SWEET Transporters for the Nourishment of Embryonic Tissues during Maize Germination
Abstract
:1. Introduction
2. Materials and Methods
2.1. In Silico Analysis of the SWEET Family in Maize
2.2. Plant Material
2.3. Determination of the Phases of Germination by Evaluating the Water and Oxygen Uptake
2.4. RNA Extraction
2.5. Determination of ZmSWEET and α-Amylase mRNA Levels by RT-PCR
2.6. Analysis by qPCR of mRNA of ZmSWEET, Malate Synthase, Sucrose Phosphate Synthase, and Sucrose Transporter 1 in Scutellum and Embryo Axis
2.7. Determination of Soluble Sugars, Starch and Lipid Content
2.8. Determination of Cell Wall and Vacuolar Invertase Activity
2.9. Sugar Uptake in Embryonic Tissues
3. Results
3.1. Maize SWEET Family
3.2. Transcripts for Several SWEETs Were Found at the Embryo Axis and the Scutellum During the Germination
3.3. Metabolic Activity during Germination Reveals High Suc Content in Maize Embryonic Tissues
3.4. The Sugar Transport along the Germination in the Embryonic Tissues Is Mainly Diffusional
3.5. The Abundance of Sugars Affects the Embryo Axis ZmSWEET mRNA Content
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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López-Coria, M.; Sánchez-Sánchez, T.; Martínez-Marcelo, V.H.; Aguilera-Alvarado, G.P.; Flores-Barrera, M.; King-Díaz, B.; Sánchez-Nieto, S. SWEET Transporters for the Nourishment of Embryonic Tissues during Maize Germination. Genes 2019, 10, 780. https://doi.org/10.3390/genes10100780
López-Coria M, Sánchez-Sánchez T, Martínez-Marcelo VH, Aguilera-Alvarado GP, Flores-Barrera M, King-Díaz B, Sánchez-Nieto S. SWEET Transporters for the Nourishment of Embryonic Tissues during Maize Germination. Genes. 2019; 10(10):780. https://doi.org/10.3390/genes10100780
Chicago/Turabian StyleLópez-Coria, Montserrat, Tomás Sánchez-Sánchez, Víctor Hugo Martínez-Marcelo, G. Paulina Aguilera-Alvarado, Mireya Flores-Barrera, Beatriz King-Díaz, and Sobeida Sánchez-Nieto. 2019. "SWEET Transporters for the Nourishment of Embryonic Tissues during Maize Germination" Genes 10, no. 10: 780. https://doi.org/10.3390/genes10100780