Negative evidence of local adaptation to the establishment conditions in a perennial herb

Garrido, José Luis Hernando; Rey, Pedro J.; Herrera, Carlos M.; Ramı́rez, José M.

doi:10.1007/s11258-012-0111-8

Cited by 13 publications

(11 citation statements)

References 66 publications

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“…The absence of local adaptation has also been reported in other plant species, such as Carlina vulgaris [32], Crotalaria pallida [33], Stipa capillata [34] and Helleborus foetidus [35]. Each of these studies provided different explanations for the lack of local adaptation.…”

Section: Discussionmentioning

confidence: 79%

Mycorrhizal Symbiosis and Local Adaptation in Aster amellus: A Field Transplant Experiment

2014

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Many plant populations have adapted to local soil conditions. However, the role of arbuscular mycorrhizal fungi is often overlooked in this context. Only a few studies have used reciprocal transplant experiments to study the relationships between soil conditions, mycorrhizal colonisation and plant growth. Furthermore, most of the studies were conducted under controlled greenhouse conditions. However, long-term field experiments can provide more realistic insights into this issue. We conducted a five-year field reciprocal transplant experiment to study the relationships between soil conditions, arbuscular mycorrhizal fungi and plant growth in the obligate mycotrophic herb Aster amellus. We conducted this study in two regions in the Czech Republic that differ significantly in their soil nutrient content, namely Czech Karst (region K) and Ceske Stredohori (region S). Plants that originated from region S had significantly higher mycorrhizal colonisation than plants from region K, indicating that the percentage of mycorrhizal colonisation has a genetic basis. We found no evidence of local adaptation in Aster amellus. Instead, plants from region S outperformed the plants from region K in both target regions. Similarly, plants from region S showed more mycorrhizal colonisation in all cases, which was likely driven by the lower nutrient content in the soil from that region. Thus, plant aboveground biomass and mycorrhizal colonisation exhibited corresponding differences between the two target regions and regions of origin. Higher mycorrhizal colonisation in the plants from region with lower soil nutrient content (region S) in both target regions indicates that mycorrhizal colonisation is an adaptive trait. However, lower aboveground biomass in the plants with lower mycorrhizal colonisation suggests that the plants from region K are in fact maladapted by their low inherent mycorrhizal colonization. We conclude that including mycorrhizal symbiosis in local adaptation studies may increase our understanding of the mechanisms by which plants adapt to their environment.

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Section: Discussionmentioning

confidence: 79%

Mycorrhizal Symbiosis and Local Adaptation in Aster amellus: A Field Transplant Experiment

2014

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“…Nevertheless, considering seed or seedling size can somewhat account for maternal effects (Garrido et al. ).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, under field conditions, it is realistic to include such effects in any assessment of adaptation, given that selection in the field will act on all components of phenotypic variation (Carter and Blair 2012). Nevertheless, considering seed or seedling size can somewhat account for maternal effects (Garrido et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Extensive variation, but not local adaptation in an Australian alpine daisy

Hirst

Sexton

Hoffmann

2016

Ecology and Evolution

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Alpine plants often occupy diverse habitats within a similar elevation range, but most research on local adaptation in these plants has focused on elevation gradients. In testing for habitat‐related local adaptation, local effects on seed quality and initial plant growth should be considered in designs that encompass multiple populations and habitats. We tested for local adaptation across alpine habitats in a morphologically variable daisy species, Brachyscome decipiens, in the Bogong High Plains in Victoria, Australia. We collected seed from different habitats, controlled for maternal effects through initial seed size estimates, and characterized seedling survival and growth in a field transplant experiment. We found little evidence for local adaptation for survival or plant size, based on three adaptation measures: Home versus Away, Local versus Foreign, and Sympatric versus Allopatric (SA). The SA measure controlled for planting site and population (site‐of‐origin) effects. There were significant differences due to site‐of‐origin and planting site effects. An important confounding factor was the size of plants directly after transplantation of seedlings, which had a large impact on subsequent seedling survival and growth. Initial differences in plant width and height influenced subsequent survival across the growing season but in opposing directions: wide plants had higher survival, but tall plants had lower survival. In an additional controlled garden experiment at Cranbourne Royal Botanic Gardens, site‐of‐origin effects detected in the field experiments disappeared under more benign homogeneous conditions. Although B. decipiens from different source areas varied significantly when grown across a range of alpine habitats, these differences did not translate into a local or habitat‐related fitness advantage. This lack of local advantage may signal weak past selection, and/or weak adaptive transgeneration (plasticity) effects.

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“…Plants exhibit many morphological and physiological adaptations to cope with this environmental stress [5]. Local adaptation is a key step in the process of diversification of species [6]. Specifically, while at broad spatial scales the climate plays a preponderant role, at smaller spatial scales, physical and chemical soil properties may represent a key factor for local adaptation [7], particularly on early life stages, as seedling emergence and survival [8].…”

mentioning

confidence: 99%

Climate Change and Initial Seedling Recruitment in Mediterranean Forest: The Role of Seed Origin

Lucas‐Borja¹

2016

Forest Res

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Negative evidence of local adaptation to the establishment conditions in a perennial herb

Cited by 13 publications

References 66 publications

Mycorrhizal Symbiosis and Local Adaptation in Aster amellus: A Field Transplant Experiment

Mycorrhizal Symbiosis and Local Adaptation in Aster amellus: A Field Transplant Experiment

Extensive variation, but not local adaptation in an Australian alpine daisy

Climate Change and Initial Seedling Recruitment in Mediterranean Forest: The Role of Seed Origin

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