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Alternative relay regulates the adenosine triphosphatase activity of Locusta migratoria striated muscle myosin

Insect Science 2024年第2期31卷 435-447页

作者： Jie Hao Chang Liu Ning Zhang Jing Li Tong Ni Mingbo Qu Xiang-dong Li State Key Laboratory oflntegrated Management of lnsect Pests and Rodents Insttute of ZoologyChinese Academy of SciencesBejingChina University of Chinese Academy of Sciences BejingChina School of Bioengeering Dalian University of TechnologyDalianChina

Locust(Locusta migratoria)has a single striated muscle myosin heavy chain(Mhc)gene,which contains 5 clusters of alternative exclusive exons and 1 differently included penultimate *** alternative exons of Mhc gene encode 4 distinct regions in the myosin motor domain,that is,the N-terminal SH3-like domain,one lip of the nucleotide-binding pocket,the relay,and the ***,we investigated the role of the alternative regions on the motor function of locust muscle *** Sf9-baculovirus protein expression system,we expressed and purified 5 isoforms of the locust muscle myosin heavy meromyosin(HMM),including the major isoform in the thorax dorsal longitudinal flight muscle(FL1)and 4 isoforms expressed in the abdominal intersegmental muscle(AB1 to AB4).Among these 5 HMMs,FL1-HMM displayed the highest level of actin-activated adenosine triphosphatase(ATPase)activity(hereafter referred as ATPase activity).To identify the alternative region(s)responsible for the elevated ATPase activity of FL1-HMM,we produced a number of chimeras of FL1-HMM and *** with the relay of AB4-HMM(encoded by exon-14c)substantially decreased the ATPase activity of FL1-HMM,and conversely,the relay of FL1-HMM(encoded by exon-14a)enhanced the ATPase activity of *** showed that the exon-14a-encoded residues Gly474 and Asn509 are responsible for the elevated ATPase activity of *** results indicate that the alternative relay encoded by exon-14a/c play a key role in regulating the ATPase activity of FL1-HMM and AB4-HMM.

关键词： alternative splicing ATPase Locusta migratoria molecular motor muscle myosin

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Antifertility effects of EP-1 (quinestrol and levonorgestrel) on Pacific rats (Rattus exulans)

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Integrative Zoology 2024年第1期19卷 127-142页

作者： Jing LIU Feiyun TU Ming LIU Jichao WANG Zhibin ZHANG Ministry of Education Key Laboratory for Ecology of Tropical Islands Key Laboratory of Tropical Animal and Plant Ecology of Hainan ProvinceCollege of Life SciencesHainan Normal UniversityHaikouHainanChina Secretariat Office International Society of Zoological Science and Society and Journal OfficeInstitute of ZoologyChinese Academy of SciencesBeijingChina State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijingChina

Pest rodents pose a serious threat to island *** control could be an alternative approach to control the impact of rodents on these *** this study,we examined the antifertility effects of EP-1 baits containing quinestrol(E)and levonorgestrel(P)using a dose of 50 ppm E and P at three different ratios(E:P ratio=1:2,1:1,and 2:1)on Pacific rats(Rattus exulans)in the Xisha Islands,Hainan,*** to the control group,all animals in EP-1 treatment groups showed significantly decreased food intake and body *** treated males,there were obvious abnormalities in testis structure and a significant decrease of relative seminal vesicle weight,but no significant effect on relative uterine and ovarian weights(g kg-1 body weight),or ovarian structure in *** 8%sucrose to the original 50-ppm baits(E:P ratio=1:1)significantly increased bait palatability for males and *** dose induced uterine edema and abnormalities of ovarian structure in females but had no significant negative effect on the relative testis,epididymis,and seminal vesicle weights(g kg-1 body weight)or sperm density in *** summary,50-ppm EP-1(1:1)baits have the potential to disrupt the fertility of females,and 8%sucrose addition to the EP-1 baits(E:P ratio=1:1)could improve bait *** dose disrupted the testis structure in *** studies are needed to improve bait acceptance and assess the antifertility effects of EP-1(1:1)on Pacific rats in captive breeding trials and underfield conditions.

关键词： EP-1 fertility control island biodiversity conservation levonorgestrel quinestrol Rattus exulans

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Effects of simulated gut pH environment on bacterial composition and pheromone production of Dendroctonus valens

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Insect Science 2024年第1期31卷 225-235页

作者： Qingjie Cao Yu Zhao Tuuli-Marjaana Koski Huiping Li Jianghua Sun College of Forestry Hebei Agricultural UniversityBaodingHebei ProvinceChina State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina College of Life Science/Hebei Basic Science Center for Biotic Interactions Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei ProvinceChina

