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Temporal and environmental factors drive community structure and function of methanotrophs in volcanic forest soils

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Journal of Forestry Research 2024年第2期35卷 1-13页

作者： Rusong Chai Hongjie Cao Qingyang Huang Lihong Xie Fan Yang Hongbin Yin Heilongjiang Forest botanical garden Harbin 150040People’s Republic of China 2 institute of Natural Resources and Ecology Science Academy of Heilongjiang ProvinceHarbin 150040People’s Republic of China

Methanotrophs,organisms that obtain oxygen by oxidizing methane,are recognized as the only known biological sink for atmospheric CH_4,and forest soil methanotrophs play crucial roles in mitigating global *** succession patterns of methanotrophic communities and functions in Wudalianchi volcano forest soils could provide a basis for the study of evolutionary mechanisms between soil microorganisms,the environment,and carbon cycling of temperate forest ecosystems under climate *** this study,the characteristics and drivers of methanotrophic community structure and function of two volcanic soils at different stages of development are analyzed,including an old volcano and a new volcano,which most recently erupted 300 years and 17-19×10^(5)years ago,respectively,and a non-volcano hills as control,based on space for time substitution and Miseq sequencing and bioinformation *** results showed that CH_(4) fluxes were significantly higher in old-stage volcano forest soils than new-stage forest soils and non-volcano forest *** were significant differences in the community composition and diversity of soil methanotrophs from different volcano forest *** was the dominant genus in all soil ***,the relative abundance of Methylococcus,along with Clonothrix,Methyloglobulus,Methylomagum,Methylomonas and Methylosarcina,were the important genera responsible for the differences in methanotrophic community structure in different volcano forest *** relative abundance of methanotroph belonging toγ-proteobacteria was significantly higher than that belonging toα-proteobacteria(P<0.05).Chao1,Shannon and Simpson indices of soil methanotrophic community were significantly lower in new-stage volcanos and were significantly affected by bulk density,total porosity,p H,nitrate,dissolved organic carbon and dissolved organic *** were significant differences in community structure between new-stage and old-stage volcano

关键词： Methanotrophs pmo A Soil development stage Volcanoes Forest soils

Carbon preservation in sedimentary deposits: Beyond mineral protection

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The Innovation 2024年第2期5卷 5-6页

作者： Yunpeng Zhao Juan Jia Chengzhu Liu Xiaojuan Feng State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China China National botanical garden Beijing 100093China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

The deposition and preservation of organic carbon(OC)in sedimentary environments(including soils and sediments)play major roles in mediating the global carbon *** than 90%of OC burial in the ocean occurs in continental margin sediments,which contributes to the evolution of the Earth’s atmosphere,such as oxygen content,over geological timescales.1 However,how OC escapes mineralization and persists in such sedimentary deposits has long been a *** protection through physicochemical associations of organic matter with minerals and cations is considered to be one of the primary mechanisms contributing to the environmental persistence of sedimentary OC.

关键词： sedimentary mineralization environments

ICE1 interacts with IDD14 to transcriptionally activate QQS to increase pollen germination and viability

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Journal of Integrative Plant Biology 2024年第8期66卷 1801-1819页

作者： Landi Luo Yan Zheng Xieshengyang Li Qian Chen Danni Yang Zhijia Gu Ya Yang Yunqiang Yang Xiangxiang Kong Yongping Yang CAS Key Laboratory of Tropical Plant Resources and Sustainable Use Xishuangbanna Tropical Botanical GardenThe Chinese Academy of SciencesXishuangbanna 666303China Germplasm Bank of Wild Species Yunnan Key Laboratory for Crop Wild Relatives OmicsKunming Institute of BotanyThe Chinese Academy of SciencesKunming 650201China School of Agriculture Yunnan UniversityKunming 650091China Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyThe Chinese Academy of SciencesKunming 650201China

