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Animal Nutrition 2024年第1期16卷 147-157页

作者： Yingying Liu Yinglin Peng Chen Chen huibo ren Ji Zhu Yuan Deng Qingming Cui Xionggui Hu Jianhua He Huali Li Xinghui Zhu Yulong Yin Jun He Yi Xiao College of Animal Science and Technology Hunan Agricultural University Hunan Institute of Animal and Veterinary Science Key Laboratory of Conservation and Genetic Analysis of Local Pig Breed Germplasm Resources College of Information and Intelligence Hunan Agricultural University Institute of Subtropical Agriculture Chinese Academy of Sciences

This study evaluated the effects of flavonoids from mulberry leaves (FML) on plasma biochemical indices,serum activities of lipid metabolism-related enzymes,fat morphology,fatty acid composition,and lipid metabolism in different adipose tissues of finishing *** used 120 Chinese hybrid barrows of Berkshire and Bama mini-pigs with an average initial body weight of 45.11±4.23 *** pigs were randomly assigned to five treatment groups and fed a control diet based on corn,soybean meal,and wheat bran or a control diet supplemented with 0.02%,0.04%,0.08%,or 0.16%*** experimental group had six replicates (pens),with four pigs per *** a 7-d adaptation period,the feeding trial was conducted for 58 *** and adipose tissue samples were collected from 30 pigs (one pig per pen)at the end of the *** results showed that FML supplementation significantly decreased the feed intake to body gain ratio,the plasma concentrations of total cholesterol and free fatty acids,and the serum activity of 3-hydroxy-3-methylglutaryl coenzyme A reductase (linear or quadratic effects,Prent adipose *** findings suggest that FML improved growth performance,reg

关键词： Finishing pig Mulberry leaf Flavonoid Lipid metabolism Fatty acid Lard

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花瓣锥形表皮细胞形态建成研究进展

园艺学报 2024年第7期51卷 1695-1706页

作者：赵泽阳周雨晴林德书任慧波福建农林大学生命科学学院福州350002 福建农林大学海峡联合研究院基础林学与蛋白质组学研究中心福州350002

大多数被子植物花瓣近轴面的锥形表皮细胞可以通过影响花瓣的光吸收、光反射和疏水性使花拥有并保持对授粉昆虫的吸引力,还可以通过为授粉昆虫与花的接触提供“扶手”而提高授粉率。由于其重要的生物学功能和独特的形态,花瓣锥形表皮细... 详细信息

大多数被子植物花瓣近轴面的锥形表皮细胞可以通过影响花瓣的光吸收、光反射和疏水性使花拥有并保持对授粉昆虫的吸引力,还可以通过为授粉昆虫与花的接触提供“扶手”而提高授粉率。由于其重要的生物学功能和独特的形态,花瓣锥形表皮细胞被用作模式系统进行细胞形态建成调控机制的研究。本文中对花瓣锥形表皮细胞形态表型的分析方法进行说明,阐述MYB转录因子、TCP转录因子、锌指转录因子、生长素、周质微管的定向排列等在花瓣锥形表皮细胞形态建成中的作用和可能的调控机制,以期为园艺植物的遗传改良提供理论参考。

关键词：花瓣锥形表皮细胞转录因子生长素周质微管

PP2A interacts with KATANIN to promote microtubule organization and conical cell morphogenesis

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Journal of Integrative Plant Biology 2022年第8期64卷 1514-1530页

作者： huibo ren Jinqiu Rao Min Tang Yaxing Li Xie Dang Deshu Lin Basic Forestry and Proteomic Research Center Fujian Provincial Key Laboratory of Plant Functional BiologyKey Laboratory of Ministry of Education for GeneticsBreeding and Multiple Utilization of CropsFujian Agriculture and Forestry UniversityFuzhou 350002China Haixia Institute of Sciences and Technology Fujian Agriculture and Forestry UniversityFuzhou 350002China

The organization of the microtubule cytoskeleton is critical for cell and organ *** evolutionarily conserved microtubule-severing enzyme KATANIN plays critical roles in microtubule organization in the plant and animal *** previously used conical cell of Arabidopsis thaliana petals as a model system to investigate cortical microtubule organization and cell morphogenesis and determined that KATANIN promotes the formation of circumferential cortical microtubule arrays in conical ***,we demonstrate that the conserved protein phosphatase PP2A interacts with and dephosphorylates KATANIN to promote the formation of circumferential cortical microtubule arrays in conical *** undergoes cycles of phosphorylation and *** co-immunoprecipitation coupled with mass spectrometry,we identified PP2A subunits as KATANIN-interacting *** biochemical studies showed that PP2 A interacts with and dephosphorylates KATANIN to stabilize its cellular *** to the katanin mutant,mutants for genes encoding PP2A subunits showed disordered cortical microtubule arrays and defective conical cell *** together,these findings identify PP2A as a regulator of conical cell shape and suggest that PP2A mediates KATANIN phospho-regulation during plant cell morphogenesis.

