Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata DOI Creative Commons
João Costa e Silva, BM Potts, Suzanne M. Prober

и другие.

Perspectives in Plant Ecology Evolution and Systematics, Год журнала: 2023, Номер 62, С. 125765 - 125765

Опубликована: Ноя. 29, 2023

Understanding how functional traits affect plant performance and fitness is a key step in unravelling the role of natural selection shaping evolutionary trajectory populations. We examined early-age acting on leaf via their effects growth fitness, measured Eucalyptus ovata trees planted common-garden field trial embedded reforestation planting Tasmania, Australia. focused two important - stomatal length specific area (SLA) years after planting, compared interplanted E. groups originating from dry wet home-site climates, with site having intermediate long-term mean annual rainfall. Two-year height was used as attribute, time-averaged tree survival over subsequent six component. There evidence for performance-based traits, strength form depending trait climate group being considered. In this sense, operated mainly where combination directional (favouring longer stomata) stabilizing detected, whereas acted only SLA purely stabilizing. Estimates correlational were not statistically significant. For both groups, estimates fitness-based gradients provided significant (but quadratic) performance, favouring individuals faster growth, but did indicate statistical support direct survival, conditional performance. These results validated qualitative inferences analysis, suggested that appeared to be mediated by which turn directly influenced later-age survival. discuss mechanisms focal may have affected likely factors contributing different patterns phenotypic observed experiencing same environment. also provide expressions analytical derivatives developed estimation based logistic regression model relating binary response linear nonlinear covariate terms target regressor variables.

Язык: Английский

Identifying the proximate mechanisms that generate variation in nutritional plasticity for fecundity inDrosophila melanogaster DOI Creative Commons
André Nogueira Alves, Avishikta Chakraborty, Mia Wansbrough

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Март 8, 2023

Abstract Nutrition is an important determinant of animal’s survival and fitness. Phenotypic plasticity allows a genotype to adjust life history traits changes in its nutritional environment, it varies among individuals. The origin this variation comes from differences proximate mechanisms regulating trait expression. To understand how achieved, we made use Drosophila melanogaster isogenic panel characterize for fecundity by feeding flies diets differing their yeast content counting the number eggs produced. We then identified lines with highest lowest plastic responses diet, dissected potential responsible these plasticity, including morphology, behaviour, physiology. Our results suggest that not due ovariole number, but both increased food intake, higher efficiency at converting into eggs. show that, population D. , behaviour physiology, underlies fecundity. Further, they set stage future studies aiming generate genetic contribute population’s persistence when faced environmental changes.

Язык: Английский

Процитировано

0
Combined empirical techniques reveal key role for variation in plasticity in a novel environment DOI Open Access
Regan L. Cross, Hana C. Thompson

New Phytologist, Год журнала: 2023, Номер 239(1), С. 10 - 12

Опубликована: Апрель 25, 2023

This article is a Commentary on Walter et al . (2023), 239 : 374–387

Язык: Английский

Процитировано

0
Performance-based inference of selection on stomatal length and specific leaf area varies with climate-of-origin of the forest tree, Eucalyptus ovata DOI Creative Commons
João Costa e Silva, BM Potts, Suzanne M. Prober

и другие.

Perspectives in Plant Ecology Evolution and Systematics, Год журнала: 2023, Номер 62, С. 125765 - 125765

Опубликована: Ноя. 29, 2023

Understanding how functional traits affect plant performance and fitness is a key step in unravelling the role of natural selection shaping evolutionary trajectory populations. We examined early-age acting on leaf via their effects growth fitness, measured Eucalyptus ovata trees planted common-garden field trial embedded reforestation planting Tasmania, Australia. focused two important - stomatal length specific area (SLA) years after planting, compared interplanted E. groups originating from dry wet home-site climates, with site having intermediate long-term mean annual rainfall. Two-year height was used as attribute, time-averaged tree survival over subsequent six component. There evidence for performance-based traits, strength form depending trait climate group being considered. In this sense, operated mainly where combination directional (favouring longer stomata) stabilizing detected, whereas acted only SLA purely stabilizing. Estimates correlational were not statistically significant. For both groups, estimates fitness-based gradients provided significant (but quadratic) performance, favouring individuals faster growth, but did indicate statistical support direct survival, conditional performance. These results validated qualitative inferences analysis, suggested that appeared to be mediated by which turn directly influenced later-age survival. discuss mechanisms focal may have affected likely factors contributing different patterns phenotypic observed experiencing same environment. also provide expressions analytical derivatives developed estimation based logistic regression model relating binary response linear nonlinear covariate terms target regressor variables.

Язык: Английский

Процитировано

0