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  1. Article ; Online: Loss function of SL (sekiguchi lesion) in the rice cultivar Minghui 86 leads to enhanced resistance to (hemi)biotrophic pathogens.

    Tian, Dagang / Yang, Fang / Niu, Yuqing / Lin, Yan / Chen, Zaijie / Li, Gang / Luo, Qiong / Wang, Feng / Wang, Mo

    BMC plant biology

    2020  Volume 20, Issue 1, Page(s) 507

    Abstract: ... in an indica rice restore line Minghui 86 (MH86), named as sl-MH-1, - 2 and - 3, all of which present ...

    Abstract Background: Serotonin, originally identified as a neurotransmitter in mammals, functions as an antioxidant to scavenge cellular ROS in plants. In rice, the conversion of tryptamine to serotonin is catalyzed by SL (sekiguchi lesion), a member of cytochrome P450 monooxygenase family. The sl mutant, originated from rice cultivar Sekiguchi-asahi, exhibits spontaneous lesions, whereas its immune responses to pathogens have not been clearly characterized.
    Results: Here we identified three allelic mutants of SL in an indica rice restore line Minghui 86 (MH86), named as sl-MH-1, - 2 and - 3, all of which present the typical lesions under normal growth condition. Compared with those in MH86, the serotonin content in sl-MH-1 is dramatically decreased, whereas the levels of tryptamine and L-trytophan are significantly increased. The sl-MH-1 mutant accumulates high H
    Conclusions: Our results indicate that SL, involving in the final step of serotonin biosynthesis, negatively regulates rice resistance against (hemi)biotrophic pathogens via compromising the PTI responses and defense hormones accumulation.
    MeSH term(s) Disease Resistance/genetics ; Genes, Plant/genetics ; Genes, Plant/physiology ; Loss of Function Mutation/genetics ; Loss of Function Mutation/physiology ; Oryza/genetics ; Oryza/immunology ; Oxidative Stress ; Plant Diseases/immunology ; Plant Diseases/microbiology ; Plant Leaves/metabolism ; Reactive Oxygen Species/metabolism ; Serotonin/metabolism ; Tryptamines/metabolism
    Chemical Substances Reactive Oxygen Species ; Tryptamines ; Serotonin (333DO1RDJY) ; tryptamine (422ZU9N5TV)
    Language English
    Publishing date 2020-11-04
    Publishing country England
    Document type Journal Article
    ISSN 1471-2229
    ISSN (online) 1471-2229
    DOI 10.1186/s12870-020-02724-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Loss function of SL (sekiguchi lesion) in the rice cultivar Minghui 86 leads to enhanced resistance to (hemi)biotrophic pathogens

    Tian, Dagang / Yang, Fang / Niu, Yuqing / Lin, Yan / Chen, Zaijie / Li, Gang / Luo, Qiong / Wang, Feng / Wang, Mo

    BMC Plant Biol. 2020 Dec., v. 20, no. 1 p.507-507

    2020  

    Abstract: ... in an indica rice restore line Minghui 86 (MH86), named as sl-MH-1, − 2 and − 3, all of which present ...

    Abstract BACKGROUND: Serotonin, originally identified as a neurotransmitter in mammals, functions as an antioxidant to scavenge cellular ROS in plants. In rice, the conversion of tryptamine to serotonin is catalyzed by SL (sekiguchi lesion), a member of cytochrome P450 monooxygenase family. The sl mutant, originated from rice cultivar Sekiguchi-asahi, exhibits spontaneous lesions, whereas its immune responses to pathogens have not been clearly characterized. RESULTS: Here we identified three allelic mutants of SL in an indica rice restore line Minghui 86 (MH86), named as sl-MH-1, − 2 and − 3, all of which present the typical lesions under normal growth condition. Compared with those in MH86, the serotonin content in sl-MH-1 is dramatically decreased, whereas the levels of tryptamine and L-trytophan are significantly increased. The sl-MH-1 mutant accumulates high H₂O₂ level at its lesion sites and is more sensitive to exogenous H₂O₂ treatment than the wild type. When treated with the reductant vitamin C (Vc), the lesion formation on sl-MH-1 leaves could be efficiently suppressed. In addition, sl-MH-1 displayed more resistant to both the blast fungus and blight bacteria, Pyricularia oryzae (P. oryzae, teleomorph: Magnaporthe oryzae) and Xanthomonas oryzae pv. Oryzae (Xoo), respectively. The pathogen-associated molecular patterns (PAMPs)-triggered immunity (PTI) responses, like reactive oxygen species (ROS) burst and callose deposition, were enhanced in sl-MH-1. Moreover, loss function of SL resulted in higher resting levels of the defense hormones, salicylic acid and jasmonic acid. The RNA-seq analysis indicated that after P. oryzae infection, transcription of the genes involved in reduction-oxidation regulation was the most markedly changed in sl-MH-1, compared with MH86. CONCLUSIONS: Our results indicate that SL, involving in the final step of serotonin biosynthesis, negatively regulates rice resistance against (hemi)biotrophic pathogens via compromising the PTI responses and defense hormones accumulation.
    Keywords Magnaporthe oryzae ; Xanthomonas oryzae pv. oryzae ; ascorbic acid ; biosynthesis ; blight ; callose ; cultivars ; cytochrome P-450 ; fungi ; immunity ; jasmonic acid ; mutants ; neurotransmitters ; reactive oxygen species ; reducing agents ; rice ; salicylic acid ; sequence analysis ; serotonin ; teleomorphs ; tryptamine
    Language English
    Dates of publication 2020-12
    Size p. 507.
    Publishing place BioMed Central
    Document type Article ; Online
    ZDB-ID 2059868-3
    ISSN 1471-2229
    ISSN 1471-2229
    DOI 10.1186/s12870-020-02724-6
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Extensive sequence divergence between the reference genomes of two elite indica rice varieties Zhenshan 97 and Minghui 63.

