scholarly journals Natural selection causes microscale allozyme diversity in wild barley and a lichen at ‘Evolution Canyon’, Mt. Carmel, Israel

Heredity ◽  
1997 ◽  
Vol 78 (4) ◽  
pp. 373-382 ◽  
Author(s):  
Eviatar Nevo ◽  
Iris Apelbaum-Elkaher ◽  
Jacob Garty ◽  
Avigdor Beiles
Keyword(s):  
Natural Selection ◽  
Wild Barley ◽  
Allozyme Diversity ◽  
Evolution Canyon

Adaptive microclimatic evolution of the dehydrin 6 gene in wild barley at “Evolution Canyon”, Israel

Genetica ◽  
2011 ◽  
Vol 139 (11-12) ◽  
pp. 1429-1438 ◽  
Author(s):  
Zujun Yang ◽  
Tao Zhang ◽  
Guangrong Li ◽  
Eviatar Nevo
Keyword(s):  
Wild Barley ◽  
Evolution Canyon

Mosaic microecological differential stress causes adaptive microsatellite divergence in wild barley, Hordeum spontaneum, at Neve Yaar, Israel

Genome ◽  
2002 ◽  
Vol 45 (6) ◽  
pp. 1216-1229 ◽  
Author(s):  
Qingyang Huang ◽  
Alex Beharav ◽  
Youchun Li ◽  
Valery Kirzhner ◽  
Eviatar Nevo
Keyword(s):  
Genetic Diversity ◽  
Natural Selection ◽  
Wild Barley ◽  
Permutation Test ◽  
Balancing Selection ◽  
Real Data ◽  
Hordeum Spontaneum ◽  
Data Sets ◽  
Total Genetic Diversity ◽  
Ssr Loci

Genetic diversity at 38 microsatellite (short sequence repeats (SSRs)) loci was studied in a sample of 54 plants representing a natural population of wild barley, Hordeum spontaneum, at the Neve Yaar microsite in Israel. Wild barley at the microsite was organized in a mosaic pattern over an area of 3180 m2 in the open Tabor oak forest, which was subdivided into four microniches: (i) sun–rock (11 genotypes), (ii) sun–soil (18 genotypes), (iii) shade–soil (11 genotypes), and (iv) shade–rock (14 genotypes). Fifty-four genotypes were tested for ecological–genetic microniche correlates. Analysis of 36 loci showed that allele distributions at SSR loci were nonrandom but structured by ecological stresses (climatic and edaphic). Sixteen (45.7%) of 35 polymorphic loci varied significantly (p < 0.05) in allele frequencies among the microniches. Significant genetic divergence and diversity were found among the four subpopulations. The soil and shade subpopulations showed higher genetic diversities at SSR loci than the rock and sun subpopulations, and the lowest genetic diversity was observed in the sun–rock subpopulation, in contrast with the previous allozyme and RAPD studies. On average, of 36 loci, 88.75% of the total genetic diversity exists within the four microniches, while 11.25% exists between the microniches. In a permutation test, GST was lower for 4999 out of 5000 randomized data sets (p < 0.001) when compared with real data (0.1125). The highest genetic distance was between shade-soil and sun–rock (D = 0.222). Our results suggest that diversifying natural selection may act upon some regulatory regions, resulting in adaptive SSR divergence. Fixation of some loci (GMS61, GMS1, and EBMAC824) at a specific microniche seems to suggest directional selection. The pattern of other SSR loci suggests the operation of balancing selection. SSRs may be either direct targets of selection or markers of selected haplotypes (selective sweep).Key words: natural selection, genetic diversity, microsatellites, adaptation, Hordeum spontaneum, wild barley, microsite divergence.

BIODIVERSITY AND INTERSLOPE DIVERGENCE OF VASCULAR PLANTS CAUSED BY MICROCLIMATIC DIFFERENCES AT “EVOLUTION CANYON”, LOWER NAHAL OREN, MOUNT CARMEL, ISRAEL

1999 ◽  
Vol 47 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Eviatar Nevo ◽  
Ori Fragman ◽  
Amots Dafni ◽  
Avigdor Beiles
Keyword(s):  
Natural Selection ◽  
Species Diversity ◽  
Vascular Plants ◽  
Vascular Plant ◽  
Plant Cover ◽  
Life Forms ◽  
Valley Bottom ◽  
Content Sharing ◽  
The North ◽  
Evolution Canyon

