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Effect of Morphological Traits on sheath blight resistance in Rice

Acta Botanica Sinica 2003年第7期45卷 825-831页

作者：韩月澎邢永忠顾世梁陈宗祥潘学彪陈秀兰扬州大学农学院扬州225009 江苏省里下河地区农业科学研究所扬州225002 华中农业大学作物遗传改良国家重点实验室武汉430070

sheath blight, caused by the Rhizoctonia solani Kuhn, is one of the most serious diseases of rice (Oryza sativa L.). The relationship between morphological traits and sheath blight resistance was investigated in 1999 and 2000 by using a segregant population consisting of 240 inbred recombination lines, derived from an elite combination of Zhenshan 97 X Minghui 63. Partial correlation analysis between phenotypic data (morphological characteristics and heading date (HD)) and sheath blight ratings (SBR) showed that only one trait, plant compactness, was significantly correlated with resistance to sheath blight in both 1999 and 2000, eight traits, such as plant height, heading date, and penultimate leaf angle, were significantly correlated with SBR in either of the two years, and the remaining 10 morphological traits were not consistently associated with SBR in the two years. A major quantitative trait locus (QTL) controlling plant compactness was found to be in the site on chromosome 9 adjacent to the region responsible for qSB9, a major QTLs conferring sheath blight resistance. One out of the three QTLs contributing to a penultimate leaf angle was mapped approximately on the same region as another sheath blight resistance QTL, qSB5, located on chromosome 5. Whereas, no QTLs underlying most other traits was detected on the chromosomal region correlated with sheath blight resistance QTL. The results in the present study suggested that the morphological traits were not the main factors responsible for the SBR separation among the recombinant inbred lines (RILs) population. Nevertheless, some morphological characteristics had some indirect influence on expression of sheath blight resistance genes through altering a microclimate on paddy field so as to influence the infection of the pathogen and development of the disease. An efficient approach in resistance breeding to sheath blight was recommended by pyramiding major QTLs for sheath blight resistance and selecting those

关键词： rice (Oryza sativa) morphological characteristics sheath blight resistance

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Mapping of QTLs for sheath blight resistance Using Recombinant Inbred Lines of Rice(Oryza sativa L.)

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Agricultural Science & Technology 2015年第7期16卷 1374-1377页

作者：杨娟王莉娟黄胜东李余生江苏省农业科学院粮食作物研究所江苏南京210014 江苏省连云港市赣榆县农业委员会江苏赣榆222100

A recombinant inbred line （RIL） population composed of 157 lines derived from an inter-subspecific hybrid of Daguandao/IR28 by the single seed descent method was used as materials, and the quantitative trait loci （QTLs） coffering the resistance to sheath blight in the 157 RILs and the parents were detected using the toothpick inoculation method. The disease indexes of rice sheath blight in the two parents and 157 RILs were scored and the QTLs responsible for rice sheath blight resistance were detected accordingly by QTL Cartographer software. The results showed that a total of 4 QTLs （qsbl, qsb2, qsb5-1, qsb5-2） conferring sheath blight resistance were detected on chromosomes 1, 2 and 5, and their variance explained ranged from 10.41% to 36.92%. The additive effect of qsb5-1 was negative, indicat- ing that the QTLs derived from donor parent IR 28 could enhance the resistance to sheath blight. However, the additive effects of qsbl, qsb2 and qsb5-2 were positive, indicating that the QTLs derived from donor parent Daguandao weakened the resis- tance to sheath blight.

关键词： sheath blight resistance Recombinant inbred lines Quantitative trait locus

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Mapping QTLs Associated with sheath blight resistance Using Chromosome Segment Substitution Lines of Rice(Oryza sativa L.)

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Agricultural Science & Technology 2014年第5期15卷 756-759页

作者：林静张所兵张云辉汪迎节方先文江苏省农业科学院粮食作物研究所/江苏省种质资源保护与利用研究中心/江苏省优质水稻工程技术研究中心/国家水稻改良中心南京分中心江苏南京210014

In this study, a population of 119 chromosome segment substitution lines （CSSLs） derived from backcross between indica 9311 and japonica Nipponbare was employed to map quantitative trait loci （QTL） associated with sheath blight resis-tance in rice with toothpick inoculation method. A total of three sheath blight resis-tance-associated QTLs （qsb8-1, qsb8-2 and qsb8-3） were identified, which were lo-cated on adjacent molecular markers RM3262, RM5485 and RM3496 of chromo-some 8; the genetic interval was 81.7cM-91.7cM, 91.7cM-108.1cM and 108.1cM-119.6cM, respectively. The additive effect of qsb8-2 was negative, indicating that sheath blight resistance of susceptible parent harboring qsb8-2 fragment was en-hanced; additive effects of qsb8-1 and qsb8-3 were positive, indicating that sheath blight resistance of susceptible parent harboring qsb8-1 and qsb8-3 fragments was reduced.

