Resistance of True Citrus species to Diaphorina citri.

Autor: Eduardo WI; Department of Research and Development, Fund for Citrus Protection - Fundecitrus, Araraquara, Brazil., Miranda MP; Department of Research and Development, Fund for Citrus Protection - Fundecitrus, Araraquara, Brazil., Volpe HXL; Department of Research and Development, Fund for Citrus Protection - Fundecitrus, Araraquara, Brazil., Garcia RB; Department of Research and Development, Fund for Citrus Protection - Fundecitrus, Araraquara, Brazil., Girardi EA; Department of Research and Development, Fund for Citrus Protection - Fundecitrus, Araraquara, Brazil.; Brazilian Agricultural Research Corporation - Embrapa, Embrapa Cassava & Fruits, Cruz das Almas, Brazil., Alquezar B; Instituto de Biologia Molecular y Celular de Plantas - Consejo Superior de Investigaciones Científicas (IBMCP-CSIC), Universidad Politécnica de Valencia, Valencia, Spain., Ruiz AE; Instituto de Biologia Molecular y Celular de Plantas - Consejo Superior de Investigaciones Científicas (IBMCP-CSIC), Universidad Politécnica de Valencia, Valencia, Spain., Peña L; Instituto de Biologia Molecular y Celular de Plantas - Consejo Superior de Investigaciones Científicas (IBMCP-CSIC), Universidad Politécnica de Valencia, Valencia, Spain.
Jazyk: angličtina
Zdroj: Pest management science [Pest Manag Sci] 2022 Nov; Vol. 78 (11), pp. 4783-4792. Date of Electronic Publication: 2022 Aug 15.
DOI: 10.1002/ps.7098
Abstrakt: Background: Host genetic resistance is a promising strategy for the management of Diaphorina citri Kuwayama (Hemiptera: Psyllidae), and consequently Huanglongbing (HLB). To date, no study has investigated the resistance to D. citri in the clonal and vegetatively propagated plants of the Microcitrus, Eremocitrus, and Atalantia genera. This study assesses Near and True Citrus genotype antixenosis and antibiosis against D. citri, with trichome density and volatile emission as possible mechanisms of resistance.
Results: All genotypes were oviposited by D. citri, however, 8 of 14 genotypes were less oviposited than Citrus × sinensis 'Valencia' (susceptible control). Diaphorina citri nymphs had lower nymphal viability in E. glauca (31%) and M. warburgiana (58%) than that in Citrus × sinensis (77%). The behavioral assay showed that 30% of D. citri nymphs in the last instars evaded E. glauca shoots, whereas no nymphs evaded Citrus × sinensis shoots. A higher trichome density was observed in E. glauca shoots compared to the other genotypes. Chemical analysis revealed differences in the volatile profiles of E. glauca and Citrus × sinensis.
Conclusion: Eremocitrus glauca and M. warburgiana genotypes were more resistant to D. citri than Citrus × sinensis. Higher trichome density in the shoots may negatively influence the development of D. citri nymphs. Eremocitrus glauca volatiles may also be involved in their resistance to D. citri. © 2022 Society of Chemical Industry.
(© 2022 Society of Chemical Industry.)
Databáze: MEDLINE
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