zellen der pflanzlichen Blätter sich oft nicht mehr teilen, aber trotzdem ihre DNA verdoppeln, habe die neuen Pflanzen, die sich direkt aus Blättern bilden, auch die Zahl ihrer Chromosomen verdoppelt. In der nächsten Runde sind es dann schon 4 mal mehr und so weiter bis der Prozess an eine natürliche Grenze stösst. Das Problem ist, dass die Pflanzen mit diesen völlig abstrus hohen Chromosomensätzen irgendwann gar nicht mehr anders können, als sich asexuell zu vermehren, denn bei der Samenbildung nach der Bestäubung muss die Anzahl der Chromosomen der beiden Partner schon irgendwie zusammenpassen.

Wir stellen uns folgende Fragen:

  • Wie kann die Art als solche überleben, wenn ältere Populationen durchgehend aus sterilen Individuen bestehen? Oder gibt es einen Mechanismus, der den Prozess der Genomverdoppelung reversibel macht?
  • Wenn Populationen schon lange bestehen und sich im Prinzip nur noch als blattgeborene Sprösslinge vermehren, treten dann Seneszenzerscheinungen innerhalb der Population auf?
  • Wie löschen Pflanzen die Erinnerung an Umwelteinflüsse ohne den Neustart bei der Samenbildung?
  • Wie schaffen es die Pflanzen, so einfach direkt aus dem Blatt Ableger zu bilden?

Helfer gesucht

  • Im Moment brauchen wir vor allen Dingen Hilfe beim Aufstöbern von Cardamine pratensis Populationen. Wer also gerne spazieren geht und dabei eine Auge auf die Natur werfen will, kann uns eine e-mail schreiben, um uns mitzuteilen, wo eine Population (z. Bsp. in einer Wiese) von Wiesenschaumkraut zu finden ist. Hilfreich wäre, wenn wir per Google maps oder GPS Handy auch noch den genauen Standort wissen könnten. Bilder sind natürlich auch schön, vor allem wenn sie zeigen, ob die Pflanzen Samen bilden oder eher steril sind. Muss aber nicht sein. Wer noch weiter gehen will, kann auch ausgereifte Samen in einem Umschlag an uns schicken. Das macht aber nur Sinn, wenn wir dann auch ganz genaue Angaben über den Standort bekommen.
  • Hier geht es zu einer Liste von Standorten, an denen wir bereits Pflanzen gesammelt haben

User:Franziska_Turck:Notebook/Cardamine_pratensis_project/Accessions

Was dann passiert

  • Als erten Schritt werden wir untersuchen, wieviel Chromosomen enzelne Pflanzen von verschiedeen Standorten haben. Dazu werden Wurzeln ganz junger Keimlinge angefärbt so dass man unter dem Mikroskop Chromosomen zählen kann. Dazu muss man Zellen finden, die sich gerade in der Zellteilung befinden, denn nur in diesen lassen sich Chromosomen sichtbar machen.
  • Außerdem werden wir einzelne Pflanzen von verschiedenen Standorten unter gleochen Bedingungen im Gewächshaus anziehen, um ein paar wichtige Parameter besser vergleichen zu können. Dazu gehören:
    • 1. Zeitpunkt der Blüte
    • 2. Form der Blätter und Blüten
    • 3. Können die Pflanzen durch Selbstbestäubung fruchtbare Samen bilden?
    • 4. Können die Pflanzen in feuchten Milieu Blattsprösslinge bilden?



Recent changes

19 October 2017

     18:43 

BME100 f2017:Group6 W1030 L4‎‎ (4 changes | history) . . (+1,447). . [Ray Gerard Regorgo‎ (4×)]

     

18:43

(cur | prev) . . (-196). . Ray Gerard Regorgo (talk | contribs) (OUR TEAM)

     

18:42

(cur | prev) . . (-3). . Ray Gerard Regorgo (talk | contribs) (OUR TEAM)

     

17:59

(cur | prev) . . (-3). . Ray Gerard Regorgo (talk | contribs) (Research and Development)

     

16:46

(cur | prev) . . (+1,649). . Ray Gerard Regorgo (talk | contribs) (Research and Development)

     15:43  User:Julie A. Fogarty‎ (diff | hist) . . (+46). . Julie A. Fogarty (talk | contribs) (Julie A. Fogarty)

     15:33 

Rich Lab:Funding‎‎ (2 changes | history) . . (-12). . [Isabel C. Morales‎ (2×)]

     

15:33

(cur | prev) . . (+12). . Isabel C. Morales (talk | contribs)

     

14:06

(cur | prev) . . (-24). . Isabel C. Morales (talk | contribs)

     14:58 

CONJ606:Materials‎‎ (2 changes | history) . . (+1,004). . [Weinjule‎; Peteral‎]

     

14:58

(cur | prev) . . (+685). . Peteral (talk | contribs) (Week 2: Me Myself and I-dentifiers, The Key To Immortality (Persistence))

     

12:15

(cur | prev) . . (+319). . Weinjule (talk | contribs) (Papers)

     14:52 

User:Peteral‎‎ (3 changes | history) . . (+1,264). . [Peteral‎ (3×)]

     

14:52

(cur | prev) . . (+185). . Peteral (talk | contribs) (Alec's Discussion Questions)

     

13:52

(cur | prev) . . (+351). . Peteral (talk | contribs) (Alec's Discussion Questions)

