Respiratory burst oxidase G (SlRBOHG): A key regulator of HO-Mediated Na homeostasis and salt tolerance in tomato.

Regulation of sodium homeostasis is vital for plant responses to salinity. In this study, we characterized two allelic tomato mutants, sodium gatherer1-2 (sga1-2), which show extreme salt sensitivity. The mutants display early severe chlorosis, swelling of aerial parts, and eventual leaf desiccation, leading to plant death.

Approaching the genetic dissection of indirect adventitious organogenesis process in tomato explants.

The screening of 862 T-DNA lines was carried out to approach the genetic dissection of indirect adventitious organogenesis in tomato. Several mutants defective in different phases of adventitious organogenesis, namely callus growth (tdc-1), bud differentiation (tdb-1, -2, -3) and shoot-bud development (tds-1) were identified and characterized. The alteration of the TDC-1 gene blocked callus proliferation depending on the composition of growth regulators in the culture medium.

Phenotypic and genetic characterization of tomato mutants provides new insights into leaf development and its relationship to agronomic traits.

Background: Tomato mutants altered in leaf morphology are usually identified in the greenhouse, which demands considerable time and space and can only be performed in adequate periods. For a faster but equally reliable scrutiny method we addressed the screening in vitro of 971 T-DNA lines. Leaf development was evaluated in vitro in seedlings and shoot-derived axenic plants.