In flowering plants,sexual reproductive success depends on the production of viable pollen ***,the mechanisms by which QUA QUINE STARCH(QQS)regulates pollen development and how transcriptional activators facilitate the transcription of QQS in this process remain poorly ***,we demonstrate that INDUCER OF CBF EXPRESSION 1(ICE1),a basic helix–loop–helix(b HLH)transcription factor,acts as a key transcriptional activator and positively regulates QQS expression to increase pollen germination and viability in Arabidopsis thaliana by interacting with INDETERMINATE DOMAIN14(IDD14).In our genetic and biochemical experiments,overexpression of ICE1 greatly promoted both the activation of QQS and high pollen viability mediated by ***14 additively enhanced ICE1 function by promoting the binding of ICE1 to the QQS *** addition,mutation of ICE1 significantly repressed QQS expression;the impaired function of QQS and the abnormal anther dehiscence jointly affected pollen development of the ice1-2 *** results also showed that the enhancement of pollen activity by ICE1 depends on ***,QQS interacted with CUT1,the key enzyme for long-chain lipid *** interaction both promoted CUT1 activity and regulated pollen lipid metabolism,ultimately determining pollen hydration and *** results not only provide new insights into the key function of QQS in promoting pollen development by regulating pollen lipid metabolism,but also elucidate the mechanism that facilitates the transcription of QQS in this vital developmental process.

关键词： transcriptional metabolism jointly

Functional dissimilarity in mixed forests promotes stem radial growth by mitigating tree water deficit

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National Science Review 2024年第3期11卷 55-57页

作者：张宏图艾尤尔.亥热提白云旻郭焱培李珊 Bernhard Schmid Helge Bruelheide 马克平唐志尧 institute of Ecology College of Urban and Environmental Sciences and Key Laboratory for Earth Surface Processes of Ministry of EducationPeking University College of Geography and Tourism Xinjiang Normal University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences Department of Geography Remote Sensing LaboratoriesUniversity of Zurich institute of Biology/Geobotany and botanical garden Martin Luther University Halle-Wittenberg German Centre for Integrative Biodiversity Research(iDiv)Halle-Jena-Leipzig

Tree growth is a key component of forest ecosystem functioning and is wellknown to be limited by water availability[1]. It is acknowledged that composition and diversity of co-occurring tree species can mitigate the influence of drought on tree growth through the resource complementarity for water use via niche partitioning and facilitation between different species [2,3].

关键词： RESILIENCE

Screening for Bioactive Compounds from Mulberry Leaves Combining Bio-Affinity Ultrafiltration with α-Glucosidase and Pancreatic Lipase

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Journal of Analysis and Testing 2024年第3期8卷 315-326页

作者： Hui Zhang Guilin Chen Yongli Zhang Felix Wambua Muema Jun Ding Mingquan Guo CAS Key Laboratory of Plant Germplasm Enhancement and specialty Agriculture Wuhan Botanical Garden Chinese Academy of Sciences University of Chinese Academy of Sciences institute of Biomedical Engineering Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Cixi institute of Biomedical Engineering

With the growing prevalence of diabetes and obesity worldwide, the role of α-glucosidase and lipase inhibitors has gained increasing concentration. Mulberry, a functional medicinal and edible plant, has been reported extensively in alleviating both diabetes and obesity. However, there is still a lack of refined research on its active ingredients and mechanisms. In our study, the inhibitory activities of mulberry leaf against α-glucosidase and pancreatic lipase reached 191.37 ± 14.46 and 775 ± 68.60 μg/mL, respectively. Meanwhile, it also promoted glucose consumption in the HepG2 cells model. Subsequently,four α-glucosidase ligands and four pancreatic lipase ligands were identified through bio-affinity ultrafiltration combined with liquid-chromatography-mass spectrometry(UF-HPLC–MS/MS). In vitro inhibition assays confirmed the inhibitory potential of these representative ligands. Molecular docking suggested that these possible ligands could be inserted into the active pocket of the target enzyme through multiple intermolecular forces. Our findings indicated that the polyphenols in mulberry leaves may contribute significantly to their hypoglycemic and hypolipidemic properties. Furthermore, our study provides valuable insights for the screening of active ingredients in other medicinal and edible plants, which could help in the development of new therapies for diabetes and obesity.