     

10:53

(cur | prev) . . (+728). . Peteral (talk | contribs) (Alec's Discussion Questions)

     14:13 

BME100 f2017:Group14 W0800 L4‎‎ (9 changes | history) . . (+9). . [Shae M. Diaz‎ (9×)]

     

14:13

(cur | prev) . . (+8). . Shae M. Diaz (talk | contribs) (Protocol)

     

14:12

(cur | prev) . . (-31). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

14:10

(cur | prev) . . (+31). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

14:09

(cur | prev) . . (+4). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

14:05

(cur | prev) . . (-1). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

14:05

(cur | prev) . . (+1). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

14:04

(cur | prev) . . (-1). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

13:55

(cur | prev) . . (+1). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

     

13:55

(cur | prev) . . (-3). . Shae M. Diaz (talk | contribs) (TEAM MEMBERS)

 m   14:12  Swartz‎ (diff | hist) . . (+61). . Marcus Rohovie (talk | contribs)
     14:10 (Move log) . . Marcus Rohovie (talk | contribs) moved page Swartz to Swartz:Main

     14:08 

(Upload log). .

[Thorntca‎; Shae M. Diaz‎ (3×)]

     

14:08

. . Shae M. Diaz (talk | contribs) uploaded File:100profileshae.JPG

     

14:01

. . Shae M. Diaz (talk | contribs) uploaded File:Shaediaz100.JPG

     

13:51

. . Shae M. Diaz (talk | contribs) uploaded File:BME100ShaeD.JPG

     

13:17

. . Thorntca (talk | contribs) uploaded File:2Dgel.png.jpg

     13:52 

Klenow Assembly Method: Seamless cloning‎‎ (3 changes | history) . . (+101). . [David M.D. Bailey‎ (3×)]

     

13:52

(cur | prev) . . (-5). . David M.D. Bailey (talk | contribs) (The Klenow Assembly Method (KAM) for the seamless cloning of overlapping double stranded DNA fragments: Very cheap alternative to the Gibson Assembly)

     

13:51

(cur | prev) . . (+1). . David M.D. Bailey (talk | contribs) (The Klenow Assembly Method (KAM) for the seamless cloning of overlapping double stranded DNA fragments: Very cheap alternative to the Gibson Assembly)

     

13:50

(cur | prev) . . (+105). . David M.D. Bailey (talk | contribs) (The Klenow Assembly Method (KAM) for the seamless cloning of overlapping double stranded DNA fragments: Very cheap alternative to the Gibson Assembly)

     13:22 

User:Thorntca‎‎ (8 changes | history) . . (+529). . [Thorntca‎ (8×)]

     

13:22

(cur | prev) . . (+145). . Thorntca (talk | contribs)

     

13:19

(cur | prev) . . (+17). . Thorntca (talk | contribs)

     

13:19

(cur | prev) . . (+4). . Thorntca (talk | contribs)

     

13:18

(cur | prev) . . (+30). . Thorntca (talk | contribs)

     

13:16

(cur | prev) . . (+417). . Thorntca (talk | contribs)

     

12:52

(cur | prev) . . (+12). . Thorntca (talk | contribs)

     

12:51

(cur | prev) . . (-5). . Thorntca (talk | contribs)

     

12:51

(cur | prev) . . (-91). . Thorntca (talk | contribs)

     12:27 

User:Madeline.churchill‎‎ (2 changes | history) . . (+302). . [Madeline.churchill‎ (2×)]

     

12:27

(cur | prev) . . (0). . Madeline.churchill (talk | contribs) (TZAP protein controls telomere Trimming process)

     

12:27

(cur | prev) . . (+302). . Madeline.churchill (talk | contribs) (Madeline Churchill's Discussion Page)

     09:17  BioMicroCenter:BIG meeting‎ (diff | hist) . . (+19). . George W Bell (talk | contribs) (2017-2018 academic year)
     07:06 (User creation log) . . User account Newfish (talk | contribs) was created by Yar (talk | contribs) and password was sent by email ‎

     04:10 

BioMicroCenter:BioinfoClasses‎‎ (3 changes | history) . . (+132). . [Charlie Whittaker‎ (3×)]

     

04:10

(cur | prev) . . (+9). . Charlie Whittaker (talk | contribs) (Teaching Schedule)

     

04:09

(cur | prev) . . (0). . Charlie Whittaker (talk | contribs) (Teaching Schedule)

     

04:08

(cur | prev) . . (+123). . Charlie Whittaker (talk | contribs) (Teaching Schedule)

     03:36  User:Timothee Flutre‎ (diff | hist) . . (+146). . Timothee Flutre (talk | contribs) (add contrib breedR and SO)

 m   02:27 

How to write a research paper‎‎ (2 changes | history) . . (+91). . [Formand‎ (2×)]

 m   

02:27

(cur | prev) . . (-1). . Formand (talk | contribs) (External links)

 m   

02:24

(cur | prev) . . (+92). . Formand (talk | contribs) (External links)

18 October 2017

     19:09  BME100 f2017:Group10 W0800 L4‎ (diff | hist) . . (+1). . Osvaldo J Pagan (talk | contribs)
     15:56  BME100 f2017:Group8 W1030 L4‎ (diff | hist) . . (+409). . Jennifer L. Brodsky (talk | contribs) (Research and Development)