Distribution and characterization of Aegilops cylindrica species from Iran

AbstractJointed goatgrass (Aegilops cylindrica Host; 2n = 4x = 28, CcCcDcDc) is a tetraploid remote relative of bread wheat (Triticum aestivum L; 2n=6x=42, AABBDD) with 2 genomes and 28 chromosomes. The diversity center of this species is in the Fertile Crescent and in central Asia and could also be found in many places in Iran. In this experiment, 359 accessions provided by National Plant Gene Bank of Iran (NPGBI) were used. Based on the geographical distribution, the highest distribution of Ae. cylindrica are from North, West and North West regions of Iran. The distribution data of Ae. cylindrica showed that the distribution centers in Iran are more than those reported in previous studies in Iran. Chromosome counting showed that all Ae. cylindrica accessions are tetraploid (2n=4x=28). Results of factor analysis for 9 morphological chromosome traits showed that karyotypic variation within accessions are related to the length of chromosomes and there is difference between accessions for their total chromosome length, but the karyotype of different accessions were almost the same for the symmetry. Low coefficient of variation in morphological traits as well as symmetric karyotypes of Ae. cylindrica species observed in this study could lead us to more confidently say that Ae. cylindrica could be a recently evolved species among remote relatives of bread wheat.

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Distribution and characterization of Aegilops cylindrica host from Iran

Bangladesh Journal of Plant Taxonomy ◽

10.3329/bjpt.v26i2.44579 ◽

2019 ◽

Vol 26 (2) ◽

pp. 183-195

Author(s):

Behnam Bakhshi ◽

Mohammad Jaffar Aghaei ◽

Eissa Zarifi ◽

Mohammad Reza Bihamta ◽

Ehsan Mohseni Fard ◽

...

Keyword(s):

Bread Wheat ◽

Triticum Aestivum L ◽

Chromosome Length ◽

Distribution Centers ◽

Aegilops Cylindrica ◽

North West ◽

Jointed Goatgrass ◽

Fertile Crescent ◽

Karyotypic Variation

Jointed goatgrass (Aegilops cylindrica Host; 2n = 4x = 28, CcCcDcDc) is a tetraploid remote relative of bread wheat (Triticum aestivum L; 2n=6x=42, AABBDD) with two genomes and 28 chromosomes. The diversity center of this species is in the Fertile Crescent and in central Asia and could also be found in many places in Iran. In this experiment, 359 accessions provided by National Plant Gene Bank of Iran (NPGBI) were used. Based on the geographical distribution, the highest distribution of A. cylindrica is found in North, West and North-West regions of Iran. The data on the distribution of A. cylindrica showed that its distribution centers in Iran are more than those reported in the previous studies. Chromosome counting showed that all A. cylindrica accessions are tetraploid (2n=4x=28). Results of factor analysis for nine morphological chromosome traits showed that karyotypic variation within accessions are related to the length of chromosomes and there is difference between the accessions for their total chromosome length, but the karyotype of different accessions are almost the same for the symmetry. Low coefficient of variation in morphological traits as well as symmetric karyotypes of A. cylindrica species observed in this study could lead us to predict that A. cylindrica could be a recently evolved species among the remote relatives of bread wheat.

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Complete characterization of wheat–alien metaphase I pairing in interspecific hybrids between durum wheat (Triticum turgidum L.) and jointed goatgrass (Aegilops cylindrica Host)

Theoretical and Applied Genetics ◽

10.1007/s00122-009-1009-2 ◽

2009 ◽

Vol 118 (8) ◽

pp. 1609-1616 ◽

Cited By ~ 7

Author(s):

Marta Cifuentes ◽

Elena Benavente

Keyword(s):

Durum Wheat ◽

Interspecific Hybrids ◽

Triticum Turgidum ◽

Complete Characterization ◽

Aegilops Cylindrica ◽

Jointed Goatgrass ◽

Metaphase I

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Molecular Characterization of Heat Tolerance in Bread Wheat (Triticum aestivumL.) Using Differences in Thousand-Grain Weights (dTGW) as a Potential Indirect Selection Criterion

Cereal Research Communications ◽

10.1556/crc.2013.0041 ◽

2014 ◽

Vol 42 (1) ◽

pp. 38-46 ◽

Cited By ~ 4

Author(s):

G.C. Pandey ◽

S. Sareen ◽

P. Siwach ◽

R. Tiwari

Keyword(s):

Molecular Characterization ◽

Bread Wheat ◽

Heat Tolerance ◽

Selection Criterion ◽

Indirect Selection

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SPRING BREAD WHEAT: CHARACTERIZATION OF EARLY AND ULTRA-EARLY ACCESSIONS ACCORDING TO THEIR PRODUCTIVITY AND PHOTOPERIOD SENSITIVITY

10.30901/978-5-905954-65-8 ◽

2018 ◽

Cited By ~ 1

Author(s):

B.V. Rigin ◽

◽

E.V. Zuev ◽

V.A. Koshkin ◽

Z.S. Pyzhenkova ◽

...

