检索结果-南通市图书馆

plant genomic DNA methylation in response to stresses: Potential applications and challenges in plant breeding

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2009年第9期19卷 1037-1045页

作者： Hai Peng, Jing Zhang * Laboratory of Germplasm and Genetics, College of Life Science, Jianghan University, Wuhan 430056, China Laboratory of Germplasm and Genetics College of Life Science Jianghan University Wuhan 430056 China

The plant genome can respond rapidly and dynamically to stress in a manner that overcomes the restrictions of a highly stable DNA sequence. Abiotic stresses such as chilling, planting density, rubbing, cutting, and successive rounds of subculture generally decrease the levels of DNA methylation. The opposite effect is seen for salt stress, and the effects of heavy-metal stress are species specific. Biotic stres-ses such as pathogenic infection can lead to two contrasting effects on the levels of methylation in plants: hypermethylation on the genome-wide level and hypomethylation of resistance-related genes. Both phenomena may contribute to the adaptation of plants to stress. Although heritable methylation patterns and phenotypic variations that arise in response to stress are of potential value for plant breeding, their exploitation presents great challenges.

关键词： DNA methylation plant breeding Stress

Gene editing: an instrument for practical application of gene biology to plant breeding

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第6期21卷 460-473页

作者： Yuan-yuan TAN Hao DU Xia WU Yan-hua LIU Meng JIANG Shi-yong SONG Liang WU Qing-yao SHU National Key Laboratory of Rice Biology Institute of Crop SciencesZhejiang UniversityHangzhou 310058China The Rural Development Academy Zhejiang UniversityHangzhou 310058China

plant breeding is well recognized as one of the most important means to meet food security challenges caused by the ever-increasing world population. During the past three decades, plant breeding has been empowered by both new knowledge on trait development and regulation(e.g., functional genomics) and new technologies(e.g., biotechnologies and phenomics). Gene editing, particularly by clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein(Cas) and its variants, has become a powerful technology in plant research and may become a game-changer in plant breeding. Traits are conferred by coding and non-coding genes. From this perspective, we propose different editing strategies for these two types of genes. The activity of an encoded enzyme and its quantity are regulated at transcriptional and post-transcriptional, as well as translational and post-translational, levels. Different strategies are proposed to intervene to generate gene functional variations and consequently phenotype changes. For non-coding genes, trait modification could be achieved by regulating transcription of their own or target genes via gene editing. Also included is a scheme of protoplast editing to make gene editing more applicable in plant breeding. In summary, this review provides breeders with a host of options to translate gene biology into practical breeding strategies, i.e., to use gene editing as a mechanism to commercialize gene biology in plant breeding.

关键词： Gene editing Expression regulation Novel allele Trait development plant breeding

《plant breeding》杂志:展示植物育种成就的平台

在线全文

学校读者我要写书评

暂无评论

分子植物育种 2006年第S1期 35-35页

作者：张淑玲海南省热带农业资源开发利用研究所

Cultivating potential:Harnessing plant stem cells for agricultural crop improvement

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular plant 2024年第1期17卷 50-74页

作者： Penelope Lindsay Kyle W.Swentowsky David Jackson Cold Spring Harbor Laboratory Cold Spring HarborNY 11724USA National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanHubei430070China

Meristems are stem cell-containing structures that produce all plant organs and are therefore important targets for crop *** regulators control the balance and rate of cell divisions within the *** these regulators impacts meristem architecture and,as a consequence,plant *** this review,we discuss genes involved in regulating the shoot apical meristem,inflorescence meristem,axillary meristem,root apical meristem,and vascular cambium in *** highlight several examples showing how crop breeders have manipulated developmental regulators to modify meristem growth and alter crop traits such as inflorescence size and branching *** transformation techniques are another innovation related to plant meristem research because they make crop genome engineering *** discuss recent advances on plant transformation made possible by studying genes controlling meristem ***,we conclude with discussions about how meristem research can contribute to crop improvement in the coming decades.