关键词： Bio-affinity ultrafiltration Diabetes Mulberry leaves Obesity

Genomic data and ecological niche modeling reveal an unusually slow rate of molecular evolution in the Cretaceous Eupteleaceae

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Science China(Life Sciences) 2024年第4期67卷 803-816页

作者： Kun-Li Xiang Sheng-Dan Wu Lian Lian Wen-Chuang He Dan Peng Huan-Wen Peng Xiao-Ni Zhang Hong-Lei Li Jia-Yu Xue Hong-Yan Shan Gui-Xia Xu Yang Liu Zhi-Qiang Wu Wei Wang State Key Laboratory of Plant Diversity and specialty Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyLaboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China China National botanical garden Beijing 100093China State Key Laboratory of Grassland Agro-Ecosystems and College of Ecology Lanzhou UniversityLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China College of Landscape Architecture and Life Science/institute of special Plants Chongqing University of Arts and SciencesChongqing 402160China College of Horticulture Academy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China Fairylake botanical garden Shenzhen&Chinese Academy of SciencesShenzhen 518004China

Living fossils are evidence of long-term sustained ecological ***,whether living fossils have little molecular changes remains poorly known,particularly in ***,we have introduced a novel method that integrates phylogenomic,comparative genomic,and ecological niche modeling analyses to investigate the rate of molecular evolution of Eupteleaceae,a Cretaceous relict angiosperm family endemic to East *** assembled a high-quality chromosome-level nuclear genome,and the chloroplast and mitochondrial genomes of a member of Eupteleaceae(Euptelea pleiosperma).Our results show that Eupteleaceae is most basal in Ranunculales,the earliest-diverging order in eudicots,and shares an ancient whole-genome duplication event with the other *** document that Eupteleaceae has the slowest rate of molecular changes in the observed *** unusually low rate of molecular evolution of Eupteleaceae across all three independent inherited genomes and genes within each of the three genomes is in association with its conserved genome architecture,ancestral woody habit,and conserved niche *** findings reveal the evolution and adaptation of living fossil plants through large-scale environmental change and also provide new insights into early eudicot diversification.

关键词： conservation genomics eudicots evolutionary rates niche conservatism phylogenomics

Temperature is a cryptic factor shaping the geographical pattern of genetic variation in Ceratophyllum demersum across a subtropical freshwater lake

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Plant Diversity 2024年第5期46卷 630-639页

作者： Yixian Li Xuyao Zhao Manli Xia Xinzeng Wei Hongwei Hou The State Key Laboratory of Freshwater Ecology and Biotechnology The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of SciencesInstitute of HydrobiologyChinese Academy of SciencesWuhan 430072HubeiChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Aquatic botany and Watershed Ecology Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074HubeiChina

Macrophyte habitats exhibit remarkable heterogeneity,encompassing the spatial variation of abiotic and biotic components such as changes in water conditions and weather as well as anthropogenic *** factors are thought to be important drivers shaping the genetic and epigenetic variation of aquatic ***,the links among genetic diversity,epigenetic variation,and environmental variables remain largely unclear,especially for clonal aquatic ***,we performed population genetic and epigenetic analyses in conjunction with habitat discrimination to elucidate the environmental factors driving intraspecies genetic and epigenetic variation in hornwort(Ceratophyllum demersum)in a subtropical *** factors were highly correlated with the genetic and epigenetic variation of ***,with temperature being a key driver of the genetic *** temperature was detected to be correlated with greater genetic and epigenetic *** and epigenetic variation were positively driven by water temperature,but were negatively affected by ambient air *** findings indicate that the genetic and epigenetic variation of this clonal aquatic herb is not related to the geographic feature but is instead driven by environmental conditions,and demonstrate the effects of temperature on local genetic and epigenetic variation in aquatic systems.

