Silverleaf Whitefly Induces Salicylic Acid Defenses and Suppresses Effectual Jasmonic Acid Defenses
Overview
Affiliations
The basal defenses important in curtailing the development of the phloem-feeding silverleaf whitefly (Bemisia tabaci type B; SLWF) on Arabidopsis (Arabidopsis thaliana) were investigated. Sentinel defense gene RNAs were monitored in SLWF-infested and control plants. Salicylic acid (SA)-responsive gene transcripts accumulated locally (PR1, BGL2, PR5, SID2, EDS5, PAD4) and systemically (PR1, BGL2, PR5) during SLWF nymph feeding. In contrast, jasmonic acid (JA)- and ethylene-dependent RNAs (PDF1.2, VSP1, HEL, THI2.1, FAD3, ERS1, ERF1) were repressed or not modulated in SLWF-infested leaves. To test for a role of SA and JA pathways in basal defense, SLWF development on mutant and transgenic lines that constitutively activate or impair defense pathways was determined. By monitoring the percentage of SLWF nymphs in each instar, we show that mutants that activate SA defenses (cim10) or impair JA defenses (coi1) accelerated SLWF nymphal development. Reciprocally, mutants that activate JA defenses (cev1) or impair SA defenses (npr1, NahG) slowed SLWF nymphal development. Furthermore, when npr1 plants, which do not activate downstream SA defenses, were treated with methyl jasmonate, a dramatic delay in nymph development was observed. Collectively, these results showed that SLWF-repressed, JA-regulated defenses were associated with basal defense to the SLWF.
Dufulin Impacts Plant Defense Against Tomato Yellow Leaf Curl Virus Infecting Tomato.
Huang L, Tang Y, Wang S, Chen J, Du J, Yan S Viruses. 2025; 17(1.
PMID: 39861842 PMC: 11768724. DOI: 10.3390/v17010053.
Protein Dynamics in Plant Immunity: Insights into Plant-Pest Interactions.
Zhao Y, Wang Y Int J Mol Sci. 2024; 25(23).
PMID: 39684662 PMC: 11641797. DOI: 10.3390/ijms252312951.
Ziaullah S, Hamayun M, Iqbal A, Hussain A Heliyon. 2024; 10(22):e38624.
PMID: 39634386 PMC: 11616525. DOI: 10.1016/j.heliyon.2024.e38624.
Zhang J, Liu Y, Li D, Wu Y, Zhao S, Wang X Nat Commun. 2024; 15(1):9448.
PMID: 39487136 PMC: 11530440. DOI: 10.1038/s41467-024-53894-y.
ApCarE4 and ApPOD3 participate in the adaptation of pea aphids to different alfalfa varieties.
Wu Y, Ma R, Wei J, Song L, Dewer Y, Wang S Sci Rep. 2024; 14(1):25444.
PMID: 39455643 PMC: 11511942. DOI: 10.1038/s41598-024-76192-5.