Zea mays

Physiological quality and gene expression related to heat-resistant proteins at different stages of development of maize seeds

T. Andrade, Von Pinho, E. V. R., Von Pinho, R. G., Oliveira, G. E., Andrade, V., and Fernandes, J. S., Physiological quality and gene expression related to heat-resistant proteins at different stages of development of maize seeds, vol. 12, pp. 3630-3642, 2013.

We quantified and characterized the expression of heat-resistant proteins during seed development of maize lines with distinct levels of tolerance to high drying temperature. A corn field was planted for multiplication of seeds of different lines, two tolerant and two non-tolerant to high drying temperatures. Harvest of the seeds was carried out at various stages of development and they were then subjected to tests of moisture content, germination, first count of germination, accelerated aging, and cold test.

Efficiency of RAPD versus SSR markers for determining genetic diversity among popcorn lines

A. A. Leal, Mangolin, C. A., Júnior, A. Tdo Amaral, Gonçalves, L. S. A., Scapim, C. A., Mott, A. S., Eloi, I. B. O., Cordovés, V., and da Silva, M. F. P., Efficiency of RAPD versus SSR markers for determining genetic diversity among popcorn lines, vol. 9, pp. 9-18, 2010.

Using only one type of marker to quantify genetic diversity generates results that have been questioned in terms of reliability, when compared to the combined use of different markers. To compare the efficiency of the use of single versus multiple markers, we quantified genetic diversity among 10 S7 inbred popcorn lines using both RAPD and SSR markers, and we evaluated how well these two types of markers discriminated the popcorn genotypes.

Genome-wide analysis of cyclins in maize (Zea mays)

X. Hu, Cheng, X., Jiang, H., Zhu, S., Cheng, B., and Xiang, Y., Genome-wide analysis of cyclins in maize (Zea mays), vol. 9, pp. 1490-1503, 2010.

Cyclins are primary regulators of the activity of cyclin-dependent kinases and play crucial roles in cell cycle progression in eukaryotes. Although extensive studies have revealed the roles of some cyclins and underlying mechanisms in plants, relatively few cyclins have been functionally analyzed in maize. We identified 59 cyclins in the maize genome, distributed on 10 chromosomes; these were grouped into six types by phylogenetic analysis. The cyclin genes in the maize genome went through numerous tandem gene duplications on five chromosomes.

Subscribe to Zea mays