Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.
Corn: Diversity and Origins
Jeffrey Ross-Ibarra
@jrossibarra • www.rilab.org
University of California, Davis
Photo: Jason ...
tassel (male)
ear (female)
Photo: U. Nebraska-Lincoln
corn
(maize)
tassel (male)
ear (female)
Photo: OllieMartin
Photo: U. Nebraska-Lincoln
corn
(maize)
tassel (male)
ear (female)
Photo: OllieMartin
Photo: U. Nebraska-Lincoln
Photo: © HD WIlson
corn
(maize)
Photo: Rosana Prada
Photo: https://www.flickr.com/photos/croptrust/
Photo: https://www.flickr.com/photos/dandelion-and-burdock/
A
C
T
G
Photo: Michael Neugebauer
1.2% DNA difference
Photo: USDA
Photo: Michael Neugebauer
1.2% DNA difference1.6% DNA difference
Photo: USDA
Original DNA
Mutation
Original DNA
Original DNA Transposon
Barbara McClintock
1902-1992
Original DNA Transposon
Barbara McClintock
1902-1992
Original DNA Transposon
Photo: Damon Lisch
purple:
no transposon
Photo: Damon Lisch
purple:
no transposon
yellow:
transposon
inserted
Photo: Damon Lisch
purple:
no transposon
yellow:
transposon
inserted
spots:
transposon jumps
Photo: Damon Lisch
purple:
no transposon
yellow:
transposon
inserted
spots:
transposon jumps
Photo: Damon Lisch
no transposon
Photos: Cold Spring Harbor Laboratory Press
transposon
A
T
G
A
C
T
A
T
G
G
C
T
A
C
G
G
C
T
A
T
G
G
C
T
A
T
G
A
C
T
A
T
G
G
C
T
A
C
G
G
C
T
A
T
G
G
C
T
A
T
G
A
C
T
A
T
G
G
C
T
A
C
G
G
C
T
A
T
G
G
C
T
A
T
G
A
C
T
A
T
G
G
C
T
A
C
G
G
C
T
A
T
G
G
C
T
A
T
G
A
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
T
G
G
C
T
A
C
G
A
C
T
A
T
G
A
C
T
A
C
G
A
C
T
A
C
G
G
C
T
A
C
G
G
C
T
A
T
G
G
C
T
traditional (landrace)
A
C
G
G
C
T
A
C
G
G
C
T
modern industrial corn
A
C
G
G
C
T
A
C
G
G
C
T
A
C
G
G
C
T
A
C
G
G
C
T
modern industrial corn
A
C
G
G
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
T
G
A
C
T
Modern Industrial Corn
A
C
G
G
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
T
G
A
C
T
A
C
G
G
C
T
A
T
G
A
C
T
Modern Industrial Corn
A
C
G
G
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
T
G
A
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
C
G
G
C
T
A
T
G
A
C
T
Modern Industrial Corn
A
C
G
G
C
T
A
C
G
G
C
T
A
T
G
A
C
T
A
T
G
A
C
T
A
C
G
G
C
T
A
T
G
A
C
T
Modern Industrial Corn
Beadle 1979 Field Museum of Natural History Bulletin
maize or
F1
teosinte
Zea mays ssp. parviglumis
maize
Zea mays ssp. ma...
maize or
F1
teosinte
Zea mays ssp. parviglumis
maize
Zea mays ssp. mays
teosinte
parviglumis
teosinte
mexicana
modern
corn...
teosinte
parviglumis
teosinte
mexicana
modern
corn
Matsuoka 2002 PNAS
Photos: Matt Hufford, Brandon Gaut, John Doebley
teosinte
teosinte
modern
corn
modern
corn
teosinte
modern
corn
teosinte
modern
corn
reconstructed
ancestral corn
01
010
0010
01011
01111
10
modern
corn
reconstructed
ancestral corn
01
010
0010
01011
01111
10
Highland
Route
Highland
Route
Pacific
Route
Photo: Moenkopi Legacy Inn & Suites
Highland
Route
Pacific
Route
Highland
Route
Pacific
Route
modern
Chapalote
modern
Palomero
Highland
Route
Pacific
Route
modern
Chapalote
modern
Palomero
Tularosa Cave
Highland
Route
Pacific
Route
3,000 yrs
modern
Chapalote
modern
Palomero
Highland
Route
Pacific
Route
3,000 yrs
modern
Chapalote
modern
Palomero
2,000 yrs 1,000 yrs
Highland
Route
Pacific
Route
3,000 yrs
modern
Chapalote
modern
Palomero
700 yrs2,000 yrs 1,000 yrs
01
010
0010
01011
01111
10
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"
Prochain SlideShare
Chargement dans…5
×

2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"

11 100 vues

Publié le

Public lecture at the San Francisco Exploratorium on corn. Part of their Science of Food series http://www.exploratorium.edu/press-office/press-releases/science-food-series-launches-exploratorium

