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Population Improvement of Resistance to late blight in Tetraploid Potato:A Case Study in Combination with AFLP Marker Assisted Background Selection

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Agricultural Sciences in China 2011年第8期10卷 1177-1187页

作者： YAO Chun-guang SONG Bo-tao LIU Jun WU Cheng-jin CHENG Qun LI Da-chun XIE Cong-hua Key Laboratory of Horticultural Plant Biology Ministry of Education/National Center for Vegetable Improvement （Central China）/Potato Engineering and Technology Research Center of Hubei Province/Huazhong Agricultural UniversityWuhan 430070P.R.China Southern Potato Research Center of China/Enshi Academy of Agricultural Sciences Enshi 445000P.R.China

Cultivated potato with high level of horizontal resistance against late blight is one of the most important goals of potato *** recurrent selection has been adopted to increase the level of potato horizontal resistance and a B3C1 population without R1-R11 dominant genes has been released by the International Potato Center at the short-day condition of *** present research was carried out to further improve the resistance and the agronomic traits of B3C1 population under long-day condition of Hubei,China,with maximized retention of its genetic ***-seven individual clones of B3C1 were used to generate population B3C2 by in-population crossing with the bulk pollens aiming to elevate the frequency of late blight resistance genotypes and to improve the adaptation to local long-day *** late blight resistance and the main agronomic traits including the maturity,the plant characters and the tuber traits were evaluated for the foreground selection in three years,by which 130 pedigrees were maintained as the basic population of B3C2 for further selection.A total of 312 polymorphic loci detected by 9 AFLP marker combinations were used to monitor the genetic diversity of the populations for the background *** B3C2 population of 51 clones was finally selected,of which the frequency of resistant genotypes increased by 23.8% points and the genetic diversity was maintained by about 96% as referred to *** results strongly suggested that combination of the foreground selection for target traits and the background selection for the genetic diversity is an efficient strategy in the recurrent selection of tetraploid potato to improve quantitative traits.

关键词： potato recurrent selection late blight horizontal resistance genetic diversity

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Kinetic models of peroxidase activity in potato leaves infected with late blight based on hyperspectral data

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International Journal of Agricultural and Biological Engineering 2019年第2期12卷 160-165页

作者： Qinyu Li Yaohua Hu College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100China Key Laboratory of Agricultural Internet of Things Ministry of AgricultureYangling 712100China Shaanxi Key Laboratory of Agricultural Information Perception and Intelligent Service Yangling 712100China

Potato late blight,which is caused by Phytophthorainfestans(Mont.)de Bary,is a worldwide devastating disease for *** decreased yields of potato and caused unpredictable losses all over the *** simple statistical methods and forecasting models have been developed to predict and manage potato late ***,there is a rising need to develop prediction models reflecting peroxidase(POD)activity,which is an important health index that varies with infection and correlated with stress resistance in ***,the aim of this research was to develop kinetic models to predict POD ***-induced changes in potato leaves stored in an artificial climate chest at 25°C were analyzed using *** prediction models were developed by using linear partial least squares(PLS)and nonlinear support vector machine(SVM)methods based on the full spectrum and effective *** effective wavelengths were selected by the successive projection algorithm(SPA).In this study,the prediction model developed by means of SPA-SVM method obtained the best performance,with a Rp(correlation coefficient of prediction)value of 0.923 and a RMSEp(root mean square error of prediction)value of ***-order kinetics models according to the prediction model were developed,and late blight disease can be predicted using this *** study provided a theoretical basis for the prediction of latencies of late blight.

关键词： POD(peroxidase)activity kinetic model potato leaves late blight hyperspectral data latency prediction

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Inheritance Analysis and Identification of SSR Markers Linked to late blight Resistant Gene in Tomato

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Agricultural Sciences in China 2006年第7期5卷 517-521页

作者： ZHU Hai-shan WU Tao ZHANG Zhen-xian Department of Vegetable College of Agronomy and Bio-Technology China Agricultural University Beijing 100094 P.R.China Department of Horticulture College of Landscape and Horticulture Yunnan Agricultural University Kunming 650201 P.R.China

late blight caused by Phytophthora infestans is the most serious disease of tomato production in China. Studies on the genetics of resistance and identification of molecular markers are very useful for breeding late blight resistant varieties. The objective of this paper was to study the inheritance of late blight resistance and identify simple sequence repeat （SSR） markers associated with resistance allele in tomato （Lycopersicon esculentum Mill）. The results came from an F2 progeny of 241 plants derived from a cross between 5~ inbred line that is susceptible to late blight and a resistant accession CLN2037E. The late blight responses of F2 plants were tested by artificially inoculation of detached-leaflets in plate and natural infection assayed under greenhouse conditions. Both methods showed that the resistance is dominant and inherited as monogenic trait. Genetic mapping and linkage analysis showed that the late blight resistance gene Ph-ROL was located on chromosome 9 with a genetic distance of 5.7 cM to the SSR marker TOM236.

