Publications by authors named "Makoto Kaji"
Fusarium wilt is a significant disease in radish, but the genetic mechanisms controlling yellows resistance (YR) are not well understood. This study aimed to identify YR-QTLs and to fine-map one of them using F populations developed from resistant and susceptible radish parents. In this study, two high-density genetic maps each containing shared co-dominant markers and either female or male dominant markers that spanned 988.
View Article and Find Full Text PDFThe genome-wide characterization of single nucleotide polymorphism (SNP) between cultivars or between inbred lines contributes to the creation of genetic markers that are important for plant breeding. Functional markers derived from polymorphisms within genes that affect phenotypic variation are especially valuable in plant breeding. Here, we report on the genome re-sequencing and analysis of the two parental inbred lines of the commercial F hybrid Chinese cabbage cultivar "W77".
View Article and Find Full Text PDFArticle Synopsis
- The study investigates how different lines of Brassica rapa respond to Fusarium oxysporum, a pathogen causing significant damage in Brassicaceae crops.
- Researchers identified differentially expressed genes (DEGs) in resistant and susceptible varieties after pathogen inoculation, noting that most DEGs were up-regulated particularly at 24 hours post-inoculation (HAI).
- Gene analysis revealed that resistant lines activated systemic acquired resistance, while susceptible lines showed responses related to stress and defense at later time points (72 HAI), identifying potential candidate genes for resistance mechanisms shared with Arabidopsis thaliana.
Background: Heterosis or hybrid vigour is a phenomenon in which hybrid progeny exhibit superior performance compared to their parental inbred lines. Most commercial Chinese cabbage cultivars are F1 hybrids and their level of hybrid vigour is of critical importance and is a key selection criterion in the breeding system.
Results: We have characterized the heterotic phenotype of one F1 hybrid cultivar of Chinese cabbage and its parental lines from early- to late-developmental stages of the plants.
Chinese cabbage (Brassica rapa L. var. pekinensis) is an important vegetable in Asia, and most Japanese commercial cultivars of Chinese cabbage use an F1 hybrid seed production system.
View Article and Find Full Text PDFFusarium yellows caused by Fusarium oxysporum f. sp. conglutinans is an important disease of Brassica worldwide.
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