TY  - JOUR
AU  - Matei, Alexandra
AU  - Ernst, Corinna
AU  - Günl, Markus
AU  - Thiele, Björn
AU  - Altmüller, Janine
AU  - Walbot, Virginia
AU  - Usadel, Björn
AU  - Doehlemann, Gunther
TI  - How to make a tumour: cell type specific dissection of Ustilago maydis- induced tumour development in maize leaves
JO  - The new phytologist
VL  - 217
IS  - 4
SN  - 0028-646X
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2018-03185
SP  - 1681 - 1695
PY  - 2018
AB  -     The biotrophic fungus Ustilago maydis causes smut disease on maize (Zea mays), which is characterized by immense plant tumours. To establish disease and reprogram organ primordia to tumours, U. maydis deploys effector proteins in an organ‐specific manner. However, the cellular contribution to leaf tumours remains unknown.    We investigated leaf tumour formation at the tissue‐ and cell type‐specific levels. Cytology and metabolite analysis were deployed to understand the cellular basis for tumourigenesis. Laser‐capture microdissection was performed to gain a cell type‐specific transcriptome of U. maydis during tumour formation.    In vivo visualization of plant DNA synthesis identified bundle sheath cells as the origin of hyperplasic tumour cells, while mesophyll cells become hypertrophic tumour cells. Cell type‐specific transcriptome profiling of U. maydis revealed tailored expression of fungal effector genes. Moreover, U. maydis See1 was identified as the first cell type‐specific fungal effector, being required for induction of cell cycle reactivation in bundle sheath cells.    Identification of distinct cellular mechanisms in two different leaf cell types and of See1 as an effector for induction of proliferation of bundle sheath cells are major steps in understanding U. maydis‐induced tumour formation. Moreover, the cell type‐specific U. maydis transcriptome data are a valuable resource to the scientific community.
LB  - PUB:(DE-HGF)16
C6  - pmid:29314018
UR  - <Go to ISI:>//WOS:000424284400026
DO  - DOI:10.1111/nph.14960
UR  - https://juser.fz-juelich.de/record/846015
ER  -