Identification of known indole glucosinolate biosynthetic genes and glucosinolate-modifying genes from Arabidopsis in Erysimum cheiranthoides.

a) The study focuses on genetic similarities between Arabidopsis and Erysimum cheiranthoides.
b) The research aims to discover novel genes related to indole glucosinolate biosynthesis.
c) Indole glucosinolate biosynthetic genes are absent in Arabidopsis.
d) Erysimum cheiranthoides is not genetically related to Arabidopsis.