Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 31370599 |
| 猪毛菜属C4木本种及其C3近缘种的C4光合进化研究 | |
| 龚春梅 | |
| 主持机构 | 西北农林科技大学 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 860000(CNY) |
| 项目类别 | 面上项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | More C4 photosynthesis traits have been shown to exist and develop in some C3 desert plants with increasing drought in China in our previous studies, but the evolution process of C4 photosynthesis is still unclear. Chenopodiaceae and Salsola L. is the earliest one of the families and genera for occurrences of C4 plants, and also ranks among the most ecologically pioneer important genera covered species widely distributed in China's desert regions. Therefore, C4 species and its C3 sisters are the excellent materials to discover the evolution of C4 photosynthesis in C3 plants and the origin of C4 photosynthesis in C4 plants .We are going to focus on 11 species in Salsola L.distributed naturally in northwest desert regions, respectively. For newly generated sequences, three genetic markers were PCR amplified in chloroplast genome. The clear and robust molecular phylogeny for 3 species in C4 shrubs and 8 species in their C3 sisters in Salsola L. will be built. Comparative methods were adopted to investigate the conservation and variation of morphological and anatomical characteristics (i.e. stomatal traits, photosynthetic anatomy，pollen and micro-morphological features of seed-coat, physiological traits (i.e. gas exchange and the activities and contents of C4 key enzymes) and ecological parameters (i.e. relative growth rates, leaf longevity, leaf density, specific leaf area, above- and under-biomass, seed size and 1000-seeds weight) between C4 shrubs and C3 sisters. The obtained relationships between C4 shrubs and C3 sisters would provide a clear clarify for the important morphological and anatomical, physiological and ecological elements, and environmental factors during C4 photosynthetic origin using C3 sisters as reference, which will be beneficial to compel to the evolutional experimental of C4 photosynthesis by human-driven according to above parameters and foundation. Meanwhile it would reveal different C4 evolution process among C3 sisters using C4 shrubs as reference, which will be beneficial to define C3 sisters with more evolutionary stage closed to C4 and higher similarity with C4 species in all kinds of characteristics as the potential force of C4 photosynthesis for the recovery and reconstruction across the desert vegetation. |
| 中文关键词 | 猪毛菜属 ; C4木本种 ; C3近缘种 ; C4光合进化 |
| 来源机构 | 西北农林科技大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/345623 |
| 推荐引用方式 GB/T 7714 | 龚春梅.猪毛菜属C4木本种及其C3近缘种的C4光合进化研究.2014. |
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