关键词： conical cells cortical microtubules KATANIN morphogenesis phospho-regulation protein phosphatase PP2A

ROP GTPase-mediated auxin signaling regulates pavement cell interdigitation in Arabidopsis thaliana

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Journal of Integrative Plant Biology 2015年第1期57卷 31-39页

作者： Deshu Lin huibo ren Ying Fu Center for Genomics and Biotechnology Fujian Agriculture and Forestry University State Key Laboratory of Plant Physiology and Biochemistry College of Biological Sciences China Agricultural University

In multicellular plant organs, cell shape formation depends on molecular switches to transduce developmental or environmental signals and to coordinate cell-to-cell communi- cation. Plants have a specific subfamily of the Rho GTPase family, usually called Rho of Plants （ROP）, which serve as a critical signal transducer involved in many cellular processes. In the last decade, important advances in the ROP-mediated regulation of plant cell morphogenesis have been made by using Arubidopsis thaliana leaf and cotyledon pavement cells. Especially, the auxin-ROP signaling networks have been demonstrated to control interdigitated growth of pavement ceils to form jigsaw-puzzle shapes. Here, we review findingsrelated to the discovery of this novel auxin-signaling mecha- nism at the cell surface. This signaling pathway is to a large extent independent of the well-known Transport Inhibitor Response （TIR）-Auxin Signaling F-Box （AFB） pathway, and instead requires Auxin Binding Protein 1 （ABP1） interaction with the plasma membrane-localized, transmembrane kinase （TMK） receptor-like kinase to regulate ROP proteins. Once activated, ROP influences cytoskeletal organization and inhibits endocytosis of the auxin transporter PINt. The present review focuses on ROP signaling and its self-organizing feature allowing ROP proteins to serve as a bustling signal decoder and integrator for plant cell morphogenesis.

关键词： Auxin leaf pavement cell Rho of plants GTPase

Modulation of Root Signals in Relation to Stomatal Sensitivity to Root-sourced Abscisic Acid in Drought-affected Plants

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Journal of Integrative Plant Biology 2007年第10期49卷 1410-1420页

作者： huibo ren Kaifa Wei Wensuo Jia William John Davies Jianhua Zhang College of Agronomy and Biotechnology State Key Laboratory of Plat Physiology and Biochemistry China Agricultural UniversityBeijing China100094 Department of Biological Sciences Lancaster Environment Centre University of Lancaster Lancaster LAl4YQ.UK Department of Biology Hong Kong Baptist University Kowloon Tong Hong Kong China

Stomatal sensitivity to root signals induced by soil drying may vary between environments and plant species. This is likely to be a result of the interactions and modulations ámong root signals. As a stress signal, abscisic acid （ABA） plays a central role in root to shoot signaling, pH and hydraulic signals may interact with ABA signals and thus, jointly regulate stomatal responses to changed soil water status, pH itself can be modified by several factors, among which the chemical compositions in the xylem stream and the live cells surrounding the vessels play crucial roles. In addition to the xylem pH, more attention should be paid to the direct modulation of leaf apoplastic pH, because many chemical compositions might strongly modify the leaf apoplastic pH while having no significant effect on the xylem pH. The direct modulation of the ABA signal intensity may be more important for the regulation of stomatal responses to soil drying than the ABA signal per se. The ABA signal is also regulated by the ABA catabolism and the supply of precursors to the roots if a sustained root to shoot communication of soil drying operates at the whole plant level. More importantly, ABA catabolism could play crucial roles in the determination of the fate of the ABA signal and thereby control the stomatal behavior of the root-sourced ABA signal.

关键词： abscisic acid drought pH root signal stomatal sensitivity

Roles of a sustained activation of NCED3 and the synergistic regulation of ABA biosynthesis and catabolism in ABA signal production in Arabidopsis

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Chinese Science Bulletin 2007年第4期52卷 484-491页

作者： ren huibo FAN YiJian GAO ZhiHui WEI KaiFa LI GuiFen LIU Jing CHEN Lin LI BingBing HU JianFang JIA WenSuo State Key Laboratory of Plant Biochemistry College of Agronomy and Biotechnology China Agricultural University Beijing 100094 China

