Elucidating genomic regions determining enhanced leaf growth and delayed senescence in elevated CO<sub>2</sub>

Rae, Anne M.; Ferris, Rachel; Tallis, Matthew J.; Taylor, Gail

doi:10.1111/j.1365-3040.2006.01545.x

Cited by 58 publications

(73 citation statements)

References 61 publications

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“…However, there is little evidence for non-selective constraints on SR, whereas selection explains the precise position of modes in the trait distribution and the association with growth form. Although the molecular mechanisms have not been identified, plants exhibit the ability to fine-tune SR through independent control of upper and lower stomatal densities: loci capable of generating intermediate SR phenotypes occur spontaneously during mutagenesis [45], segregate among natural populations [24,46,47] and are fixed between closely related species [25,48]. That such intermediate phenotypes are rare in nature implicates selective constraint.…”

Section: Discussionmentioning

confidence: 99%

Making pore choices: repeated regime shifts in stomatal ratio

Muir¹

2015

Proc. R. Soc. B.

108

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Ecologically important traits do not evolve without limits. Instead, evolution is constrained by the set of available and viable phenotypes. In particular, natural selection may only favour a narrow range of adaptive optima constrained within selective regimes. Here, I integrate data with theory to test whether selection explains phenotypic constraint. A global database of 599 plant species from 94 families shows that stomatal ratio, a trait affecting photosynthesis and defence against pathogens, is highly constrained. Most plants have their stomata on the lower leaf surface (hypostomy), but species with half their stomata on each surface (amphistomy) form a distinct mode in the trait distribution. A model based on a trade-off between maximizing photosynthesis and a fitness cost of upper stomata predicts a limited number of adaptive solutions, leading to a multimodal trait distribution. Phylogenetic comparisons show that amphistomy is the most common among fast-growing species, supporting the view that CO 2 diffusion is under strong selection. These results indicate that selective optima stay within a relatively stable set of selective regimes over macroevolutionary time.

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Section: Discussionmentioning

confidence: 99%

Making pore choices: repeated regime shifts in stomatal ratio

Muir¹

2015

Proc. R. Soc. B.

108

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“…51 AGL16 is a member of the MADS box protein family, which mRNA is targeted for sequence-specific degradation by the microRNA miR824. Additionally several potential quantitative trait loci have been also identified in poplar 52,53 and thus it seems reasonable to assume that leaf traits may be robust enough to be developed as markers for accelerated breeding programs, offering another research approach to increase crop yield.…”

Section: Cross Talk Between Aba and The "Clock"mentioning

confidence: 99%

Control of stomatal aperture

Araújo

Fernie

Nunes‐Nesi

2011

Plant Signaling & Behavior

102

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“…P. alba is mainly restricted to lowland flood-plain forests, whereas P. tremula preferentially occurs in mixed upland habitats (Adler et al, 1994). Species can be readily identified by leaf morphological characters (Lexer et al, 2009), which are often associated with biomass accumulation and growth (Rae et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Admixture mapping of quantitative traits in Populus hybrid zones: power and limitations

et al. 2013

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Uncovering the genetic architecture of species differences is of central importance for understanding the origin and maintenance of biological diversity. Admixture mapping can be used to identify the number and effect sizes of genes that contribute to the divergence of ecologically important traits, even in taxa that are not amenable to laboratory crosses because of their long generation time or other limitations. Here, we apply admixture mapping to naturally occurring hybrids between two ecologically divergent Populus species. We map quantitative trait loci for eight leaf morphological traits using 77 mapped microsatellite markers from all 19 chromosomes of Populus. We apply multivariate linear regression analysis allowing the modeling of additive and non-additive gene action and identify several candidate genomic regions associated with leaf morphology using an information-theoretic approach. We perform simulation studies to assess the power and limitations of admixture mapping of quantitative traits in natural hybrid populations for a variety of genetic architectures and modes of gene action. Our results indicate that (1) admixture mapping has considerable power to identify the genetic architecture of species differences if sample sizes and marker densities are sufficiently high, (2) modeling of non-additive gene action can help to elucidate the discrepancy between genotype and phenotype sometimes seen in interspecific hybrids, and (3) the genetic architecture of leaf morphological traits in the studied Populus species involves complementary and overdominant gene action, providing the basis for rapid adaptation of these ecologically important forest trees.

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Elucidating genomic regions determining enhanced leaf growth and delayed senescence in elevated CO₂

Abstract: ABSTRACT

Cited by 58 publications

References 61 publications

Making pore choices: repeated regime shifts in stomatal ratio

Making pore choices: repeated regime shifts in stomatal ratio

Control of stomatal aperture

Admixture mapping of quantitative traits in Populus hybrid zones: power and limitations

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Elucidating genomic regions determining enhanced leaf growth and delayed senescence in elevated CO2

Abstract: ABSTRACT

Cited by 58 publications

References 61 publications

Making pore choices: repeated regime shifts in stomatal ratio

Making pore choices: repeated regime shifts in stomatal ratio

Control of stomatal aperture

Admixture mapping of quantitative traits in Populus hybrid zones: power and limitations

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Product

Resources

About

Elucidating genomic regions determining enhanced leaf growth and delayed senescence in elevated CO₂