关键词： Rice sheath blight resistance Chromosome segment substitution lines(CSSLs) Quantitative trait locus (QTL) mapping

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resistance Evaluation to sheath blight in Transgenic Rice Lines

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Rice science 2004年第3期11卷 95-100页

作者： LIAi-hong XuXin-ping DAIZheng-yuan CHENZong-xiang LIBao-jian ZHANGHong-xi PANXue-biao DepartmentofAgronomy AgriculturalCollegeYangzhouUniversityYangzhou225009China Bio-EngineeringCenter ZhongshanUniversityGuangzhou510275China LixiaheAgriculturalInstituteofJiangsuProvince Yangzhou225002China

resistance of forty-one homozygous rice lines transformed with chitinase gene (RC24) and β-1,3 -glucanse gene β-1,3-Glu) to sheath blight was analyzed by inoculation. Among different lines, the resistance had significant differences according to the result by cluster analysis. The lines could be categorized into resistant, moderately resistant, moderately susceptible and susceptible types, while 92.1% of which belonging to moderately resistant or moderately susceptible type. For different resistant or susceptible lines, the resistance to rice sheath blight was remarkable correlated with the chitinase activity of transgenic lines except resistant type lines, in which enzyme activity coded by target gene was lower than moderately resistant type. The chitinase activity of transgenic lines tested at different time after inoculation or different organs of the same plant was uniform, which suggested that the expression of chitinase gene was constitutive in nature. Check varieties chitinase activity would change at different time after inoculation and reach a peak at sometime, but it had no difference at various pans of the same plant.

关键词： rice ttansgenic lines sheath blight resistance cluster analysis chitinase activity

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Overexpression of OsOSM1 gene enhances rice resistance to sheath blight caused by Rhizoctonia solani

Overexpression of OsOSM1 gene enhances rice resistance to sh...

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中国植物病理学会第十二届青年学术研讨会

作者： Xiang Xue Zixiang Cao Xuting Zhang Yu Wang YaFang Zhang Zongxiang Chen Xuebiao Pan Shimin Zuo Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University

sheath blight（SB）,caused by Rhizoctonia solani,is one of the most destructive rice diseases *** has been difficult to generate SB resistant variety through conventional breeding because of typically quantitative nature of rice resistance to ***,we found that the gene Os12g0569500（named OsOSM1）,belongs to TLP-PA subfamily,was strongly induced expression by *** in SB resistant variety *** the study,we identified five genes including OsOSM1 that showed high identity on amino acid ***,only OsOSM1 was found highly expressed at rice booting stage and in leaf sheath,which was correlated with SB serious development in *** of OsOSM1 was strongly induced by methyl jasmonate（MeJA） and reduced by JA biosynthesis inhibitor salicylhydroxamic acid（SHAM）,while was not apparently affected by ethephon（ET）,salicylic acid（SA）and kinetin（KT）.OsOSM1 was localized to plasma *** of OsOSM1 could significantly up-regulate the expression of pathogenesis-related genes and strongly enhanced rice resistance to ***,we did not found apparently alternation of OsOSM1 overexpression lines compared with the wild type on morphologies and grain *** together,our results demonstrate that OsOSM1 plays an important role in rice SB resistance and can be used in rice breeding toward SB resistance.

关键词： Rice OsOSM1 gene expression sheath blight resistance agronomic traits

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A single Amino-acid Substitution of Polygalacturonase Inhabiting Protein （OsPGIP2） Allows Rice to Acquire Higher resistance to sheath blight

A single Amino-acid Substitution of Polygalacturonase Inhabi...

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中国植物病理学会2017年学术年会

作者： Chen Xijun Li Lili Zhang Lina Xu Bin Chen Zhongxiang Zuo Shimin Xu Jingyou Horticulture and Plant Protection College Yangzhou University Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Key Laboratory of Plant Functional Genomics of the Ministry of Education College of AgricultureYangzhou University

A possible strategy to control plant diseases is improvement of natural plant defense mechanisms against the infection of *** one kind of leucine-rich repeat proteins,polygalacturonase inhibiting proteins（PGIPs） have been found involved in plant defense against the pathogens by inhibiting the activity of fungal endo-polygalacturonases（endo-PGs）.To dig more resistant gene,a single amino acid of the OsPGIP2,which has no effect on the endo-PGs activity of Rhizoctonia solani,was substituted and it allowed OsPGIP2 to acquire the inhibiting *** of OsPGIP2 significandy increased rice resistance to rice sheath blight and counteracted the tissue degradation caused by ***,OsPGIP2 overexpression did not affect rice agronomic traits or yield *** these indicated that OsPGIP2 was an important potential gene that could be applied to rice sheath blight resistance breeding.

关键词： Single amino acid substitution Polygalacturonase inhibiting protein sheath blight resistance Oryzae sativa

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Overexpression of OsOSM1 Gene Enhanced Rice resistance to sheath blight Caused by Rhizoctonia solani

Overexpression of OsOSM1 Gene Enhanced Rice Resistance to Sh...

