Ecological effects on phenotypic,cytological and biochemical diversity of Cornus officinalis germplasm resources in China and USA |
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| Affiliation: | 1. College of Life Sciences, Shaanxi Normal University, Xi''an 710062, China;2. National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, Xi''an, Shaanxi 710062, China;3. Meteorological Bureau of Shaanxi Province, Xi''an 710014, China;1. Department of Biology Education, Seowon University, Cheongju 361-742, Republic of Korea;2. BioC, GReB, Botanic Institute of Barcelona (IBB-CSIC-ICUB), Passeig del Migdia s/n, Barcelona 08038, Spain;3. Department of Biology and the Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, Republic of Korea;1. College of Landscape Architecture, Beijing Forestry University, Beijing 100083, China;2. National Flower Engineering Research Centre, Key Laboratory for the Genetics and Breeding of Forest Trees and Ornamental Plants, Beijing 100083, China;3. Forestry Department of Shaanxi Province, Xian 710082, China |
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| Abstract: | Cornus officinalis is a small deciduous tree with significant medicinal values. To explore the ecological effects on phenotypic, cytological and biochemical diversity of medicinal plants, we estimated the loganin content, C-values and fruit and seed phenotypic traits of 80 C. officinalis germplasms collected from across three genuine producing areas of China and Madison, USA. Our results showed that most fruit and seed phenotypic traits of C. officinalis germplasms from Madison, USA were significantly larger than those from China, but the loganin contents and 2C values of germplasms from China (0.9% and 5.92 pg) were significantly higher than those from Madison (0.6% and 5.29 pg) (P < 0.01). These data highlight the fact that there was a tight association between temperature, precipitation and loganin content in C. officinalis. Based on the above results, we found that C. officinalis had a tendency to decline in genome size (GS) and loganin content during the long period of adaptation and evolution with new ecological variables. We are able to presume that the ecological variable is the key factor in determining phenotypic diversity, GS and active ingredient of medicinal plants. |
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| Keywords: | C-value Genome size Ecological variable Flow cytometry Loganin |
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