Keyword(s):

Bread Wheat ◽

Photoperiod Sensitivity ◽

Spring Bread Wheat

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Development and Characterization of Wheat-Agropyron cristatum Introgression Lines Induced by Gametocidal Genes and Wheat ph1b Mutant

Agronomy ◽

10.3390/agronomy11020277 ◽

2021 ◽

Vol 11 (2) ◽

pp. 277

Author(s):

Alejandro Copete-Parada ◽

Carmen Palomino ◽

Adoración Cabrera

Keyword(s):

Genetic Resources ◽

Agropyron Cristatum ◽

Homologous Gene ◽

Aegilops Cylindrica ◽

Induction Frequency ◽

Structural Aberrations ◽

Translocation Lines ◽

New Germplasm

The P genome of Agropyron cristatum Gaertn. contains many desirable genes that can be utilized as genetic resources to improve wheat. In this research, we used both the gametocidal chromosome 2Cc and the pairing homologous gene (Ph1b) mutant to induce structural aberrations and translocations between wheat and the 4P, 5P, and 6P genome chromosomes. By using the two approaches, a total of 19 wheat-A. cristatum translocations have been identified, in which 13 were induced by the Triticum aestivum cv. Chinese Spring (CS) ph1b mutant (CS ph1b) and six were induced by gametocidal chromosome 2Cc from Aegilops cylindrica Host. The wheat-4P, -5P and -6P A. cristatum translocations were characterized by in situ hybridization and by a set of conserved orthologous set (COS) molecular markers. The aberrations included centromeric translocations, terminal translocations, dicentric translocations, and deletions. The average induction frequency of chromosome structural aberrations was 10.9% using gametocidal 2Cc chromosome and 8.8% using ph1b mutant. The highest frequency obtained was for chromosome 4P using both approaches. All the wheat-A. cristatum translocation lines obtained were valuable for identifying A. cristatum chromosome 4P, 5P, and 6P related genes. In addition, these lines provided genetic resources and new germplasm accessions for the genetic improvement of wheat.

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A characterization of heam uptake and intracellular distribution by isolated hepatocytes

Bioscience Reports ◽

10.1007/bf01117074 ◽

1985 ◽

Vol 5 (7) ◽

pp. 609-614 ◽

Cited By ~ 2

Author(s):

A. Lodola

Keyword(s):

Endoplasmic Reticulum ◽

Specific Binding ◽

Isolated Hepatocytes ◽

Intracellular Distribution ◽

Distribution Data ◽

Temperature Dependent ◽

Rat Hepatocyte ◽

Isolated Rat ◽

Endoplasmic Reticulum Fraction

The uptake and intracellular distribution of haem by isolated rat hepatocyte suspensions was studied. An increase in cell haem content occurred after a challenge with 5, 10 or 20 μM haem, supplied as methaemalbumin. The rate of haem uptake was temperature dependent; no non-specific binding occurred. Intracellular haem distribution data are consistent with a rapid association of haem with the endoplasmic reticulum fraction prior to its accumulation in the cytosol and at the mitochondrion.

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Development and characterization of the 4th CSISA-spot blotch nursery of bread wheat

European Journal of Plant Pathology ◽

10.1007/s10658-015-0712-x ◽

2015 ◽

Vol 143 (3) ◽

pp. 595-605 ◽

Cited By ~ 15

Author(s):

Pawan K. Singh ◽

Yong Zhang ◽

Xinyao He ◽

Ravi P. Singh ◽

Ramesh Chand ◽

...

Keyword(s):

Bread Wheat ◽

Spot Blotch

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Distribution patterns and conservation status of Crocus species in Iran, one of the diversity centers of Crocus in the Middle East

Folia Oecologica ◽

10.2478/foecol-2021-0016 ◽

2021 ◽

Vol 48 (2) ◽

pp. 156-168

Author(s):

Melika Tabasi ◽

Ahmadreza Mehrabian ◽

Sadaf Sayadi

Keyword(s):

Middle East ◽

Conservation Status ◽

Distribution Patterns ◽

Field Studies ◽

Distribution Data ◽

Herbarium Specimens ◽

Distribution Centers ◽

Boundary Area ◽

Universal Transverse Mercator ◽

Western Asia

Abstract Assessing distribution patterns of valuable taxa plays an important role in the biodiversity conservation of these taxa. The genus Crocus L. (Iridaceae) comprises about 100 species that are distributed mainly in the Mediterranean region and western Asia. The present study purposed to assess the distribution patterns of Iranian Crocus species (including C. sativus L. and 8 wild species) and their conservation status in Iran as one of diversity centers of Crocus in the Middle East. A set of geographic distribution data was compiled through field studies, and reviews of herbarium specimens, iNaturalist, and various Flora. Localities were marked on geo-referenced maps (1/106) of Iran using ArcView version 3.2 (Esri, 2000). The distribution patterns of the taxa were mapped per 0.25° × 0.25° universal transverse Mercator grid cells (25 km2 with the exception of boundary area). Based on the species distribution (SDI) (33%) and species specialization (SSI) (44%) indices, those Iranian Crocus species that are threatened are mainly distributed in Irano-Turanian region. The mountainous ecosystems of Almeh and Western Alborz are important distribution centers of these taxa. Iranian Crocus species with SSI < 0.5 (C. almehensis, C. gilanicus, C. michelsonii, and C. caspius) have the highest conservation value.

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