Bark beetles are an economically and ecologically important insect group,with aggregation behavior and thus host colonization success depends on pheromone-mediated *** some species,such as the major invasive forest pest in China,red turpentine beetle(Dendroctonus valens),gut microbiota participates in pheromone production by converting tree monoterpenes into pheromone ***,how variation in gut microenvironment,such as pH,affects the gut microbial composition,and consequently pheromone production,is *** this study,we fed wild caught *** with 3 different pH media(main host diet with natural pH of 4.7;a mildly acidic diet with pH 6 mimicking the beetle gut pH;and highly acidic diet with pH 4),and measured their effects on the gut pH,bacterial community and production of the main aggregation and anti-aggregation pheromone(verbenone).We further tested the verbenone production capacity of 2 gut bacterial isolates in different pH environments(pH 6 and 4).Compared to natural state or main host diet,feeding on less acidic diet(pH 6)diluted the acidity of the gut,whereas feeding on highly acidic diet(pH 4)enhanced *** changes in gut pH reduced the abundance of dominant bacterial genera,resulting in decreased verbenone ***,the highest pheromone conversion rate of the bacterial isolates was observed in pH mimicking the acidity in beetle *** together,these results indicate that changes in gut pH can affect gut microbiota composition and pheromone production,and may therefore have the potential to affect host colonization behavior.

关键词： Dendroctonus valens gut bacteria gut pH verbenone

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The Roman k-domatic Number of a Graph

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Acta Mathematica Sinica,English Series 2011年第10期27卷 1899-1906页

作者： Seyed Mahmoud SHEIKHOLESLAMI Lutz VOLKMANN Department of Mathematics Azarbaijan University of Tarbiat MoaUem Tabriz 53714-161 L R. Iran and School of Mathematics Institute for Research in Fundamental Sciences ( IPM) Lehrstuhl H fiir Mathematik RWTH Aachen University 52056 Aachen Germany

Let k be a positive integer. A Roman k-dominating function on a graph G is a labeling f ： V（G） → {0, 1, 2} such that every vertex with label 0 has at least k neighbors with label 2. A set {f1, f2,..., fd} of distinct Roman k-dominating functions on G with the property that ∑di=1 fi（v） ≤ 2 for each v C V（G）, is called a Roman k-dominating family （of functions） on G. The maximum number of functions in a Roman k-dominating family on G is the Roman k-domatic number of G, denoted by dkR（G）. Note that the Roman 1-domatic number dlR（G） is the usual Roman domatic number dR（G）. In this paper we initiate the study of the Roman k-domatic number in graphs and we present sharp bounds for dkR（G）. In addition, we determine the Roman k-domatic number of some graphs. Some of our results extend those given by Sheikholeslami and Volkmann in 2010 for the Roman domatic number.

关键词： Roman domination number Roman domatic number Roman k-domination number Ro- man k-domatic number

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Ideals Whose First Two Betti Numbers Are Close

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Algebra Colloquium 2015年第4期22卷 671-676页

作者： Keivan Borna S.H. Hassanzadeh Faculty of Mathematical Sciences and Computer Kharazmi University Tehran Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) Tehran Iran Faculty of Mathematical Sciences and Computer Kharazmi University Tehran Iran Institute of Mathematics Universidade Federal de Rio de Janeiro Brasil

For an ideal I of a Noetherian local ring （R, m, k） one hasβR1（I） -β0R（I） ≥-1. It is demonstrated that some residual intersections of an ideal I for whichβ1R（I） -β0R（I） = -1 or 0 are perfect.

关键词： Betti numbers linlkage theory perfect Gorenstein ideals residual intersection

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Tameness and Artinianness of Graded Generalized Local Cohomology Modules

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Algebra Colloquium 2015年第1期22卷 131-146页

作者： M. Jahangiri N. Shirmohammadi Sh. Tahamtan Faculty of Mathematical sciences and Computer Kharazmi University rlbhran Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5749 Tehran Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5749 rlbhran Iran Department of Mathematics University of Tabriz Tabriz Iran Islamic Azad University Borujerd Branch Boroujerd Iran

Let R = ⊙n〉0 Rn be a standard graded ring, a ∩ ⊙n〉0 Rn an ideal of R, and M, N two finitely generated graded R-modules. This paper studies the homogeneous components of graded generalized local cohomology modules. We show that for any i 〉 0, the n-th graded component Hiα（M, N）n of the i-th generalized local cohomology module of M and N with respect to a vanishes for all n 〉〉 0. Some sufficient conditions are pro- posed to satisfy the equality sup{end（Hiα （M, N）） [ i _〉 0} = sup{end（HiR＋（M, N））｜ i 〉 0}. Also, some sufficient conditions are proposed for the tameness of Hiα（M, N） such that i = fRα＋（M,N） or i = cdα（M,g）, where fRα＋（M,N） and cdα（M,g） denote the R＋- finiteness dimension and the cohomological dimension of M and N with respect to a, respectively. Finally, we consider the Artinian property of some submodules and quotient modules of Hjα（M, N）, where j is the first or last non-minimax level of Hiα（M, N）.

