【摘 要】
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Head smut,caused by the fungal pathogen Sporisorium reilianum,poses a grave threat to maize (Zea mays) production worldwide.ZmWAK,a transmembrane protein with an extracellular receptor domain and an i
【机 构】
：
National Maize Improvement Center of China,China Agricultural University,Beijing,China,100193
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Head smut,caused by the fungal pathogen Sporisorium reilianum,poses a grave threat to maize (Zea mays) production worldwide.ZmWAK,a transmembrane protein with an extracellular receptor domain and an intercellular kinase domain,was validated to confer the quantitative resistance to head smut disease.Here,a pair of near-isogenic lines,the susceptible Huangzao4 and its ZmWAK-converted resistant Huangzao4R,was used to decipher a holistic ZmWAK-mediated molecular mechanism underlying head smut resistance.The growth of pathogen mycelium was severely arrested in Huangzao4R,leading to a lagged pace peitowards shoot apical meristem (SAM) before floral transition,which was decisive to Sporisorium reilianum pathogenicity.The invasion hyphae exhibited more energetic vesicle trafficking in Huangzao4 relative to Huangzao4R under observation with transmission electron microscopy (TEM),implying a suppression of pathogen secretory pathway.
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