The Genetic Basis of the Ecological Amplitude of Spartina patens. I. Morphometric and Physiological Traits

Evolution ◽  
1979 ◽  
Vol 33 (4) ◽  
pp. 1114 ◽  
Author(s):  
John A. Silander ◽  
Janis Antonovics
Keyword(s):  
Genetic Basis ◽  
Spartina Patens ◽  
Physiological Traits ◽  
Ecological Amplitude

scholarly journals Indirect genetic control of migration in a salmonid fish

2020 ◽  
Vol 16 (8) ◽  
pp. 20200299
Author(s):  
Suzanne J. Kelson ◽  
Stephanie M. Carlson ◽  
Michael R. Miller
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Genetic Control ◽  
Early Life ◽  
Genetic Basis ◽  
Complex Trait ◽  
Genomic Region ◽  
Physiological Traits ◽  
Migratory Behaviour ◽  
Large Genomic Region

Migration is a complex trait that often has genetic underpinnings. However, it is unclear if migratory behaviour itself is inherited (direct genetic control), or if the decision to migrate is instead the outcome of a set of physiological traits (indirect genetic control). For steelhead/rainbow trout ( Oncorhynchus mykiss ), migration is strongly linked to a large genomic region across their range. Here, we demonstrate a shared allelic basis between early life growth rate and migratory behaviour. Next, we demonstrate that early life growth differs among resident/migratory genotypes in wild juveniles several months prior to migration, with resident genotypes achieving a larger size in their first few months of life than migratory genotypes. We suggest that the genetic basis of migration is likely indirect and mediated by physiological traits such as growth rate. Evolutionary benefits of this indirect genetic mechanism likely include flexibility among individuals and persistence of life-history diversity within and among populations.

Genetic basis of some physiological traits and yield in early and late sowing conditions in bread wheat (Triticum aestivum L.)

2021 ◽  
Author(s):  
Mian Abdur Rehman Arif ◽  
Maryam Liaqat ◽  
Muhammad Imran ◽  
Muhammad Qandeel Waheed ◽  
Anjuman Arif ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Genetic Basis ◽  
Triticum Aestivum L ◽  
Physiological Traits ◽  
Late Sowing

scholarly journals Quantitative trait locus mapping reveals an independent genetic basis for joint divergence in leaf function, life-history, and floral traits between scarlet monkeyflower (Mimulus cardinalis) populations

2020 ◽  
Author(s):  
Thomas C. Nelson ◽  
Christopher D. Muir ◽  
Angela M. Stathos ◽  
Daniel D. Vanderpool ◽  
Kayli Anderson ◽  
...  
Keyword(s):  
Quantitative Trait Locus ◽  
Life History ◽  
Functional Traits ◽  
Quantitative Trait ◽  
Genetic Basis ◽  
Physiological Traits ◽  
Floral Traits ◽  
Leaf Functional Traits ◽  
Environmental Selection ◽  
Trait Locus

ABSTRACTPREMISEAcross taxa, vegetative and floral traits that vary along a fast-slow life-history axis are often correlated with leaf functional traits arrayed along the leaf economics spectrum, suggesting a constrained set of adaptive trait combinations. Such broad-scale convergence may arise from genetic constraints imposed by pleiotropy (or tight linkage) within species, or from natural selection alone. Understanding the genetic basis of trait syndromes and their components is key to distinguishing these alternatives and predicting evolution in novel environments.METHODSWe used a line-cross approach and quantitative trait locus (QTL) mapping to characterize the genetic basis of twenty leaf functional/physiological, life history, and floral traits in hybrids between annualized and perennial populations of scarlet monkeyflower (Mimulus cardinalis).RESULTSWe mapped both single and multi-trait QTLs for life history, leaf function and reproductive traits, but found no evidence of genetic co-ordination across categories. A major QTL for three leaf functional traits (thickness, photosynthetic rate, and stomatal resistance) suggests that a simple shift in leaf anatomy may be key to adaptation to seasonally dry habitats.CONCLUSIONSOur results suggest that the co-ordination of resource-acquisitive leaf physiological traits with a fast life history and more selfing mating system results from environmental selection rather than functional or genetic constraint. Independent assortment of distinct trait modules, as well as a simple genetic basis to leaf physiological traits associated with drought escape, may facilitate adaptation to changing climates.

scholarly journals Genetic Dissection of Growth and Eco-Physiological Traits Associated with Altitudinal Adaptation in Sakhalin Fir (Abies sachalinensis) Based on QTL Mapping

Genes ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1110
Author(s):  
Susumu Goto ◽  
Hideki Mori ◽  
Kentaro Uchiyama ◽  
Wataru Ishizuka ◽  
Haruhiko Taneda ◽  
...  
Keyword(s):  
Local Adaptation ◽  
Dna Sequences ◽  
Genetic Basis ◽  
Growth Traits ◽  
Response Regulator ◽  
Shoot Elongation ◽  
Physiological Traits ◽  
Abies Sachalinensis ◽  
Nucleotide Polymorphisms ◽  
Needle Morphology

(1) Background: The genetic basis of local adaptation in conifers remains poorly understood because of limited research evidence and the lack of suitable genetic materials. Sakhalin fir (Abies sachalinensis) is an ideal organism for elucidating the genetic basis of local adaptation because its altitudinal adaptation has been demonstrated, and suitable materials for its linkage mapping are available. (2) Method: We constructed P336 and P236 linkage maps based on 486 and 516 single nucleotide polymorphisms, respectively, that were derived from double digest restriction site-associated DNA sequences. We measured the growth and eco-physiological traits associated with morphology, phenology, and photosynthesis, which are considered important drivers of altitudinal adaptation. (3) Results: The quantitative trait loci (QTLs) for growth traits, phenology, needle morphology, and photosynthetic traits were subsequently detected. Similar to previous studies on conifers, most traits were controlled by multiple QTLs with small or moderate effects. Notably, we detected that one QTL for the crown area might be a type-A response regulator, a nuclear protein responsible for the cytokinin-induced shoot elongation. (4) Conclusion: The QTLs detected in this study include potentially important genomic regions linked to altitudinal adaptation in Sakhalin fir.

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