Cotton Science

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Suppressed expression of GhSAMS gene reduced the Helicoverpa armigera resistance in Gossypium hirsutum

Yang Liyan, Li Fang, Pu Zhe, Wang Chuangyun, Qin Lixia

Cotton Science, 2023, 35(3): 165-172. DOI: 10.11963/cs20230012

Fig. 1 Expression analysis of GhSAMS gene under the stress of H. armigera Different lowercase letters indicate significant difference (P < 0.05).

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Table 1 Primer sequences used in this study
Fig. 2 Phenotype and silencing efficiency detection of pTRV2::GhSAMS plants A: Phenotypes of different cotton seedlings 14 days after Agrobacterium infection. B: GhSAMS expression level in cotton leaves by semi-quantitative RT-PCR analysis. GhUBQ7 is the reference gene. WT: uninfected wild type plant, CK: plants infected by Agrobacterium with empty vectors.
Fig. 3 Effects of different cotton leaves on the growth and development of H. armigera Different lowercase letters indicate significant difference (P < 0.05).
Fig. 4 Feeding preference of H. armigera to different cotton leaves
Fig. 5 Damage profile of different cotton leaves after H. armigera attack
Fig. 6 H₂O₂ content in cotton leaves analyzed by DAB staining

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