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CONSTANS alters the circadian clock in Arabidopsis thaliana

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Molecular plant 2024年第8期17卷 1204-1220页

作者： Pedro de los Reyes Gloria Serrano-Bueno Francisco J.Romero-Campero He Gao Jose M.Romero Federico Valverde plant Development Group-Institute for plant Biochemistry and Photosynthesis Consejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain Department of Computer Science and Artificial Intelligence Universidad de SevillaSevilleSpain Department of plant Developmental Biology Max Planck Institute for Plant Breeding ResearchCologneGermany Department of plant Biochemistry and Molecular Biology Universidad de SevillaSevilleSpain

plants are sessile organisms that have acquired highly plastic developmental strategies to adapt to the *** these processes,the floral transition is essential to ensure reproductive success and is finelyregulated by several internal andexternal genetic *** photoperiodic pathway,which controls plant response to day length,is one of the most important pathways controlling *** Arabidopsis photoperiodic flowering,CONSTANS(CO)is the central gene activating the expression of the florigen FLOWERING LOCUS T(FT)in the leaves at the end of a long *** circadian clock strongly regulates Co ***,to date,no evidence has been reported regarding a feedbackloop from the photoperiod pathway back to the circadian *** transcriptional networks,we have identified relevant network motifs regulating the interplay between the circadian clock and the photoperiod *** expression,chromatin immunoprecipitation experiments,and phenotypic analysis allowed us to elucidate the role of Co over the circadian *** with altered cO expression showed a different internal clock period,measured by daily leaf rhythmic *** showed that co upregulates the expression of key genes related to the circadian clock,such as CCA1,LHY,PRR5,and Gl,at the end of a long day by bindingto specific sites on their ***,a high numberof PRR5-repressed target genes are upregulated by CO,and this could explain the phase transition promoted by *** CO-PRR5 complex interacts with the bZiP transcriptionfactor HY5andhelps to localize the complex in the promoters of clock *** together,our results indicate that there may be a feedback loop in which co communicates back to the circadian clock,providing seasonal information to the circadian system.

关键词： CONSTANS circadian clock photoperiod

The super-pangenome of Populus unveils genomic facets for its adaptation and diversification in widespread forest trees

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Molecular plant 2024年第5期17卷 725-746页

作者： Tingting Shi Xinxin Zhang Yukang Hou Changfu Jia Xuming Dan Yulin Zhang Yuanzhong Jiang Qiang Lai Jiajun Feng Jianju Feng Tao Ma Jiali Wu Shuyu Liu Lei Zhang Zhiqin Long Liyang Chen Nathaniel R.Street Par K.Ingvarsson Jianquan Liu Tongming Yin Jing Wang Key Laboratory for Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduSichuanChina College of Horticulture and Forestry Tarim UniversityAlar 843300China Umea plant Science Centre Department of Plant PhysiologyUmea UniversityUmeaVasterbottenSweden Linnean Centre for plant Biology Department of Plant BiologyUppsala BioCenterSwedish University of Agricultural SciencesUppsalaSweden The Key Laboratory of Tree Genetics and Biotechnology of Jiangsu Province and Education Department of China Nanjing Forestry UniversityNanjingJiangsuChina

Understanding the underlying mechanisms and links between genome evolution and adaptive innovations stands as a key goal in evolutionary ***,among the world’s most widely distributed and cultivated trees,exhibit extensive phenotypic diversity and environmental *** this study,we present a genus-level super-pangenome comprising 19 Populus genomes,revealing the likely pivotal role of private genes in facilitating local environmental and climate *** the integration of pangenomes with transcriptomes,methylomes,and chromatin accessibility mapping,we unveil that the evolutionary trajectories of pangenes and duplicated genes are closely linked to local genomic landscapes of regulatory and epigenetic architectures,notably CG methylation in gene-body *** comparative genomic analyses have enabled the identification of 142202 structural variants across species that intersect with a significant number of genes and contribute substantially to both phenotypic and adaptive *** have experimentally validated a∼180-bp presence/absence variant affecting the expression of the CUC2 gene,crucial for leaf serration ***,we developed a user-friendly web-based tool encompassing the multi-omics resources associated with the Populus super-pangenome(http://***).Together,the present pioneering super-pangenome resource in forest trees not only aids in the advancement of breeding efforts of this globally important tree genus but also offers valuable insights into potential avenues for comprehending tree biology.

