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Dissertations / Theses on the topic 'Pollen tube tip growth'

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Published: 4 June 2021

Last updated: 3 February 2022

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1

Shuraki, Yahya Dehghani. "Pollen tube growth and fruit development of Pistacia." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phs5618.pdf.

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Copy of author's previously published article inserted. Bibliography: leaves 127-154. Pollination and fruit development were investigated in relation to abscission and abnormalities, specifically, blanking, semi-blanking, non-splitting and premature splitting of fruit. Pollen germination was assessed in Pistacia vera, P. atlantica and P. terebinthus. The pollen tube pathway in pistachio was documented precisely. Growth periods of normal and abnormal pistachio fruits were investigated.

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2

Guo, Feng. "Investigation into the functions of the pollen specific genes PiVAMP721 and PiSCP1 in pollen tube growth." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Dissertations/Fall2008/F_Guo_112608.pdf.

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3

au, Lynleys@calm wa gov, and Lynley M. Stone. "Floral Biology and Propagation of Blue-Flowered Conospermum Spp." Murdoch University, 2003. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20040824.145625.

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Blue-flowered Conospermum are endemic to Western Australia, and show great potential as cut flowers. Propagation from cuttings or seed proved difficult, and root initiation in vitro is problematic. This thesis examines the floral biology of the species and the possibility of using somatic embryogenesis to overcome propagation problems. A survey of explant tissue types for C. eatoniae and C. caeruleum was carried out to identify tissue that could be induced into embryogenic pathways. Vegetative, semi-floral and floral buds were initiated into culture from February to June, but were found

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4

Riglet, Lucie. "How stigmatic epidermis mediates the invading cell growth : the case of pollen tube and oomycete hypha." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEN058/document.

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Chez les plantes à fleurs, la communication entre les grains de pollen et les cellules épidermiques du stigmate, aussi appelées papilles, est cruciale pour le succès de la reproduction. Lorsqu’il est accepté, le grain de pollen germe et émet un tube pollinique qui transporte les gamètes mâles jusqu’aux ovules. La rencontre et la fusion entre les gamètes mâles et femelles reposent par conséquent sur la bonne trajectoire des tubes polliniques lors de leur progression dans les différents tissus du partenaire femelle pour atteindre les ovules. Les tubes polliniques croissent dans la paroi cellulai

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5

Kakani, Vijaya Gopal. "Quantifying the effects of high temperature and water stress in groundnut (Arachis hypogaea L.)." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342143.

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6

松田, 大志. "温度がチェリモヤの生殖器官に及ぼす影響". Kyoto University, 2015. http://hdl.handle.net/2433/199535.

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7

Matsuda, Hiroshi. "Effects of Temperature on Cherimoya Reproductive Organs." Kyoto University, 2015. http://hdl.handle.net/2433/199367.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第19043号<br>農博第2121号<br>新制||農||1032(附属図書館)<br>学位論文||H27||N4925(農学部図書室)<br>31994<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授縄田栄治, 教授田中千尋, 教授北島宣<br>学位規則第4条第1項該当

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8

Gebert, Marina. "The gametophyte specific ARM repeat protein AtARO1 is required for actin dynamics in Arabidopsis during pollen tube growth and double fertilization." kostenfrei, 2008. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/1072/.

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9

Daniels, Jesse. "Direct and indirect effects of invasive Cirsium arvense on pollination in Southern Appalachian floral communities." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/124.

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To date, 13168 plant species have been naturalized outside their native range. While invasive plants efficiently compete for resources, they can also disrupt vital mutualisms. Pollination is a crucial mutualism required for 87% of flowering plants to reproduce. Invasive species may disrupt patterns of pollinator visitation, pollen transfer dynamics (conspecific [CP] and heterospecific [HP]), and reproductive success. Furthermore, whether invasive species’ effects depend on scale (site vs. patch) is not known. Thus, it is critical to understand the effects of invasive plants at all stages of po

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10

DeLong, Candace Nicole. "Pollen Tube Growth Characteristics of Selected Crabapple Cultivars and Managing Apple (Malus x domestica) Crop Load and Early Season Diseases with Organic Bloom Thinning Chemicals." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/64852.

