Question
This hormone is synthesized from reserves of alpha-linolenic acid in the octa·deca·noid pathway. For 10 points each:
[10m] Name this plant hormone primarily associated with triggering defense against herbivory in a similar mechanism to salicylic acid triggering systemic acquired resistance against pathogens.
ANSWER: jasmonates [accept jasmonic acids; accept methyl jasmonate; accept JA]
[10h] Modular plant resistance proteins called NLRs consist of a nucleotide-binding domain and one of these effector-binding motifs. These horseshoe-shaped motifs also act as the receptor site in toll-like receptors.
ANSWER: leucine-rich repeats [or LRRs]
[10e] Instead of relying on NLRs, plants respond to viral infections through this process discovered in C. elegans by Fire and Mello. In this process, Dicer cleaves dsRNA in miRNA or siRNA hairpins before transcription is silenced.
ANSWER: RNA interference [or RNAi]
<Biology>
Summary
| 2025 ACF Nationals | 04/19/2025 | Y | 3 | 16.67 | 100% | 33% | 33% |
Data
| Georgia Tech | Waterloo A | 0 | 0 | 10 | 10 |
| Stanford | Chicago A | 10 | 10 | 10 | 30 |
| Toronto A | Illinois A | 0 | 0 | 10 | 10 |