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Novel QTLs from wild rice Oryza longistaminata Confer Strong Tolerance to High Temperature at Seedling Stage

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rice science 2023年第6期30卷 577-586页

作者： FAN Fengfeng CAI Meng LUO Xiong LIU Manman YUAN Huanran CHENG Mingxing Ayaz AHMAD LI Nengwu LI Shaoqing State Key Laboratory of Hybrid rice Key Laboratory for Research and Utilization of Heterosis in Indica Rice of Ministry of Agriculture and Rural AffairsEngineering Research Center for Plant Biotechnology and Germplasm Utilization of Ministry of EducationCollege of Life ScienceWuhan UniversityWuhan 430072China Hubei Hongshan Laboratory Wuhan 430072China

Global warming poses a threat to rice *** heat-tolerant rice is an effective and economical approach to address this *** rice is a valuable genetic resource for developing heat-tolerant crops due to its intricate mechanism for adapting to high *** longistaminata,a widely distributed wild rice species in Africa,may harbor an even richer gene pool for heat tolerance,which remains *** this study,we identified three heat tolerance QTLs from *** at the seedling stage,including novel heat tolerance loci qTT4 and *** findings demonstrated that the *** alleles for these two QTLs can enhance the heat tolerance of rice ***,qTT5 was mapped to a region spanning approximately 287.2 kb,which contains 46 expressing *** the analysis of Gene Ontology and expression differences under heat induction,we identified four candidate *** results lay the foundation for discovering heat tolerance genes underlying *** and developing new genetic resources for heat-tolerant rice breeding.

关键词： wild rice Oryza longistaminata heat tolerance QTL

Identification of quantitative trait loci and candidate genes associated with ABA sensitivity in common wild rice (Oryza rufipogon Griff,)

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Journal of Integrative Agriculture 2017年第11期16卷 2375-2385页

作者： CAI Wen-yang TAN Lu-bin LIU Feng-xia SUN Chuan-qing National Center for Evaluation of Agricultural wild Plants (rice)/Beijing Key Laboratory of Crop Genetic Improvement/Departmentof Plant Genetics and Breeding China Agricultural University Beijing 100193 P.R. China

Abscisic acid （ABA）, as one of the foremost signaling molecules in plants, is an important hormone which plays versatile functions in regulating developmental process and adaptive stress process. A set of introgression lines were previously generated via a backcrossing program using an elite indica cultivar rice Teqing （O. sativa L.） as recipient and an accession of Yuanjiang common wild rice （O. rufipogon Griff.） as donor. In this study, the previously developed introgression lines were evaluated for ABA sensitivity. Here we reported that a total of 14 quantitative trait loci （QTLs） associated with ABA sensitivity were identified. An ABA sensitive introgression line, YIL53, was identified and characterized. Physiological characterization, including chlorophyll content, malondialdehyde content, soluble sugar content, and stomata movement, demonstrated that YIL53 exhibited the characteristics associated with ABA sensitivity. Genotypic analysis revealed that YIL53 harbored one QTL related to ABA sensitivity, qASS1-2, which was located on chromosome 1 within one introgressed segment derived from the Yuanjiang common wild rice. Furthermore, the qASS1-2 was finally narrowed down to a 441-kb region between simple sequence repeats （SSR） marker RM212 and single nucleotide polymorphism （SNP） marker M3 using the segregation population derived from the cross between Teqing and YIL53, and three candidate genes associated with ABA sensitivity were identified using a strategy combined gene expression analysis with QTL mapping. Identification of the QTLs related to ABA sensitivity and characterization of the ABA sensitive line YIL53 would provide a helpful basis for isolating novel genes related to ABA sensitivity.

关键词： wild rice introgression lines ABA sensitivity quantitative trait locus candidate gene

The Taxonomy and the SEM Observation on Tubercles on Lemma of Yihuang wild rice

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Agricultural Sciences in China 2006年第7期5卷 491-497页

作者： HE Xiao-peng HE Hao-hua PENG Xiao-song FU Jun-ru LIU Yi-bai WU Qiang HUA Yu-jian XU Bo-gan WANG Xiang-kun College of Agronomy Jiangxi Agricultural University/Key Laboratory of Crop Physiology Ecology and Genetic Breeding of Jiangxi Province Nanchang 330045 P.R.China Fuzhou Agricultural Research Institute Fuzhou 344000 P.R.China Forest Workstation of Zhongfan Town of Yihuang County in Jiangxi Province Yihuang 344400 P.R.China College of Agronomy and Biotechnology China Agricultural University Beijing 100094 P.R.China