Species diversity of plants was recorded in 1992 and 1993 at seven stations of the “Evolution Canyon” microsite. Higher solar radiation on the South-Facing Slope (SFS) causes warm, xeric savannoid formation versus temperate, cool, mesic, dense maquis on the North-Facing Slope (NFS), and riverine, segetal plant formations on the Valley Bottom (VB). In an area of 7000 m2, we recorded 320 vascular plant species in 217 genera and 59 families. Plant cover varied from 35% (SFS) to 150% (NFS). Annuals predominated among all life forms (61.3% of all species). SFS and NFS varied in species content, sharing only 31–18% of species. Phytogeographical types varied among the two slopes and valley bottom. Inter-and intraslope species composition varied drastically due to differential microclimatic stresses, thereby demonstrating at a microscale natural selection in action.

scholarly journals Genomic microsatellite adaptive divergence of wild barley by microclimatic stress in ‘Evolution Canyon’, Israel

2005 ◽  
Vol 84 (2) ◽  
pp. 205-224 ◽  
Author(s):  
E. NEVO ◽  
A. BEHARAV ◽  
R. C. MEYER ◽  
C. A. HACKETT ◽  
B. P. FORSTER ◽  
...  
Keyword(s):  
Wild Barley ◽  
Adaptive Divergence ◽  
Evolution Canyon

Adaptive microclimatic structural and expressional dehydrin 1 evolution in wild barley,Hordeum spontaneum, at ‘Evolution Canyon’, Mount Carmel, Israel

2009 ◽  
Vol 18 (9) ◽  
pp. 2063-2075 ◽  
Author(s):  
ZUJUN YANG ◽  
TAO ZHANG ◽  
ALEXANDER BOLSHOY ◽  
ALEXANDER BEHARAV ◽  
EVIATAR NEVO
Keyword(s):  
Wild Barley ◽  
Hordeum Spontaneum ◽  
Evolution Canyon

Evolution of wild barley at “Evolution Canyon”: adaptation, speciation, pre-agricultural collection, and barley improvement

2015 ◽  
Vol 62 (1-2) ◽  
pp. 22-32 ◽  
Author(s):  
Eviatar Nevo
Keyword(s):  
Wild Barley ◽  
Gene Promoter ◽  
Ecological Speciation ◽  
Sympatric Speciation ◽  
Hordeum Spontaneum ◽  
Collection Site ◽  
Paper Briefly ◽  
Evolution Canyon ◽  
World Agriculture ◽  
Cultivated Barley

The present paper reviews the state of cultivated barley,Hordeum vulgare, in Old World agriculture and its domestication through its progenitor, wild barley,Hordeum spontaneum. It focuses on the adaptation, incipient sympatric speciation, and domestication ofH. spontaneumin the “Evolution Canyon” model. The “Evolution Canyon,” at lower Nahal Oren, Mount Carmel, Israel, revealsevolution in actionat a microsite caused by interslope microclimatic divergence across life from viruses and bacteria through fungi, plants, and animals including mammals. The interslope adaptive complexes ofH. spontaneumat “Evolution Canyon” include genetic diversity, drought resistance bydehydrin I, rhizosphere bacteria, andEibi Igene promoter.Isadefense locus and vitamin E components also diverge between the opposite tropical and temperate abutting slopes. A highly likely pre-agricultural collection site ofH. spontaneumis described on the Natufian cemetery of the Oren and Um Usba caves in “Evolution Canyon”. Finally, the paper briefly reviews the remarkable interslope incipient sympatric speciation ofH. spontaneumat “Evolution Canyon”, as is true for other organisms such as bacteria,Drosophila, and spiny mice,Acomys. Sympatric ecological speciation is still controversial and “Evolution Canyon” provides an appropriate site to explore it inH. spontaneumand other organisms across life.

Increases in Both Acute and Chronic Temperature Potentiate Tocotrienol Concentrations in Wild Barley at ‘Evolution Canyon’

2013 ◽  
Vol 10 (9) ◽  
pp. 1696-1705 ◽  
Author(s):  
Yu Shen ◽  
Ephraim Lansky ◽  
Maret Traber ◽  
Eviatar Nevo
Keyword(s):  
Wild Barley ◽  
Evolution Canyon

scholarly journals Natural Selection Causes Adaptive Genetic Resistance in Wild Emmer Wheat against Powdery Mildew at “Evolution Canyon” Microsite, Mt. Carmel, Israel

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0122344 ◽  
Author(s):  
Huayan Yin ◽  
Yuval Ben-Abu ◽  
Hongwei Wang ◽  
Anfei Li ◽  
Eviatar Nevo ◽  
...  
Keyword(s):  
Natural Selection ◽  
Powdery Mildew ◽  
Genetic Resistance ◽  
Wild Emmer Wheat ◽  
Emmer Wheat ◽  
Wild Emmer ◽  
Evolution Canyon
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