Yuhko Kobayashi
Japan
Research Article
Increased Expression of the Tomato SISWEET15 Gene During Grey Mold
Infection and the Possible Involvement of the Sugar Efflux to Apoplasm in
the Disease Susceptibility
Author(s): Yuichiro Asai, Yuhko Kobayashi and Issei Kobayashi
Yuichiro Asai, Yuhko Kobayashi and Issei Kobayashi
Host plant susceptibility genes, which facilitate pathogen growth during plant infection, are attractive targets for disease-resistance breeding. To explore candidate susceptibility genes in tomatoes during Botrytis cinerea infection, the fungal infection-responsive SWEET genes were screened for out of all 31 tomato SlSWEET genes. The expression of only one gene, SlSWEET15, was induced by B. cinerea at the pre-necrotic stage (16 h post inoculation), whereas most of the other SWEET genes were downregulated. The expression of the SlSWEET15 transiently increased by 16 h post inoculation, then reduced to basal levels by 24 h post inoculation. We measured the glucose and sucrose contents of
fluid of infected cotyledons at the pre-necrotic stage (20 h post inoculation). The sugar contents of the apoplasmic fluids were significantly higher in the i.. View More»
DOI:
10.4172/2157-7471.1000329