Plant Cell, Tissue and Organ Culture (PCTOC)

, Volume 136, Issue 2, pp 289–302 | Cite as

Differentially expressed genes during the transition from early to late development phases in somatic embryo of banana (Musa spp. AAB group, Silk subgroup) cv. Manzano

  • Adrián J. Enríquez-Valencia
  • Felipe A. Vázquez-Flota
  • José R. Ku-Cauich
  • Rosa María Escobedo-GraciaMedranoEmail author
Original Article


A cDNA-sequence-related amplified polymorphism (cDNA-SRAP) approach was used to identify relevant genes expressed at the onset of somatic embryo maturation/desiccation in banana (Musa spp. AAB group, Silk subgroup) cv. Manzano. For this, an embryogenic procedure, starting with cell suspensions, was first improved by including a culture period on a free growth-regulator medium for embryo maturation. This produced an up to 95% germination of the coleoptilar embryos. Gene expression patterns were followed through different stages of the process, including immature male flower explants, embryogenic calli, as well as immature, mature and germinated embryos. A total of 151 differentially expressed transcript-derived fragments (TDFs) were detected, sequenced, resulting in the identification of 71 by their similitude to accessions deposited in different data bases. The participation of four of these genes, putatively involved in the banana somatic embryogenesis, was further analyzed by real-time quantitative PCR (q-PCR). This confirmed their preferential expression at the transition from embryo early development to maturation. Noteworthy, tryptophan aminotransferase relate 2 (TAR2), which is involved in the indole-3-pyruvic acid dependent auxin biosynthesis, corresponded to one of the upregulated four genes, suggesting the requirement of this growth regulator at the transition stage. This study opens the path for future in-depth studies of molecular and biochemical events occurring during in vitro somatic embryogenesis in edible bananas.


Banana cDNA-sequence-related amplified polymorphism (cDNA-SRAP) Somatic embryogenesis Somatic embryo maturation Transcript-derived fragments (TDFs) 



The authors thank the following: Ir. I. Van den Houwe, curator of the Musa International Transit Centre at Katolieke Universiteit, Leuven, Belgium, for the supply of plant material; INIFAP-CIR-SURESTE for the field facilities provided for the conservation of the in situ banana collection launched by the CICY at the INIFAP-Uxmal-Experimental Station, Yucatán, Mexico; Dra. Goreti Campos and MC Angela Ku for their technical help with the scanning electron microscopy. This work was supported by the CONACYT fund for Basic Science Research Project # 0060838 (corresponding author) and Studentship # 378177 awarded to the first author.

Author contributions

AJEV performed the experimental work, data analysis, and wrote the manuscript; RMEGM designed and outlined the research, interpreted data and wrote the manuscript. JRCK collaborated in in vitro cultures development, greenhouse acclimatization and transfer to the field. FAVF participated in data interpretation and in editing the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11240_2018_1514_MOESM1_ESM.pdf (214 kb)
Supplementary material 1 (PDF 213 KB)
11240_2018_1514_MOESM2_ESM.pdf (198 kb)
Supplementary material 2 (PDF 198 KB)
11240_2018_1514_MOESM3_ESM.pdf (672 kb)
Supplementary material 3 (PDF 671 KB)


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Unidad de Bioquímica y Biología Molecular de PlantasCentro de Investigación Científica de Yucatán, A.C.MéridaMexico

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