Marked rise of French weight (5)
I believe the answer is:
noted
'marked' is the definition.
('note' can be a synonym of 'mark')
'rise of french weight' is the wordplay.
'rise' shows that the letters should be reversed in order.
'of french' becomes 'de' ('of' in French).
'weight' becomes 'ton' (unit of weight).
'de'+'ton'='deton'
'deton' back-to-front is 'NOTED'.
(Other definitions for noted that I've seen before include "Famous, well-known - entered into little book" , "Celebrated, eminent" , "Made a record - celebrated" , "Famed" , "Wrote it down" .)