A longtime Congress loyalist, Natarajan claimed she followed Rahul's directions on the issue of green nod to certain big ticket projects but was "vilified, humiliated and sidelined" by central leadership.
She also said she has no plans to join any other political party after "such bitter experiences" and refuted reports she had met some BJP leaders.
Natarajan said she was ready to face a probe over green clearances granted by her.
"I have done no wrong. I am willing to be hanged or go to jail if any concrete proof of my wrongdoing is established," Natarajan said.
In this context, Natarajan downplayed the "Jayanthi Tax" barb from Narendra Modi during a poll campaign by the BJP's Prime Ministerial candidate, saying that when her own party treated her so badly, how can she blame someone who was in Opposition.
"Let the CBI investigate. I welcome it. I look forward to it because it will give me an opportunity to explain my position," Natarajan said.
The NDA government indicated it will take a fresh look at environmental clearances for projects granted or rejected by the previous UPA government
"I hope the Environment ministry now will go into each of these permissions which were granted and not granted and make sure that these are expeditiously dealt with only as per law and no other consideration," Finance Minister Arun Jaitley told reporters in Delhi.
In a counter-attack on Natarajan, Congress raised questions on the timing of her resignation and said serious allegations of corruption were behind her removal from the then UPA government. She was also dubbed as "opportunistic".
Congress spokesperson Abhishek Singhvi told reporters in Delhi that Natarajan was acting at the behest of her new "political masters" who may have got evidence against her.
The Congress also rallied behind Rahul, dismissing as "completely baseless" the allegations of his interference in the work of Environment Ministry and accused her of having "ulterior motives".