    Zhang, Jianwei / Chen, Ling-Ling / Xing, Feng / Kudrna, David A / Yao, Wen / Copetti, Dario / Mu, Ting / Li, Weiming / Song, Jia-Ming / Xie, Weibo / Lee, Seunghee / Talag, Jayson / Shao, Lin / An, Yue / Zhang, Chun-Liu / Ouyang, Yidan / Sun, Shuai / Jiao, Wen-Biao / Lv, Fang /
    Du, Bogu / Luo, Meizhong / Maldonado, Carlos Ernesto / Goicoechea, Jose Luis / Xiong, Lizhong / Wu, Changyin / Xing, Yongzhong / Zhou, Dao-Xiu / Yu, Sibin / Zhao, Yu / Wang, Gongwei / Yu, Yeisoo / Luo, Yijie / Zhou, Zhi-Wei / Hurtado, Beatriz Elena Padilla / Danowitz, Ann / Wing, Rod A / Zhang, Qifa

    Proceedings of the National Academy of Sciences of the United States of America

    2016  Volume 113, Issue 35, Page(s) E5163–71

    Abstract: ... We conducted map-based sequencing of two indica rice lines, Zhenshan 97 (ZS97) and Minghui 63 (MH63 ...

    Abstract Asian cultivated rice consists of two subspecies: Oryza sativa subsp. indica and O. sativa subsp. japonica Despite the fact that indica rice accounts for over 70% of total rice production worldwide and is genetically much more diverse, a high-quality reference genome for indica rice has yet to be published. We conducted map-based sequencing of two indica rice lines, Zhenshan 97 (ZS97) and Minghui 63 (MH63), which represent the two major varietal groups of the indica subspecies and are the parents of an elite Chinese hybrid. The genome sequences were assembled into 237 (ZS97) and 181 (MH63) contigs, with an accuracy >99.99%, and covered 90.6% and 93.2% of their estimated genome sizes. Comparative analyses of these two indica genomes uncovered surprising structural differences, especially with respect to inversions, translocations, presence/absence variations, and segmental duplications. Approximately 42% of nontransposable element related genes were identical between the two genomes. Transcriptome analysis of three tissues showed that 1,059-2,217 more genes were expressed in the hybrid than in the parents and that the expressed genes in the hybrid were much more diverse due to their divergence between the parental genomes. The public availability of two high-quality reference genomes for the indica subspecies of rice will have large-ranging implications for plant biology and crop genetic improvement.
    Language English
    Publishing date 2016-08-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 209104-5
    ISSN 1091-6490 ; 0027-8424
    ISSN (online) 1091-6490
    ISSN 0027-8424
    DOI 10.1073/pnas.1611012113
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Improvement of Yield and Its Related Traits for Backbone Hybrid Rice Parent Minghui 86 Using Advanced Backcross Breeding Strategies

    Hong-jun ZHANG / Hui WANG / Guo-you YE / Yi-liang QIAN / Ying-yao SHI / Jia-fa XIA / Ze-fu LI / Ling-hua ZHU / Yong-ming GAO / Zhi-kang LI

    Journal of Integrative Agriculture, Vol 12, Iss 4, Pp 561-

    2013  Volume 570

    Abstract: ... were developed by crossing Minghui 86 (recurrent parent, RP) with three high-yielding varieties (donors ... promising ILs that had significantly higher mean grain yields than Minghui 86 in two environments. A total ... materials and genetic information for further improvement of the grain yield for Minghui 86 ...

