Journal
JOURNAL OF MICROBIOLOGICAL METHODS
Volume 184, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mimet.2021.106197
Keywords
GFP; Hygromycin; Latent infection; Soybean stem canker
Categories
Funding
- Universidad Nacional de Mar del Plata [UNMdP AGR 462/14, AGR 517/16, AGR569/18]
- Instituto Nacional de Tecnologia Agropecuaria [INTA PNPV-1135024, PNCYO-1127034]
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This study has successfully described the genetic transformation of Diaporthe caulivora, establishing an efficient protocol and confirming stability and T-DNA integration of transgenic isolates. Future studies utilizing GFP-expressing isolates will allow for further research on plant-fungus interactions.
This is the first report describing the genetic transformation of Diaporthe caulivora, the soybean stem canker fungus. A simple and 100% efficient protocol of Agrobacterium tumefaciens-mediated transformation used mycelium as starting material and the hygromycin B resistance and green fluorescent protein (GFP) as a selection and reporter agents, respectively. All transgenic isolates were mitotically stable in two independent experiments and polymerase chain reaction with hygromycin B resistance primers confirmed successful T-DNA integration into the fungal genome. Plant-fungus interaction studies, including pathogenicity, latency, and endophytism, as well as further studies of random and targeted mutagenesis will be possible with GFP-expressing isolates of D. caulivora and other species in the Diaporthe / Phomopsis complex.
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