tolerance

Water stress adaptation of popcorn roots and association with agronomic traits

S. H. Kamphorst, de Lima, V. J., Schimitt, K. F. M., Leite, J. T., Azeredo, V. C., Pena, G. F., Santos, P. H. A. D., Júnior, D. R. Santos, Júnior, S. B. da Silv, Bispo, R. B., Santos, T. O., Khan, S., and Júnior, A. Tdo Amaral, “Water stress adaptation of popcorn roots and association with agronomic traits”, Genetics and Molecular Research, vol. 17, no. 3, 2018.

Screening relevant genes of tolerance to low phosphorus in maize using cDNA-amplified fragment length polymorphism

H. Y. Jiang, Li, Z., Zhao, J., Ma, Q., Cheng, B. J., and Zhu, S. W., “Screening relevant genes of tolerance to low phosphorus in maize using cDNA-amplified fragment length polymorphism”, vol. 14, pp. 5731-5741, 2015.

Soil contains a large amount of phosphorus, but plants cannot absorb most of this phosphorus effectively. Low inorganic phosphorus has been singled out as a major constraint that leads to a perpetually low Zea mays (maize) grain yield. The fundamental approach to solving this problem is to screen new genes of low phosphorous (LP) tolerance. Consequently, the exploration and utilization of LP-tolerant genes are of great significance in plants. The maize inbred line 178 is an inbred LP-tolerant line.

Genetic and molecular mechanisms of aluminum tolerance in plants

C. C. Simões, Melo, J. O., Magalhães, J. V., and Guimarães, C. T., “Genetic and molecular mechanisms of aluminum tolerance in plants”, vol. 11. pp. 1949-1957, 2012.

Aluminum (Al) toxicity restricts root growth and agricultural yield in acid soils, which constitute approximately 40% of the potentially arable lands worldwide. The two main mechanisms of Al tolerance in plants are internal detoxification of Al and its exclusion from root cells.

Genetic diversity and flooding survival in Aegiphila sellowiana (Lamiaceae), a typical tree species from upland riparian forests

C. Medri, Ruas, E. A., Medri, M. E., Ruas, C. F., Sayhun, S., Medri, P. S., Silva, D. C. G., Bianchini, E., and Ruas, P. M., “Genetic diversity and flooding survival in Aegiphila sellowiana (Lamiaceae), a typical tree species from upland riparian forests”, vol. 10, pp. 1084-1091, 2011.

Saplings of Aegiphila sellowiana were submitted to flooding and analysis of genetic diversity in order to investigate flooding tolerance as well as its genetic determination. This response is important because it means that some lines could be planted in degraded riparian areas. Leaves were sampled from each plant, and they were submitted to different flooding periods. Mortality of saplings was 40, 80, 50, 53.3, 33.3, and 33.3% in flooding for 15, 18, 25, 50, 80 days, and flooding for 50 days followed by re-aeration for 30 days, respectively.

Detection of a resistance gradient to Passion fruit woodiness virus and selection of ‘yellow’ passion fruit plants under field conditions

C. B. M. Cerqueira-Silva, Moreira, C. N., Figueira, A. R., Corrêa, R. X., and Oliveira, A. C., “Detection of a resistance gradient to Passion fruit woodiness virus and selection of ‘yellow’ passion fruit plants under field conditions”, vol. 7, pp. 1209-1216, 2008.

Productivity of ‘yellow’ passion fruit (Passiflora edulis Sims. f. flavicarpa O. Deg.) is reduced by infection with Cowpea aphid-borne mosaic virus (CABMV). We examined resistance in 72 yellow passion fruit plants grown from open-pollinated commercial seed. Plants were mechanically inoculated with CABMV virus and maintained in the field in order to select contrasting genotypes for resistance.

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