    Abstract How to overcome yield stagnation is a big challenge to rice breeders. An effective method for quickly developing new cultivars is to further improve an outstanding cultivar. In this study, three advanced backcross populations under yield selection that consist of 123 BC2F2:4 introgression lines (ILs) were developed by crossing Minghui 86 (recurrent parent, RP) with three high-yielding varieties (donors), namely, ZDZ057, Fuhui 838, and Teqing, respectively. The progeny testing allowed the identification of 12 promising ILs that had significantly higher mean grain yields than Minghui 86 in two environments. A total of 55 QTLs that affect grain yield and its related traits were identified, which included 50 QTLs that were detected using the likelihood ratio test based on stepwise regression (RSTEP-LRT) method, and eight grain yield per plant (GY) QTLs were detected using chi-squared (c2) test. Among these QTLs, five QTLs were simultaneously detected in different populations and 22 QTLs were detected in both environments. The beneficial donor alleles for increased GY and its related traits were identified in 63.6% (35 out of 55) of the QTLs. These promising ILs and QTLs identified will provide the elite breeding materials and genetic information for further improvement of the grain yield for Minghui 86 through pyramiding breeding.
    Keywords rice (Qryza sativa L.) ; quantitative trait locus (QTL) ; selective introgression population ; yield ; Agriculture (General) ; S1-972
    Subject code 669
    Language English
    Publishing date 2013-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Improvement of Yield and Its Related Traits for Backbone Hybrid Rice Parent Minghui 86 Using Advanced Backcross Breeding Strategies

    ZHANG, Hong-jun / Guo-you YE / Hui WANG / Jia-fa XIA / Ling-hua ZHU / Yi-liang QIAN / Ying-yao SHI / Yong-ming GAO / Ze-fu LI / Zhi-kang LI

    Chinese Academy of Agricultural Sciences Journal of integrative agriculture. 2013 Apr., v. 12

    2013  

    Abstract: ... were developed by crossing Minghui 86 (recurrent parent, RP) with three high-yielding varieties (donors ... promising ILs that had significantly higher mean grain yields than Minghui 86 in two environments. A total ... materials and genetic information for further improvement of the grain yield for Minghui 86 ...

    Abstract How to overcome yield stagnation is a big challenge to rice breeders. An effective method for quickly developing new cultivars is to further improve an outstanding cultivar. In this study, three advanced backcross populations under yield selection that consist of 123 BC2F2:4 introgression lines (ILs) were developed by crossing Minghui 86 (recurrent parent, RP) with three high-yielding varieties (donors), namely, ZDZ057, Fuhui 838, and Teqing, respectively. The progeny testing allowed the identification of 12 promising ILs that had significantly higher mean grain yields than Minghui 86 in two environments. A total of 55 QTLs that affect grain yield and its related traits were identified, which included 50 QTLs that were detected using the likelihood ratio test based on stepwise regression (RSTEP-LRT) method, and eight grain yield per plant (GY) QTLs were detected using chi-squared (c2) test. Among these QTLs, five QTLs were simultaneously detected in different populations and 22 QTLs were detected in both environments. The beneficial donor alleles for increased GY and its related traits were identified in 63.6% (35 out of 55) of the QTLs. These promising ILs and QTLs identified will provide the elite breeding materials and genetic information for further improvement of the grain yield for Minghui 86 through pyramiding breeding.
    Keywords alleles ; backcrossing ; grain yield ; high-yielding varieties ; hybrids ; introgression ; new variety ; progeny testing ; quantitative trait loci
    Language English
    Dates of publication 2013-04
    Size p. 561-570.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 2660426-7
    ISSN 2095-3119
    ISSN 2095-3119
    DOI 10.1016/S2095-3119(13)60273-7
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: New gene for bacterial blight resistance in rice located on chromosome 12 identified from minghui 63, an elite restorer line.

    Chen, Huilan / Wang, Shiping / Zhang, Qifa

    Phytopathology

    2002  Volume 92, Issue 7, Page(s) 750–754

    Abstract: ... worldwide. A new dominant gene for bacterial blight resistance in rice, Xa25(t), was identified from Minghui ...

