A novel Dreb2-type gene from Carica papaya confers tolerance under abiotic stress

作者：Arroyo Herrera Ana; Figueroa Yanez Luis; Castano Enrique; Santamaria Jorge; Pereira Santana Alejandro; Espadas Alcocer Jorge; Sanchez Teyer Felipe; Espadas Gil Francisco; David Alcaraz Luis; Lopez Gomez Rodolfo; Sanchez Calderon Lenin; Carlos Rodriguez Zapata Luis

来源：Plant Cell, Tissue and Organ Culture, 2016, 125(1): 119-133.

DOI：10.1007/s11240-015-0934-9

• Abiotic stress tolerance
• Carica papaya
• DREB2-type gene
• Transcription factor

The ethylene-responsive element-binding factors AP2/ERF compose one of the largest families of transcription factors in plants. Dreb2-type gene from Carica papaya L. cv. Maradol was found to be a member of the AP2/ERF family and contains a conserved APETALA 2 (AP2) domain located within the group IV of the AP2/ERF superfamily. CpDreb2-type gene is differentially expressed under stress by extreme temperatures. Moreover, genetic transformation of tobacco plants that overexpress the CpDreb2-type gene showed an increase amount of proline and a greater tolerance level to low and high temperature as well as drought experiments. CpDREB2-type protein::GFP is localized mainly in the nuclei of cells from specific organs such as roots and leaves in tobacco seedlings. Our results indicate that CpDreb2-type gene can be used to gain tolerance to extreme conditions of temperature and drought in other plants.

• 出版日期2016-4