The seeds of invasion: enhanced germination in invasive European populations of black locust (Robinia pseudoacacia L.) compared to native American populations.
The seeds of invasion: enhanced germination in invasive European populations of black locust (Robinia pseudoacacia L.) compared to native American populations.
复制标题
入侵的种子：与美洲本土种群相比，欧洲入侵刺槐 (Robinia pseudoacacia L.) 种群的发芽率更高。
DOI：
10.1111/plb.13332
复制
发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
S. Mariette
中科院分区：
文献类型：
--
作者：
X. Bouteiller;F. Moret;R. Segura;M. Klisz;A. Martiník;A. Monty;J. Pino;M. van Loo;T. Wojda;A. Porté;S. Mariette
局部适应和表型可塑性的进化可能促进生物入侵。这两个过程都可以增强发芽和幼苗补充，这是植物的重要生活史特征。发芽的速率、时间和速度最近被证明在入侵过程中起着重要作用。刺槐（Robinia pseudoacacia L.）是一种北美树，广泛分布在欧洲。最近的一项研究表明，少数种群是欧洲刺槐的来源。因此，可以将入侵种群与本地种群进行比较，以确定基于遗传的表型分化，从而可以评估表型可塑性的作用。采用数量遗传学方法，对3种不同温度（18 °C、22 °C和31 °C）处理下的刺槐原生种群和入侵种群（3000粒种子，20个种群）的13个幼龄性状进行了研究。结果显示，欧洲种群的发芽率高于美洲原住民种群（88%对60%），即使考虑到种群之间的遗传距离。此外，这一特性表现出较低的可塑性，温度在入侵范围内比在本地的。相反，其他研究的性状表现出较高的可塑性，温度，但他们以类似的方式响应温度升高：温度越高，生长速率或发芽性状值越高。本地和入侵种群之间的遗传分化证明了最大发芽率范围之间的转变。这种模式可能是由于人类介导的刺槐引进。
Local adaptation and the evolution of phenotypic plasticity may facilitate biological invasions. Both processes can enhance germination and seedling recruitment, which are crucial life-history traits for plants. The rate, timing and speed of germination have recently been documented as playing a major role during the invasion process. Black locust (Robinia pseudoacacia L.) is a North American tree, which has spread widely throughout Europe. A recent study demonstrated that a few populations are the source of European black locust. Thus, invasive populations can be compared to native ones in order to identify genetic-based phenotypic differentiation and the role of phenotypic plasticity can thereby be assessed. A quantitative genetics experiment was performed to evaluate 13 juvenile traits of both native and invasive black locust populations (3000 seeds, 20 populations) subjected to three different thermal treatments (18 °C, 22 °C and 31 °C). The results revealed European populations to have a higher germination rate than the native American populations (88% versus 60%), and even when genetic distance between populations was considered. Moreover, this trait showed lower plasticity to temperature in the invasive range than in the native one. Conversely, other studied traits showed high plasticity to temperature, but they responded in a similar way to temperature increase: the warmer the temperature, the higher the growth rate or germination traits values. The demonstrated genetic differentiation between native and invasive populations testifies to a shift between ranges for the maximum germination percentage. This pattern could be due to human-mediated introduction of black locust.
DOI：
10.1002/joc.5086
发表时间：
2017-10-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Fick, Stephen E.;Hijmans, Robert J.
通讯作者：
Hijmans, Robert J.