A pectin methylesterase inhibitor NtPMEI21 negatively regulates resistance to brown spot disease in Nicotiana tabacum L

• Published in: Plant science (Limerick) Vol. 359; p. 112635
• Main Authors: Bai, Yalin, Ji, Yan, Jiang, Zipeng, Li, Zunqiang, Liu, Zhengwen, Zhang, Qiang, Zhang, Yu, Jiang, Caihong, Yang, Aiguo, Cheng, Lirui, Liu, Dan
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier B.V 01.10.2025
• Subjects: Alternaria - physiology; Brown spot disease; Carboxylic Ester Hydrolases - antagonists & inhibitors; Carboxylic Ester Hydrolases - genetics; Carboxylic Ester Hydrolases - metabolism; Cell Wall - metabolism; Disease Resistance - genetics; Gene Expression Regulation, Plant; Nicotiana - genetics; Nicotiana - immunology; Nicotiana - metabolism; Nicotiana - microbiology; Pectin methylesterase inhibitor; Pectin methylesterification; Pectins - metabolism; Plant Diseases - immunology; Plant Diseases - microbiology; Plant immunity; Plant Leaves - metabolism; Plant Proteins - genetics; Plant Proteins - metabolism; Pectin methylesterification; Plant immunity; Pectin methylesterase inhibitor; Brown spot disease

Pectin, as one of the major components of plant cell walls, plays a crucial role in cell wall integrity (CWI) which is closely linked with plant immunity. Pectin methylesterase (PME) catalyzes the demethylesterification of pectin and is modulated by the pectin methylesterase inhibitors (PMEIs). Here...