关键词： Populus pangenomes whole-genome duplication structural variation genome evolution

Herbicide resistance: Development of wheat production systems and current status of resistant weeds in wheat cropping systems

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The Crop Journal 2019年第6期7卷 750-760页

作者： Sridevi Nakka Mithila Jugulam Dallas Peterson Mohammad Asif heartland plant innovations ManhattanKS 66506USA Department of Agronomy Kansas State University2004 Throckmorton Plant Sciences CenterManhattanKS 66506USA

Herbicide resistance in crops has extended the scope of herbicide applications to control weeds. The introduction of herbicide resistant crops resulted in a major shift in the way that herbicides are used in many crops, but not necessarily increased the prevalence of herbicide use, especially in wheat. Wheat is one of the most widely grown crops in the world and currently only two major herbicide-resistant wheat groups have been commercialized to manage weeds in a cost-effective manner. However, sustainable wheat production is threatened by the expanding occurrence of herbicide-resistant weed populations with limited efforts to discover new herbicide molecules. Selective control of certain problematic weeds in wheat was impossible until development and introduction of the technologies, Clearfield and Co AXium Production Systems. However, the current limitations of reliance on specific herbicides and evolution of resistant weeds mandate precautions and considerations when using these systems to prevent the loss of existing herbicide resources and continue sustainable wheat production. The focus of this review is to provide an overview of natural pre-existing herbicide resistance and development of herbicide-resistant technologies in wheat. The mechanisms of resistance to herbicides in wheat as well as the weed populations in wheat cropping systems, and implications for weed management are discussed.

关键词： Clearfield Coaxium Cytochrome P450s GSTs Herbicide resistance Wheat production systems

Next Generation Nutrition: Genomic and Molecular Breeding innovations for Iron and Zinc Biofortification in Rice

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Rice science 2024年第5期31卷 526-544,I0029,I0030页

作者： Kunhikrishnan Hemalatha DHANYALAKSHMI Reshma MOHAN Sasmita BEHERA Uday Chand JHA Debashis MOHARANA Ahalya BEHERA Sini THOMAS Preman Rejitha SOUMYA Rameswar Prasad SAH Radha BEENA Department of plant Physiology College of AgriculturePadannakkadKerala Agricultural UniversityKerala 671314India Department of plant Physiology College of AgricultureVellayaniKerala Agricultural UniversityKerala 695522India Crop Improvement Division India Council of Agricultural Research-National Rice Research InstituteOdisha 7530006India Department of plant Breeding and Genetics Indian Institute of Pulse ResearchKanpur 208024India Department of plant Physiology College of AgricultureKumarakomKerala Agricultural UniversityKerala 686563India

Global efforts to address malnutrition and hidden hunger, particularly prevalent in low- and middle-income countries, have intensified, with a focus on enhancing the nutritional content of staple crops like rice. Despite serving as a staple for over half of the world's population, rice falls short in meeting daily nutritional requirements, especially for iron(Fe) and zinc(Zn). Genetic resources, such as wild rice species and specific rice varieties, offer promising avenues for enhancing Fe and Zn content. Additionally, molecular breeding approaches have identified key genes and loci associated with Fe and Zn accumulation in rice grains. This review explores the genetic resources and molecular mechanisms underlying Fe and Zn accumulation in rice grains. The functional genomics involved in Fe uptake, transport, and distribution in rice plants have revealed key genes such as OsFRO1, OsIRT1, and OsNAS3. Similarly, genes associated with Zn uptake and translocation, including OsZIP11 and OsNRAMP1, have been identified. Transgenic approaches, leveraging transporter gene families and genome editing technologies, offer promising avenues for enhancing Fe and Zn content in rice grains. Moreover, strategies for reducing phytic acid(PA) content, a known inhibitor of mineral bioavailability, have been explored, including the identification of low-PA mutants and natural variants. The integration of genomic information, including whole-genome resequencing and pan-genome analyses, provides valuable insights into the genetic basis of micronutrient traits and facilitates targeted breeding efforts. Functional genomics studies have elucidated the molecular mechanisms underlying Fe uptake and translocation in rice. Furthermore, transgenic and genome editing techniques have shown promise in enhancing Fe and Zn content in rice grains through the manipulation of key transporter genes. Overall, the integration of multi-omics approaches holds significant promise for addressing global malnutri

关键词： biofortification grain quality iron phytic acid rice zinc

Bringing CAM photosynthesis to the table:Paving the way for resilient and productive agricultural systems in a changing climate

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plant Communications 2024年第3期5卷 17-30页

作者： Noe´Perron Matias Kirst Sixue Chen plant Molecular and Cellular Biology Program University of FloridaGainesvilleFL 32608USA School of Forest Fisheries and Geomatics SciencesUniversity of FloridaGainesvilleFL 32603USA Department of Biology University of MississippiOxfordMS 38677-1848USA

