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在根结节固化关节中的nsLTPs的识别和演变以及弗兰基亚对AgLTP24的分子反应

Mélanie Gasser¹, Jean Keller², Pascale Fournier¹

¹Universite Claude Bernard Lyon 1, Laboratoire d'Ecologie Microbienne, UMR CNRS 5557, UMR INRAE 1418, VetAgro Sup, 69622, Villeurbanne, France.

Scientific reports

|September 25, 2023

概括

非特异性脂质转移蛋白 (nsLTP) 是关键的抗菌,参与植物根结节固定 (RNF). 这些蛋白质似乎在不同植物系的RNF共生中独立进化了专门的功能.

科学领域:

植物生物学植物生物学
微生物学微生物学
分子生物学分子生物学

背景情况:

非特异性脂质转移蛋白 (nsLTP) 是抗菌,在植物生物学中具有多种作用.
nsLTPs涉及豆类-树枝植物和actinorhizal-Frankia共生,对于根结节固定 (RNF) 至关重要.
之前在豆类中的研究表明nsLTPs调节了共生体的进入,并提高了共生效率.

研究的目的:

调查 nsLTPs 在根结节固定 (RNF) 中的功能和进化史.
探索 nsLTPs 在豆类和动植物共生模型中的作用.
了解nsLTPs在共同演化的RNF植物微生物相互作用中的独立专业化.

主要方法:

在不同RNF植物系的功能性结节与非感染根中的nsLTP基因表达的比较分析.
对 nsLTP 在豆类和actinorhizal 共生中的作用现有文献的综述.
在功能结节中识别上调的nsLTPs.

主要成果:

在功能性结节中,许多nsLTPs与各种RNF类系系中的非感染根相比,具有上调调.
有证据表明nsLTPs在共同进化的植物共生系统中对RNF相互作用的独立专业化.
一种特定的nsLTP,AgLTP24,在actinorhizal共生中被确定,早期分泌并向共生体.

结论:

与固定共生体共同进化的结节植物对这些相互作用有独立的专门nsLTP.
这表明RNF中nsLTP的功能在不同的植物系中可能趋同.
对RNF中nsLTP功能的进一步研究是有必要的,这为研究开辟了新的途径.

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