Dextran as an elicitor of phenylpropanoid and flavonoid biosynthesis in tomato fruit against gray mold infection
Dextran as an elicitor of phenylpropanoid and flavonoid biosynthesis in tomato fruit against gray mold infection
复制标题
右旋糖酐作为番茄果实中苯丙素和类黄酮生物合成的诱导剂以对抗灰霉病感染
DOI：
10.1016/j.carbpol.2019.115236
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发表时间：
2019
影响因子：
11.2
通讯作者：
Qiao Liping
中科院分区：
文献类型：
--
作者：
Lu Laifeng;Ji Lifeng;Shi Ruixi;Li Shuhua;Zhang Xi;Guo Qingbin;Wang Changlu;Qiao Liping
α-1，3-葡聚糖通常在致病性丝状真菌细胞壁的表面上合成，以阻断宿主植物酶产生的病原体相关分子模式（PAMP）和随后的植物免疫系统应答。在这里，灰葡萄孢菌的易感性进行了评估，番茄果实，以确定水果是否可以识别这种伪装，并安装一个免疫反应it. Results结果表明，局部机械伤口处理葡聚糖和海带多糖，除了支链淀粉，可以局部，然后全身激活抗病性againstB。番茄果实中的灰霉病葡聚糖处理有效地引起果实胼胝质沉积和苯丙素类和类黄酮的生物合成，在更大程度上比α-葡聚糖酶活性相对于模拟组表面伤口。酶解该多糖有助于提高植物的抗病性。总而言之，这些结果表明番茄果实可以将α-1，3-葡聚糖视为一种PAMP，但降解它的能力有限。
Alpha-1,3-glucan is often synthesized on the surface of pathogenic filamentous fungi cell walls to block pathogen-associated molecular patterns (PAMPs) generation by host plant enzymes and the subsequent immune system response of the plant. Here,Botrytis cinereasusceptibility was assessed in tomato fruit to determine whether the fruit could recognize this camouflage and mount an immune response to it. The results showed that local mechanical wounds treated with dextran and laminarin, except amylopectin, could locally and then systemically activate disease resistance againstB. cinereainfection in tomato fruit. Dextran treatment effectively elicited fruit callose deposition and phenylpropanoid and flavonoid biosynthesis to a greater extent than α-glucanase activity relative to the mock group surface wounds. Enzymatic hydrolysis of this polysaccharide provided some help in improving host disease resistance. Taken together, these results demonstrate that tomato fruit can perceive α-1,3-glucan as a kind of PAMPs but have limited ability to degrade it.