To distinguish the taxonomy of Yihuang wild rice found in Yihuang County, Jiangxi Province, China in 1999, the botanical characteristics of Yihuang wild rice were retrieved by genus, and species; at the same time, the tubercle characters on lemma in Yihuang wild rice, O. rufipogon, 0. officinalis, 0. meyeriana, and O. granulata, were also observed by scanning electron microscopy. The retrieval result by genus showed that Yihuang wild rice is Leersia Soland. Ex Swartz., not Oryza L., Hygroryza Nees and Chikusichloa Koidz. The retrieval result by species showed that Yihuang wild rice is L. sayanuka Ohwi, not L. hexandra Swartz., L. japonica （Makino） Honda and L. oryzoides （L.） Swartz. The results of the SEM observation on tubercles on lemma showed that the tubercle characters on lemma of Yihuang wild rice belongs to ＂inlaid- silica-peak＂ type, which is different from the three types of wild rice existing in China, O. rufipogon, O. officinalis, O. Meyeriana, and also O. granulata, but is similar to L. tisseranti, thereby gives a proof of the above retrieval results. It could be concluded that Yihuang wild rice does not belong to Oryza L., but to Leersia sayanuka Ohwi of Leersia Soland. Ex Swartz.

关键词： Yihuang wild rice taxonomy tubercle characters on lemma wild rice Leersia L. sayanuka Ohwi

Cloning and Sequence Analysis of Disease Resistance Gene Analogues from Three wild rice Species in Yunnan

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Agricultural Sciences in China 2003年第3期2卷 265-272页

作者： LIUJ－i－mei YANGMing－zhi 等 BiotechnologyResearchInstitute YunnanAcademyofAgriculturalSciencesKunming650223P.R.China BiotechnologyDepartment YunnanUniversityKunming650091P.R.China

Two sets of degenerate oligonucleotide primers were designed according to amino acid conserved regions of reported plant disease resistance genes which encode proteins that contain nucleotide-binding site and leucine-rich repeats(NBS-LRR), and the plant disease resistance genes which encode serine/threonine protein kinase(STK). By polymerase chain reaction(PCR), disease resistance gene analogues have been amplified from three wild rice species in Yunnan Province, China. The DIN A fragments from amplification have been cloned into the pGEM-T vector respectively. Sequencing of the DNA fragments indicated that 7 classes, 2 classes and 6 classes NBS-LRR disease resistance gene analogues from Oryza rufipogon Griff. , Oryza officinalis Wall. , and Oryza meyeriana Baill. were obtained respectively. The two representative fragments of TO12 from Oryza officinalis Wall, and TR19 from Oryza rufipogon Griff, belong to the same class and homology of their sequences are 100%. The result shows that the sequences of the same class disease resistance gene analogues have no difference among different species of wild rice. 5 classes STK disease resistance gene analogues were also obtained among which 4 classes from Oryza rufipogon Griff. , 1 class from Oryza officinalis Wall. By comparison analysis of amino acid sequences. we found that the obtained disease resistance gene analogues have very low identity(low to 25%) with the reported disease resistance gene L6, N, Bs2, Prf, Pto, Lr10 and Xa21 etc. The finding suggests that the obtained disease resistance gene analogues are analogues of putative disease resistance genes that have not been isolated so far.

关键词： wild rice Disease-resistance gene Nucleotide-binding site ( NBS) Leucine-rich repeat (LRR) Serine/threonine protein kinase(STK) Analogues

Discovery and Significance of the Grain of wild rice in Ancient-Woods Layer in Zhujiajian Island of Zhejiang Province, China

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rice science 2004年第3期11卷 147-149页

作者： SHENXian-sheng LIShu-mei YANGJie-pin SUNHao SchoolofLifeSciences UniversityofScienceandTechnologyofChinaHefei230027China

A large number of plant remains were discovered in the ancient-woods layer of Zhujiajian Island, Zhejiang Province. There were some thick trunks, complete laminas, fruit, seeds and so on. According to radiocarbon tests conducted for plant remains, the ancient-woods layer has been dated back to about 8750 - 6200 years, and the vegetation was a subtropical evergreen and deciduous broad-leaved mixed forests on the island in the past. In the middle of the ancient-woods layer, two grains of wild rice were explored accidentally, which are Oryza rufipogon, along with the fruit and seeds of some water plants, such as Ceratophyllum demersum, C. oryzetorum, Euryale ferox, Trapa incisa var. quadricaudata , Scirpus yagara and so on. There might be marshy soil and a pond in ancient forest vegetation from where the grains of wild rice and hydrophytic fruit were found. It is of tremendous importance to study the origin of wild rice in China.

