干旱区生态环境知识资源中心(Arid): Differences in germination response to temperature, salinity, and water potential among Prosopis laevigata populations are guided by the tolerance-exploitation trade-off.

Arid

DOI	10.1016/j.flora.2021.151963
	Differences in germination response to temperature, salinity, and water potential among Prosopis laevigata populations are guided by the tolerance-exploitation trade-off.
	Contreras-Negrete, Gonzalo; Pineda-Garcia, Fernando; Nicasio-Arzeta, Sergio; De la Barrera, Erick; Gonzalez-Rodriguez, Antonio
通讯作者	Gonzalez-Rodriguez, A (corresponding author), Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico.
来源期刊	FLORA
ISSN	0367-2530
EISSN	1618-0585
出版年	2021
卷号	285
英文摘要	Exploring the mechanisms that promote population divergence represents a central point in evolutionary ecology. Along their distribution, species commonly experience contrasting environmental conditions, which impose local selection pressures to which populations tend to adapt resulting, for example, in ways to deal with resource shortage or abundance. In this study, we explored if germination performance varies under different levels temperature, water potential and salinity among populations of Prosopis laevigata, a widespread mesquite species from the arid and semi-arid zones of Mexico. Given the wide distribution of P. laevigata and the sensitivity of germination phase to environmental conditions, we hypothesized the existence of differential responses during this crucial stage of plant development. Thus, we expected germination in populations of P. laevigata from more arid zones to be less sensitive to high temperatures, salinity, and water deficit. Also, we explored if exploitation-tolerance trade-off guides the differentiation of P. laevigata populations in germination performance under varying conditions. Germination of all populations was very sensitive to water scarcity but not to variation in temperature or salinity. We identified two major axes of trait covariation in germination physiology: one defined by tolerance of germination to water and saline stress versus germination velocity, and the other defined by the tolerance to extreme temperatures. We found evidence that variation in tolerance among the populations was related with their distribution along environmental gradients. Overall, populations with a higher capacity germinate under water deficit stress, salinity, and extreme temperatures inhabit warmer and more saline areas. Our study provides strong evidence of existing local adaptations during germination of P. laevigata from across distribution in the arid lands of Mexico.
英文关键词	Arid zones Cardinal temperatures Environmental gradients Hydrotime Local adaptation Mesquite Thermal time
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000721110700001
WOS关键词	SEED HYDRATION MEMORY ; HYDROTHERMAL-TIME ; THERMAL TIME ; INTRASPECIFIC VARIABILITY ; OSMOTIC POTENTIALS ; DROUGHT TOLERANCE ; DESERT ; STRESS ; MODEL ; STRATEGIES
WOS类目	Plant Sciences ; Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374079
作者单位	[Contreras-Negrete, Gonzalo; Nicasio-Arzeta, Sergio; De la Barrera, Erick; Gonzalez-Rodriguez, Antonio] Univ Nacl Autonoma Mexico, Inst Invest Ecosistemas & Sustentabilidad, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico; [Pineda-Garcia, Fernando] Univ Nacl Autonoma Mexico, Unidad Morelia, Escuela Nacl Estudios Super, Antigua Carretera Patzcuaro 8701, Morelia 58190, Michoacan, Mexico
推荐引用方式 GB/T 7714	Contreras-Negrete, Gonzalo,Pineda-Garcia, Fernando,Nicasio-Arzeta, Sergio,et al. Differences in germination response to temperature, salinity, and water potential among Prosopis laevigata populations are guided by the tolerance-exploitation trade-off.[J],2021,285.
APA	Contreras-Negrete, Gonzalo,Pineda-Garcia, Fernando,Nicasio-Arzeta, Sergio,De la Barrera, Erick,&Gonzalez-Rodriguez, Antonio.(2021).Differences in germination response to temperature, salinity, and water potential among Prosopis laevigata populations are guided by the tolerance-exploitation trade-off..FLORA,285.
MLA	Contreras-Negrete, Gonzalo,et al."Differences in germination response to temperature, salinity, and water potential among Prosopis laevigata populations are guided by the tolerance-exploitation trade-off.".FLORA 285(2021).