ArticlePlant molecular biology1998
A putative rolB gene homologue of the Agrobacterium rhizogenes TR-DNA has different morphogenetic activity in tobacco than rolB.
Article in Plant molecular biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 26 citations in OpenAlex.
- Article
- Function of the aux and rol genes of the Ri plasmid in plant cell division in vitro.Plant signaling & behavior · 2009Article
- Growth and terpenoid indole alkaloid production in Catharanthus roseus hairy root clones in relation to left- and right-termini-linked Ri T-DNA gene integration.Plant cell reports · 2004Article
- Sequence and functional analysis of the left-hand part of the T-region from the nopaline-type Ti plasmid, pTiC58.Plant molecular biology · 1999Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Agrobacterium rhizogenes strains of the agropine type harbor on their Ri-plasmid two T-DNAs, a left TL-DNA and a right TR-DNA. The rolB gene of the TL-DNA is the major factor in the pathogenesis of the hairy-root disease and its constitutive expression interfere profoundly with plant morphogenesis. We have tested whether the expression of its sequence related putative homologue from the TR-DNA (rolBTR) may cause also bacterial virulence or affect plant development. Unlike rolB, rolBTR is unable to induce root formation on tobacco leaf discs. Tobacco plants expressing a chimeric 35S::rolBTR gene have reduced stature, off-shoots at the stem base and bent and wrinkled leaves with epinastic growth. 14 N-terminal amino acids which are absent in the rolB protein are indispensable to rolBTR protein activity. The characteristic tyrosine phosphatase super family motif CX5R is absent in the rolBTR protein. For rolB this motif is possibly functionally relevant. We conclude that the rolBTR gene product has morphogenic activity but is not a functional homologue of the rolB protein.
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