Light spectra affect the in vitro shoot development of Cedrela fissilis Vell. (Meliaceae) by changing the protein profile and polyamine contents

• Published in: Biochimica et biophysica acta. Proteins and proteomics Vol. 1868; no. 12; p. 140529
• Main Authors: Oliveira, Tadeu dos Reis, Aragão, Victor Paulo Mesquita, Moharana, Kanhu Charan, Fedosejevs, Eric, do Amaral, Fernanda Plucani, Sousa, Kariane Rodrigues, Thelen, Jay J., Venâncio, Thiago Motta, Silveira, Vanildo, Santa-Catarina, Claudete
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01-12-2020
• Subjects: Cedrela - growth & development; Cedrela - physiology; Cedrela - radiation effects; FASTA databank generation; Germination; in vitro morphogenesis; Light; Light-emitting diode lamp; Mass Spectrometry; Plant Development - radiation effects; Plant Shoots - growth & development; Plant Shoots - physiology; Plant Shoots - radiation effects; Polyamines; Polyamines - metabolism; Proteome - radiation effects; Proteomics; Proteomics - methods; RNA-seq; FASTA databank generation; UVR8; ACC; PAs; DTT; ASSY; Spd; FM; DM; LED; in vitro morphogenesis; Polyamines; ACO; Put; ACS; Spm; SAMS; TCA; RNA-seq; Light-emitting diode lamp; Proteomics; UBC; PAP; BA
• ISSN: 1570-9639; 1878-1454
• DOI: 10.1016/j.bbapap.2020.140529

The light spectrum quality is an important signal for plant growth and development. We evaluated the effects of different light spectra on the in vitro shoot development of Cedrela fissilis and its proteomic and polyamine (PA) profiles. Cotyledonary and apical nodal segments were grown under different light emitting diodes (LED) and fluorescent lamps. Shoots from cotyledonary nodal segments cultured with 6-benzyladenine (BA) that were grown under WmBdR LED showed increased length and higher fresh and dry matter compared to shoots grown under fluorescent lamps. A nonredundant protein databank generated by transcriptome sequencing and the de novo assembly of C. fissilis improved, and almost doubled, the protein identification compared to a Citrus sinensis databank. A total of 616 proteins were identified, with 23 up- and 103 down-accumulated in the shoots under WmBdR LEDs compared to fluorescent lamps. Most differentially accumulated proteins in shoots grown under the WmBdR LED lamp treatment compared to the fluorescent lamp treatment are involved in responding to metabolic processes, stress, biosynthetic and cellular protein modifications, and light stimulus processes. Among the proteins, the up-accumulation of argininosuccinate synthase was associated with an increase in the free putrescine content and, consequently, with higher shoot elongation under WmBdR LED. The down-accumulation of calreticulin, heat shock proteins, plastid-lipid-associated protein, ubiquitin-conjugating enzymes, and ultraviolet-B receptor UVR8 isoform X1 could be related to the longer shoot length noted under LED treatment. This study provides important data related to the effects of the light spectrum quality on in vitro morphogenesis through the modulation of specific proteins and free putrescine biosynthesis in C. fissilis, an endangered wood species from the Brazilian Atlantic Forest of economic and ecological relevance. The nonredundant protein databank of C. fissilis is available via ProteomeXchange under identifier PXD018020.
•Light spectra quality from WmBdR LED lamp treatment affected significantly the growth of shoots and the accumulation of proteins compared to fluorescent lamp•The accumulation of argininosuccinate synthase protein was associated with an increase in free-putrescine content and higher shoot elongation under WmBdR LED lamp•The use of a non-redundant protein databank generated by transcriptome sequencing and de novo assembly of Cedrela fissilis improved the protein identification