Genome-wide Identification and Evolutionary Analysis of NBS-LRR Genes From Secale cereale
13
Citation
41
Reference
10
Related Paper
Citation Trend
Abstract:
Secale cereale is an important crop in the Triticeae tribe of the Poaceae family, and it has unique agronomic characteristics and genome properties. It possesses resistance to many diseases and serves as an important resource for the breeding of other Triticeae crops. We performed a genome-wide study on S. cereale to identify the largest group of plant disease resistance genes (R genes), the nucleotide-binding site-leucine-rich repeat receptor (NBS-LRR) genes. In its genome, 582 NBS-LRR genes were identified, including one from the RNL subclass and 581 from the CNL subclass. The NBS-LRR gene number in the S. cereale genome is greater than that in barley and the diploid wheat genomes. S. cereale chromosome 4 contains the largest number of NBS-LRR genes among the seven chromosomes, which is different from the pattern in barley and the genomes B and D of wheat but similar to that in the genome A of wheat. Further synteny analysis suggests that more NBS-LRR genes on chromosome 4 have been inherited from a common ancestor by S. cereale and the wheat genome A than the wheat genomes B and D. Phylogenetic analysis revealed that at least 740 NBS-LRR lineages are present in the common ancestor of S. cereale, Hordeum vulgare and Triticum urartu. However, most of them have only been inherited by one or two species, with only 65 of them preserved in all three species. The S. cereale genome inherited 382 of these ancestral NBS-LRR lineages, but 120 of them have been lost in both H. vulgare and T. urartu. This study provides the full NBS-LRR profile of the S. cereale genome, which is a resource for S. cereale breeding and indicates that S. cereale can be an important material for the molecular breeding of other Triticeae crops.Keywords:
Triticeae
Secale
Synteny
Common wheat
Agropyron
Summary Six wheat/ Agropyron intermedium addition lines are described on the basis of their phenotype and biochemical markers. An assessment of homoeology of each addition chromosome is made. Chromosome morphology, plant phenotype, isozyme and protein studies are compared with similar data for other wheat/alien addition lines and other members of the Triticeae . These comparisons give consistent results and it is concluded that addition lines L1, L2, L3, L4, L5 and L7 carry Agropyron chromosomes of homoeologous groups 7, 3, 1, 4, 5 and 6 respectively. This agrees with previously published work with one exception: the L5 chromosome belongs to homoeologous group 5 and not group 2 as proposed by Figueiras et al. (1986).
Agropyron
Triticeae
Common wheat
Cite
Citations (45)
Plants have evolved sophisticated systems to cope with the environmental stresses, with the heat shock factor (HSF) family proteins composing an integral part of the transcriptional regulation system. Understanding the evolutionary history and functional diversity of HSFs will facilitate improving tolerance of crops to adverse environmental conditions. In this study, genome-wide analysis of Secale cereale identified 31 HSF genes. The total number of HSF genes in S. cereale is larger than that in barley and the three subgenomes of wheat, suggesting it is a valuable resource for mining functional HSFs. Chromosome analysis revealed an uneven distribution of HSF genes among the 7 S. cereale chromosomes, with no HSF gene was detected on chromosome 4. Further interspecies synteny analysis revealed that chromosome reorganization during species-speciation may lead to the escape of HSF genes from the S. cereale chromosome 4. Phylogenetic analysis revealed that S. cereale experienced more HSF gene duplications than barley and the three wheat subgenomes. Expression analysis demonstrated that S. cereale HSF genes showed diverse expression patterns across plant developmental stages and upon drought and freezing treatment, suggesting functional diversity of the gene family. Notably, we detected distinct expression patterns for a recently duplicated HSF gene pair, indicating functional divergence may have occurred between the two genes. The study presents the genome organization, evolutionary features and expression patterns of the S. cereale HSF genes. These results provide new insights into the evolution of HSF genes in Triticeae and may serve as a resource for Triticeae molecular breeding.
Secale
Triticeae
Cite
Citations (10)
موقعیت تاکسونومیک جنس Secale L. در ایران مورد بازنگری قرار گرفت. موارد ریخت‌شناختی و تاکسونومیک تاکسون‌های متعلق به جنس مزبور بر پایه مجموعا تعداد 50 نمونه جمعیتی و 104 نمونه هرباریومی از دامنه گسترش وسیعی از این جنس در ایران مطالعه شد. مشاهدات حاصل از این مطالعه نشان داد که جنس Secale در ایران با دو گونه: 1- Secale cereale L. subsp. ancestrale Zhuk., & subsp. cereale. 2- Secale strictum. (C. Presl) C. Presl subsp. strictum var. strictum and var. ciliatiglume (Boiss.) Fred. & G. Petersen.حضور دارد.
Secale
Triticeae
Cite
Citations (0)
Low temperature (LT) adaptability has been studied intensely in the Triticeae, which includes economically important cereals such as wheat (Triticum aestivum L.), barley (Hordeum vulgare L.), and rye (Secale cereale L.). Phenotypic studies have shown that the cold induced protective mechanisms in cereals are developmentally regulated and involve acclimation processes that can be stopped, reversed, and restarted (Fowler et al. 1999).
Secale
Triticeae
Adaptability
Hordeum
Cite
Citations (0)
As part of a revision of the genus, Agropyron deweyi Á. Löve (Poaceae, Triticeae) is neotypified, because its holotype grown from seed material from Turkey was lost. The neotype is selected from one of two specimens bearing the same wild-origin seed details as the original type, which differ in the date of their collection.
Triticeae
Agropyron
Elymus
Leymus
Cite
Citations (2)
Secale
Elymus
Triticeae
Polyploid
Cite
Citations (12)
Secale cereal L belongs to the Triticeae of Gramineae.It is always diploid species with chromosome number of 2n=2x=14 and has R gemome.This article describes its shape,distribution and characteristics,and focuses on the use of genetic experiments and teaching in cell mitosis and meiosis,and induction and identification of polyploidy,and chromosome banding analysis,also discusses its application and prospect in wheat genetics and breeding research.
Secale
Triticeae
Cite
Citations (0)
Triticeae
Secale
Triticale
Hordeum
Elymus
Cite
Citations (16)
Secale
Agropyron
Triticeae
Cite
Citations (0)
Secale
Agropyron
Erysiphe graminis
Elymus
Repens
Cite
Citations (9)