    Abstract ABSTRACT Bacterial blight, caused by Xanthomonas oryzae pv. oryzae, is a serious disease of rice worldwide. A new dominant gene for bacterial blight resistance in rice, Xa25(t), was identified from Minghui 63, a restorer line for a number of rice hybrids that are widely cultivated in China. This gene conferred resistance to Philippine race 9 (PXO339) of X. oryzae pv. oryzae in both seedling and adult stages. It was mapped to the centromeric region of chromosome 12, 2.5 cM from a disease resistance gene-homologous sequence, NBS109, and 7.3 cM from a restriction fragment length polymorphism marker, G1314. The genomic location of this gene is similar to the previously identified blast resistance genes, Pi-ta and Pi-ta2.
    Language English
    Publishing date 2002-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208889-7
    ISSN 1943-7684 ; 0031-949X
    ISSN (online) 1943-7684
    ISSN 0031-949X
    DOI 10.1094/PHYTO.2002.92.7.750
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: [Obtaining stem borer-resistant homozygous transgenic lines of Minghui 81 harboring novel cry1Ac gene via particle bombardment].

    Zeng, Qian-Chun / Wu, Qian / Zhou, Kai-Da / Feng, De-Jiang / Wang, Feng / Su, Jun / Altosaar, Illimar / Zhu, Zhen

    Yi chuan xue bao = Acta genetica Sinica

    2002  Volume 29, Issue 6, Page(s) 519–524

    Abstract: ... protein targeted to endoplasmic retention was successfully transferred into Minghui 81 (Oryza sativa L. subsp ...

    Abstract A modified cry1Ac gene was generated by fusing with Lys-Asp-Glu-Lue (KDEL), an endoplasmic reticulum retention signal at the 3'-ends, with signal peptide coding sequence of Soybean kunitz trypsin inhibitor (SKTI) at the 5'-ends. Vector containing the modified cry1Ac gene coding region flanked by the corn ubiquitin 1 promoter and the nopaline synthase gene (nos) terminator with Hygromycin Phosphotransferase (hpt) gene as a plant selection marker was constructed. The modified cry1Ac gene in which toxic protein targeted to endoplasmic retention was successfully transferred into Minghui 81 (Oryza sativa L. subsp. indica), an elite restoring line of commercial CMS indica hybrid rice, through particle bombardment and obtained fertile transformants. Homozygous transgenic rice lines were obtained in the third generation exploiting self-seed set reproduction and HygromycinB selection. These transgenic lines were confirmed with polymerase chain reaction (PCR) amplification, Southern blotting and ELISA detection. Pest insect-resistant bioassay indicated that some of the homozygous cry1Ac-transgenic rice plants of T2 progeny showed high-level resistance against striped stem borer (Chilo suppressalis) at field trials.
    MeSH term(s) Animals ; Bacterial Proteins/genetics ; Bacterial Toxins/genetics ; Blotting, Southern/methods ; Endotoxins/genetics ; Gene Expression ; Hemolysin Proteins ; Homozygote ; Insecticides ; Moths ; Oryza/genetics ; Pest Control, Biological/methods ; Plants, Genetically Modified/genetics ; Polymerase Chain Reaction/methods
    Chemical Substances Bacterial Proteins ; Bacterial Toxins ; Endotoxins ; Hemolysin Proteins ; Insecticides ; insecticidal crystal protein, Bacillus Thuringiensis
    Language Chinese
    Publishing date 2002-06
    Publishing country China
    Document type English Abstract ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 190603-3
    ISSN 0379-4172
    ISSN 0379-4172
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Features of the expressed sequences revealed by a large-scale analysis of ESTs from a normalized cDNA library of the elite indica rice cultivar Minghui 63.

    Zhang, Jianwei / Feng, Qi / Jin, Caoqing / Qiu, Deyun / Zhang, Lida / Xie, Kabin / Yuan, Dejun / Han, Bin / Zhang, Qifa / Wang, Shiping

    The Plant journal : for cell and molecular biology

    2005  Volume 42, Issue 5, Page(s) 772–780

    Abstract: ... tissues of the indica cultivar Minghui 63. After trimming, processing and analysis, 17 835 unique ... novel, and at least 70 were indica specific. Comparison of the Minghui 63 sequences with the ESTs/full ...