关键词： meristem crop improvement plant transformation plant breeding crop yield gene editing

Enemies atpeace:Recentprogressin Agrobacterium-mediated cereal transformation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2024年第2期12卷 321-329页

作者： Shaoshuai Liu Ke Wang Shuaifeng Geng Moammar Hossain Xingguo Ye Aili Li Long Mao Karl-Heinz Kogel State Key Laboratory of Crop Gene Resources and breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Institute of Phytopathology Centre for BioSystemsLand Use and NutritionJustus Liebig UniversityHeinrich Buff-Ring 26-32D-35392GiessenGermany

Agrobacterium tumefaciens mediated plant transformation is a versatile tool for plant genetic engineering following its discovery nearly half a century *** modifications were made in its application to increase efficiency,especially in the recalcitrant major cereals *** breakthroughs in transformation efficiency continue its role as a mainstream technique in CRISPR/Cas-based genome editing and gene *** modifications led to higher transformation frequency and lower but more stable transgene copies with the capability to revolutionize modern *** this review,we provide a brief overview of the history of Agrobacterium-mediated plant transformation and focus on the most recent progress to improve the system in both the Agrobacterium and the host recipient.A promising future for transformation in biotechnology and agriculture is predicted.

关键词： Agrobacterium tumefaciens Cereal species Genome editing Genetic engineering plant breeding

Applications of cold atmospheric plasmas(CAPs)in agriculture:a brief review and the novel development of a radio-frequency CAP jet generator for plant mutation

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2022年第9期24卷 1-14页

作者： Heping LI Jing LI Xiting ZHAO Liyan WANG Chuan FANG Nan SU Chong ZHANG Yan XU Meng LV Mingjun LI Xinhui XING Department of Engineering Physics Tsinghua UniversityBeijing 100084People’s Republic of China College of Life Sciences Henan Normal UniversityXinxiang 453007People’s Republic of China Biobreeding Research Center Wuxi Research Institute of Applied TechnologiesTsinghua UniversityWuxi 214072People’s Republic of China MOE Key Laboratory of Industrial Biocatalysis Department of Chemical EngineeringTsinghua UniversityBeijing 100084People’s Republic of China Center for Systems and Synthetic Biology Tsinghua UniversityBeijing 100084People’s Republic of China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolShenzhen 518055People’s Republic of China

Cold atmospheric plasmas(CAPs)have shown great applicability in *** kinds of CAP sources have been studied in agricultural applications to promote plant growth and cure plant *** briefly review the state-of-the-art stimulating effects of atmospheric-pressure dielectricbarrier-discharge(AP-DBD)plasmas,after the direct or indirect treatment of plants for growth promotion and disease *** then discuss the special demands on the characteristics of the CAP sources for their applications in plant mutation *** atmospheric and room temperature plasma(ARTP)jet generator with a large plasma irradiation area,a high enough concentration of chemically reactive species and a low gas temperature is designed for direct plant *** measurements of the electrical,thermal and optical features of the ARTP generator are ***,an ARTP-P(ARTP for plant mutagenesis)mutation breeding machine is developed,and a typical case of plant mutation breeding by the ARTP-P mutation machine is presented using Coreopsis tinctoria *** and agricultural experiments show that the newly-developed ARTP-P mutation breeding machine with a large irradiation area can generate uniform CAP jets with high concentrations of chemically reactive species and mild gas temperatures,and have signiflcant mutagenesis effects on the Coreopsis tinctoria *** ARTP-P mutation breeding machine may provide a platform for systematic studies on mutation mechanisms and results for various plant seeds under different operating conditions in future research.

关键词： cold atmospheric plasma radio-frequency glow discharge mutation plant breeding ARTP agricultural application

breeding Major Cereal Grains through the Lens o~ ~iutrition Sensitivity

在线全文

学校读者我要写书评

暂无评论

Molecular plant 2018年第1期11卷 23-30页

作者： Shu Yu Li Tian Department of plant Sciences University of California Davis Davis CA 95616 USA Shanghai Chenshan plant Science Research Center Chinese Academy of Sciences Shanghai 201602 China Shanghai Key Laboratory of plant Functional Genomics and Resources Shanghai Chenshan Botanical Garden Shanghai 201602 China

Cereal grains are the common food staples that collectively provide over 50% of dietary calories and proteins for the world＇s population. Although the Green Revolution has greatly increased the yield of commercial cereal crops, they often lack nutrients essential for human health in the edible tissues. In developing nutrition-sensitive agriculture, the nutritional quality of cereal grains has been a major target for improvement using breeding and biotechnology approaches. This review examines recent progress on biofortification of micronutrients （provitamin A and folates） and an essential amino acid （lysine） in three major cereal grains, wheat, rice, and maize, through plant breeding. In addition, how natural variations, induced mutations, and the advanced genome-editing technologies can be applied to improving the nutrient content and stability in these cereal grains are discussed. High-yield cereal crops pyramided with improved （micro）nutrient contents hold great promise to meet the increasing demand of nutritionally limited popula- tions and to contribute to achieving sustainable nutrition security.