Modern agricultural systems are directly threatened by global climate change and the resulting freshwater crisis.A considerable challenge in the coming years will be to develop crops that can cope with the conse-quences of declining freshwater resources and changing *** approach to meeting this chal-lenge may lie in our understanding of plant photosynthetic adaptations and water use *** from various taxa have evolved crassulacean acid metabolism(CAM),a water-conserving adaptation of photosynthetic carbon dioxidexation that enables plants to thrive under semi-arid or seasonally drought-prone *** past research on CAM has led to a better understanding of the inner workings of plant resilience and adaptation to stress,successful introduction of this pathway into C3 or C4 plants has not been *** recent revolution in molecular,systems,and synthetic biology,as well as innovations in high-throughput data generation and mining,creates new opportunities to uncover the minimum genetic tool kit required to introduce CAM traits into drought-sensitive ***,we pro-pose four complementary research avenues to uncover this tool ***,genomes and computational methods should be used to improve understanding of the nature of variations that drive CAM ***,single-cell’omics technologies offer the possibility for in-depth characterization of the mecha-nisms that trigger environmentally controlled CAM ***,the rapid increase in new’omics data enables a comprehensive,multimodal exploration of ***,the expansion of functional geno-mics methods is paving the way for integration of CAM into farming systems.

关键词： CAM photosynthesis single-cell genomics phylogenetics crop engineering synthetic biology stress resilience

Fecal microbiota transplantation from blueberry and blackberry anthocyanins-supplemented mice ameliorated metabolic syndrome by regulating gut microbiota in a high-fat diet model

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Food Science and Human Wellness 2024年

作者： Lanlan Du Xiaoqin Ding Yan Chen Han Chen Han Lü Yanan Gai Tunyu Jian Wenlong Wu Jian Chen Weilin Li Co-Innovation Center for Sustainable Forestry in Southern China， College of Forestry， Nanjing Forestry University Jiangsu Key Laboratory for the Research and Utilization of plant Resources， Institute of Botany， Jiangsu Province and Chinese Academy of Sciences

Blueberry anthocyanins (VA) and blackberry anthocyanins (RA) showed benefits on metabolic syndrome (MS) induced by high-fat diet in mice. In this study， we investigated whether the therapeutic effects of VA and RA were achieved by the gut microbiota regulation and whether these effects could be replicated through fecal microbiota transplantation (FMT) using the high-fat diet caused MS model in pseudo-germ-free (PGF) mice. The results demonstrated that the beneficial effects of VA and RA on MS， including reducing body weight gain and fat accumulation， improving glucose and lipid metabolism， and mitigating intestinal barrier damage， were attributed to the gut microbiota and could be replicated by FMT. 16S rRNA sequencing analysis suggested that FMT from donor mice supplemented with VA and RA could regulate the gut microbiota composition. Particularly， FMT from RA supplemented mice displayed the potential to restore the diversity of gut microbiota and the ratio of Firmicutes to Bacteroidetes. Meanwhile， FMT from VA supplemented mice appeared to exert its effects by selectively influencing specific gut microbiota， such as the genus Akkermansia. Furthermore， our analysis identified 10 common differential ASVs among groups compared to HFD-HFD group. Notably， ASV＿36450 was negatively associated with metabolic parameters， suggesting that Lactobacillus might be the potential bacteria in regulating MS. Overall， our study demonstrated that FMT from VA and RA supplemented mice could ameliorate MS induced by high-fat diet in mice through regulating specific gut microbiota.

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Nuclear phylogenomics of Asteraceae with increased sampling provides new insights into convergent morphological and molecular evolution

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plant Communications 2024年第6期5卷 117-138页

作者： Guojin Zhang Junbo Yang Caifei Zhang Bohan Jiao JoséL.Panero Jie Cai Zhi-Rong Zhang Lian-Ming Gao Tiangang Gao Hong Ma College of Life Sciences Hunan Normal UniversityChangshaHunan 410081China Department of Biology the Huck Institute of the Life Sciencesthe Pennsylvania State UniversityState CollegePA 16801USA State Key Laboratory of plant Diversity and Specialty Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Wuhan Botanical Garden and Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan 430074China Department of Integrative Biology University of TexasAustinTX 78712USA CAS Key Laboratory for plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Lijiang National Forest Biodiversity National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiangYunnan 674100China

