Mechanism of Arabidopsis Short Peptide Hormones PROPEP Gene Family in the Root Growth

doi:10.11983/CBB15088

Abstract

Abstract: AtPROPEP is a 7-member gene family in the Arabidopsis genome that encodes an endogenous peptide hormone. The C-terminal of the encoded proteins, about 23 amino acids, can be recognized by the corresponding receptors AtPEPR1 and AtPEPR2, which in turn evoke downstream cascades. Whether AtPROPEP2-6 respond to jasmonic acid and salicylic acid is unknown, as is their roles in root development. In this study, GUS staining and quantitative RT-PCR revealed that AtPROPEP2-6 expression had various responses to jasmonic acid and salicylic acid treatments, which implies their roles in innate immunity. In addition, Arabidopsis overexpressing AtPROPEP3 and AtPROPEP4 had significant longer roots than did the wild type.

Key words: Arabidopsis, AtPROPEP, root, peptide, jasmonic acid, salicylic acid

Dongmei Li, Luya Wang, Lanyue Zhang, Ziyang Tie, Huiping Mao. Mechanism of Arabidopsis Short Peptide Hormones PROPEP Gene Family in the Root Growth[J]. Chinese Bulletin of Botany, 2016, 51(2): 202-209.

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URL: https://www.chinbullbotany.com/EN/10.11983/CBB15088

https://www.chinbullbotany.com/EN/Y2016/V51/I2/202

Figures/Tables 7

References 16

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