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中国植物病理学会2016年学术年会

作者： XUE Xiang CAO Zi-xiang ZHANG Xu-ting WANG-Yu ZHANG Ya-fang CHEN Zong-xiang PAN Xue-biao ZUO Shi-min Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University

sheath blight（SB）,caused by Rhizoctonia solani,is one of the most destructive rice diseases *** has been difficult to generate SB resistant variety through conventional breeding because of typically quantitative nature of rice resistance to ***,we found that the gene Os12g0569500（named OsOSM1）,belongs to TLP-PA subfamily,was strongly induced expression by *** in SB resistant variety *** the study,we identified five genes including OsOSM1 that showed high identity on amino acid ***,only OsOSM1 was found highly expressed at rice booting stage and in leaf sheath,which was correlated with SB serious development in *** of OsOSM1 was strongly induced by methyl jasmonate（MeJA） and reduced by JA biosynthesis inhibitor salicylhydroxamic acid（SHAM）,while was not apparently affected by ethephon（ET）,salicylic acid（SA） and kinetin（KT）.OsOSM1 was localized to plasma *** of OsOSM1 could significantly up-regulate the expression of pathogenesis-related genes and strongly enhanced rice resistance to ***,we did not found apparently alternation of OsOSM1 overexpression lines compared with the wild type on morphologies and grain *** together,our results demonstrate that OsOSM1 plays an important role in rice SB resistance and can be used in rice breeding toward SB resistance.

关键词： Rice OsOSM1 Gene expression sheath blight resistance Agronomic traits

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Overexpression of OsOSM1 gene enhanced rice resistance to sheath blight caused by Rhizoctonia solani

Overexpression of OsOSM1 gene enhanced rice resistance to sh...

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江苏省遗传学会2016年学术年会

作者： Xiang Xue Zixiang Cao Xuting Zhang Yu Wang Yafang Zhang Zongxiang Chen Xuebiao Pan Shimin Zuo Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University

sheath blight（SB）,caused by Rhizoctonia solani,is one of the most destructive rice diseases *** has been difficult to generate SB resistant variety through conventional breeding because of typically quantitative nature of rice resistance to ***,we found that the gene Os12 g0569500（named OsOSM1）,belongs to TLP-PA subfamily,was strongly induced expression by *** in SB resistant variety *** the study,we identified five genes including OsOSM1 that showed high identity on amino acid ***,only OsOSM1 was found highly expressed at rice booting stage and in leaf sheath,which was correlated with SB serious development in *** of OsOSM1 was strongly induced by methyl jasmonate（MeJA） and reduced by JA biosynthesis inhibitor salicylhydroxamic acid（SHAM）,while was not apparently affected by ethephon（ET）,salicylic acid（SA） and kinetin（KT）.OsOSM1 was localized to plasma *** of OsOSM1 could significantly up-regulate the expression of pathogenesis-related genes and strongly enhanced rice resistance to ***,we did not found apparently alternation of OsOSM1 overexpression lines compared with the wild type on morphologies and grain *** together,our results demonstrate that OsOSM1 plays an important role in rice SB resistance and can be used in rice breeding toward SB resistance.

关键词： Rice OsOSM1 gene expression sheath blight resistance agronomic traits

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Overexpression of OsPGIP1 enhances rice resistance to sheath blight

Overexpression of OsPGIP1 enhances rice resistance to sheath...

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中国植物病理学会第十二届青年学术研讨会

作者： Xijun Chen Yu Chen Bin Xu Linan Zhang Zongxiang Chen Yunhui Tong Shimin Zuo Jingyou Xu Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops Key Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University Horticulture and Plant Protection College Yangzhou University

Rice sheath blight（SB）,caused by necrotrophic pathogen Rhizoctonia solani,is one of the most destructive rice diseases and no major resistance genes are ***-inhibiting proteins（PGIPs） are extracellular leucine-rich repeat（LRR） proteins and play important roles in plant defense against different pathogenic fungi by counteracting secreted fungal ***,the role of PGIPs in conferring resistance to rice SB remains to be thoroughly *** we showed that OsPGIPl is capable of inhibiting PGs derived from *** real-time RTPCR results indicated that resistant rice cultivars YSBR1 and Jasmine 85 express significantly higher levels of OsPGIPl than susceptible cultivar *** results also show that OsPGIPl is most highly expressed at the late tillering stage in the sheath of YSBR1,coinciding with the critical stage of SB development in *** importantly,the OsPGIPl level is highly elevated by inoculation with *** in resistant cultivars,but not in susceptible *** of OsPGIPl significantly increased rice resistance to SB and inhibited tissue degradation caused by *** secreted ***,OsPGIPl overexpression did not affect rice agronomic traits or yield ***,our results not only demonstrate the important role of OsPGIPl in combatting the rice SB disease,but also provide a new avenue to the improvement of rice SB resistance by manipulating an endogenous gene.

关键词： Oryzae sativa polygalacturonase polygalacturonase-inhibiting protein gene 1 sheath blight resistance overexpression

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