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Reducing apple (Malus x domestica Borkh.) crop load during bloom is a reliable option for increasing fruit quality and return bloom. In this thesis, multiple approaches to improving bloom thinning practices are discussed. The first project analyzed the pollen tube growth of several crabapple cultivars. Previous research had improved the use of bloom thinning chemicals, by coordinating the application timing with the pollen tube growth between pollination and fertilization. However, pollen tube growth rates have only been measured in a few genotypes. In Chapter 2, the pollen tube growth rates o

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11

Bergonci, Tábata. "Peptídeos RALF em tecido reprodutivo: caracterização e efeito dos AtRALF4, 25, 26 e 34." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-03102016-175937/.

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Pequenos peptídeos são importantes sinalizadores celulares e estão envolvidos na comunicação célula-a-célula em diversos aspectos do desenvolvimento da planta. Durante a reprodução sexual, moléculas sinalizadoras atuam na interação entre o gametófito feminino e o masculino, controlando processos como germinação do grão de pólen, alongamento do tubo polínico e liberação das células espermáticas, entre outros. RALF é um peptídeo de sinalização codificado por genes de expressão ubíqua ou tecido-especifica e que regulam negativamente a expansão celular. Em arabidopsis, peptídeos AtRALFs podem ser

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12

Ghanem, Ghofran. "Ausprägung wichtiger Eigenschaften für die generative Vermehrung einer gartenbaulichen Modell-Kultur unter dem Einfluss von Genotyp und Umwelt." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2011. http://dx.doi.org/10.18452/16409.

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Die vorliegende Arbeit prüft bei der gärtnerischen Modell-Kultur Cyclamen den Einfluss des Genotyps (interspezifische Hybriden) auf generative Merkmale sowie bei C. persicum `Melody´ den Einfluss von Kultivierungsmaßnahmen wie die Besiedelung der Wurzeln durch einen symbiontischen Pilz (Piriformospora indica) in Kombination mit einem differenzierten Phosphor-Angebot auf vegetative und generative Merkmale: (1) Pflanzendurchmesser, (2) Blühzeitpunkt und Blütenanzahl, (3) Anzahl Samenanlagen pro Fruchtknoten, (4) Vitalität von Pollen und Samenanlagen, (5) Mikrosporogenese, (6) Befruchtungsvorgan

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13

Ischebeck, Till. "Distinct roles of PI4P 5-kinase isoforms in polar tip growth of pollen tubes." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-AD67-4.

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14

Ischebeck, Till [Verfasser]. "Distinct roles of PI4P 5-kinase isoforms in polar tip growth of pollen tubes / vorgelegt von Till Ischebeck." 2008. http://d-nb.info/997939427/34.

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15

Niroomand, Shahriar. "Functional Characterization of Arabidopsis Formin Homologues Afh1, Afh5, Afh6, Afh7 and Afh8." 2010. https://scholarworks.umass.edu/theses/525.

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Dynamic actin remodeling is at the core of a number of fundamental cellular processes in a variety of organisms ranging from animal neuronal outgrowth to pollen tube growth during plant reproduction and asymmetrical cell division in budding yeast. Such dynamism results from a concerted effort of a number of temporally and spatially regulated actin binding proteins. The polymerization and depolymerization of elaborate F-actin networks takes place by the addition and removal of actin subunits at the two filament ends with each end possessing distinct properties, making the filaments themselves p

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16

Bou, Daher Firas. "Actin cytoskeleton regulates pollen tube growth and tropism." Thèse, 2011. http://hdl.handle.net/1866/5175.

