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Angiosperm-wide analysis of fruit and ovary evolution aided by a new nuclear phylogeny supports association of the same ovary type with both dry and fleshy fruits

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Journal of Integrative Plant Biology 2024年第2期66卷 228-251页

作者： Yezi Xiang Taikui Zhang Yiyong Zhao Hongjin Dong Hongyi Chen Yi Hu Chien-Hsun Huang Jun Xiang Hong Ma State Key Laboratory of Genetic Engineering Ministry of Education Key Laboratory of Biodiversity and Ecological EngineeringInstitute of Plant BiologyCenter of Evolutionary BiologySchool of Life SciencesFudan UniversityShanghai 200438China department of Biology Howard Hughes Medical InstituteDuke UniversityDurhamNC 27708USA department of Biology the Eberly College of Scienceand the Huck Institutes of the Life Sciencesthe Pennsylvania State UniversityUniversity ParkPA 16802USA Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization College of Biology and Agricultural ResourcesHuanggang Normal UniversityHuanggang 438000China

Fruit functions in seed protection and dispersal and belongs to many dry and fleshy types,yet their evolutionary pattern remains unclear in part due to uncertainties in the phylogenetic relationships among several orders and *** we used nuclear genes of 502 angiosperm species representing 231 families to reconstruct a well supported phylogeny,with resolved relationships for orders and families with previously uncertain *** this phylogeny as a framework,molecular dating supports a Triassic origin of the crown angiosperms,followed by the emergence of most orders in the Jurassic and Cretaceous and their rise to ecological dominance during the Cretaceous Terrestrial *** robust phylogeny allowed an examination of the evolutionary pattern of fruit and ovary types,revealing a trend of parallel carpel fusions during early diversifications in eudicots,monocots,and ***,taxa in the same order or family with the same ovary type can develop either dry or fleshy fruits with strong correlations between specific types of dry and fleshy fruits;such associations of ovary,dry and fleshy fruits define several ovaryfruit"modules"each found in multiple *** of the frequent modules has an ovary containing multiple ovules,capsules and berries,and another with an ovary having one or two ovules,achenes(or other single-seeded dry fruits)and *** new perspective of relationships among fruit types highlights the closeness of specific dry and fleshy fruit types,such as capsule and berry,that develop from the same ovary type and belong to the same module relative to dry and fleshy fruits of other modules(such as achenes and drupes).Further analyses of gene families containing known genes for ovary and fruit development identified phylogenetic nodes with multiple gene duplications,supporting a possible role of whole-genome duplications,in combination with climate changes and animal behaviors,in angiosperm fruit and ovary diversificat

关键词： angiosperm fruit evolution MADS-box molecular clock nuclear phylogeny ovary and fruit developmental genes

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CSPP1 stabilizes microtubules by capping both plus and minus ends

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Journal of molecular Cell Biology 2024年第2期16卷 36-46页

作者： Zhikai Wang Wenwen Wang Shuaiyu Liu Fengrui Yang Xu Liu Shasha Hua Lĳuan Zhu Aoqing Xu Donald LHill Dongmei Wang Kai Jiang Jennifer Lippincott-Schwartz Xing Liu Xuebiao Yao MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics Center for Advanced Interdisciplinary Science and Biomedicine of IHMUniversity of Science and Technology of China School of Life SciencesHefei 230027China Anhui Key Laboratory for Cellular Dynamics and Chemical Biology Hefei National Research Center for Interdisciplinary Sciences at the MicroscaleHefei 230027China Frontier Science Center for Immunology and Metabolism Medical Research InstituteWuhan UniversityWuhan 430071China Comprehensive Cancer Center University of AlabamaBirminghamAL 35233USA Janelia Research Campus Howard Hughes Medical InstituteAshburnVA 20147USA

Although the dynamic instability of microtubules(MTs)is fundamental to many cellular functions,quiescent MTs with unattached free distal ends are commonly present and play important roles in various events to power cellular ***,how these free MT tips are stabilized remains poorly ***,we report that centrosome and spindle pole protein 1(CSPP1)caps and stabilizes both plus and minus ends of static ***-time imaging of laser-ablated MTs in live cells showed deposition of CSPP1 at the newly generated MT ends,whose dynamic instability was concomitantly ***,MT ends in CSPP1-overexpressing cells were hyper-stabilized,while those in CSPP1-depleted cells were much more *** CSPP1-elicited stabilization of MTs was demonstrated to be achieved by suppressing intrinsic MT catastrophe and restricting ***,CSPP1-bound MTs were resistant to mitotic centromere-associated kinesin-mediated *** findings delineate a previously uncharacterized CSPP1 activity that integrates MT end capping to orchestrate quiescent MTs.

关键词： CSPP1 microtubule plus end minus end capping

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CRISPR-Based Technologies for the Manipulation of Eukaryotic Genomes

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四川生理科学杂志 2024年第1期46卷 160-160页

作者： Alexis C Komor department of Chemistry and Chemical Biology Harvard University Cambridge MA 02138 USA Howard Hughes Medical Institute Harvard University Cambridge MA 02138 USA Broad Institute of MIT and Harvard Cambridge MA 02141 USA. department of Chemistry and Chemical Biology Harvard University Cambridge MA 02138 USA Howard Hughes Medical Institute Harvard University Cambridge MA 02138 USA Broad Institute of MIT and Harvard Cambridge MA 02141 USA. Electronic address: drliu@fas.harvard.edu.

