Spatial regulationof D14L signaling in AM symbiosisof rice

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• An-Shan Hsiao, Paszkowsi group
• Thursday 30 April 2020, 13:00-13:30
• Online.

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Arbuscular mycorrhizal (AM) symbiosis is a mutually beneficialinteraction between fungiand plants, contributing to plant fitness and global nutrient cycles.Two paralogous /hydrolase receptorproteins,Arabidopsis KARRIKIN INSENSITIVE 2 (KAI2)and DWARF 14 (D14), recognize butenolides, the smoke compound karrikinsand the plant hormone strigolactones, respectively.Strigolactones induce hyphal branchingofAMfungiin the rhizosphere while rice DWARF14 -LIKE (D14L), the homologue of KAI2 , is indispensable for AM symbiosis establishmentas shown by thecomplete block of AM symbiosis in d14lmutants, suggesting an essential role duringpre-symbiotic communication. The promoter of D14 Lis expressed in the vasculature and the D14L protein shows nucleo-cytoplasmic localization, raising the questionsof how fungal perception in the rhizosphere is mediatedand whether both the cytosolic andthenuclear pools are necessaryfor D14L signaling.

This talk is part of the Plant Sciences Departmental Seminars series.

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