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Plant Diversity 2019年第5期41卷 323-329页

作者： Lin-Lin Wang Zhi-Qiang Zhang Yong-Ping Yang yuan-wen duan Key Laboratory for Plant Diversity and Biogeography of East Asia Germplasm Bank of Wild SpeciesInstitute of Tibetan Plateau Research at KunmingKunming Institute of BotanyChinese Academy of SciencesKunmingYunnan650201China University of the Chinese Academy of Sciences Beijing100049China Laboratory of Ecology and Evolutionary Biology Yunnan UniversityKunmingYunnan650091China

Dasiphora fruticosa comprises male,female and hermaphrodite plants,which are distributed sympatrically in some populations on the Qinghai-Tibet *** explore what governs the coexistence of these three sexual phenotypes,we investigated the DNA contents,pollen and ovule production,pollen deposition,and performed hand-pollination in both hermaphroditic and dioecious individuals of *** cytometry confirmed that the DNA content of males and females were almost twice as much as that of the *** and female flowers produced more pollen grains and ovules than hermaphroditic ***-pollinated treatments showed that unisexual flowers were sterile in one sexual function and bisexual flowers were fertile for both functions,but no sterile seeds were produced between unisexual and bisexual *** findings imply that polyploidy is related to gender dimorphism,and both are likely to play a strong role in the coexistence of two cryptic biological species of ***(low ploidy hermaphroditic species and high ploidy dioecious species)in the Qinghai-Tibet Plateau.

关键词： Gender polymorphism Dioecy Dasiphora fruticosa Polyploidy Reproductive isolation

Differences in floral traits and flower visitation rates in mating systems in Prunella vulgaris(Lamiaceae)

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Journal of Plant Ecology 2022年第1期15卷 39-56页

作者： Tial C.Ling Lin-Lin Wang Yong-Ping Yang yuan-wen duan CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Institute of Tibetan Plateau Research at Kunming Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina University of the Chinese Academy of Sciences Beijing 100049China CAS Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglun 666303China

Floral traits and the number of visitors are expected to change with different mating *** tested this hypothesis by comparing flowers of Prunella vulgaris(Lamiaceae)with inserted and exserted styles across a strongly exserted style biased,an exserted style biased,and a strongly inserted style biased subalpine *** examined flowering phenology,floral morphology,flower visitation rate,capacity for autonomous selfpollination and visitor contribution to seed production for each style type and in each *** also examined inbreeding depression(ID)by comparing the relative performance of progeny from self-and *** style plants had larger and more open flowers,increased pollen production,higher amounts of nectar rewards and higher visitation and outcrossing rates than inserted style *** on the population level,the visitation rates were higher in the exserted style-biased populations than in the inserted style-biased *** style plants provided a stronger reproductive assurance(RA)through autonomous selfing than exserted style *** and outcrossing rates did not differ among populations,showing low visitation rates may be sufficient for adequate seed production in *** inserted style plants had a lower ID level than exserted style plants,the ID of both was less than 0.5,suggesting that an ID should not counteract the evolution of selfing in this *** style plants provide RA through autonomous selfing,and exserted style plants ensure outcrossing through pollinator services,supporting a stable mixed mating system in this subalpine plant.

关键词： autonomous selfing floral traits inbreeding depression visitors Prunella vulgaris reproductive assurance

Cell number explains the intraspecific spur-length variation in an Aquilegia species

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Plant Diversity 2019年第5期41卷 307-314页

作者： Zhi-Li Zhou yuan-wen duan Yan Luo Yong-Ping Yang Zhi-Qiang Zhang Institute of Tibetan Plateau Research at Kunming Kunming Institute of BotanyChinese Academy of SciencesKunming650201China University of Chinese Academy of Sciences Beijing 100049China Gardening and Horticulture Department Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMengla666303China Laboratory of Ecology and Evolutionary Biology Yunnan UniversityKunming650091China

