期刊
MOLECULAR GENETICS AND GENOMICS
卷 292, 期 6, 页码 1247-1256出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00438-017-1344-y
关键词
Whole genome duplication; Chlorophyll synthesis/degradation; Photosynthesis capacity; Growth ratio; Adaptation
资金
- National Science Fund for Distinguished Young Scholars [31425022]
- Jiangsu Province Programs of Innovation and Entrepreneurship Talents
- Fundamental Research Funds for the Central Universities [KYTZ201401]
- Priority Academic Program Development of Jiangsu Higher Education
Whole genome duplication has a major effect on the phenotype and physiology of higher plants. A comparison between the diploid and tetraploid forms of Chrysanthemum nankingense showed that the latter's leaf contained a higher content of chlorophyll a/b and harbored a larger number of chloroplasts per cell, leading to an enhancement in its photosynthetic capacity and an improved level of productivity with respect to biomass. A transcriptomic analysis of the two ploidy level forms revealed 21,559 differentially transcribed genes. Compared with diploid progenitor, a number of genes associated with chlorophyll synthesis and those encoding components of photosystems I and II were up-regulated in the tetraploid form, while those associated with chlorophyll degradation were down-regulated. These results indicated that whole genome duplication can directly affect chlorophyll synthesis/degradation and photosynthesis pathways associated with plant growth ratio and biomass accumulation.
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