Convergent morphological evolution is widespread in flowering plants,and understanding this phenomenon relies on well-resolved *** phylogenetic reconstruction using transcriptome datasets has been successful in various angiosperm groups,but it is limited to taxa with available fresh ***,which are one of the two largest angiosperm families and are important for both ecosystems and human livelihood,show multiple examples of convergent *** Asteraceae phylogenies have resolved relationships among most subfamilies and many tribes,but many phylogenetic and evolutionary questions regarding subtribes and genera remain,owing to limited ***,we increased the sampling for Asteraceae phylogenetic reconstruction using transcriptomes and genome-skimming datasets and produced nuclear phylogenetic trees with 706 species representing two-thirds of recognized *** character reconstruction supports multiple convergent evolutionary events in Asteraceae,with gains and losses of bilateral floral symmetry correlated with diversification of some subfamilies and smaller groups,*** of the calyx-related pappus may have been especially important for the success of some subtribes and *** evolutionary analyses support the likely contribution of duplications of MADS-box and TCP floral regulatory genes to innovations in floral morphology,including capitulum inflorescences and bilaterally symmetric flowers,potentially promoting the diversification of *** divergences and reductions in CYC2 gene expression are related to the gain and loss of zygomorphic *** phylogenomic work with greater taxon sampling through inclusion of genome-skimming datasets reveals the feasibility of expanded evolutionary analyses using DNA samples for understanding convergent evolution.

关键词： sunflower family floral symmetry florets capitulescence molecular clock ancestral character pappus subtribe MADS-box TCP CYC2 gene family gene expression

Genomic evolution and insights into agronomic trait innovations of Sesamum species

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plant Communications 2024年第1期5卷 262-283页

作者： Hongmei Miao Lei Wang Lingbo Qu Hongyan Liu Yamin Sun Meiwang Le Qiang Wang Shuangling Wei Yongzhan Zheng Wenchao Lin Yinghui Duan Hengchun Cao Songjin Xiong Xuede Wang Libin Wei Chun Li Qin Ma Ming Ju Ruihong Zhao Guiting Li Cong Mu Qiuzhen Tian Hongxian Mei Tide Zhang Tongmei Gao Haiyang Zhang Henan Sesame Research Center Henan Academy of Agricultural SciencesZhengzhou 450002China TEDA School of Biological Sciences and Biotechnology Nankai UniversityTianjin 300457China College of Food Science and Technology Henan Technology UniversityZhengzhou 450001China Institute of plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450002China Crops Research Institute Jiangxi Academy of Agricultural SciencesNanchang 330200China Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031China

Sesame is an ancient oilseed crop with high oil content and ***,the evolutionary history and genetic mechanisms of its valuable agronomic traits remain ***,we report chromosome-scale genomes of cultivated sesame(Sesamum indicum L.)and six wild Sesamum species,representing all three karyotypes within this *** and genome-based phylogenic analysis revealed the evolutionary route of Sesamum species from n=13 to n=16 and revealed that allotetraploidization occurred in the wild species Sesamum *** divergence of the Sesamum genus(48.5–19.7 million years ago)during the Tertiary period and its ancient phylogenic position within eudicots were ***-genome analysis revealed 9164 core gene families in the *** families are significantly enriched in variousmetabolic pathways,including fatty acid(FA)metabolism and FA *** variations in SiPT1 and SiDT1 within the phosphatidyl ethanolamine-binding protein gene family lead to the genomic evolution of plant-architecture and inflorescence-development phenotypes in Sesamum.A genome-wide association study(GWAS)of an interspecific population and genome comparisons revealed a long terminal repeat insertion and a sequence deletion inDIR genes of wildSesamum angustifoliumand cultivated sesame,respectively;both variations independently cause high susceptibility toFusariumwilt disease.A GWAS of 560 sesame accessions combined with an overexpression study confirmed that the NAC1andPPOgenes play an important role in upregulating oil content of *** study provides high-quality genomic resources for cultivated and wild Sesamum species and insights that can improve molecular breeding strategies for sesame and other oilseed crops.

关键词： Sesamum genome evolution structural variation plant architecture Fusarium wilt disease oil content

An effective spray drift-reducing method for a plant-protection unmanned aerial vehicle

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 14-20页

作者： Yayong Chen Chaojun Hou Yu Tang Jiajun Zhuang Jintian Lin Shaoming Luo Academy of Contemporary Agricultural Engineering innovations Zhongkai University of Agriculture and EngineeringGuangzhou 510225China

A spraying system for a plant-protection unmanned aerial vehicle(UAV)was designed to reduce spray drift.A custom low-speed wind tunnel was constructed to generate a wind speed ranging from 0 to 5.92 m/*** results showed that the wind speed was attenuated with an increase in *** compensate for the attenuation,a linear-fitting model was ***,the relationship between the spraying pressure and atomization rate was analyzed,and a fuzzy algorithm was adopted to adjust the spraying angle and pressure according to the wind speed and its changing ***,an evaluation of the proposed system in the compensated wind tunnel was conducted,and the drift distance was reduced by 33.7%compared with the system without adjustment of the spraying angle and pressure.

关键词： plant-protection UAV spray drift spraying pressure spraying angle fuzzy algorithm