Variations of nectar spur length allow pollinators to utilize resources in novel ways,leading to the different selective pressures on spurs and allowing taxa to ***,the mechanisms underlying spur length variation remain *** comparisons of spur length suggest that both cell division and anisotropic expansion could explain the changes of spur length,and that hormone-related genes contribute to the process of spur *** contrast,little is known about intraspecific spur length *** Aquilegia rockii,spur length varies strikingly,ranging from 1 mm to 18 *** examine the potential mechanisms underlying spur length variation in ***,we observed cell morphology and analyzed RNA-seq of short-and long-spurred *** electron microscopy revealed that at two positions on spurs there were no differences in either cell density or cell anisotropy between short-and long-spurred flowers,suggesting that in *** changes in cell number may explain variations in spur *** addition,we screened transcriptomes of short-and long-spurred flowers for differentially expressed genes;this screen identified several genes linked to cell division(e.g.,F-box,CDKB2-2,and LST8),a finding which is consistent with our analysis of the cellular morphology of ***,we did not find any highly expressed genes involved in the hormone pathway in long-spurred *** contrast to previous hypotheses that anisotropic cell expansion leads to interspecific spur variation in Aquilegia,our results suggest that cell number changes and related genes are mainly responsible for spur length variations of ***,the underlying mechanisms of similar floral traits in morphology may be quite different,enriching our understanding of the mechanisms of flower diversity in angiosperms.

关键词： Aquilegia rockii Cell number Columbine Floral polymorphism Intraspecific variation Nectar spur

Delayed Selfing in an Alpine Biennial Gentianopsis paludosa(Gentianaceae) in the Qinghai-Tibetan Plateau

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Journal of Integrative Plant Biology 2010年第6期52卷 593-599页

作者： yuan-wen duan Amots Dafni Qin-Zheng Hou Ya-Ping He Jian-Quan Liu Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology the Chinese Academy of Sciences Xining 810001 China MOE Key Laboratory of Arid and Grassland Ecology Lanzhou University Lanzhou 730000 China Laboratory of Pollination Ecology Institute of Evolution Faculty of Science and Science Education Haifa University Haifa 31905 Israe

Delayed selfing could provide ovules with an opportunity to be fertilized as a means of ＂pollination assurance＂ before the flowers wilt. It could, thus, be regarded as an adaptation to unpredictable pollinator environments. Within the alpine biennial Gentianopsis paludosa, the showy flowers and herkogamy at the early stage of a flower＇s life cycle may favor outcrossing. As the flower ages, anthers contact the central stigma due to the elongation of all filaments, resulting in autonomous selfing. Flower visitors are extremely rare in a high altitude population; and examination of the mating system indicates that G. paludosa is self-pollinated under natural conditions in this population. While at the lower altitude, the bumblebee visitation rate is relatively high but possibly unreliable. Stigma receptivity is the highest on the third day of anthesis, and decreases thereafter. Pollen viability is the highest when flowers open, and gradually decreases later. Self-pollination of G. paludosa occurs at the late stage of a flower＇s lifecycle when stigma receptivity and pollen viability have both decreased, suggesting delayed selfing and assurance of seed production. This delayed selfing could assure seed production under the constraints of pollinator scarcity, but ensure outcrossing when pollinators were available. Such a flexible pollination mechanism is highly adaptive in the alpine environment of the Qinghai-Tibetan Plateau.

关键词： Selfs Selfing Pollinators Pollination Self pollination

Multiple lines of evidence supports the two varieties of Halenia elliptica(Gentianaceae)as two species

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Plant Diversity 2022年第3期44卷 290-299页

作者： Jin-Feng Wu Dong-Rui Jia Rui-Juan Liu Zhi-Li Zhou Lin-Lin Wang Min-Yu Chen Li-Hua Meng yuan-wen duan School of Life Sciences Yunnan Normal UniversityKunming 650092PR China School of Ecology and Environmental Science&Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments Yunnan UniversityKunming 650091PR China Northwest Institute of Plateau Biology Chinese Academy of SciencesXining 810001PR China The Germplasm Bank of Wild Species Institute of Tibetan Plateau Research at KunmingKunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPR China Yunnan Lijiang Forest Ecosystem National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiang 674100YunnanPR China

