scholarly journals Natural allelic variation at seed size loci in relation to other life history traits of Arabidopsis thaliana

1999 ◽  
Vol 96 (8) ◽  
pp. 4710-4717 ◽  
Author(s):  
C. Alonso-Blanco ◽  
H. Blankestijn-de Vries ◽  
C. J. Hanhart ◽  
M. Koornneef
Keyword(s):  
Arabidopsis Thaliana ◽  
Life History ◽  
Seed Size ◽  
Life History Traits ◽  
Allelic Variation

scholarly journals The genetic control of leaf and petal allometric variations in Arabidopsis thaliana

2020 ◽  
Author(s):  
Xin Li ◽  
Yaohua Zhang ◽  
Suxin Yang ◽  
Chunxia Wu ◽  
Qun Shao ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Arabidopsis Thaliana ◽  
Life History ◽  
Life History Traits ◽  
Genetic Basis ◽  
Principal Component ◽  
Confidence Regions ◽  
Stem Length ◽  
Organ Shape ◽  
Shape And Size

Abstract Background Correlated variation in shape and size (allometry) is a major component of natural diversity. Although ample research has been conducted on organ shape and size, little of it has considered the correlated variation of these two traits and quantitatively measured the variation in a common framework. The genetic basis of allometry variation in a single organ or among different organs is also relatively unknown. Results We examined the genetic basis for leaf and petal allometry within multiparent advanced generation intercross (MAGIC) populations of Arabidopsis thaliana. A principal component analysis of organ landmarks and outlines was conducted and used to quantitatively capture shape and size variation in leaves and petals. The genetic basis of leaf and petal allometry and the allometric covariation between leaves and petals was analyzed via QTL mapping. Five QTLs for the fourth leaf, 11 QTLs for the seventh leaf, and 12 QTLs for the petal size and shape were identified. Besides that, 12 QTLs were identified in association with the fourth leaf and petal allometry covariation, and eight QTLs were identified to associate with the seventh leaf and petal allometry covariation. In these confidence regions, many important candidate genes associated with cell proliferation, expansion, and differentiation contained alleles with maximum effects. Life-history traits, such as days to bolt, stem length, and rosette leaf number, were also measured and used to perform the QTL analysis within the MAGIC lines. The phenotype correlation and QTL overlap between leaf and petal allometry with life-history traits hinted at the genetic integration of organ allometry with the life-history traits and of the interaction of organ allometry with local adaptation. Conclusions Allometry describes the correlated variation in shape and size in one organ or related organs. Several QTLs were identified by using the MAGIC lines and the genes associated with cell proliferation and expansion may responsible for the leaf and petal allometry. Summarily, we explored the genetic basis of allometry variation of leaf and petal by using the MAGIC lines, and may provide important information for investigating the organ shape and size evolution in Arabidopsis.

scholarly journals Host Responses in Life-History Traits and Tolerance to Virus Infection in Arabidopsis thaliana

2008 ◽  
Vol 4 (8) ◽  
pp. e1000124 ◽  
Author(s):  
Israel Pagán ◽  
Carlos Alonso-Blanco ◽  
Fernando García-Arenal
Keyword(s):  
Arabidopsis Thaliana ◽  
Life History ◽  
Virus Infection ◽  
Life History Traits ◽  
Host Responses

Prey tell: what quillback rockfish early life history traits reveal about their survival in encounters with juvenile coho salmon

2020 ◽  
Vol 650 ◽  
pp. 7-18 ◽  
Author(s):  
HW Fennie ◽  
S Sponaugle ◽  
EA Daly ◽  
RD Brodeur
Keyword(s):  
Life History ◽  
Early Life ◽  
Life History Traits ◽  
Direct Evidence ◽  
Coho Salmon ◽  
Larval Fish ◽  
Early Life History ◽  
In The Wild ◽  
Otolith Microstructure Analysis ◽  
Pelagic Juvenile

Predation is a major source of mortality in the early life stages of fishes and a driving force in shaping fish populations. Theoretical, modeling, and laboratory studies have generated hypotheses that larval fish size, age, growth rate, and development rate affect their susceptibility to predation. Empirical data on predator selection in the wild are challenging to obtain, and most selective mortality studies must repeatedly sample populations of survivors to indirectly examine survivorship. While valuable on a population scale, these approaches can obscure selection by particular predators. In May 2018, along the coast of Washington, USA, we simultaneously collected juvenile quillback rockfish Sebastes maliger from both the environment and the stomachs of juvenile coho salmon Oncorhynchus kisutch. We used otolith microstructure analysis to examine whether juvenile coho salmon were age-, size-, and/or growth-selective predators of juvenile quillback rockfish. Our results indicate that juvenile rockfish consumed by salmon were significantly smaller, slower growing at capture, and younger than surviving (unconsumed) juvenile rockfish, providing direct evidence that juvenile coho salmon are selective predators on juvenile quillback rockfish. These differences in early life history traits between consumed and surviving rockfish are related to timing of parturition and the environmental conditions larval rockfish experienced, suggesting that maternal effects may substantially influence survival at this stage. Our results demonstrate that variability in timing of parturition and sea surface temperature leads to tradeoffs in early life history traits between growth in the larval stage and survival when encountering predators in the pelagic juvenile stage.

Life History Traits in a Population of Pelobates syriacus (Boettger, 1889) from Turkey

2020 ◽  
Vol 27 (4) ◽  
pp. 195-200
Author(s):  
Ufuk Bülbül ◽  
Halime Koç ◽  
Yasemin Odabaş ◽  
Ali İhsan Eroğlu ◽  
Muammer Kurnaz ◽  
...  
Keyword(s):  
Life History ◽  
Age Structure ◽  
Life History Traits ◽  
Spadefoot Toad ◽  
Males And Females

Age structure of the eastern spadefoot toad, Pelobates syriacus from the Kızılırmak Delta (Turkey) were assessed using phalangeal skeletochronology. Snout-vent length (SVL) ranged from 42.05 to 86.63 mm in males and 34.03 to 53.27 mm in females. Age of adults ranged from 2 to 8 years in males and 3 to 5 years in females. For both sexes, SVL was significantly correlated with age. Males and females of the toads reached maturity at 2 years of age.

Sign in / Sign up

Export Citation Format

Share Document