Local Citrus Genetic Resources and Their Polymethoxyflavones Content in Northern Part of Okinawa Island

Inafuku-Teramoto, Sayuri; Yamamoto, Masashi; Kinjyo, Hideyasu; Kitajima, Akira; Wada, Kōji; Kawamitsu, Yoshinobu

doi:10.2503/hrj.9.263

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…Consistent with that hypothesis, the results of the current study show that the matK sequences from C. keraji (Keraji and Kabuchii), C. oto , and C. nobilis (Kunenbo) are identical. In agreement with the results of a previous morphological characterization [48], the results of our analysis suggest that C. nobilis (Kunenbo) is also the maternal origin of C. tarogayo .…”

Section: Resultssupporting

confidence: 92%

Phylogenetic Relationships of Citrus and Its Relatives Based on matK Gene Sequences

et al. 2013

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The genus Citrus includes mandarin, orange, lemon, grapefruit and lime, which have high economic and nutritional value. The family Rutaceae can be divided into 7 subfamilies, including Aurantioideae. The genus Citrus belongs to the subfamily Aurantioideae. In this study, we sequenced the chloroplast matK genes of 135 accessions from 22 genera of Aurantioideae and analyzed them phylogenetically. Our study includes many accessions that have not been examined in other studies. The subfamily Aurantioideae has been classified into 2 tribes, Clauseneae and Citreae, and our current molecular analysis clearly discriminate Citreae from Clauseneae by using only 1 chloroplast DNA sequence. Our study confirms previous observations on the molecular phylogeny of Aurantioideae in many aspects. However, we have provided novel information on these genetic relationships. For example, inconsistent with the previous observation, and consistent with our preliminary study using the chloroplast rbcL genes, our analysis showed that Feroniella oblata is not nested in Citrus species and is closely related with Feronia limonia. Furthermore, we have shown that Murraya paniculata is similar to Merrillia caloxylon and is dissimilar to Murraya koenigii. We found that “true citrus fruit trees” could be divided into 2 subclusters. One subcluster included Citrus, Fortunella, and Poncirus, while the other cluster included Microcitrus and Eremocitrus. Compared to previous studies, our current study is the most extensive phylogenetic study of Citrus species since it includes 93 accessions. The results indicate that Citrus species can be classified into 3 clusters: a citron cluster, a pummelo cluster, and a mandarin cluster. Although most mandarin accessions belonged to the mandarin cluster, we found some exceptions. We also obtained the information on the genetic background of various species of acid citrus grown in Japan. Because the genus Citrus contains many important accessions, we have comprehensively discussed the classification of this genus.

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Section: Resultssupporting

confidence: 92%

Phylogenetic Relationships of Citrus and Its Relatives Based on matK Gene Sequences

et al. 2013

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“…'Irabuoto' is grown in Yoronjima, which is very close to Okinawa island. Since Kabuchii is distributed on Okinawa island (Inafuku-Teramoto et al, 2010), it is necessary to conduct analysis of genetic relationships of Kabuchii grown on both Amami and Okinawa islands.…”

Section: Discussionmentioning

confidence: 99%

Isozyme and DNA Analyses of Local Citrus Germplasm on Amami Islands, Japan

Yamamoto

Kouno

Nakagawa

et al. 2011

J. Japan. Soc. Hort. Sci.

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“…Shiikuwasha is as an accession bearing fruit with a high PMF content (Inafuku- Teramoto et al, 2010). Thus, in the present study, the PMF content of each accession was evaluated in comparison to the PMF content of 'Shiikuwasha' (33).…”

Section: Analysis Of Polymethoxylated Flavones In Peelmentioning

confidence: 99%

Polymethoxylated Flavone Content of Major Cultivars and Local Accessions of Citrus Cultivated in Kagoshima, Japan

et al. 2019

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In this study, we cultivated 32 major citrus cultivars and local accessions of Kagoshima and one control accession to elucidate the polymethoxylated flavone contents with the purpose of providing information for citrus consumers to promote citrus production in the region. All trees were grafted on trifoliate orange rootstock and cultivated in Kagoshima City, Japan. In general, the Brix values and fruit weights of the major cultivars were higher and heavier than those of the local accessions. The ascorbic acid content of Tankan and Rokugatsu Mikan was high and that of Shiikuwasha, Kabuchii, and Shiikuu was very low. For analysis of polymethoxylated flavones (PMF), important health-promoting components sinensetin, nobiletin, heptamethoxyflavone, and tangeretin were quantified. Cultivar and accession differences in the PMF content were also observed. Nobiletin and tangeretin were found to be major PMF in most accessions, and heptamethoxyflavone was not detected in some species such as Kishu Mikan, Ponkan, Shiikuwasha, and Kuroshima Mikan. In the major cultivars, the PMF contents of Kishu Mikan, Ponkan, and Tankan were found to be high. In the local citrus accessions, Shiikuwasha, its relative, and Kishu Mikan were found to have the highest PMF content, and those of Kabuchii and Kuroshima Mikan were also high. Major cultivars Satsuma mandarin, pummelo, and its relative and the local accession Kunenbo contained little PMF.

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Local Citrus Genetic Resources and Their Polymethoxyflavones Content in Northern Part of Okinawa Island

Cited by 13 publications

References 12 publications

Phylogenetic Relationships of Citrus and Its Relatives Based on matK Gene Sequences

Phylogenetic Relationships of Citrus and Its Relatives Based on matK Gene Sequences

Isozyme and DNA Analyses of Local Citrus Germplasm on Amami Islands, Japan

Polymethoxylated Flavone Content of Major Cultivars and Local Accessions of Citrus Cultivated in Kagoshima, Japan

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