TY  - JOUR
A1  - Wan, Wei-Lin
A1  - Zhang, Lisha
A1  - Pruitt, Rory
A1  - Zaidem, Maricris
A1  - Brugman, Rik
A1  - Ma, Xiyu
A1  - Krol, Elzbieta
A1  - Perraki, Artemis
A1  - Kilian, Joachim
A1  - Grossmann, Guido
A1  - Stahl, Mark
A1  - Shan, Libo
A1  - Zipfel, Cyril
A1  - van Kan, Jan A. L.
A1  - Hedrich, Rainer
A1  - Weigel, Detlef
A1  - Gust, Andrea A.
A1  - Nürnberger, Thorsten
T1  - Comparing Arabidopsis receptor kinase and receptor protein-mediated immune signaling reveals BIK1-dependent differences
JF  - New Phytologist
N2  - Pattern recognition receptors (PRRs) sense microbial patterns and activate innate immunity against attempted microbial invasions. The leucine-rich repeat receptor kinases (LRR-RK) FLS2 and EFR, and the LRR receptor protein (LRR-RP) receptors RLP23 and RLP42, respectively, represent prototypical members of these two prominent and closely related PRR families.

We conducted a survey of Arabidopsis thaliana immune signaling mediated by these receptors to address the question of commonalities and differences between LRR-RK and LRR-RP signaling.

Quantitative differences in timing and amplitude were observed for several early immune responses, with RP-mediated responses typically being slower and more prolonged than those mediated by RKs. Activation of RLP23, but not FLS2, induced the production of camalexin. Transcriptomic analysis revealed that RLP23-regulated genes represent only a fraction of those genes differentially expressed upon FLS2 activation. Several positive and negative regulators of FLS2-signaling play similar roles in RLP23 signaling. Intriguingly, the cytoplasmic receptor kinase BIK1, a positive regulator of RK signaling, acts as a negative regulator of RP-type immune receptors in a manner dependent on BIK1 kinase activity.

Our study unveiled unexpected differences in two closely related receptor systems and reports a new negative role of BIK1 in plant immunity.
KW  - Arabidopsis
KW  - immune receptor
KW  - immune signaling comparison
KW  - plant immunity
KW  - receptor kinase
KW  - receptor protein
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-233385
VL  - 221
ER  - 
TY  - JOUR
A1  - Kaiser, Bettina
A1  - Vogg, Gerd
A1  - Fürst, Ursula B.
A1  - Albert, Markus
T1  - Parasitic plants of the genus Cuscuta and their interaction with susceptible and resistant host plants
JF  - Frontiers in Plant Science
N2  - By comparison with plant microbe interaction, little is known about the interaction of parasitic plants with their hosts. Plants of the genus Cuscuta belong to the family of Cuscutaceae and comprise about 200 species, all of which live as stem holoparasites on other plants. Cuscuta spp. possess no roots nor fully expanded leaves and the vegetative portion appears to be a stem only. The parasite winds around plants and penetrates the host stems via haustoria, forming direct connections to the vascular bundles of their hosts to withdraw water, carbohydrates, and other solutes. Besides susceptible hosts, a few plants exist that exhibit an active resistance against infestation by Cuscuta spp. For example, cultivated tomato (Solanum lycopersicum) fends off Cuscuta reflexa by means of a hypersensitive-type response occurring in the early penetration phase. This report on the plant plant dialog between Cuscuta spp. and its host plants focuses on the incompatible interaction of C. reflexa with tomato.
KW  - incompatible interaction
KW  - messenger-RNA
KW  - Reflexa Roxb
KW  - localization
KW  - symbiosis
KW  - parasitic plants
KW  - plant-plant interaction
KW  - Cuscuta
KW  - dodder
KW  - plant immunity
KW  - resistance
KW  - Lycopersicon esculentum
KW  - phenolic constituents
KW  - Orobanche crenata
KW  - weed dodder
KW  - tomato
KW  - striga
Y1  - 2015
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-144091
VL  - 6
IS  - 45
ER  -