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The role of MLO in powdery mildew susceptibility depends on a combination of functional specialization and subcellular localization.

Plant physiology - 2 Jul 2026

Bloodgood David, Zhang Qiong, Li Pai, Wu Ying, Pan Michael, Zhou Christina, Hsu Aspen, Zhang Jun, Panstruga Ralph, Kessler Sharon A, He Ping, Shan Libo, Wei Cheng-I, Xiao Shunyuan

Abstract excerpt

Obligate biotrophic powdery mildew (PM) fungi strictly require living hosts to survive. To search for host factors or processes essential for PM pathogenesis, we conducted a tailored forward genetic screen with the immunocompromised eds1-2/pad4-1/sid2-2 (eps) triple Arabidopsis mutant. This led to the identification of 5 allelic disruptive mutations in Mildew Locus O 2 (MLO2) that are responsible for the...

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PMID: 42341170
DOI: 10.1093/plphys/kiag413
PMCID: PMC13360292

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