关键词： disease resistance late blight Phytophthora infestans SSR tomato

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A Host KH RNA-Binding Protein Is a Susceptibility Factor Targeted by an RXLR Effector to Promote late blight Disease

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Molecular Plant 2015年第9期8卷 1385-1395页

作者： Xiaodan Wang Petra Boevink Hazel McLellan Miles Armstrong Tatyana Bukh-arova Zhiwei Qin Paul R.J. Birch Horticultural College Northeast Agricultural University No. 59 Mucai Road Harbin 150030 China Cell and Molecular Sciences James Hutton Institute Errol Road Invergowrie Dundee DD2 5DA UK Division of Plant Sciences College of Ufe Sciences University of Dundee (at JHI) Errol Road Invergowrie Dundee DD2 5DA UK Virus-free Seedling Research Institute of Heilongjiang Academy of Agricultural Sciences No. 368 Xuefu Road Harbin 150086 China These authors contributed equatly to this article.

Plant pathogens deliver effector proteins that alter host processes to create an environment conducive to colonization. Attention has focused on identifying the targets of effectors and how their manipulation facil- itates disease. RXLR effector Pi04089 from the potato blight pathogen Phytophthora infestans accumu- lates in the host nucleus and enhances colonization when transiently expressed in planta. Its nuclear local- ization is required for enhanced P. infestans colonization. Pi04089 interacts in yeast and in planta with a putative potato K-homology （KH） RNA-binding protein, StKRBPI. Co-localization of Pi04089 and StKRBP1, and bimolecular fluorescence complementation between them, indicate they associate at nuclear speckles. StKRBP1 protein levels increased when it was co-expressed with Pi04089. Indeed, such accumu- lation of StKRBP1 was observed also on the first day of leaf colonization by the pathogen. Remarkably, overexpression of StKRBP1 significantly enhances P. infestans infection. Mutation of the nucleotide- binding motif GxxG to GDDG in all three KH domains of StKRBP1 abolishes its interaction with Pi04089, its localization to nuclear speckles, and its increased accumulation when co-expressed with the effector. Moreover, the mutant StKRBP1 protein no longer enhances leaf colonization by P. infestans, implying that nucleotide binding is likely required for this activity. We thus argue that StKRBP1 can be regarded as a sus- ceptibility factor, as its activity is beneficial to the pathogen.

关键词： effector-triggered susceptibility oomycete plant disease late blight

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Obtaining New Potato Cultivars with late blight Resistance and Adapted to Climate Change Using Participatory Varietal Selection

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Journal of Agricultural Science and Technology(B) 2020年第1期10卷 17-27页

作者： Noemi Zúniga Manuel Gastelo Carolina Bastos Jhercy Reyes Edson Alania Evelin Ninalaya National Root and Tuberous Program National Institute of Agricultural InnovationHuancayo 1200Perú Genetics Genomic and Crop Improvement Science DivisionInternational Potato Center-CIPP.O.Box 1558Lima12Peru Faculty of Agricultural Sciences Professional Academic School of Agronomic EngineeringNational University Hermilio ValdizanHuánuco 10003Perú Agronomy Faculty National University of the Center of PeruHuancayo 12006Perú

