Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in this Registration Statement (Form S-3) and related Prospectus of Calyxt, Inc. for the registration of common stock, shares of preferred stock, warrants, subscription rights, and units or debt securities, and to the incorporation by reference therein of our report dated March 3, 2022, with respect to the consolidated financial statements of Calyxt, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2021, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP
Minneapolis, Minnesota
September 19, 2022