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Title 

CaWRKY2, a chili pepper transcription factor, is rapidly induced by incompatible plant pathogens

Authors 

S K OhS Y YiS H YuJae Sun MoonJeong Mee ParkDoil Choi

Publisher 

Springer Verlag (Germany)

Issue Date 

2006

Citation 

Molecules and Cells, vol. 22, no. 1, pp. 58-64

Keywords 

chili pepperplant defensetranscription factorWRKYcomplementary DNAjasmonic acidmessenger RNAsalicylic acidunclassified druggene isolation

Abstract 

WRKY family proteins are a class of plant-specific transcription factors involved in stress response signaling pathways. In this study a gene encoding a putative WRKY protein was isolated from a pepper EST database (http://genepool.kribb.re.kr). The cDNA, named Capsicum annuum WRKY2 (CaWRKY2), encodes a putative polypeptide of 548 amino acids, containing two WRKY domains with zinc finger motifs and two potential nuclear localization signals. Northern blot analyses showed that CaWRKY2 mRNA was preferentially induced during incompatible interactions of pepper plants with PMMoV, Pseudomonas syringae pv. syringae 61, and Xanthomonas axonopodis pv. vesicatoria race 3. Furthermore, CaWRKY2 transcripts were strongly induced by wounding and ethephon treatment, whereas only moderate expression was detected following treatment with salicylic acid and jasmonic acid. CaWRKY2 was translocated to the nucleus when a CaWRKY2smGFP fusion construct was expressed in onion epidermal cells. CaWRKY2 also had transcriptional activation activity in yeast. Taken together our data suggest that CaWRKY2 is a pathogen-inducible transcription factor that may have a role in early defense responses to biotic and abiotic stresses.

ISSN 

1016-8478

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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