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La fertilisation chez les plantes dépend de la livraison des cellules spermatiques contenues dans le pollen à l’ovule. Au contact du stigmate, le grain de pollen s’hydrate et forme une protubérance, le tube pollinique, chargé de livrer les noyaux spermatiques à l’ovule. Le tube pollinique est une cellule à croissance rapide, anisotrope et non autotrophe; ainsi tout au long de sa croissance à travers l’apoplaste du tissu pistillaire, le tube pollinique puise ses sources de carbohydrates et de minéraux du pistil. Ces éléments servent à la synthèse des constituants de la paroi qui seront achemin

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17

Dowd, Peter E. "The role of phospholipase C in pollen tube growth." 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1619/index.html.

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18

Ghanbari, Mardasi Mahmood. "Lab-On-Chip for Ex-Vivo study of morphogenesis of tip growing cells of pollen tube." Thesis, 2014. http://spectrum.library.concordia.ca/978572/1/Ghanbari_Mardasi_PhD_S2014.pdf.

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The purpose of the thesis is to develop a microfluidic based lab-on-chip (LOC) platform providing an Ex-Vivotesting environment that is able to mimic certain aspects of the in vivo growth conditions of the pollen tube, a cellular protuberance formed by the male gametophyte in the flowering plants. The thesis focuses on design, fabrication, modeling and testing of various LOC devices for the study of static and dynamic behavior of pollen tubes in response to mechanical stimulation. TipChip, an LOC platform, was developed to advance both experimentation and phenotyping in cell tip growth resea

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19

Miller, Deborah Denise. "The role of calcium and myosin in Lilium longiflorum pollen tube growth." 1995. https://scholarworks.umass.edu/dissertations/AAI9606543.

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Fluorescent ratiometric imaging of Lilium longiflorum pollen tubes loaded with the Ca$\sp{2+}$ indicator fura-2 dextran has revealed a tip-focused gradient of free intracellular calcium ions in actively growing pollen tubes which extends from above 3.0 $\mu$M at the apex to a uniform basal level of $\sim$0.2 $\mu$M within 20 $\mu$m from the tip. Application of the Ca$\sp{2+}$ specific vibrating electrode revealed a tip-directed extracellular Ca$\sp{2+}$ influx between 1.4 and 14 pmol cm$\sp{-2}$ sec$\sp{-1}$. The relationship between these phenomena and their role in tube growth was examined u

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20

Chen, Christine Yeihua. "Functional analysis of actin depolymerizing factor (ADF) in Rac -mediated pollen tube growth." 2002. https://scholarworks.umass.edu/dissertations/AAI3056368.

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Pollen tube elongation is a polarized cell growth process that directionally transports the male gametes from the stigma to the ovary for fertilization inside the ovules. Actin cytoskeleton is known to support this growth process and Rac-like GTPases have been shown recently to be important to regulate actin organization in elongating pollen tubes. Actin depolymerizing factor/cofilins (ADF/cofilins) are actinbinding proteins that increase actin dynamics by enhancing actin depolymerization. They are also responsible to regulate actin organization in Rac-mediated signaling. My thesis research fo

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21

Lovy-Wheeler, Alenka. "Actin organization and activity in lily pollen tube growth: A role for pH." 2006. https://scholarworks.umass.edu/dissertations/AAI3216956.

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The function of a lily pollen tube is to elongate down the style of a lily flower and deliver its sperm cells to the ovule to complete the process of double fertilization. This highly polarized growth process relies on the arrangement and dynamic activity of the actin cytoskeleton. This dissertation will focus on the structure of the actin cytoskeleton in lily pollen tubes, pH dynamics and their effect on growth, pH effects on actin, and actin activity as gleaned from the analysis of organelle movements. Chapter 2 reveals that lily pollen tubes posses a cortical actin fringe in their apical do

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22

Wang, Min-Long, and 王明隆. "Characterization of Genes Involved in Pollen Germination and Tube Growth in Lily Plants." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/31009685695250977672.

