Shimizu-Inatsugi Rie, Morishima Aki, Mourato Beatriz, Shimizu Kentaro K, Sato Yasuhiro
Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland.
Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan.
Front Plant Sci. 2023 Jan 4;13:1058522. doi: 10.3389/fpls.2022.1058522. eCollection 2022.
The phenotypic variation of vegetative organs and reproductive organs of newly synthesized and natural genotypes was investigated in both a controlled environment and a natural environment in an experimental garden. When we compared the variation of their leaf shape as a vegetative organ, the synthetic individuals grown in the garden showed larger variation compared with the individuals incubated in a growth chamber, suggesting enhanced phenotypic variation in a natural fluctuating environment. In contrast, the natural genotypes did not show significant change in variation by growth condition. The phenotypic variation of floral organs by growth condition was much smaller in both synthetic and natural genotypes, and the difference in variation width between the growth chamber and the garden was not significant in each genotype as well as among genotypes. The higher phenotypic variation in synthetic leaf may imply flexible transcriptomic regulation of a newly synthesized polyploid compared with a natural polyploid.
在实验园的可控环境和自然环境中，对新合成基因型和天然基因型的营养器官及生殖器官的表型变异进行了研究。当我们比较作为营养器官的叶片形状变异时，在园中生长的合成个体与在生长室中培养的个体相比表现出更大的变异，这表明在自然波动环境中表型变异增强。相比之下，天然基因型在不同生长条件下变异没有显著变化。在合成基因型和天然基因型中，花器官的表型变异在不同生长条件下都小得多，并且在每个基因型以及不同基因型之间，生长室和园中的变异宽度差异均不显著。合成叶片中较高的表型变异可能意味着与天然多倍体相比，新合成的多倍体具有灵活的转录组调控。
