Riveta retained his existing position as economy and agricultural minister in both governments.
Another agricultural minister, Norihiko Akagi, who was involved in a political funding scandal, resigned after the election.
However, the new agricultural minister Takehiko Endo, involved in a finance scandal, resigned only 7 days later.
Tellingly, the reform announced recently by European agricultural ministers does not address export subsidies.
But the suicide of the agricultural minister this week threatens his administration with one of the oldest problems in Japanese politics: money scandals.
The French agricultural minister warned that an exceptionally hot, dry spring would reduce that country's wheat harvest.
I do not agree with the German agricultural minister's view that export refunds on live cattle can now no longer be justified.
I have recently read that the agricultural ministers are discussing a reduction in red tape.
We are therefore thankful that, in Paris, the 22 agricultural ministers have clearly indicated where it should be heading.
The agricultural ministers have also been kept fully informed of your opinions.