Dipartimento di Biologia e Biotecnologie Charles Darwin, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185 Rome, Italy.
J Plant Physiol. 2012 Nov 1;169(16):1623-30. doi: 10.1016/j.jplph.2012.05.006. Epub 2012 Jun 18.
The cell wall is a complex structure mainly composed by a cellulose-hemicellulose network embedded in a cohesive pectin matrix. Pectin is synthesized in a highly methyl esterified form and is de-esterified in muro by pectin methyl esterases (PMEs). The degree and pattern of methyl esterification affect the cell wall structure and properties with consequences on both the physiological processes of the plants and their resistance to pathogens. PME activity displays a crucial role in the outcome of the plant-pathogen interactions by making pectin more susceptible to the action of the enzymes produced by the pathogens. This review focuses on the impact of pectin methyl esterification in plant-pathogen interactions and on the dynamic role of its alteration during pathogenesis.
细胞壁是一种复杂的结构，主要由纤维素-半纤维素网络组成，嵌入在具有粘性的果胶基质中。果胶以高度甲酯化的形式合成，并在细胞壁中通过果胶甲酯酶（PMEs）进行去甲酯化。甲酯化的程度和模式会影响细胞壁的结构和性质，从而影响植物的生理过程及其对病原体的抗性。PME 活性在植物-病原体相互作用的结果中起着至关重要的作用，使果胶更容易受到病原体产生的酶的作用。本综述重点介绍了果胶甲酯化在植物-病原体相互作用中的影响，以及在发病过程中其变化的动态作用。