Delimiting species requires multiple sources of ***,we delimited two varieties of Halenia elliptica(Gentianaceae)using several lines of evidence,including morphological traits and mating system in a sympatric population,phylogenetic relationships based on nrITS and cpDNA(rpl16)data,and complete chloroplast genome *** analysis of 21 morphological traits clearly separates the two varieties of *** of the flowering process and pollination treatments indicate that *** *** produces seeds via outcrossing,whereas *** *** produces seeds via mixed ***,hand-pollinated hybridization of the two varieties produced no *** of pollinators showed that when bees began a pollination bout on *** *** they preferred to continue pollinating this variety;however,when they began a pollination bout on *** ***,they showed no preference for either *** analysis confirmed the monophyly of ***,which was further divided into two monophyletic clades corresponding to the two varieties.A large number of variants from the chloroplast genomes reflected remarkable genetic dissimilarities between the two varieties of *** recommend that the two varieties of *** should be revised as two species(*** and ***).Our findings indicate that *** varieties may have split into two separate species due to a shift in mating system,changes in flowering phenology and/or post-pollination reproductive isolation.

关键词： Halenia elliptica Flowering phenology Mating system Reproductive isolation Monophyly Species delimitation

Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra

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Journal of Plant Ecology 2021年第2期14卷 229-240页

作者： Lin-Lin Wang Na-Cai Yang Min-Yu Chen Yong-Ping Yang yuan-wen duan CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Institute of Tibetan Plateau Research at Kunming Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina University of the Chinese Academy of Sciences Beijing 100049China

Aims Sexual dimorphism is a common trait in plants with sex separation,which could influence female and male functions *** a subdioecious population of Dasiphora glabra on the Qinghai-Tibet Plateau,we investigated sexual dimorphism of floral traits and their effects on pollinator visitation,pollen flow and seed *** also examined differences in genome size of hermaphroditic and dioecious *** We examined sexual dimorphism in flower number,flower size,and pollen and ovule production in a subdioecious population of *** compared pollinator visitation,pollen dispersal and seed production between *** also examined the genome size of three sex morphs using flow *** Findings The number of hermaphroditic plants was significantly more than that of male and female plants,and dioecious plants accounted for ca.40%in the study *** plants produced significantly more flowers than male and female *** size of male flowers was significantly larger than that of female and hermaphroditic *** flowers did not produce more pollen grains than hermaphroditic flowers,but female flowers produced more ovules than hermaphroditic *** were the most frequent flower visitors and preferred large flowers,but their movements between flowers did not show any preference to large *** pollen flows suggested that effective pollen transfer was generally low for both hermaphroditic and male flowers,corresponding to the low seed set of naturally pollinated *** contents of male and female plants were *** times than those of hermaphroditic *** results suggest male and female individuals have undergone polyploidy events and thus are not compatible with hermaphroditic *** dimorphism in floral traits in relation to pollination of dioecious plants might show an advantage in female and male functions,but this advantage is masked largely by low effectiveness o

关键词： natural selection flower traits polyploidy sex separation sexual dimorphism

From a bee's eye:Effects of UV bullseye size on reproductive success in a dioecious vine Herpetospermum pedunculosum(Cucurbitaceae)

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Plant Diversity 2024年第6期46卷 766-773页

作者： Jin-Feng Wu Zhu-Qing Chen Xi-Long Wang Yan-Li Tu Lin-Lin Wang Yong-Ping Yang Li-Hua Meng yuan-wen duan School of Life Sciences Yunnan Normal UniversityKunming 650092YunnanPR China Department of Plant Resources Xizang Plateau Institute of BiologyLasa 850000XizangPR China The Germplasm Bank of Wild Species Institute of Tibetan Plateau Research at KunmingKunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanPR China Yunnan Lijiang Forest Ecosystem National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiang674100YunnanPR China