Publié dans : Alimentation, Sciences
  • Nice !! Download 100 % Free Ebooks, PPts, Study Notes, Novels, etc @ https://www.ThesisScientist.com
       Répondre 
    Voulez-vous vraiment ?  Oui  Non
    Votre message apparaîtra ici
  • czy ktos wie gdzie jest uzywane w przemysle ,i pod jaka nazwa wystepuje
       Répondre 
    Voulez-vous vraiment ?  Oui  Non
    Votre message apparaîtra ici
  • mdphp
       Répondre 
    Voulez-vous vraiment ?  Oui  Non
    Votre message apparaîtra ici
  • Very Nice, If you want more good Presenations on same topic visit www.ThesisScientist.com, Its a wonderful website for latest Presentations and Research
       Répondre 
    Voulez-vous vraiment ?  Oui  Non
    Votre message apparaîtra ici
  • Today's "Diet" Foods Stress Your Body, Confuse Your Hormones, and Create Deadly Inflammation… Your Body Responds by HOLDING onto Fat! These Quick Metabolism-Resetting and Fat-Burning Recipes Are Really Hard To Find. When You Try These Fast Fat Burning Meals •••►►► http://FatBurnCook.blogspot.com/5 YOU Will: 1) Drop years of “trapped” fat while eating delicious real foods that take minutes to make. 2) Stop eating the toxic “diet” foods that are disrupting your hormones and fattening your body with excess inflammation. 3) Never count a single calorie every again – just enjoy your food… guilt-free! 4) Save time in the kitchen so you can get on with your life. 5) Have the simplest and most “done-for-you” meal plan and recipes so that you don’t have to ever worry about your next meal. 6) Feel great about yourself for being in full control and free of dieting rules and deprivation. AND MORE!
       Répondre 
    Voulez-vous vraiment ?  Oui  Non
    Votre message apparaîtra ici

2015 SF Exploratorium Lecture: "Corn: Diversity and Origins"

  1. 1. Corn: Diversity and Origins Jeffrey Ross-Ibarra @jrossibarra • www.rilab.org University of California, Davis Photo: Jason Wallace
  2. 2. tassel (male) ear (female) Photo: U. Nebraska-Lincoln corn (maize)
  3. 3. tassel (male) ear (female) Photo: OllieMartin Photo: U. Nebraska-Lincoln corn (maize)
  4. 4. tassel (male) ear (female) Photo: OllieMartin Photo: U. Nebraska-Lincoln Photo: © HD WIlson corn (maize)
  5. 5. Photo: Rosana Prada
  6. 6. Photo: https://www.flickr.com/photos/croptrust/
  7. 7. Photo: https://www.flickr.com/photos/dandelion-and-burdock/
  8. 8. A C T G
  9. 9. Photo: Michael Neugebauer 1.2% DNA difference Photo: USDA
  10. 10. Photo: Michael Neugebauer 1.2% DNA difference1.6% DNA difference Photo: USDA
  11. 11. Original DNA
  12. 12. Mutation Original DNA
  13. 13. Original DNA Transposon Barbara McClintock 1902-1992
  14. 14. Original DNA Transposon Barbara McClintock 1902-1992
  15. 15. Original DNA Transposon
  16. 16. Photo: Damon Lisch
  17. 17. purple: no transposon Photo: Damon Lisch
  18. 18. purple: no transposon yellow: transposon inserted Photo: Damon Lisch
  19. 19. purple: no transposon yellow: transposon inserted spots: transposon jumps Photo: Damon Lisch
  20. 20. purple: no transposon yellow: transposon inserted spots: transposon jumps Photo: Damon Lisch
  21. 21. no transposon Photos: Cold Spring Harbor Laboratory Press transposon
  22. 22. A T G A C T A T G G C T A C G G C T A T G G C T
  23. 23. A T G A C T A T G G C T A C G G C T A T G G C T
  24. 24. A T G A C T A T G G C T A C G G C T A T G G C T
  25. 25. A T G A C T A T G G C T A C G G C T A T G G C T A T G A C T A C G G C T
  26. 26. A T G A C T A T G G C T A C G A C T A T G A C T A C G A C T A C G G C T A C G G C T A T G G C T traditional (landrace)
  27. 27. A C G G C T A C G G C T modern industrial corn
  28. 28. A C G G C T A C G G C T A C G G C T A C G G C T modern industrial corn
  29. 29. A C G G C T A C G G C T A T G A C T A T G A C T Modern Industrial Corn
  30. 30. A C G G C T A C G G C T A T G A C T A T G A C T A C G G C T A T G A C T Modern Industrial Corn
  31. 31. A C G G C T A C G G C T A T G A C T A T G A C T A C G G C T A T G A C T A C G G C T A T G A C T Modern Industrial Corn
  32. 32. A C G G C T A C G G C T A T G A C T A T G A C T A C G G C T A T G A C T Modern Industrial Corn
  33. 33. Beadle 1979 Field Museum of Natural History Bulletin maize or F1 teosinte Zea mays ssp. parviglumis maize Zea mays ssp. mays George Beadle
  34. 34. maize or F1 teosinte Zea mays ssp. parviglumis maize Zea mays ssp. mays teosinte parviglumis teosinte mexicana modern corn Matsuoka 2002 PNAS
  35. 35. teosinte parviglumis teosinte mexicana modern corn Matsuoka 2002 PNAS
  36. 36. Photos: Matt Hufford, Brandon Gaut, John Doebley
  37. 37. teosinte teosinte modern corn
  38. 38. modern corn teosinte
  39. 39. modern corn teosinte
  40. 40. modern corn reconstructed ancestral corn 01 010 0010 01011 01111 10
  41. 41. modern corn reconstructed ancestral corn 01 010 0010 01011 01111 10
  42. 42. Highland Route
  43. 43. Highland Route Pacific Route
  44. 44. Photo: Moenkopi Legacy Inn & Suites
  45. 45. Highland Route Pacific Route
  46. 46. Highland Route Pacific Route modern Chapalote modern Palomero
  47. 47. Highland Route Pacific Route modern Chapalote modern Palomero Tularosa Cave
  48. 48. Highland Route Pacific Route 3,000 yrs modern Chapalote modern Palomero
  49. 49. Highland Route Pacific Route 3,000 yrs modern Chapalote modern Palomero 2,000 yrs 1,000 yrs
  50. 50. Highland Route Pacific Route 3,000 yrs modern Chapalote modern Palomero 700 yrs2,000 yrs 1,000 yrs
  51. 51. 01 010 0010 01011 01111 10

×