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碩士<br>國立中興大學<br>農業生物科技學研究所<br>89<br>The normal germination of pollen tube is essential for successful double fertilization during plant sexual reproduction. As worked on the lily (Lilium lotigiflorhim Thunb. cv Avita) pollen tube germination, one interesting phenomenon was observed. Pollen grains stored at -20˚C for certain periods would delay their germination and growth rates in the first two hours during in vitro culture. Once they germinated, there was no difference in germination and growth rates as compared to the fresh-collected pollen grains. It has been documented that a lot of protei

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23

Naghavi, Mahsa. "Studying the cytomechanic aspects of pollen tube growth behavior using Lab-On-Chip technology." Thèse, 2014. http://hdl.handle.net/1866/11529.

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L'élongation cellulaire de cellules cultivant bout comme hyphae fongueux, inculquez hairs, des tubes de pollen et des neurones, est limité au bout de la cellule, qui permet à ces cellules d'envahir l'encerclement substrate et atteindre une cible. Les cellules cultivant bout d'équipement sont entourées par le mur polysaccharide rigide qui régule la croissance et l'élongation de ces cellules, un mécanisme qui est radicalement différent des cellules non-walled. La compréhension du règlement du mur de cellule les propriétés mécaniques dans le contrôle de la croissance et du fonctionnement cellulai

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24

Rato, Claudia. "Regulation of pollen tube growth by calmodulin, cyclic nucleotides and cyclic nucleotide-gated channels." Doctoral thesis, 2007. http://sibul.reitoria.ul.pt/F/?func=item-global&doc_library=ULB01&type=03&doc_number=000511486.

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Tese de doutoramento em Biologia (Biologia Celular), apresentada à Universidade de Lisboa através da Faculdade de Ciências, 2007<br>Pollen tube growth plays an essential role in fertilization of flowering plants. Several signalling pathways were identified during pollen tube growth, including Ca2+, CaM and 3',5'-cyclic adenosine monophosphate (cAMP). These constitute a complex web of signalling networks that intersect at various levels (reviewed in Chapter I). In order to elucidate the role of CaM we mapped its activity in growing pollen tubes. We found that CaM activity exhibits a tip-focused

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25

Bartek, Matthew Scott. "Survey for Intergeneric Pollen Tube Growth in Intergeneric Pollinations Utilizing the iap Allele in Sorghum bicolor." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8740.

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Hybridization within Sorghum bicolor (L.) Moench has been the primary means of creating genetic diversity needed for sorghum crop improvement. While significant variation exists within S. bicolor, there are several traits that can be improved and potential opportunities to improve S. bicolor if secondary and tertiary germplasm pools could be accessed. Recently, the discovery of the iap (Inhibition of Alien Pollen) mutant and its introgression into more breeding-amenable genetic background has facilitated the development of S. bicolor germplasm with genetic diversity not previously seen within

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26

He, Siou-Luan, and 何秀鑾. "Mutation of Arabidopsis SAURs impairs the efficient translation of transcripts essential for pollen tube growth." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/hw85j9.

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博士<br>國立臺灣大學<br>植物科學研究所<br>106<br>Successful pollen tube elongation is critical for double fertilization. Understanding the biological functions of pollen tube genes will provide new insights into the regulatory machinery underlying this crucial process. Previous translatomic study revealed two Arabidopsis Small Auxin Up RNA genes, SAUR62 and SAUR75, with expression upregulated by pollination. Both SAUR62 and SAUR75 mainly localized in pollen tube nuclei, and siliques of homozygous saur62 (saur62/-), saur75 (saur75/-), and the SAUR62/75 RNAi knockdown line had many aborted seeds. Pollen viabil

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27

Chebli, Youssef. "Cell wall composition regulates cell shape and growth behaviour in pollen tubes." Thèse, 2012. http://hdl.handle.net/1866/8988.

