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Title 

A genome-wide comparison of NB-LRR type of resistance gene analogs (RGA) in the plant kingdom

Authors 

Jung Eun KimChan Ju LimB W LeeJae Pil ChoiS K OhR AhmadSuk Yoon KwonJi Sook AhnCheol-Goo Hur

Publisher 

Springer Verlag (Germany)

Issue Date 

2012

Citation 

Molecules and Cells, vol. 33, no. 4, pp. 385-392

Keywords 

NB-LRRNB-LRR clusterplant genomeRGARGA map

Abstract 

Plants express resistance (R) genes to recognize invaders and prevent the spread of pathogens. To analyze nucleotide binding site, leucine-rich repeat (NB-LRR) genes, we constructed a fast pipeline to predict and classify the R gene analogs (RGAs) by applying in-house matrices. With predicted ∼37,000 RGAs, we can directly compare RGA contents across entire plant lineages, from green algae to flowering plants. We focused on the highly divergent NBLRRs in land plants following the emergence of mosses. We identified entire loss of Toll/Interleukin-1 receptor, NBLRR (TNL) in Poaceae family of monocots and interestingly from Mimulus guttatus (a dicot), which leads to the possibility of species-specific TNL loss in other sequenced flowering plants. Using RGA maps, we have elucidated a positive correlation between the cluster sizes of NB-LRRs and their numbers. The cluster members were observed to consist of the same class of NB-LRRs or their variants, which were probably generated from a single locus for an R gene. Our website (http://sol.kribb.re.kr/PRGA/), called plant resistance gene analog (PRGA), provides useful information, such as RGA annotations, tools for predicting RGAs, and analyzing domain profiles. Therefore, PRGA provides new insights into R-gene evolution and is useful in applying RGA as markers in breeding and or systematic studies.

ISSN 

1016-8478

Link 

http://dx.doi.org/10.1007/s10059-012-0003-8

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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