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SVISS – a novel transient gene silencing system for gene function discovery and validation in tobacco plants
Author(s) -
Gosselé Véronique,
Faché Ina,
Meulewaeter Frank,
Cornelissen Marc,
Metzlaff Michael
Publication year - 2002
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.2002.01471.x
Subject(s) - gene silencing , biology , tobacco mosaic virus , gene , rna interference , genetics , nicotiana tabacum , gene knockout , transgene , rna induced silencing complex , rna silencing , microbiology and biotechnology , virus , rna
Summary We developed a novel, two‐component transient gene silencing system in which the satellite tobacco mosaic virus (STMV) is used as vector for the delivery of inhibitory RNA into tobacco plants and the tobacco mosaic virus strain U2 (TMV‐U2) is used as helper virus for supplying replication and movement proteins in trans . The main advantage of the system is that by uncoupling virus replication components from silencing induction components, the intensity of silencing becomes more pronounced. We call this system satellite virus‐induced silencing system (SVISS) and will demonstrate here its robustness, speed and effectiveness. We were able to obtain pronounced and severe knockout phenotypes for a range of targeted endogenous genes belonging to various biochemical pathways and expressed in different plant tissues, such as genes involved in leaf and flower pigmentation, genes for cell wall synthesis in leaf, stem and root tissues or a ubiquitous RNA polymerase gene. By tandem insertion of more than one target gene sequence into the vector, we were able to induce simultaneous knockouts of an endogenous gene and a transgene. SVISS is the first transient gene silencing system for Nicotiana tabacum , which is a genetically well‐characterized bridging species for the Solanaceae plant family.