{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture_15B - CLV WUS Interactions A feedback loop between...

Info icon This preview shows pages 1–23. Sign up to view the full content.

View Full Document Right Arrow Icon
CLV / WUS Interactions A feedback loop between CLV and WUS maintains the stem cell population throughout the life of a plant.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Flowering Time Flower Meristem Identity Flower Organ Identity Fruit Development FT APETALA1, LEAFY, CAULIFLOWER, (TERMINAL FLOWER) A, B, C, D FRUITFULL, SHATTERPROOF INDEHISCENT
Image of page 4
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1 2 3 4 5 6 7 8 9 10 12 13 11 *
Image of page 6
Traas and Vernoux, 2002 The shoot apical meristem (SAM)
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
LFY, AP1 and CAL are expressed in flower meristems
Image of page 8
Fl ower meristems fail to form flowers in the ap1 cal double mutant
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 10
All flowers are converted into leafy shoots in lfy ap1 mutants
Image of page 11

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The loss of flower formation in AP1 CAL mutants and in AP1 LFY mutants demonstrates that LFY, AP1 and CAL are required for flower development
Image of page 12
LFY is normally expressed in flower meristems. What would happen if LFY was “constitutively” expressed throughout the plant?
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Constitutive expression of LFY (or AP1 and CAL) converts shoots into flowers and promotes early flower development 35S::LFY Wil d type D. Weigel flower s
Image of page 14
15 Year-old aspen trees D. Weigel
Image of page 15

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
35S::LFY transgenic aspen trees Flower in less than six months D. Weigel
Image of page 16
The LFY and AP1 genes are expressed in flower meristems.
Image of page 17

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The LFY and AP1 genes are expressed in flower meristems. In LFY/AP1 double mutants, flower meristems are converted into shoots (leaves and stems).
Image of page 18
The LFY and AP1 genes are expressed in flower meristems. In LFY/AP1 double mutants, flower meristems are converted into shoots (leaves and stems). LFY and AP1 normally act to promote flower meristem identity, meaning that they tell cells to form a flower rather than a shoot.
Image of page 19

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The TFL gene is expressed in the shoot apical meristem where it acts to repress LFY and AP1 expression.
Image of page 20
This is the end of the preview. Sign up to access the rest of the document.
  • Winter '09
  • YANOFSKY
  • Plant morphology, sepal petal stamen, sepal sepal carpel carpel carpel sepal sepal, petal stamen carpel sepal

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern