CINECA IRIS Institutional Research Information System
IRIS is the IT solution to facilitate the collection and management of data and activities related to research product.
EnglishDisease resistance (R) genes from different Rosaceae species have been identified by map-based cloning for resistance breeding, and most disease resistance genes encode NBS-LRR protein. However, reports describing evolutionary pattern of R-genes in Rosacese species are rare because several Rosaceae genome sequences have only become available in last several years. We performed a systematic genome-wide survey of NBS-LRR genes among five Rosaceae plants, including Fragaria vesca (woodland strawberry), Malus × domestica (apple), Pyrus bretschneideri (Asian pear), Prunus persica (peach) and Prunus mume (mei, or Japanese apricot) with 144, 748, 469, 354 and 352 NBS-LRR genes. The high proportions of multi-genes and similar Ks peaks (Ks = 0.1- 0.2) of gene families in the four woody genomes indicate that recent duplications played an important role in the four woody perennial Rosaceae species. Subsequently, 385 species-specific duplicate clades were dominant in the phylogenetic tree constructed by all 2067 NBS-LRR genes. High percentages of NBS-LRR genes involved in species-specific duplication were found among the five genomes (54.86% in woodland strawberry, 68.05% in apple, 57.56% in pear, 44.07% in peach and 45.74% in mei). It might be inferred that species-specific duplication mainly contributes to the expansion of NBS-LRR genes in the five Rosacese species. In addition, the Ks and Ka/Ks values of TIR-NBS-LRR (TNL) were significantly greater than those of non-TIR-NBS-LRR (non-TNL), suggesting that rapidly evolved TNLs have different evolutionary patterns to adapt to different pathogens compared with non-TNL genes. In addition, some of the RPW8 domain-containing NBS-LRRs had Ka/Ks ratios less than 1, suggesting that they were driven by positive selection
Zhong, Y.; Yin, H.; Sargent, D.J.; Malnoy, M.A.; Cheng, Z.M. (2014). Unique evolutionary pattern of NBS-LRR genes among five Rosaceae species. In: RGC7: 7th International Rosaceae Genomics Conference, June 24-26, 2014, Seattle, Washington, USA: 76. url: http://www.rosaceae.org/sites/default/files/files/AbstractBook_text-June2014-Final.pdf handle: http://hdl.handle.net/10449/23815
| Citation: | Zhong, Y.; Yin, H.; Sargent, D.J.; Malnoy, M.A.; Cheng, Z.M. (2014). Unique evolutionary pattern of NBS-LRR genes among five Rosaceae species. In: RGC7: 7th International Rosaceae Genomics Conference, June 24-26, 2014, Seattle, Washington, USA: 76. url: http://www.rosaceae.org/sites/default/files/files/AbstractBook_text-June2014-Final.pdf handle: http://hdl.handle.net/10449/23815 | |
| Internal authors: | ||
| Organization unit: | CRI [2011-01 - today]: DEPARTMENT OF GENOMICS AND BIOLOGY OF FRUIT CROPS | |
| Authors: | Zhong, Y.; Yin, H.; Sargent, D.J.; Malnoy, M.A.; Cheng, Z.M. | |
| Title: | Unique evolutionary pattern of NBS-LRR genes among five Rosaceae species | |
| Issue Date: | 2014 | |
| Scientific Disciplinary Area: | Settore AGR/07 - GENETICA AGRARIA | |
| Keywords ENG: | NBS-LRR genes Rosaceae species Disease resistance genes Species-specific duplication | |
| Language: | English | |
| Nature of content: | Abstract in Atti di convegno/Conference abstract | |
| URL: | http://www.rosaceae.org/sites/default/files/files/AbstractBook_text-June2014-Final.pdf | |
| Appears in Collections: | 03 - Conference object |
Files in This Item:
| File | Description | Type | License | |
|---|---|---|---|---|
| 2014 RGC7 76.pdf | N/A | Tutti i diritti riservati (All rights reserved) | Open AccessView/Open |
Copyright © 2021