The potato crop in Peru is the main income and food source for the smallholder of the highland grower of the Peruvian *** urban population,it represents one of the main components of the food basket and for commercial *** is the main brokerage product considering its volume and *** facilitate the adoption and diffusion of new potato cultivars after its release,adequate methodologies are necessary to apply during the process of evaluation and *** of these methodologies is called participatory varietal selection(PVS).The objective of this study was to identify new potato cultivars and/or genotypes with resistance or tolerance to adverse effects of climate change applying PVS,in order to obtain new varieties with acceptable economic *** this way potato growers of the Peruvian highland Andes should benefit through the improvement of their economic status,food security and overall life *** 2016-2017,three potato clones(CIP393079.4,CIP387096.2 and CIP396034.268)and two commercial varieties(Unica,Canchan)were evaluated at eight Peruvian locations in three regions(Huánuco,Junín and Huancavelica).Data were analyzed using a randomized complete block design,with three *** criteria for selection were late blight resistance,abundant foliage,drought tolerance,yield and uniform and healthy *** all three regions the three best clones selected were CIP396034.268,CIP393079.4 and CIP387096.2,ranking in first,second and third place,*** and women selected the same clones,but in a different *** cultivars ranked 4th and ***,local growers selected Canchan,CIP387096.2 and CIP393079.4 based on appearance,texture and taste *** last two clones(CIP387096.2 and CIP393079.4)should be considered for a future release.

关键词： Potato late blight resistance climate change participatory varietal selection

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Developmental Differences, Yield and late blight （Phytophthora infestans）Infection of Potato Plants Grown under Organic and Conventional Systems

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Journal of Agricultural Science and Technology(A) 2013年第4期3卷 281-289页

作者： Krystyna Zarzyfiska Marianna Szutkowska Plant Breeding and Acclimatization Institute-IHAR-PIB Potato Agronomy Department Jadwisin' 05-140 Serock Poland

In the years 2008-2010, an experiment was conducted Phytophthora infestans under organic and conventional production on four potato cultivars differing in maturity and resistance to systems. During the growing season, plant growth was evaluated by measuring plant height, stem number, leaf and stem biomass and leaf area index （LAI）. Photosynthetic active radiation （PAR） absorption and leaf chlorophyll content were also measured. The rate of late blight development, tuber yield, tuber size, and harvest index was assessed. There were significant differences between the two production systems in the most studied parameters. Plants growing in the organic system were characterized by reduced plant development compared to plants growing in the conventional system. As a result of lower plant growth, tuber yield was reduced by 22% and tuber size was smaller. Harvest index did not differ significantly between production systems. A positive effect of the reduced development of aboveground plant parts in the organic system was later appearance of the first symptoms of late blight and slower spread the disease.

关键词： Potato organic production conventional production aboveground biomass tuber yield late blight

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Potato late blight Control Using R-Gene Polyculture by GMO

Potato Late Blight Control Using R-Gene Polyculture by GMO

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2011 International Conference on Energy and Environment(ICEE 2011)

作者： Cuihua Xin Na Li Jiangbo Guo School of mathematics physics and biological engineering Inner Mongolia University of science and technology

Potato（Solanum tuberosum L.） is the fourth most important crop in the world and one of the top seven important crops in china. late blight is a devastating disease of potato caused by Phytophthora infestans（Mont.） de Bary, which was the reason of the Great Irish Famine in 1845. Today, late blight remains the No. 1 threat to potato production. In previous research, it proved that it was difficult to control potato late blight just because P. infestans ranked the highest risk in the evolutionary potential and it could easily mutate its Avr genes and thus overcome potato plants carrying corresponding R genes. So, one of the promising solutions for late blight control is to release several R genes simultaneously and to artificially create a resistance polymorphism in the field, such as the strategy so called R gene polyculture. In the past years, scientists gained a great success in cloning R genes conferring late blight resistance, providing a starting point to create R gene polyculture by means of cisgenic technology.

关键词： potato late blight R gene polyculture

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Asiablight Is a Pan-Asian Network Focused on Uncovering *** Population Dynamics and Improving the Management of the late blight Threat in Asia

AsiaBlight Is a Pan-Asian Network Focused on Uncovering *** ...

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2019年中国马铃薯大会

作者： Christelle Lasserre Alberto Maurer International Potato Center(CIP) CIP-China Center for Asia Pacific(CCCAP)

