non-self pollen self pollen papillae stigma ovary style ovule pollen tube

RabGTPase. Sorting Nexin 1, endosomal protein. Tonoplast. Intrinsic Protein. TLG2a is .... ATG. Stop. 3625 bp. AlSRK. 1 .9 gene. AlSRK. 1 .9. cDNA. Al. SR. K. 1.
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self pollen

non-self pollen

papillae stigma style pollen tube

ovule ovary

Figure 1.1: Scheme of a longitudinal section through the pistil with all parts of the plant female reproductive organs and principle of the self-incompatibility response: non-self pollen (right) germinates and forms a pollen tube. Self-pollen (left) germination is inhibited and the pollen rejected.

Plant enhancer GAL4

UAS

DNA

GAL4 GFP

Figure 2.1: Principal of the Enhancer-Trap strategy, that was used for the establishment of a collection of A. thaliana lines in the laboratory of Jim Haseloff. A transgene (yellow bar) was randomly inserted into the plant genome. The transgene contains the sequence for the yeast transcription factor GAL4, as well as the GFP gene whose transcription is controlled by GAL4 recognition sequences (UAS ). When the transgene is inserted close to an enhaner, GAL4 is expressed and activates GFP expression. This collection of plants is a very useful tool to identify plant enhancers that are active in a specific tissue. In the case of the N9292 line, GFP has a reticulum tag and it is highly expressed in papillar cells, revealing that the transgene is probably inserted in proximity of a stigmatic enhancer. According to http://www.plantsci.cam.ac.uk/Haseloff/

Construction pSLR1 AlSNX1

GFP6

t

Description

Destination vector

Selection in planta

Plant

Objective

Endosomal protein Sorting Nexin 1 - Green Fluorescent Protein fusion

pGreen

Kanamycin (50 µg/ml)

Arabidopsis lyrata 1.9

Overexpression of SNX1 and localization

Sorting Nexin 1 RNAi

pGreen

Kanamycin (50 µg/ml)

PI3-kinase antisens

pGreen

Kanamycin (50 µg/ml)

First exon of plasma membranous Formin FH6

dp Green/BarT

Glufosinate ammonium (6 mg/l)

A.th line N9292

Localization of plasma membrane

TLG2a is part of SNARE complexes at the TGN

dp Green/BarT

Glufosinate ammonium (6 mg/l)

A.th line N9292

Localization of TGN

Tonoplast Intrinsic Protein

dp Green/BarT

Glufosinate ammonium (6 mg/l)

A.th line N9292

Localization of tonoplast

Sorting Nexin 1, endosomal protein

dp Green/BarT

Glufosinate ammonium (6 mg/l)

A.th line N9292

Localization of endosomes

ARA7, endosomal RabGTPase

dp Green/BarT

Glufosinate ammonium (6 mg/l)

A.th line N9292

S-locus receptor kinase C-terminal GFP fusion

pK7WGF2

Kanamycin (50 µg/ml)

A.thaliana

pSLR1 t

intron

pSLR1

6UAS 6UAS

AtδTIP

6UAS

AtTLG2a

AtSNX1

6UAS

AtFH6 exon1

6UAS

AtVPS34

mRFP