Descriptions of floral traits based on the visual capabilities of pollinators would advance our understanding of flower evolution and plantepollinator *** such trait is the contrasting UV bullseye color pattern,which is invisible to human eyes but can be perceived by bee ***,it remains largely unknown how UV bullseye size affects male and female reproductive *** examined UV bullseye patterns in the dioecious Herpetospermum pedunculosum,and quantified the effects of UV bullseye size on male and female *** UV bullseye size and flower size were larger in male flowers than in female *** dominant pollinators of *** were bees,which could perceive the UV bullseye *** pollinators exhibited a preference for male flowers with nectar rewards,and visited a greater number of male flowers on plants with a larger UV *** reproductive fitness was found to decrease in plants with larger UV bullseyes,likely due to the high rate of intra-plant pollen *** female flowers were less attractive to bee pollinators,resulting in pollen limitation of seed *** flowers with moderate UV bullseye size produced more *** results suggest that UV bullseye is subject to different selection via male and female fitness of *** with deceptive pollination,and large UV bullseye is generally not *** research is the first to examine the relationship between UV bullseye size and plant reproductive success,highlighting that floral evolution should be investigated from the pollinator's eye in future research.

关键词： UV bullseye Pollinator behavior Flower display Male and female fitness Herpetospermum pedunculosum

Peripheral mitochondrial DNA as a neuroinflammatory biomarker for major depressive disorder

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Neural Regeneration Research 2025年第6期20卷 1541-1554页

作者： Jinmei Ye Cong duan Jiaxin Han Jinrong Chen Ning Sun yuan Li Tifei yuan Daihui Peng Division of Mood Disorder Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry First Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Shanghai Key Laboratory of Psychotic Disorders Brain Health InstituteNational Center for Mental DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

In the pathogenesis of major depressive disorder, chronic stress-related neuroinflammation hinders favorable prognosis and antidepressant response. Mitochondrial DNA may be an inflammatory trigger, after its release from stress-induced dysfunctional central nervous system mitochondria into peripheral circulation. This evidence supports the potential use of peripheral mitochondrial DNA as a neuroinflammatory biomarker for the diagnosis and treatment of major depressive disorder. Herein, we critically review the neuroinflammation theory in major depressive disorder, providing compelling evidence that mitochondrial DNA release acts as a critical biological substrate, and that it constitutes the neuroinflammatory disease pathway. After its release, mitochondrial DNA can be carried in the exosomes and transported to extracellular spaces in the central nervous system and peripheral circulation. Detectable exosomes render encaged mitochondrial DNA relatively stable. This mitochondrial DNA in peripheral circulation can thus be directly detected in clinical practice. These characteristics illustrate the potential for mitochondrial DNA to serve as an innovative clinical biomarker and molecular treatment target for major depressive disorder. This review also highlights the future potential value of clinical applications combining mitochondrial DNA with a panel of other biomarkers, to improve diagnostic precision in major depressive disorder.

关键词： biomarker cytokine exosomes inflammasome major depressive disorder microglia mitochondrial DNA mitochondrial dysfunction neuroinflammation Toll-like receptor

Activation of adult endogenous neurogenesis by a hyaluronic acid collagen gel containing basic fibroblast growth factor promotes remodeling and functional recovery of the injured cerebral cortex

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Neural Regeneration Research 2025年第10期20卷 2923-2937页

作者： Yan Li Peng Hao Hongmei duan Fei Hao wen Zhao Yudan Gao Zhaoyang Yang Kwok-Fai So Xiaoguang Li Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina China Rehabilitation Science Institute China Rehabilitation Research CenterBeijing Key Laboratory of Neural Injury and RehabilitationBeijingChina Center of Neural Injury and Repair Beijing Institute for Brain DisordersBeijingChina Beijing Key Laboratory for Biomaterials and Neural Regeneration School of Engineering MedicineBeihang UniversityBeijingChina Guangdong-HongKong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administration RegionChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-HongKong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijingChina

