Veria - Claim Fact Check

Claim: Once ribonucleic acid is inside a plant, it replicates

15%

Analysis:

The claim "Once ribonucleic acid is inside a plant, it replicates" is false as a universal statement. Most types of RNA—including messenger RNA, double-stranded RNA, and transfer RNA—do not self-replicate inside plant cells¹². These molecules are typically degraded by cellular machinery rather than copied.
RNA replication requires a specific enzyme called RNA-dependent RNA polymerase (RdRp), which is encoded by most RNA viruses but is not a standard component of normal plant RNA metabolism³⁴⁵. For RNA to replicate, it must either carry the genetic instructions to produce this enzyme (as viral RNA does) or be part of a specially engineered self-replicating RNA system¹².
Plants do possess their own RdRP enzymes, but these primarily function in antiviral defense—using viral RNA as a template to generate small complementary RNAs that trigger degradation of the viral RNA—rather than replicating incoming RNA for its own propagation⁵⁶.
The claim appears to oversimplify or misrepresent descriptions of Terrana Biosciences' proprietary technology, which uses RNA from benign plant viruses as a "chassis." Because this chassis RNA is derived from viruses that naturally encode replication machinery, it can replicate once inside the plant⁷⁸. However, this is a highly specific engineered system, not a general biological rule.
The statement conflates a narrow, technology-specific phenomenon with a broad biological principle. Exogenous RNA applied to plants (such as conventional dsRNA sprays or mRNA) generally does not replicate, which is why RNA stability and degradation have historically been major challenges in agricultural biotechnology⁷⁹.

Overall validity: 15%