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1笋芽顶端分生组织在竹秆横切面形态形成中的作用与机制研究显示文摘竹秆的横切面主要由表皮、皮层、维管组织、基本组织及髓腔(早期为髓组织)组成。这些组织均由笋芽茎顶端分生组织分化发育而来,且其在生长发育过程中促使了竹秆横切面形态(本文特指:竹秆横切面外轮廓形状、围度及壁-腔结构)的形成。然而,人们对于这一生长发育过程的生物学机制知之甚少。本研究利用解剖学、数学模拟等方法,对 20 种具不同秆径竹种的笋芽顶端分生组织进行了分析。研究结果发现,笋芽顶端分生组织指状形态的维持是竹子产生圆柱形竹秆的基础;在顶端分生组织细胞数目增加的同时,线性增加原体细胞数目应是竹子在演化过程中产生大径竹秆且保持规则壁-腔结构的方式。进一步通过研究一个竹壁增厚且壁-腔架构紊乱的稳定变异体———实肚竹( Phyllostachys nidularia f. farcta)发现,其笋芽顶端分生组织细胞数目减少且原体/原套细胞数比值降低使其产生了高比例的壁组分组织(指基本分生组织与肋状分生组织)与低比例的髓组织。上述 2 种组织的比例失衡,使得实肚竹笋芽在后续发育中壁组分组织随机挤入到了髓组织中,最终形成了实肚竹异常的竹秆横切面形态(竹壁多样化增厚且壁-腔结构紊乱)。此外,相对较小的顶端分生组织,使得实肚竹笋芽产生了较少的内源激素,如其生长素含量仅约为其原种篌竹的 67. 5%,各细胞分裂素含量也显著低于篌竹笋芽。转录组分析进一步发现,在实肚竹笋芽中与激素及代谢相关的功能基因呈显著下调表达。这些生理与分子变化最终导致了实肚竹竹秆矮化、秆径减小且生物量降低。本论文的研究结果为研究竹秆横切面发育提供了一个重要的视角,同时也为实肚竹厚壁茎秆的形成提出了一个合理的机制。Wang Y Sun X Ding Y Fei Z Jiao C Fan M Yao B Xin P Chu J Wei Q 王雨珺 魏强 2019世界竹藤通讯2019,17,3:5
2Brassica rapa plants adapted to microgravity with reduced photosystem I and its photochemical activity显示文摘 E Hilaire A Q Paulsen 2004Physiologia plantarum2004,122,2:1
3A nonlinear dynamical model of landslide evolution显示文摘QIN S Q JIAO J J WANG S J 2002Geomorphology2002,43,12:1
4Induction of muhispecific Th-1 type immune response against HCV in mice by protein immunization using CpG and montanide ISA 720 as adjuvants 显示文摘Qiu Q Wang R Y Jiao X 2008Vaccine2008,26,43:1
5Investigation on the binging site in heparin by spectrophometry显示文摘Jiao QC Liu Q Sun C 1999Talanta1999,48,:1
6Comparative study of photodynamic therapy with 5%,10% and 20% aminolevulinic acid in the treatment of generalized recalcitrant facial verruca plana:a randomized clinical trial显示文摘Li Q Jiao B Zhou F 2013J Eur Acad Dermatol Venereol2013,25,:1
7Towards high value-added products and services:Mass Customization and beyond 显示文摘JIAO J MA Q M TSENG M 2003Technovation2003,23,10:1
8Isolation and characterization of a genetically tractable photo autotrophic Fe(Ⅱ)-oxidizing bacterium, Rhodopseudomonaspalustris strain TIE-1显示文摘Jiao Y Q Kappler A Croal L R 2005Applied and Environmental Microbiology2005,71,8:1
9Photosynthetic characteristics and tolerance to photooxidation of transgenic rice expressing C4 photosyn- thesis enzymes 显示文摘Jiao D M Huang X Q Li X 2002Photosynthesis Research2002,72,:1
10Modification of degradation behavior of magnesium alloy by IBAD coating of calcium phosphate 显示文摘YANG J X JIAO Y P CUI F Z LEE I S Y1N Q S ZHANG Y 2008Surface and Coatings Technology2008,202,22:1
11Mechanism of interference and azur response in the heparin assay显示文摘Jiao QC Liu Q 1998Anal lett1998,31,8:1
12Structure and electrochemical properties of ball-milled Co-carbon nanotube composites as negative electrode material of alkaline rechargeable batteries显示文摘DU H JIAO L WANG Q 0,,:1
13Microwave-assisted aqueous enzymatic extraction of oil from Isatis indigotica seeds and its evaluation of physicochemical properties,fatty acid compositions and antioxidant activities显示文摘GAI Q Y JIAO J MU P S 2013Industrial Crops and Products2013,45,:1
14Synthesis and luminescent properties of complexes of Eu (Ⅲ) with 2-thienyltfifluoroacetonate, terephthalic acid and phenanthro- line 显示文摘Zhao X H Huanga K L Jiao F P Liu S Q Liu Z G Hu S Q 2007Journal of Physics and Chemistry of Solids2007,68,:1
15Acta Materialia显示文摘Wei Q Jiao T Ramesh K T 200654(1): 772006,54,1:1
16Co2P: A facile solid state synthesis and its applications in alkalinerechargeable batteries 显示文摘PENG W X JIAO L F HUAN Q N LI L YANG J Q ZHAO Q Q WANG Q H DU H M L|U G SI Y C WANG Y J YUAN H T 2012J Alloys Compd2012,511,:1
17Minimally invasive treatment for severely displaced proximal humeral fractures in children using titanium elastic nails显示文摘Xie F Wang S Jiao Q 2011J Pediatr Orthop2011,31,8:1
18Pediatric tuberculosis at Beijing Children's Hospital:2002-2010显示文摘WU X R YIN Q Q JIAO A X 0,,06:1
19Occupational solvent exposure,genetic variation of DNA repair genes,and the risk of non-Hodgkin's lymphoma显示文摘Jiao J Zheng T Lan Q 0,,:1
20Electrode influence on effective electromechanical coupling coefficient of thin film bulk acoustic resonators显示文摘ZHANG R JIAO X Q YANG J 2014Mater Res Innov2014,18,4:1
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