Beijing Advanced Innovation Center for Breeding by Molecular Design, Beijing Forestry University, No. 35, Qinghua East Road, Haidian District, Beijing 100083, China.
Beijing Academy of Forestry and Pomology Sciences No. 12 A Rui Wang Fen, Fragrance Hills Haidian District, Beijing 100093, China.
Int J Mol Sci. 2020 Jan 10;21(2):441. doi: 10.3390/ijms21020441.
Allotriploid poplar has a prominent vegetative growth advantage that impacts dramatically on lumber yield. The growth regulation is complex which involves abundant genes, metabolic and signaling pathways, while the information about the functional control process is very little. We used high-throughput sequencing and physiological index measurement to obtain a global overview of differences between allotriploid and diploid . The genes related to plant growth advantage show a higher expression compared to diploid, and most of them are revolved around hormones, photosynthesis and product accumulation. Thus, allotriploid showed more efficient photosynthesis, carbon fixation, sucrose and starch synthesis, and metabolism as well as augmented biosynthesis of auxin, cytokinin, and gibberellin. These data enable the connection of metabolic processes, signaling pathways, and specific gene activity, which will underpin the development of network models to elucidate the process of triploid advantage growth.
三倍体杨树具有显著的营养生长优势，对木材产量有显著影响。生长调控非常复杂，涉及大量基因、代谢和信号通路，而关于功能调控过程的信息却非常有限。我们利用高通量测序和生理指标测量，全面比较了三倍体和二倍体之间的差异。与二倍体相比，与生长优势相关的基因表达更高，其中大多数基因与激素、光合作用和产物积累有关。因此，三倍体表现出更高的光合作用、碳固定、蔗糖和淀粉合成以及代谢能力，同时生长素、细胞分裂素和赤霉素的生物合成也得到了增强。这些数据使代谢过程、信号通路和特定基因活性之间的联系成为可能，这将为阐明三倍体优势生长过程的网络模型的发展提供基础。
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