In a swift response, Speaker P Dhanapal issued notice to the MLAs who have been staying at a resort in Puducherry since they met state Governor Ch Vidyasagar Rao on Tuesday and expressed lack of confidence in Chief Minister K Palaniswami.
The Speaker sought their replies within seven days.
The rebels, however, dismissed the move to disqualify them as "a planned drama" and said they would legally challenge it.
The whip's approach was "ill conceived and a blind thought and we will not be cowed by any such threats," he told reporters in the presence of several other legislators camping at the resort on Puducherry outskirts.
More From This Section
He contended that Rajendran had violated procedures laid down by Supreme Court in such matters.
Thangatamilselvan also said he had not received the Speaker's notice so far.
Meanwhile, Puducherry Senior Superintendent of Police Rajiv Ranjan and Tahsildar Dayalan visited the resort, where 18 MLAs are camping, to ascertain the prevailing situation.
The MLAs had met the Governor a day after the merger of two AIADMK factions led by Palaniswami and former chief minister O Panneerselvam, posing a threat to stability of the government.
Amid opposition DMK and others demanding a trust vote citing the dissension in the AIADMK ranks, Government Chief Whip S Rajendran today submitted a memorandum to the Assembly Speaker seeking disqualification of the 19 MLAs.
Rajendran, citing reports, said the pro-Dhinakaran MLAs had told the Governor on Tuesday that they were 'withdrawing' support to the Palaniswami government.
"Further, they (the rebel MLAs) have also addressed the media. This is anti-party (activity). Since such an act implies voluntary relinquishing of membership, they are liable to be disqualified under Tenth Schedule of the Constitution (related to anti-defection)," the Chief Whip said.
Citing this as well as a Tamil Nadu anti-defection law of 1986, he sought the disqualification of the 19 MLAs.
Acting on the memorandum, Speaker Dhanapal later issued notices to the MLAs seeking their reply within seven days, official sources said.
Vetrivel alleged the action of the Whip was an attempt to "intimidate 15-20 (additional) MLAs" who he claimed wanted to switch over to their camp.
He said the apex court had in 2011 quashed then Karnataka Speaker disqualifying 16 rebel MLAs,including 11 of BJP, ahead of then Chief Minister BS Yeddyurappa facing trust vote.
He also questioned why there was no action against Panneerselvam and his supporters for voting against the government in the February 18 trust vote faced by Palaniswami.
He also said Dhinakaran had no intention of becoming the Chief Minister of the state and reiterated the demand for the resignation of Palaniswami and Panneerselvam.
The candidature of any other person, including Speaker Dhanapal, for the CM's post was agreeable to them, he said, an opinion also echoed by Thangatamilselvan.
Sasikala's Mannargudi-based brother V Divakaran has already backed Dhanapal to become the Chief Minister.
Training his guns on Panneerselvam, Vetrivel said he had levelled corruption charges against the government and took the fight for AIADMK's two leaves symbol to the Election Commission and wondered why he was now part of the cabinet.
Earlier in the day, Dhinakaran supporters burnt posters of Rajya Sabha MP R Vaithilingam, recently 'expelled' by Dhinakaran from the party, besides that of Puducherry unit of unified AIADMK leader Om Sakthi Segar.
Segar had yesterday led a protest against the MLAs outside the resort.
Meanwhile, police was deployed in strength outside the resort, where the MLAs are staying in the coastal village of Chinna Veerampattinam on the outskirts of Puducherry.
Thangatamilselvamn said "a wrong image about us is being projected in a section of the media. The fact is that we are all here to project the correct picture and that we all remain united."
Speaking to reporters, he urged Palaniswami to hold consultations with all stakeholders to end the impasse.