# EPA registration clears spinach-peptide citrus-greening treatment

_Published Friday, August 21, 2026 at 8:08 AM EDT · Science · Latest · Tier 2 — Notable_

![EPA registration clears spinach-peptide citrus-greening treatment — Primary](https://scx2.b-cdn.net/gfx/news/2026/spinach-peptide-discov.jpg)

The U.S. Environmental Protection Agency has granted unconditional registration to a citrus-greening treatment based on spinach defensin peptides, according to Texas A&M AgriLife Research. Maryland-based Silvec Biologics registered the product. The therapy uses a naturally non-transmissible citrus tristeza virus strain to prompt treated trees to produce the peptide and does not alter the tree's genome, the source says. Silvec expects Florida growers to gain access beginning in late 2026.

## Sources

- [Phys.org](https://phys.org/news/2026-08-spinach-peptide-discovery-citrus-greening.html)

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Canonical: https://techandbusiness.org/newswire/TDIsB35vHZJo4YjM7QNtWL
Published: 2026-08-21T12:08:00.028Z
Story chronology: 2026-08-21T11:00:01.000Z
Retrieved: 2026-10-05T23:47:26.369Z
Publisher: Tech & Business (techandbusiness.org)