Potato is a staple food that is crucial to fight malnutrition and combat severe rural poverty in *** blight(LB)is a major constraint to production throughout the *** results in lower potato yields,higher production costs and intensive use of *** Asia has numerous researchers working on different aspects of LB,their efforts lack ***,currently there is no overall picture of the Asian Phytophthora *** population,which means that information regarding its most effective control measures is *** overcome these problems,Asiablight,a pan-Asian late blight scientific community and network,was initiated in *** initially focused on establishing a coarse-scale map of *** in the *** study,performed by David Cook(James Hutton Institute)and Louise Cook(Queen’s University),has shown that the aggressive genotype 132(Blue 13),already reported from China and India,is widespread across continental Asia and is present in Georgia,Nepal,Bangladesh and *** contrast,this same genotype was not detected in the *** populations of the islands of Asia which were *** these islands(Japan,Taiwan,Indonesia and the Philippines),distinct and disparate *** populations were *** in 2018,the CIP-China Center for Asia Pacific(CCCAP)has focused on implementing a self-sustaining Asiablight *** September 2018,CCCAP has had many discussions with LB stakeholders in different Asian countries,to better understand how the new Asiablight network can respond to the expectations of the *** main goals for Asiablight are to train and build capacity among LB stakeholders,increase understanding of LB,and improve LB management through information,enhanced communication and collaboration,more coordinated research,and the introduction of new LB management *** a network,Asiablight strives to involve scientists,farmers,the agrochemical industry,government officials

关键词： late blight Asiablight Phytophtora infestans plant pathogen fungicide

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The Ubiquitin E3 Ligase PUB17 Positively Regulates Immunity by Targeting a Negative Regulator, KH17, for Degradation

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Plant Communications 2020年第4期1卷 75-86页

作者： Hazel McLellan Kai Chen Qin He Xintong Wu Petra C.Boevink Zhendong Tian Paul R.J.Birch Division of Plant Science School of Life ScienceUniversity of Dundee(at JHI)InvergowrieDundee DD25DAUK Key Laboratory of Horticultural Plant Biology(HZAU) Ministry of EducationKey Laboratory of Potato Biology and Biotechnology(HZAU)Ministry of Agriculture and Rural AffairsHuazhong Agricultural UniversityWuhanHubei 430070China Cell and Molecular Science James Hutton InstituteInvergowrieDundee DD25DAUK

Ubiquitination is a post-translational modification that regulates many processes in *** ubiquitin E3 ligases act as either positive or negative regulators of immunity by promoting the degradation of different ***17 is an E3 ligase that has previously been shown to positively regulate immunity to bacteria,fungi and oomycetes,including the late blight pathogen Phytophthora *** of StPUB17 promotes pathogen colonization and attenuates Cf4/avr4 cell *** yeast-2-hybrid and co-immunoprecipitation we identified the putative K-homology(KH)RNA-binding protein(RBP),StKH17,as a candidate substrate for degradation by ***17 acts as a negative regulator of immunity that promotes *** infection and suppresses specific immune pathways.A KH RBP domain mutant of StKH17(StKH17GDDG)is no longer able to negatively regulate immunity,indicating that RNA binding is likely required for StKH17 *** StPUB17 is a known target of the ubiquitin E3 ligase,StPOB1,we reveal an additional step in an E3 ligase regulatory cascade that controls plant defense.

关键词： oomycete plant disease late blight E3 ligase KH RNA-binding protein

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Identification and mapping of Rpi-blb4 in diploid wild potato species Solanum bulbocastanum

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The Crop Journal 2023年第6期11卷 1828-1835页

作者： Jie Li Amanpreet Kaur Brian Harrower Miles Armstrong Daolong Dou Xiaodan Wang Ingo Hein Department of Plant Pathology and MOA Key Lab of Pest Monitoring and Green Management College of Plant ProtectionChina Agricultural UniversityBeijing 100193China The James Hutton Institute InvergowrieDundee DD25DAUK University of Dundee Dundee DD14HNUK Crop Research Centre TeagascOakParkCarlow R93 XE12Ireland College of Plant Protection Academy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095JiangsuChina

More than 170 years after causing the potato famine in Ireland,late blight is still considered one of the most devastating crop *** potato breeding efforts depend on natural sources of resistance to protect crops from the rapidly evolving late blight pathogen,Phytophthora *** have identified and mapped a novel broad-spectrum disease resistance gene effective against *** from the wild,diploid potato species Solanum *** resistance gene enrichment sequencing(dRenSeq)was used to confirm the uniqueness of the identified *** and GenSeq-based mapping of the resistance,referred to as Rpi-blb4,alongside recombinant screening,positioned the locus responsible for the resistance to potato chromosome *** interval spans approximately 2.3 Mb and corresponds to the DM reference genome positions of 11.25 and 13.56 Mb.

关键词： Renseq Disease resistance late blight Solanum bulbocastanum

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