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1

Influence of forest coverage on basin runoff in China’s Loess Plateau

100%
Wang X., Bi H., Song Q., Lu S.
Polish Journal of Environmental Studies
|
2015
|
tom 24
|
nr 2
In order to reveal the impact of forest coverage on runoff of the basin in the Loess Plateau of China, multi-year observational data were collected from 53 basins located in a typical loess area of the Loess Plateau of China. The impact was investigated using trend analysis, regression fitting, and serial cluster analysis. The results showed that 25% forest coverage is the partition point impacting the mean annual runoff coefficient, dividing the basins into two groups with forest coverage <25% and forest coverage ≥25%. For the former, the correlation between forest coverage and the mean annual runoff coefficient is very weak, while for the latter, the correlations conform to negative exponential function, the correlation is significantly negative at 0.01 level and the correlation coefficient is 0.614, and forest coverage has a relatively large impact on the mean annual runoff coefficient and that the mean annual runoff coefficient decreases significantly as forest coverage increases. Therefore, revegetation within 25% forest coverage will not have a large impact on local water resources, and the results provide some reference for revegetation in areas of the Loess Plateau of China.
2

Transcriptome analysis reveals anthocyanin acts as a protectant in Begonia semperflorens under low temperature

76%
Bi H., Guo M., Wang J., Qu J., Du W., Zhang K.
Acta Physiologiae Plantarum
|
2018
|
tom 40
|
nr 01
Anthocyanins are natural bioactive pigments in plants that play important roles in many physiological functions. They are found in various tissues and can protect plants against different stress conditions. Anthocyanins are synthesized and accumulate in nutritional organs, which is crucial for plants to adapt to and resist adverse environmental conditions, including high exposure to light, ultraviolet light, low temperatures, drought, pests and disease. Some progress has been made in understanding the adaptability of anthocyanin to the external environment. Begonia semperflorens is an excellent model for studying the function and regulation of anthocyanin synthesis. To investigate the biosynthesis and regulation of anthocyanins, RNA sequencing techniques were employed to investigate anthocyanin biosynthesis induced by low temperature in B. semperflorens leaves. A total of 74,779 unigenes with a mean length of 1249 bp were assembled. Functional annotations were implemented using five protein databases. Differentially expressed genes involved in the process of anthocyanin biosynthesis were identified. This study represents the first report of a broad-scale gene expression study on B. semperflorens.
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