González-Sánchez José de Jesús, Santiago-Sandoval Itzel, Lara-González José Antonio, Colchado-López Joel, Cervantes Cristian R, Vélez Patricia, Reyes-Santiago Jerónimo, Arias Salvador, Rosas Ulises
Jardín Botánico, Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico.
Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.
Front Plant Sci. 2021 Oct 8;12:750623. doi: 10.3389/fpls.2021.750623. eCollection 2021.
Genetic mechanisms controlling root development are well-understood in plant model species, and emerging frontier research is currently dissecting how some of these mechanisms control root development in cacti. Here we show the patterns of root architecture development in a gradient of divergent lineages, from populations to species in . First, we show the patterns of variation in natural variants of the species . Then we compare this variation to closely related species within the Series in (diverging for the last 2.1 million years) in which is inserted. Finally, we compared these patterns of variation to what is found in a set of species belonging to different Series (diverging for the last 8 million years). When plants were grown in controlled environments, we found that the variation in root architecture observed at the intra-specific level, partially recapitulates the variation observed at the inter-specific level. These phenotypic outcomes at different evolutionary time-scales can be interpreted as macroevolution being the cumulative outcome of microevolutionary phenotypic divergence, such as the one observed in accessions and species.
在植物模式物种中，控制根系发育的遗传机制已得到充分了解，而新兴的前沿研究正在剖析其中一些机制如何控制仙人掌的根系发育。在这里，我们展示了从种群到物种的不同谱系梯度中根系结构发育的模式。首先，我们展示了该物种自然变体的变异模式。然后，我们将这种变异与（在过去210万年中分化）的系列内密切相关的物种进行比较，其中插入了 。最后，我们将这些变异模式与一组属于不同系列（在过去800万年中分化）的物种中发现的模式进行比较。当植物在受控环境中生长时，我们发现种内水平观察到的根系结构变异部分概括了种间水平观察到的变异。在不同进化时间尺度上的这些表型结果可以解释为宏观进化是微观进化表型分歧的累积结果，例如在 种质和物种中观察到的那样。