关键词： graded rings and modules generalized local cohomology Artinian modules,tameness

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Jordan tori for a torsion free abelian group

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Frontiers of Mathematics in China 2015年第3期10卷 477-509页

作者： Saeid AZAM Yoji YOSHII Malihe YOUSOFZADEH Department of Mathematics University of Isfahan P. O. Box 81745-163 Isfahan Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P. O. Box 19395-5746 Tehran Iran Department of Mathematics Education Iwate University Ueda 3-18-33 Morioka Iwate 020-8550 Japan

We classify Jordan G-tori, where G is any torsion-free abelian group. Using the Zelmanov prime structure theorem, such a class divides into three types, the Hermitian type, the Clifford type, and the Albert type. We c... 详细信息

关键词： Jordan tori extended aftlne Lie algebra invariant affine reflectionalgebra

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啮齿动物自我梳理行为调控的神经基质（英文）

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第10期 841-857页

作者：李关卿路蝉伊尹苗苗王鹏张蓬波吴家梁王文强王鼎王孟月刘佳涵林星翰张健旭王振山余逸群张云峰中国科学院动物研究所农业虫害鼠害综合治理研究国家重点实验室中国科学院大学中国科学院生物互作卓越创新中心河北大学生命科学学院中国科学院遗传与发育生物学研究所分子发育生物学国家重点实验室天津市环湖医院康复医学科首都医科大学附属北京朝阳医院人类生殖医学中心招远市人民医院胃肠外科中国科技大学生命科学与医学学院复旦大学附属眼耳鼻喉科医院耳鼻喉科复旦大学附属眼耳鼻喉科医院耳鼻喉科研究院复旦大学附属眼耳鼻喉科医院嗅觉疾病诊疗及研究中心

梳理是一种进化上保守的刻板行为，广泛存在于包括人类在内的各种动物中。梳理行为在动物维持体表清洁、调节体温、去觉醒、减轻压力以及社会行为等方面发挥重要功能。在啮齿类动物中，梳理行为通常可以分为四个连续的阶段，并以从头至... 详细信息

梳理是一种进化上保守的刻板行为，广泛存在于包括人类在内的各种动物中。梳理行为在动物维持体表清洁、调节体温、去觉醒、减轻压力以及社会行为等方面发挥重要功能。在啮齿类动物中，梳理行为通常可以分为四个连续的阶段，并以从头至尾顺序的方式进行重复刻板动作：从口鼻部到面部，到头部，最后以舔舐躯体结束。梳理行为的发生具有环境依赖性，说明此行为具有适应的重要性。本综述简要总结了啮齿类动物梳理行为涉及的神经基质，并探讨了异常梳理行为表型的存在与神经精神疾病和神经退行性疾病模型的相关性。此外，本文进一步强调指出，在神经精神病学模型中，啮齿类动物的梳理行为可作为测定重复刻板行为的一种可靠测量方法，有望在转化精神病学中应用。本文主要聚焦啮齿动物的自我理毛行为，因受限于篇幅，未对allogrooming（同种动物通过舔舐或以仔细啃咬的方式为另一种动物梳理毛发）与heterogrooming（在特定情况下发生的对另一种动物的梳理行为，如母性行为、性行为、攻击行为或社会行为）展开讨论。

关键词：梳理刻板行为句法链从头至尾进行神经精神疾病

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Cohen-Macaulay and Gorenstein Path Ideals of Trees

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Algebra Colloquium 2016年第3期23卷 469-480页

作者： Sara Saeedi Madani Dariush Kianl Department of Pure Mathematics Faculty of Mathematics and Computer Science Amirkabir University of ~bchnology (Tehran Polytechnic) 424 Hafez Ave. Tehran 15914 Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5746 Tehran Iran

Let R = k[x1,...,xn], where k is a field. The path ideal （of length t ≥ 2） of a directed graph G is the monomial ideal], denoted by It （G）, whose generators correspond to the directed paths of length t in G. Let F be a directed rooted tree. We characterize all such trees whose path ideals are unmixed and Cohen-Macaulay. Moreover, we show that R/It（F） is Corenstein if and only if the Stanley-Reisner simplicial complex of It（Г） is a matroid.

关键词： path ideals Cohen-Macaulay Gorenstein matroid fitting S-paxtitioned tree

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Pure-injectivity of Tensor Products of Modules （Dedicated with gratitude to Edgar E. Enochs, our teacher and friend）

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Algebra Colloquium 2014年第1期21卷 151-156页

作者： M.R. Pournaki B. Torrecillas M. Tousi S. Yassemi Department of Mathematical Sciences Sharif University of Technology P.O. Box 11155-9415 Tehran Iran School of Mathematics Institute for Research in Fbndamental Sciences (IPM) P.O. Box 19395-5746 Tehran Iran Department of Algebra and Mathematical Analysis University of Almeria 04071 Almeria Spain Department of Mathematics Shahid Beheshti University G.C. Evin Tehran 19834 Iran School of Mathematics Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5746 Tehran Iran School of Mathematics Statistics and Computer Science College of Science University of Tehran Tehran Iran

A classical question of Yoneda asks when the tensor product of two injective modules is injective. A complete answer to this question was given by Enochs and Jenda in 1991. In this paper the analogue question for pure... 详细信息

关键词： tensor product pure-injective module linearly compact module classicalring

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