ABA, acting as a stress signal, plays crucial roles in plant resistance to water stress. Because ABA signal production is based on ABA biosynthesis, the regulation of NCED, a key enzyme in the ABA biosynthesis pathway, is normally thought of as the sole factor controlling ABA signal production. Here we demonstrate that ABA catabolism in combination with a synergistic regulation of ABA biosynthesis plays a crucial role in governing ABA signal production. Water stress induced a significant accumulation of ABA, which exhibited different patterns in detached and attached leaves. ABA catabolism followed a temporal trend of exponential decay for both basic and stress ABA, and there was little difference in the catabolic half-lives of basic ABA and stress ABA. Thus, the absolute rate of ABA catabolism, i.e. the amount of ABA catabolized per unit time, increases with increased ABA accumulation. From the dynamic processes of ABA biosynthesis and catabolism, it can be inferred that stress ABA accumulation may be governed by a synergistic regulation of all the steps in the ABA biosynthesis pathway. Moreover, to maintain an elevated level of stress ABA sustained activation of NCED3 should be required. This inference was supported by further findings that the genes encoding major enzymes in the ABA biosynthesis pathway, e.g. NCED3, AAO3 and ABA3 were all activated by water stress, and with ABA accumulation progressing, the expressions of NCED3, AAO3 and ABA3 remained activated. Data on ABA catabolism and gene expression jointly indicate that ABA signal production is controlled by a sustained activation of NCED3 and the synergistic regulation of ABA biosynthesis and catabolism.

关键词：拟南芥 ABA信号 ABA生物合成分解代谢协同调节 NCED3 持续致活水胁迫干旱

Leaf Morphology Genes SRL1 and renL1 Co-Regulate Cellulose Synthesis and Affect Rice Drought Tolerance

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Rice science 2024年第1期31卷 103-117,I0020-I0022页

作者： LIU Dan ZHAO huibo WANG Zi’an XU Jing LIU Yiting WANG Jiajia CHEN Minmin LIU Xiong ZHANG Zhihai CEN Jiangsu ZHU Li HU Jiang ren Deyong GAO Zhenyu DONG Guojun ZHANG Qiang SHEN Lan LI Qing QIAN Qian HU Songping ZHANG Guangheng State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China Research Center of Plant Functional Genes and Tissue Culture Technology College of Bioscience and BioengineeringJiangxi Agricultural UniversityNanchang 330045China Qian Qian Academician Workstation National Nanfan Research Institute(Sanya)Chinese Academy of Agricultural SciencesSanya 572024China

The morphological development of rice(Oryza sativa L.)leaves is closely related to plant architecture,physiological activities,and ***,it is unclear whether there is a co-regulatory relationship between the morphological development of leaves and adaptation to drought *** this study,a drought-sensitive,roll-enhanced,and narrow-leaf mutant(renl1)was induced from a semi-rolled leaf mutant(srl1)by ethyl methane sulfonate(EMS),which was obtained from Nipponbare(NPB)through ***-based cloning and functional validation showed that renL1 encodes a cellulose synthase,allelic to NRL1/*** renL1 mutation resulted in reduced vascular bundles,vesicular cells,cellulose,and hemicellulose contents in cell walls,diminishing the water-holding capacity of *** addition,the root system of the renl1 mutant was poorly developed and its ability to scavenge reactive oxygen species(ROS)was decreased,leading to an increase in ROS after drought ***,genetic results showed that renL1 and SRL1 synergistically regulated cell wall *** results revealed a theoretical basis for further elucidating the molecular regulation mechanism of cellulose on rice drought tolerance,and provided a new genetic resource for enhancing the synergistic regulation network of plant type and stress resistance,thereby realizing simultaneous improvement of multiple traits in rice.

关键词： cellulose cell wall drought tolerance leaf morphology rice

Spatio-temporal orientation ofmicrotubulescontrols conical cell shape in Arabidopsis thaliana petals

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Spatio-temporal orientation ofmicrotubulescontrols conical c...

SPIKE1 activates ROP GTPase signaling to modulate petal growth and shape in Arabidopsis thaliana

2018全国植物生物学大会

作者： Xie Dang huibo ren Deshu Lin College of Life Science Haixia Institute of Science and TechnologyFujian Agriculture and ForestryUniversity