    Abstract The indica subspecies of cultivated rice occupies the largest area of rice production in the world. However, a systematic analysis of cDNA sequences from the indica subspecies has not been performed. The aim of the present study was to collect and analyze the expressed sequence tags (ESTs) of indica rice on a large scale. A total of 39 208 raw sequences were generated from a normalized cDNA library prepared by use of 15 different tissues of the indica cultivar Minghui 63. After trimming, processing and analysis, 17 835 unique sequences were obtained, each of which presumably represents a unique gene. Of these sequences, 2663 were novel, and at least 70 were indica specific. Comparison of the Minghui 63 sequences with the ESTs/full-length cDNAs in GenBank revealed a large number of deletion/insertion/substitution (DIS) at both the inter- and intra-subspecific levels. The overall number of polymorphisms in the expressed sequences was higher in the inter-subspecific comparisons than in the intra-subspecific comparisons. However, the extent of DIS-based polymorphism was highly variable among different rice varieties. In total, 15 726 unique sequences, including 697 novel sequences, were assigned to regions where large numbers of quantitative trait loci (QTLs) for agronomic traits had been detected previously. These results may be useful for developing new molecular markers for genetic mapping, detecting allelic polymorphisms associated with phenotypic variations between rice varieties, and facilitating QTL cloning by providing the starting points for candidate-gene identification.
    MeSH term(s) Expressed Sequence Tags ; Gene Expression Profiling ; Gene Library ; Oryza/genetics ; Oryza/metabolism ; Polymorphism, Single Nucleotide ; Quantitative Trait Loci
    Language English
    Publishing date 2005-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1088037-9
    ISSN 1365-313X ; 0960-7412
    ISSN (online) 1365-313X
    ISSN 0960-7412
    DOI 10.1111/j.1365-313X.2005.02408.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: [Callus induction and regeneration from mature seeds of indica rice minghui 63 and anti-fungal assay of transgenic rice plants].

    Wang, Li-Jiang / Ming, Xiao-Tian / An, Cheng-Cai / Yuan, Hua-Yi / Chen, Zhang-Liang

    Sheng wu gong cheng xue bao = Chinese journal of biotechnology

    2002  Volume 18, Issue 3, Page(s) 323–326

    Abstract: A large number of callus from mature seeds of indica rice minghui 63 were obtained through pre ... gene was transferred into indica rice minghui 63 by using agrobacterium with the help of bombardment ... showed that the trichosanthin gene had been transferred into genome of minghui 63 and expressed ...

    Abstract A large number of callus from mature seeds of indica rice minghui 63 were obtained through pre-induction on medium with 2 mg/L 2,4-D but without inorganic and organic components for 9 days. Trichosanthin gene was transferred into indica rice minghui 63 by using agrobacterium with the help of bombardment and the transgenic plants were obtained by inducing regeneration. Southern and Western blot analysis showed that the trichosanthin gene had been transferred into genome of minghui 63 and expressed in rice plants. The anti-fungal assay suggested that transgenic rice plants enhanced resistance to infection of Pyricularia oryzae.
    MeSH term(s) Mitosporic Fungi/drug effects ; Oryza/genetics ; Oryza/microbiology ; Plant Diseases/microbiology ; Plants, Genetically Modified ; Regeneration ; Seeds/physiology ; Trichosanthin/genetics
    Chemical Substances Trichosanthin (60318-52-7)
    Language Chinese
    Publishing date 2002-05
    Publishing country China
    Document type English Abstract ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1042206-7
    ISSN 1000-3061 ; 1042-749X
    ISSN 1000-3061 ; 1042-749X
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: New gene for bacterial blight resistance in rice located on chromosome 12 identified from Minghui 63, an elite restorer line

    Chen, H / Wang, S / Zhang, Q

    Phytopathology. July 2002. v. 92 (7)

    2002  

    Abstract: ... A new dominant gene for bacterial blight resistance in rice, Xa25(t), was identified from Minghui 63 ...

    Abstract Bacterial blight, caused by Xanthomonas oryzae pv. oryzae, is a serious disease of rice worldwide. A new dominant gene for bacterial blight resistance in rice, Xa25(t), was identified from Minghui 63, a restorer line for a number of rice hybrids that are widely cultivated in China. This gene conferred resistance to Philippine race 9 (PXO339) of X. oryzae pv. oryzae in both seedling and adult stages. It was mapped to the centromeric region of chromosome 12, 2.5 cM from a disease resistance gene-homologous sequence, NBS109, and 7.3 cM from a restriction fragment length polymorphism marker, G1314. The genomic location of this gene is similar to the previously identified blast resistance genes, Pi-ta and Pi-ta2.
    Keywords Oryza sativa ; hybrids ; inbred lines ; Xanthomonas oryzae pv. oryzae ; disease resistance ; blight ; genetic resistance ; chromosome mapping
    Language English
    Dates of publication 2002-07
    Size p. 750-754.
    Document type Article
    ZDB-ID 208889-7
    ISSN 1943-7684 ; 0031-949X
    ISSN (online) 1943-7684
    ISSN 0031-949X
    Database NAL-Catalogue (AGRICOLA)

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