关键词： Genetic diversity Epigenetic variation Temperature Macrophyte Restoration

RAD-seq data reveals robust phylogeny and morphological evolutionary history of Rhododendron

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Horticultural Plant Journal 2024年第3期10卷 866-878页

作者： Yuanting Shen Gang Yao Yunfei Li Xiaoling Tian Shiming Li Nian Wang Chengjun Zhang Fei Wang Yongpeng Ma Yunnan Key Laboratory for Integrative Conservation of Plant Species with Extremely Small Populations Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China University of Chinese Academy of Sciences Beijing 100049China Beijing Genomics of institute ShenzhenGuangdong 518120China Guiyang institute of Humanities and Technology GuiyangGuizhou 550025China State Forestry and Grassland Administration Key Laboratory of Silviculture in Downstream Areas of the Yellow River College of ForestryShandong Agricultural UniversityTai'anShandong 271018China The Southwest China of Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China West China Subalpine botanical garden Institute of BotanyChinese Academy of SciencesChengduSichuan 611834China

Rhododendron is famous for its high ornamental ***,the genus is taxonomically difficult and the relationships within Rhododendron remain *** addition,the origin of key morphological characters with high horticulture value need to be *** problems largely hinder utilization of germplasm *** studies attempted to disentangle the phylogeny of Rhododendron,but only used a few genomic markers and lacked large-scale sampling,resulting in low clade support and contradictory phylogenetic ***,we used restriction-site associated DNA sequencing(RAD-seq)data and morphological traits for 144 species of Rhododendron,representing all subgenera and most sections and subsections of this species-rich genus,to decipher its intricate evolutionary history and reconstruct ancestral *** results revealed high resolutions at subgenera and section levels of Rhododendron based on RAD-seq *** optimal phylogenetic tree and split tree recovered five lineages among ***(cladeⅠ)formed the basal *** and Azaleastrum formed cladeⅡand had sister ***Ⅲincluded all scaly rhododendron ***(cladeⅣ)formed a sister group to ***(cladeⅤ).The results of ancestral state reconstruction showed that Rhododendron ancestor was a deciduous woody plant with terminal inflorescence,ten stamens,leaf blade without scales and broadly funnelform corolla with pink or purple *** study shows significant distinguishability to resolve the evolutionary history of Rhododendron based on high clade support of phylogenetic tree constructed by RAD-seq *** also provides an example to resolve discordant signals in phylogenetic trees and demonstrates the application feasibility of RAD-seq with large amounts of missing data in deciphering intricate evolutionary ***,the reconstructed ancestral state of six important characters provides insights into the inn

关键词： Rhododendron RAD-seq Missing data Quartet sampling(QS) Ancestral state reconstruction

Understanding the mechanisms and potential pathways of soil carbon sequestration from the biogeochemistry perspective

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Science China Earth Sciences 2024年

作者： Xiaojuan FENG Guohua DAI Ting LIU Juan JIA Erxiong ZHU Chengzhu LIU Yunpeng ZHAO Ya WANG Enze KANG Jun XIAO Wei LI State Key Laboratory of Vegetation and Environmental Change Institute of Botany Chinese Academy of Sciences China National botanical garden College of Resources and Environment University of Chinese Academy of Sciences Department of Earth Sciences National Natural Science Foundation of China

Soil carbon sequestration is listed by the United Nations Framework Convention on Climate Change as one of the key ways to achieve long-term “carbon neutrality” in the context of global warming. Soil carbon sequestration is a complex biogeochemical process that involves plants, microbes, and rock minerals at its core. Yet, its regulation mechanisms and promotion pathways remain unclear. This paper reviews recent progress in the related domestic and international research and provides an overview of the key processes and mechanisms of soil carbon sequestration. The main pathways for enhancing soil carbon sequestration (including plant inputs, mineral protection, microbial transformation, and rock weathering) are summarized. The paper also discusses and synthesizes how advanced biogeochemical methods and technologies may be employed to explore soil carbon sequestration mechanisms and potentials. The overall aim of this review is to improve our understanding of soil carbon sequestration as a nature-based solution to combatting climate change from the biogeochemistry perspective, and to highlight the role of fundamental research in Earth Sciences in helping to achieve China’s carbon neutrality goals.

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