The physiological functions of epidermal cells are largely determined by their diverse *** flowering plants have special conical-shaped petal epidermal cells that arethought to influence light capture and reflectance,and provide pollinator grips,but themolecular mechanisms controlling conical cell shape remain largely ***,wedeveloped a live-confocal imaging approach to quantify geometric parameters of conicalcells in Arabidopsis *** genetic screens,we identified katanin(KTN1) mutants showing a phenotype of decreased tip sharpening of conical *** more,we demonstrated that SPIKE1 and Rho of Plants(ROP) GTPases were required forthe final shape formation of conical cells,as KTN1 ***-cell imaging showed that wild type cells exhibited random orientation of cortical microtubule arrays at early developmentalstages but displayed a well-ordered circumferential orientation of microtubule arrays at *** contrast,loss of KTN1 prevented random microtubule networks from shifting intowell-ordered *** further showed that the filamentous actin cap,which is a typical feature of several plant epidermal cell types including root hairs and leaf trichomes,was notobserved in the growth apexes of conical cells during cell ***,ourgenetic and pharmacological data suggested that microtubules but not actin are required forconical cell ***,our results provide a novel imaging approach for studyingpetal conical cell morphogenesis and suggest that the spatio-temporal organization ofmicrotubule arrays plays crucial roles in controlling conical cell shape.

关键词： KTN1 ROP GTPase petal conical cell microtubules

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SPIKE1 activates ROP GTPase signaling to modulate petal grow...

Photooligomerization Determines Photosensitivity and Photoreactivity of Plant Cryptochromes

2016年全国植物生物学大会

作者： huibo ren Xie Dang Deshu Lin Haixia Institute of Science and Technology Fujian Agriculture and Forestry University

The diverse morphological features displayed by plants,including shape and size of organs are regulated by the polarity and extension events of specially endowed cells. However,information regarding the functional proteins involved in the regulation of petal shape has not been extensively elucidated. Here,we investigate the mechanism that determines petal shape formation in Arabidopsis thaliana owing to its relatively short life span and structure simplicity. Current evidence showed that in Plants Rho(ROP) which is a kind of small GTPase protein that regulates the organization of cortical microtubules and vesicle trafficking under direct SPIKE1 activation,SPIKE1 belongs to DOCK family of proteins encoding a guanine nucleotide exchange factor(GEF). In this study,we respectively identified the interaction of SPIKE1 with ROP2 and ROP6 in our pull-down assays in vitro. Furthermore,analysis of rop2,rop6,rop2rop6 and rop2rop4irop6 mutants generated in this study exhibited lesser incidence of zigzag coupled with a reduction in the size of petal abaxial cell simultaneously,suggests ROP2,ROP4 and ROP6 synergistically modulate the development of petal shape,also,more transversely ordering microtubules were observed in late petal cells. More so,all the phenotypic characteristics observed in rop2rop4irop6 could be mirrored in spk1-4 point mutants. In conformity with these results,we posited that,ROP2,ROP4 and ROP6 activated by SPIKE1 and functions synergistically in modulating petal cell elongation and polarity in tandem with microtubules orientation and thus,influence growth and morphological development in Arabidopsis thaliana.

关键词： ROP GTPase SPIKE1 petal shape microtubules Arabidopsis

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Molecular Plant 2020年第3期13卷 398-413页

作者： Qing Liu Tiantian Su Wenjin He huibo ren Siyuan Liu Yadi Chen Lin Gao Xiaohua Hu Haoyue Lu Shijiang Cao Ying Huang Xu Wang Qin Wang Chentao Lin Basic Forestry and Proteomics Research Center UCLA-FAFU Joint Research Center on Plant ProteomicsCollege of Life SciencesFujian Agriculture and Forestry UniversityFuzhou 350002China Department of Molecular Cell&Developmental BiologyUniversity of CaliforniaLos AngelesCA 90095USA College of Life Sciences Fujian Normal UniversityFuzhou 350108China College of Forestry Fujian Agriculture and Forestry UniversityFuzhou 350002China These authors contributed equally to this article.

Plant and non-plant species possess cryptochrome(CRY)photoreceptors to mediate blue light regulation of development or the circadian *** blue light-dependent homooligomerization of Arabidopsis CRY2 is a known early photoreaction necessary for its functions,but the photobiochemistry and function of light-dependent homooligomerization and heterooligomerization of cryptochromes,collectively referred to as CRY photooligomerization,have not been well ***,we show that photooligomerization is an evolutionarily conserved photoreaction characteristic of CRY photoreceptors in plants and some non-plant *** analyses of the kinetics of the forward and reverse reactions of photooligomerization of Arabidopsis CRY1 and CRY2 provide a previously unrecognized mechanism underlying the different photosensitivity and photoreactivity of these two closely related *** found that photooligomerization is necessary but not sufficient for the functions of CRY2,implying that CRY photooligomerization is presumably accompanied by additional function-empowering conformational *** further demonstrated that the CRY2-CRY1 heterooligomerization plays roles in regulating functions of Arabidopsis CRYs in *** together,these results suggest that photooligomerization is an evolutionarily conserved mechanism determining the photosensitivity and photoreactivity of plant CRYs.

关键词： light signaling photomorphogenesis cryptochrome,oligomerization