National Institute for Basic Biology, Okazaki 444-8585, Japan; email:
Annu Rev Plant Biol. 2014;65:385-413. doi: 10.1146/annurev-arplant-050312-120122.
Cell-to-cell signaling is essential for many processes in plant growth and development, including coordination of cellular responses to developmental and environmental cues. Cumulative studies have demonstrated that peptide signaling plays a greater-than-anticipated role in such intercellular communication. Some peptides act as signals during plant growth and development, whereas others are involved in defense responses or symbiosis. Peptides secreted as signals often undergo posttranslational modification and proteolytic processing to generate smaller peptides composed of approximately 10 amino acid residues. Such posttranslationally modified small-peptide signals constitute one of the largest groups of secreted peptide signals in plants. The location of the modification group incorporated into the peptides by specific modification enzymes and the peptide chain length defined by the processing enzymes are critical for biological function and receptor interaction. This review covers 20 years of research into posttranslationally modified small-peptide signals in plants.
细胞间信号传递对于植物生长和发育的许多过程至关重要，包括协调细胞对发育和环境线索的反应。累积的研究表明，肽信号在这种细胞间通讯中起着超出预期的作用。一些肽在植物生长和发育过程中充当信号，而另一些则参与防御反应或共生。作为信号分泌的肽通常经历翻译后修饰和蛋白水解处理，以产生由大约 10 个氨基酸残基组成的较小肽。这种经翻译后修饰的小肽信号构成了植物中最大的分泌肽信号组之一。由特定修饰酶掺入肽中的修饰基团的位置和由加工酶定义的肽链长度对于生物学功能和受体相互作用至关重要。本综述涵盖了 20 年来对植物中经翻译后修饰的小肽信号的研究。
