Silencing of SlFTR-c, the catalytic subunit of ferredoxin:thioredoxin reductase, induces pathogenesis-related genes and pathogen resistance in tomato plants

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Title
Silencing of SlFTR-c, the catalytic subunit of ferredoxin:thioredoxin reductase, induces pathogenesis-related genes and pathogen resistance in tomato plants
Author(s)
Chan Ju Lim; Ung-Bum Kim; B S Lee; Ha-Youn Lee; T H Kwon; Jeong Mee ParkSuk Yoon Kwon
Bibliographic Citation
Biochemical and Biophysical Research Communications, vol. 399, no. 4, pp. 750-754
Publication Year
2010
Abstract
As a heterodimeric protein, ferredoxin:thioredoxin reductase (FTR) catalyses the light-dependant activation of several photosynthetic enzymes. The active site of the catalytic subunit of FTR contains a redox-active disulfide and a [4Fe-4S] center. We isolated the catalytic subunit gene of FTR, designated SlFTR-c, from tomato (Solanum lycopersicum L.). SlFTR-c transcripts were detected in all tissues examined, including roots, leaves, flowers, fruits, and seeds. Interestingly, virus-induced gene silencing (VIGS) of SlFTR-c resulted in necrotic lesions with typical cell death symptoms and reactive oxygen species (ROS) production in tomato leaves. Moreover, these SlFTR-c-silenced plants displayed enhanced disease resistance against bacterial pathogens, specifically Pseudomonas syringae pv. tomato DC3000, by the induction of defense-related genes (SlPR-1, SlPR-2, SlPR-5, SlGlucA, SlChi3, and SlChi9). Taken together, it seems that SlFTR-c works as a regulator of programmed cell death (PCD) and pathogen resistance in tomato plants.
Keyword
Catalytic subunit of ferredoxin:thioredoxin reductaseDefense responseLesion mimicsSolanum lycopersicumVirus-induced gene silencing (VIGS)
ISSN
0006-291X
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.bbrc.2010.08.016
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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