The CRISPR-Cas9 RNA-guided DNA endonuclease has contributed to an explosion of advances in the life sciences that have grown from the ability to edit genomes within living *** this Review,we summarize CRISPR-based tec... 详细信息

关键词： CRISPR Cas9 Genome

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Stress response silencing by an E3 ligase mutated in neurodegeneration

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四川生理科学杂志 2024年第1期46卷 21-21页

作者： Diane L Haakonsen department of molecular and Cell Biology University of California at Berkeley Berkeley CA USA. Howard Hughes Medical Institute University of California at Berkeley Berkeley CA USA department of molecular and Cell Biology University of California at Berkeley Berkeley CA USA institute for Stem Cell Biology and Regenerative Medicine Stanford University School of Medicine Stanford CA USA. Department of Pathology Stanford University School of Medicine Stanford CA USA

Stress response pathways detect and alleviate adverse conditions to safeguard cell and tissue homeostasis,yet their prolonged activation induces apoptosis and disrupts organismal *** stress responses are turned off at the right time and place remains poorly *** we report a ubiquitin-dependent mechanism that silences the cellular response to mitochondrial protein import stress.

关键词： homeostasis silence turned

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Octopamine enhances learning

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National Science Review 2024年第06期 82-83页

作者： Yvette E.Fisher department of molecular and Cell Biology and Helen Wills Neuroscience institute University of California

Across the animal kingdom, diverse monoamines actuate and modulate neural circuit function. However, measuring the rapid dynamics of these neuromodulators at cellular resolution has historically presented significant ...

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Heat Shocking the Jedi Master: HSP90’s Role in Regulating Stomatal Cell Fate

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molecular Plant 2020年第4期13卷 536-538页

作者： Aarthi Putarjunan Keiko U.Torii howard hughes medical institute and department of molecular biosciences The University of Texas at AustinAustinTX 78712USA

Plant stomata facilitate efficient gas exchange and control water loss in plants throughout the course of their *** stomatal pores plants take in CO2 from the atmosphere for photosynthesis,resulting in O2 and H2O being released back into the atmosphere,which makes life on Earth ***,the density and distribution of stomata on the epidermis of photosynthetic organs are critical for overall plant growth and *** the rise in global warming and harsher climatic conditions that threaten food security for future generations,understanding how stomatal density and distribution can be altered may serve as a valuable tool for the generation of crops that can withstand the adverse environmental conditions such as drought,flooding,extremes in temperature,and excessive salinity(Endo and Torii,2019).Temperature fluctuations constitute a critical environmental factor affecting the spatiotemporal development of plants,and seasonal fluctuations in temperature can greatly influence crop yield and productivity of agriculturally important plant species.

关键词： distribution crops salinity

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The expanding amyloid family:Structure,stability,function,and pathogenesis

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四川生理科学杂志 2024年第1期46卷 106-106页

作者： Michael R Sawaya departments of Chemistry and Biochemistry and Biological Chemistry UCLA Los Angeles CA 90095 USA howard hughes medical institute UCLA Los Angeles CA 90095 USA UCLA-DOE institute UCLA Los Angeles CA 90095 USA molecular Biology institute UCLA Los Angeles CA 90095 USA Laboratory of Physical Chemistry ETH Zurich Vladimir Prelog Weg 2 CH-8093 Zurich Switzerland

The hidden world of amyloid biology has suddenly snapped into atomic-level focus,revealing over 80 amyloid protein fibrils,both pathogenic and *** globular proteins,amyloid proteins flatten and stack into unbranched *** still,a single protein sequence can adopt wildly different two-dimensional conformations,yielding distinct fibril polymorphs.

关键词： amyloid pathogenesis expanding

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Regulation of sister chromatid cohesion during the mitotic cell cycle

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Science China(Life Sciences) 2015年第11期58卷 1089-1098页

作者： ZHENG Ge YU HongTao howard hughes medical institute Department of Pharmacology University of Texas Southwestern Medical Center

Orderly execution of two critical events during the cell cycle––DNA replication and chromosome segregation––ensures the stable transmission of genetic materials. The cohesin complex physically connects sister chromatids during DNA replication in a process termed sister chromatid cohesion. Timely establishment and dissolution of sister chromatid cohesion is a prerequisite for accurate chromosome segregation, and is tight regulated by the cell cycle machinery and cohesin-associated proteins. In this review, we discuss recent progress in the molecular understanding of sister chromatid cohesion during the mitotic cell cycle.

关键词： cell cycle mitosis sister chromatid cohesion cohesin cohesin loading cohesin release DNA replication cohesion estab-lishment

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Chemical decaging in living systems

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National Science Review 2015年第3期2卷 250-251页

作者： Chuan He department of Chemistry and institute for Biophysical Dynamics Howard Hughes Medical Institute The University of Chicago College of Chemistry and molecular Engineering Peking University

General applicable tools for manipulation of biomolecule functions under living conditions are highly desired in the post-genomic *** chemistry has revolutionized our ability to label and visualize various biomolecules inside living cells[1].However,eforts have been traditionally focused on developing bioorthogonal conjugating reactions,which,in many cases,are limited for function investigations of many biomolecules and biological ***,Professor Peng Chen’s laboratory in the department of Chemical

关键词： Chemical decaging in living systems

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Computationally designed protein activation

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National Science Review 2019年第4期6卷 609-610页

作者： David Baker department of Biochemistry Institute for Protein Design University of Washington howard hughes medical institute

Time-resolved tools for activating proteins of interest in living systems can allow monitoring of the dynamics of biological processes such as signal transduction. Various approaches have been developed to engineer both constitutive and inducible protein activation (e.g. genetic fusion of light switchable proteins).Active-site decaging is another strategy,but the limited number of genetically encoded unnatural amino acids and associ-

关键词： pro Rosetta Computationally designed protein activation

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