The inheritance of an inter-simple-sequence-repeat (ISSR) polymorphism was studied in a cross of cultivated chickpea (Cicer arietinum L.) and a closely related wild species (C. reticulatum Lad.) using primers that anneal to a simple repeat of various lengths, sequences and non-repetitive motifs. Dinucleotides were the majority of those tested, and provided all of the useful banding patterns. The ISSR loci showed virtually complete agreement with expected Mendelian ratios. Twenty two primers were used for analysis and yielded a total of 31 segregating loci. Primers based on (GA)n repeats were the most abundant while primers with a (TG)n repeat gave the largest number of polymorphic loci. Nucleotides at the 5' and 3' end of the primers played an important role in detecting polymorphism. All the markers showed dominance. We found an ISSR marker linked to the gene for resistance to fusarium wilt race 4. The marker concerned, UBC-855500, was found to be linked in repulsion with the fusarium wilt resistance gene at a distance of 5.2 cM. It co-segregated with CS-27700, a RAPD marker previously shown to be linked to the gene for resistance to fusarium wilt race 1, and was mapped to linkage group 6 of the Cicer genome. This indicated that genes for resistance to fusarium wilt races 1 and 4 are closely linked. The marker UBC-855500 is located 0.6 cM from CS-27700 and is present on the same side of the wilt resistance gene. To our knowledge this is the first report of the utility of an ISSR marker in gene tagging. These markers may provide valuable information for the development of sequence-tagged microsatellite sites (STMS) at a desired locus.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s001220050747 | DOI Listing |
Int J Mol Sci
January 2025
College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin 150030, China.
Biocontrol microbes are environment friendly and safe for humans and animals. To seek biocontrol microbes effective in suppressing is important for tomato production. is a soil-borne pathogen capable of causing wilt in numerous plant species.
View Article and Find Full Text PDFMicroorganisms
January 2025
Institute of Vegetable, Henan Academy of Agricultural Sciences, Graduate T&R Base of Zhengzhou University, Zhengzhou 450002, China.
strain PJH16, isolated and tested by our team, suppresses cucumber wilt as an efficient biocontrol agent. For further investigation, the strain has been combined with two other ( VJH504 and JNF2) to enhance biocontrol ability, which formed high-efficiency microbial agents in the current study. The methodological target taken is based on achieving the optimal growth conditions of the combined microbial agents; hence, the medium composition and culture conditions were optimized through a single-factor test, orthogonal test and response surface methodology.
View Article and Find Full Text PDFFront Plant Sci
January 2025
Fruit Tree Center, Tropical Crops Genetic Resources Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
With the aim of enhancing plants' ability to respond to pathogenic fungi, this study focuses on disease resistance genes. We commenced a series of investigations by capitalizing on the pronounced differences in resistance to Fusarium wilt between resistant and susceptible varieties. Through an in-depth exploration of the metabolic pathways that bolster this defense, we identified genes associated with resistance to f.
View Article and Find Full Text PDFTheor Appl Genet
January 2025
USDA, ARS, U.S. Vegetable Laboratory, 2700 Savannah Highway, Charleston, SC, 29414, USA.
Complex traits influenced by multiple genes pose challenges for marker-assisted selection (MAS) in breeding. Genomic selection (GS) is a promising strategy for achieving higher genetic gains in quantitative traits by stacking favorable alleles into elite cultivars. Resistance to Fusarium oxysporum f.
View Article and Find Full Text PDFBMC Plant Biol
January 2025
College of Life Science, Jilin Agricultural University, Changchun, 13000, China.
Background: Thaumatin-like proteins (TLPs) are crucial pathogenesis-related proteins that significantly contribute to plant defense rection. Fusarium oxysporum f. sp.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!