关键词： cereal grains nutrition sensitive plant breeding provitamin A lysine folates

breeding against mycorrhizal symbiosis:Modern cotton (Gossypium hirsutum L.) varieties perform more poorly than older varieties except at very high phosphorus supply levels

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2023年第3期22卷 701-715页

作者： WANG Xin-xin ZHANG Min SHENG Jian-dong FENG Gu Thomas W.KUYPER College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193P.R.China State Key Laboratory of North China Crop Improvement and Regulation/Mountain Area Research Institute Hebei Agricultural UniversityBaoding 071001P.R.China College of Resource and Environmental Sciences Xinjiang Agricultural UniversityUrumqi 830052P.R.China Soil Biology Group Wageningen University&ResearchWageningen 6700AAThe Netherlands

Cotton (Gossypium hirsutum L.) is an importantfiber cash crop,but its root traits related to phosphorus (P) acquisition,including mycorrhizal root traits,are poorly *** cotton varieties bred in northwestern China that were released between 1950 and 2013 were grown in pots with or without one arbuscular mycorrhizal fungal (AMF) species(Funneliformis mosseae) at three P supply levels (0,50 and 300 mg P as KH_(2)PO_(4)kg^(-1)).Eleven root traits were measured and calculated after 7 wk of *** more recent accessions had smaller root diameters,acquired less P and produced less biomass,indicating an (inadvertent) varietal selection for thinner roots that provided less cortical space for AMF,which then increased the need for a high P fertilizer *** the two lower P levels,the mycorrhizal plants acquired more P and produced more biomass than non-mycorrhizal plants (3.2 vs.0.9 mg P per plant;1.8 vs.0.9 g biomass per plant at P_(0);14.5 vs.1.7 mg P per plant;and 4.7 vs.1.6 g biomass per plant at P_(50)).At the highest P level,the mycorrhizal plants acquired more P than non-mycorrhizal plants (18.8 vs.13.4 mg per P plant),but there was no difference in biomass (6.2 vs.6.3 g per plant).At the intermediate P level,root diameter was significantly positively correlated with shoot biomass,P concentration and the P content of mycorrhizal *** results of our study support the importance of the outsourcing model of P acquisition in the root economics space *** varietal selection in the last decades,resulting in thinner roots and a lower benefit from AMF,has led to a lower productivity of cotton varieties at moderate P supply (i.e.,when mycorrhizal,the average biomass of older varieties 5.0 g per plant *** of newer varieties 4.4 g per plant),indicating the need to rethink cotton breeding efforts in order to achieve high yields without very high P *** feasible way to solve the problem of inadvertent varietal selection for cotto

关键词： cotton varieties plant breeding arbuscular mycorrhizal fungi root economics space outsourcing phosphorus acquisition

Fine Mapping of qPAA8,a Gene Controlling Panicle Apical Development in Rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative plant Biology 2011年第9期53卷 710-718页

作者： Zhi-Jun Cheng Bi-Gang Mao Su-Wei Gao Ling Zhang Jiu-Lin Wang Cai-Lin Lei Xin Zhang Fu-Qing Wu Xiu-Ping Guo Jianmin Wan National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agriculture SciencesBeijing 100081China

In rice,one detrimental factor influencing single panicle yield is the frequent occurrence of panicle apical abortion（PAA） under unfavorable climatic *** now,no detailed genetic information has been available to avoid PAA in rice ***,we show that the occurrence of PAA is associated with the accumulation of excess hydrogen *** trait loci（QTLs） mapping for PAA in an F2 population derived from the cross of L-05261（PAA line） × IRAT129（non-PAA variety） identified seven QTLs over a logarithm of the odd（LOD） threshold of 2.5,explaining approximately 50.1% of phenotypic variance for PAA in *** of the QTLs with an increased effect from L-05261,were designated as qPAA3-1,qPAA3-2,qPAA4,qPAA5 and qPAA8,and accounted for 6.8%,5.9%,4.2%,13.0% and 12.2% of phenotypic variance,*** found that the PAA in the early heading plants was mainly controlled by ***,using the sub-populations specific for qPAA8 based on markerassisted selection,we further narrowed qPAA8 to a 37.6-kb interval delimited by markers RM22475 and *** results are beneficial for PAA gene clone.

关键词： RICE plant breeding plant gene mapping plant genetics plant development HYDROGEN peroxide LOGARITHMS ANALYSIS of variance