Differential expression of two type-A response regulators in plants and cell cultures of Catharanthus roseus (L.) G. Don | Zendy

Nicolas Papon | Zendy

Open Access

Differential expression of two type-A response regulators in plants and cell cultures of Catharanthus roseus (L.) G. Don

Author(s) -

Nicolas Papon

Publication year - 2003

Publication title -

journal of experimental botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.616

H-Index - 242

eISSN - 1460-2431

pISSN - 0022-0957

DOI - 10.1093/jxb/erg185

Subject(s) - catharanthus roseus , biology , arabidopsis thaliana , complementary dna , cytokinin , zeatin , cell culture , gene expression , microbiology and biotechnology , gene , botany , biochemistry , genetics , auxin , mutant

Two full-length cDNAs named CrRR2 and CrRR3 have been isolated by PCR from a C. roseus cDNA library. The first one encodes a 154 amino acid putative protein with a high percentage of identity with the Arabidopsis thaliana response regulators ARR16 and ARR17, and is not expressed in C. roseus organs and cell cultures. The second one encodes a 188 amino acid ORF sharing the highest homologies with the A. thaliana ARR8 and ARR9 response regulators. Its expression is root-specific and the transcripts are transiently up-regulated after trans-zeatin treatment in C. roseus suspension cells. CrRR3 protein might be involved in the cytokinin-enhanced alkaloid production in C. roseus cell cultures.

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