Meloidogyne incognita control in cotton mediated host-induced gene silencing.

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Author(s): SANTOS, M. M. dos; SÁ, M. E. L. de; LEMES, S. V. da R.; CAVALCANTE, R. dos S.; MORGANTE, C. V.; SA, M. F. G. de

Summary: In the present work we used a Host-Induced Gene Silencing (HIGS) strategy employing RNA interference (RNAi) mechanisms in order to silence RKN essential genes involved in development (cathepsin L cysteine proteinase - MiCPL), metabolism (isocitrate lyase - MiICL), mRNA processing (splicing factor - MiSF) and parasitism (nematode effector Mi16D-10). We staked all four RKN genes into a single construct (dsMINC2), driven by the pUceS8.3 constitutive soybean promoter, in order to control the nematode reproduction in transgenic cotton plants developed from an RKN-susceptible cultivar (BRS372). Transgenic dsMinc2-T2 plants infected with Meloidogyne incognita showed a significant reduction in the number of eggs/g.root -1 (73 - 93%) as well as in the reproduction factor (80-93%), compared with the susceptible non-transgenic cultivar.

Publication year: 2023

Types of publication: Abstract in annals or event proceedings

Unit: Embrapa Semi-arid Region

Keywords: Algodão, Cotton, Doença, Gossypium Hirsutum, Nematóide das galhas, Planta Transgênica, Produção Agrícola, Root-knot nematodes, Small interfering RNA, Transgenic plants

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