关键词： ancient-woods layer wild rice agricultural archaeology

Improvement of wild rice Oryza Longistaminata through Mutation Induction

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Journal of Food Science and Engineering 2016年第2期6卷 82-89页

作者： Fousseyni Cisse Medoune Papa Khouma Institut d 'Economie Rurale (IER) Centre Regional de la Recherche Agronomique (CRRA) Sikasso BP. 16 Mall

Influence of a mutation to improve the undesirable traits （shattering, red caryopsis etc.） of wild rice O. longistaminata while preserving its useful genes by radiation 20 Kr gamma rays from 60Co was studied. The mutants issued this irradiation were crossed with the interspecific variety SIK385-b-42-28-28 （O. glaberrima x O. sativa）. Irradiation followed by crossing with interspecific variety generated a large genetic variability, in the subsequent generations, in plant height, maturity, non-shattering grain, kernel colour, spikelets fertility, panicle length, and grain size. This has resulted in identification of promising mutants which possess all the traits of cultivated rice O. sativa （white kernel, non-shattering grain, secondary branchies etc.）. During 2012 rainy season, nineteen selected mutants from M5 and M7 generations were evaluated for yield potential in replicated trials at Longorola station.

关键词： wild rice Oryza longistaminata mutagenesis mutants.

Research Progress on the Protection of wild rice Resources in China

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Agricultural Science & Technology 2010年第2期11卷 95-97页

作者：张金伟谢建坤万勇江西师范大学生命科学学院江西南昌330022 江西省农业科学院水稻研究所江西南昌330200

[Objective] The research aimed to summarize the research progresses on the protection of wild rice resources in China in recent 20 years.[Method] The protection effects of wild rice by using the methods of in situ protection,ectopic protection,the combination of in situ protection and ectopic protection were expounds,the research progresses on the protection of wild rice resources at present were summarized.[Result] Some scholars thought that in situ protection was an effective way for the protection of wil...

关键词： wild rice In situ protection Ectopic protection

Discovery and Utilization of Small Brown Planthopper Resistance Gene in wild rice

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Discovery and Utilization of Small Brown Planthopper Resista...

Fine mapping of the qLOP2 and qPSR2-1 loci associated with cold tolerance of wild rice seedlings

中国植物病理学会2012年学术年会

作者： ZHANG Wei-Lin YAN Cheng-Qi CHEN Jian-Ping (Institute of Virology and Biotechnology MO A and Zhejiang Provincial Key Laboratory for Plant Virology,Zhejiang academy of Agricultural Sciences)

＜正＞rice（Oryza sativa L.） is a primary staple food for more than 50%of the world population. Insect pests are major biotic constraints in rice production and *** small brown planthopper -SBPH（Laodelphax striatellus Fallen） is an economically important pest in *** not only causes direct damage by sucking plant sap,but also transmits several viral diseases such as rice stripe virus （RSV） and rice black-streaked dwarf virus,which often cause major yield losses. Protection against the SBPH greatly depended on insecticides,which has brought about enhanced resistance of SBPH to chemicals,environmental pollution and natural enemy death and in turn resulted in the pest ***-plant resistance has been recognized as one of the most economic and effective measures in controlling the SBPH and RSV because of prevention of transmission of *** to date, some resistant varieties were identified and 31 SBPH-resistance genes were mapped on the chromosome. Not the same germplasm resources for resistance to the SBPH as that previously reported,discovery and utilization of the SBPH-resistance gene in wild rice was performed by our *** rice species possess the nature resistance to the *** using asymmetric somatic hybridization with wild rice as the donor species and ***（02428） as the recipient species,from the progeny lines,we obtained Pf9279-4,which confers high resistance to the *** resistance heredity and breeding for resistance varieties is *** some resistant varieties were identified and 31 SBPH-resistance genes were mapped on the chromosome,up to date,none of resistance genes was cloned,so screening and cloning the resistant genes from the wild rice connected with breeding are nice pathway for rice production and security.

关键词： small brown planthopper wild rice resistant genes

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Fine mapping of the qLOP2 and qPSR2-1 loci associated with c...