The presence of endogenous neural stem/progenitor cells in the adult mammalian brain suggests that the central nervous system can be repaired and regenerated after ***,whether it is possible to stimulate neurogenesis and reconstruct cortical layers II to VI in non-neurogenic regions,such as the cortex,remains *** this study,we implanted a hyaluronic acid collagen gel loaded with basic fibroblast growth factor into the motor cortex immediately following traumatic *** findings reveal that this gel effectively stimulated the proliferation and migration of endogenous neural stem/progenitor cells,as well as their differentiation into mature and functionally integrated ***,these new neurons reconstructed the architecture of cortical layers II to VI,integrated into the existing neural circuitry,and ultimately led to improved brain *** findings offer novel insight into potential clinical treatments for traumatic cerebral cortex injuries.

关键词： adult endogenous neurogenesis basic fibroblast growth factor-hyaluronic acid collagen gel cortical remodeling functional recovery migration motor cortex injury neural circuits neural stem cells newborn neurons proliferation

Drosophila models used to simulate human ATP1A1 gene mutations that cause Charcot-Marie-Tooth type 2 disease and refractory seizures

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Neural Regeneration Research 2025年第1期20卷 265-276页

作者： Yao yuan Lingqi Yu Xudong Zhuang Dongjing wen Jin He Jingmei Hong Jiayu Xie Shengan Ling Xiaoyue Du wenfeng Chen Xinrui Wang Institute of Life Sciences College of Biological Science and EngineeringFuzhou UniversityFuzhouFujian ProvinceChina NHC Key Laboratory of Technical Evaluation of Fertility Regulation for Non-human Primate(Fujian Maternity and Child Health Hospital) FuzhouFujian ProvinceChina Medical Research Center Fujian Maternity and Child Health HospitalCollege of Clinical Medicine for Obstetrics&Gynecology and PediatricsFujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurology and Institute of Neurology of The First Affiliated Hospital Institute of Neuroscienceand Fujian Key Laboratory of Molecular NeurologyFujian Medical UniversityFuzhouFujian ProvinceChina

Certain amino acids changes in the human Na^(+)/K^(+)-ATPase pump,ATPase Na^(+)/K^(+)transporting subunit alpha 1(ATP1A1),cause Charcot-Marie-Tooth disease type 2(CMT2)disease and refractory *** develop in vivo models to study the role of Na^(+)/K^(+)-ATPase in these diseases,we modified the Drosophila gene homolog,Atpα,to mimic the human ATP1A1 gene mutations that cause *** located within the helical linker region of human ATP1A1(I592T,A597T,P600T,and D601F)were simultaneously introduced into endogenous Drosophila Atpαby CRISPR/Cas9-mediated genome editing,generating the Atpα^(TTTF)*** addition,the same strategy was used to generate the corresponding single point mutations in flies(Atpα^(I571T),Atpα^(A576T),Atpα^(P579T),and Atpα^(D580F)).Moreover,a deletion mutation(Atpα^(mut))that causes premature termination of translation was generated as a positive *** these alleles,we found two that could be maintained as homozygotes(Atpα^(I571T)and Atpα^(P579T)).Three alleles(Atpα^(A576T),Atpα^(P579)and Atpα^(D580F))can form heterozygotes with the Atpαmut *** found that the Atpαallele carrying these CMT2-associated mutations showed differential phenotypes in *** heterozygous for Atpα^(TTTF)mutations have motor performance defects,a reduced lifespan,seizures,and an abnormal neuronal *** Drosophila models will provide a new platform for studying the function and regulation of the sodium-potassium pump.

关键词： ATP1A1 Atpα bang-sensitive paralysis Charcot-Marie-Tooth disease type 2 CRISPR/Cas9 homology-directed repair Na^(+)/K^(+)-ATPase point mutation seizures sodium pump