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L’une des particularités fondamentales caractérisant les cellules végétales des cellules animales est la présence de la paroi cellulaire entourant le protoplaste. La paroi cellulaire joue un rôle primordial dans (1) la protection du protoplaste, (2) est impliquée dans les mécanismes de filtration et (3) est le lieu de maintes réactions biochimiques nécessaires à la régulation du métabolisme et des propriétés mécaniques de la cellule. Les propriétés locales d’élasticité, d’extensibilité, de plasticité et de dureté des composants pariétaux déterminent la géométrie et la forme des cellules lors d

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28

Taylor, Mackenzie Lorraine. "Developmental Evolution of the Progamic Phase in Nymphaeales." 2011. http://trace.tennessee.edu/utk_graddiss/1031.

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The period between pollination and fertilization, or the progamic phase, is a critical life history stage in seed plants and innovations in this life history stage are hypothesized to have played an important role in the diversification of flowering plants. Over the course of this dissertation research, I investigated programic phase development in Nymphaeales (water lilies), an ancient angiosperm lineage that diverged from the basalmost or next most basal node of the angiosperm phylogenetic tree and that is represented in the oldest angiosperm fossil record. I used field experiments and micro

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29

Hsu, Ssu-Wei, and 徐思維. "The analysis for molecular regulation of three specific genes involved in the lily anther development and pollen germination and tube growth." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29884778887838275765.

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博士<br>國立中興大學<br>生物科技學研究所<br>98<br>Here, we report unique desiccation-associated abscisic acid (ABA) signaling transduction through which the Rop (Rho GTPase of plants) gene is regulated during the stage of pollen maturation. Accumulation of the LLP-Rop1 transcript decreased its level of accumulation while LLP-12-2, a Rop-interactive CRIB motif-containing (RIC) transcript increased either by premature drying of developing anther/pollen or by the exogenous application of various concentrations of ABA during pollen maturation and tube growth. Application of norflurazon, an ABA biosynthesis inhibi

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30

Kita, Daniel W. "Feronia: A malectin-like domain-containing receptor kinase in Arabidopsis thaliana insights into polarized cell growth, pollen tube - Pistil interactions, and sugar signaling." 2013. https://scholarworks.umass.edu/dissertations/AAI3556261.

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RAC/ROPs are a unique group of RAS-related monomeric G proteins (small G proteins) that constitute the sole family of Rho GTPases in plants. RAC/ROPs, like their counterpart Rho GTPases from mammalian and fungal systems, can interconvert between an active GTP and an inactive GDP bound state. These powerful signaling molecules lie upstream in many diverse signal transduction pathways. Their controlled regulation is critical to overall plant fitness, growth, development, and responses to abiotic and biotic stress. RAC/ROP activation is regulated by guanine nucleotide exchange factors (GEFs). The

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31

Gebert, Marina [Verfasser]. "The gametophyte specific ARM repeat protein AtARO1 is required for actin dynamics in Arabidopsis during pollen tube growth and double fertilization / by Marina Gebert." 2008. http://d-nb.info/991466446/34.

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32

Liu, Ming-Che, and 劉明哲. "I. Expression, localization and function of anther-specific genes in Lilium longiflorum. II. Functional analysis of Arabidopsis arabinogalactan protein AGP 31 in pollen tube growth." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/m92a72.

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博士<br>國立中興大學<br>生物科技學研究所<br>102<br>I. A number of stage-specific genes have been isolated from a suppression subtractive cDNA library constructed from developing anthers of L. longiflorum. 5′- and 3′-RACE-PCR were used to obtain the full length cDNA sequences. The LLA89 cDNA encodes an acidic polypeptide of 100 amino acids with a calculated molecular mass of 10.2 kDa. The LLA142 cDNA encodes a basic polypeptide of 56 amino acids with a calculated molecular mass of 5.7 kDa. The LLA66 cDNA encodes a polypeptide of 308 amino acids with a calculated molecular mass of 35.7 kDa. The LLA89 protein ha

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