Academic literature on the topic 'Periderma'

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Dissertations / Theses on the topic "Periderma"

1

Fernández, Piñán Sandra. "Identificació de gens i processos rellevants pel fel·lema i la suberina usant noves aproximacions." Doctoral thesis, Universitat de Girona, 2018. http://hdl.handle.net/10803/667085.

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The periderm is a complex structure that protects plants’ secondary organs and wounded tissues. This function is given by the phellem, a multilayered tissue formed by cells with suberized cell walls located on the outer part of the periderm. Suberin is a basic polymer for protection thanks to its lipid nature. Exceptionally, the cork oak has a great capacity to produce layers of phellem. Recently, transcriptomics studies, as well as reverse genetic approaches, have contributed to the knowledge of the formation and regulation of the periderm and the synthesis and transport of the suberin compon
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2

Boher, Genís Pau. "Functional genomics of the periderm: the biosynthetic gene FHT, the transcriptional regulator StRiK and the transcriptome deciphering." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/403400.

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We have developed new molecular tools to characterize the FHT and StRIK genes in the tuber periderm. Regarding FHT gene, our results demonstrated that is induced very specifically in suberizing tissues what makes FHT a good marker of the suberization process. Regarding StRIK gene, it has been shown to be a good candidate for the periderm regulation since its silencing causes changes in genes expression related to the transposition of DNA, RNA processing and stress. Finally, by RNA-seq we have identified a wide range of new candidate genes for the formation of the cork oak periderm. Among these
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3

Verdaguer, i. Serrat Roger. "Estudi de la funció del factor de transcripció StNAC103 en el fel·lema." Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/668781.

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The results obtained in this thesis indicate that StNAC103 promoter activity is induced in tissues undergoing suberin synthesis. Moreover StNAC103 transcript accumulation is concomitant to that of CYP86A33 and takes place after that of FHT. Nonetheless, an increase of the suberin and wax accumulation in the silenced periderms for StNAC103 suggests its role as a repressor in suberin and wax accumulation. Altogether these studies support the hypothesis that there exists a very fine regulation of the suberin and wax synthesis in the periderm, in which StNAC103 plays an important role.<br>Els resu
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4

Nascimento, Marcela Blagitz Ferraz do. "Anatomia caulinar de Zanthoxylum rhoifolium Lam. (Rutaceae) e Moquiniastrum polymorphum (Less.) G. Sancho (Asteraceae) que ocorrem em Cerrado e Mata Atlântica." Botucatu, 2017. http://hdl.handle.net/11449/148945.

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Orientador: Carmen Regina Marcati<br>Resumo: Avaliar a estrutura anatômica de plantas que crescem em diferentes ambientes é uma maneira de compreender como as plantas se adaptam às variações destes ambientes. Algumas destas adaptações influenciam no transporte de água e de fotoassimilados, na proteção dos tecidos internos, na força mecânica e na capacidade de armazenamento dos tecidos, que são funções associadas ao caule das plantas. Assim, neste trabalho, avaliamos a estrutura caulinar de duas espécies, Moquiniastrum polymorphum e Zanthoxylum rhoifolium que ocorrem simultaneamente em diferent
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5

Fowler, Tiffany B. Rushing Ann E. "Early periderm development in the shoots of Ulmus alata michx." Waco, Tex. : Baylor University, 2006. http://hdl.handle.net/2104/4899.

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6

Wunderling, Anna [Verfasser], and Laura [Akademischer Betreuer] Ragni. "Molecular networks of periderm development in Arabidopsis / Anna Wunderling ; Betreuer: Laura Ragni." Tübingen : Universitätsbibliothek Tübingen, 2019. http://d-nb.info/1199929689/34.

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7

Neubauer, Jonathan David. "Gene Expression Associated with Wound and Native Periderm Maturation in Potato Tubers." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29771.

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Potato (Solanum tuberosum L.) is the world's fourth largest food crop and large financial losses are incurred each year from wound and bruise related injuries. However, little is known about the coordinate induction of genes that may be associated with, or mark major wound-healing and periderm maturation events. Also, one of the key defense mechanisms for potato tubers is the robust barrier provided by the phellem (skin) of the native periderm. Many biological processes are involved in the formation of this stout tissue. However, little is known about induction of genes that may be associated
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8

Serra, i. Figueras Olga. "Functional Genetics of Suberin: The Role of CYP86A33 and StKCS6 in potato tuber periderm." Doctoral thesis, Universitat de Girona, 2008. http://hdl.handle.net/10803/7634.

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La caracterització funcional de dos gens en la peridermis, la &#969; hidroxilasa d'àcids grassos CYP86A33 -candidata per la funcionalització del carboni &#969;-terminal dels monòmers alifàtics de la suberina- i la ketoacyl-CoA sintasa StKCS6 -candidata per elongar àcids grassos o derivats llargs de suberina i ceres- es realitza per silenciament per RNA d'interferència en patata. <br/>La deficiència de CYP86A33 comporta una gran reducció dels monòmers principals de la suberina, l'àcid gras &#969;-hidroxilat i l'&#945;,&#969;-diàcid C18:1, juntament amb una reducció total de la quantitat de sub
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9

Vergílio, Paula Cristina Benetton. "Relações entre estrutura, química e densidade da casca com sua função em caules e raízes de espécies do cerrado paulista." Botucatu, 2019. http://hdl.handle.net/11449/181310.

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Orientador: Carmen Regina Marcati<br>Resumo: A casca é um sistema biológico complexo que desempenha diversas funções na planta, incluindo condução de fotoassimilados, suporte mecânico, armazenamento de substâncias e proteção contra herbívoros, patógenos e intempéries como o fogo. A casca é composta, principalmente, pelo floema secundário e pela periderme, e reveste tanto caules quanto raízes. O caule está exposto à atmosfera e tem funções de elevação e suporte da planta, enquanto a raiz está exposta ao solo e tem funções de fixar a planta ao solo, armazenar substâncias e absorver e conduzir ág
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10

Duncan, Kaylia Mekelda. "The structure of the zebrafish periderm gene regulatory network and its relevance to orofacial clefting." Diss., University of Iowa, 2019. https://ir.uiowa.edu/etd/6940.

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Non-syndromic orofacial clefting (nsOFC) is among the most common congenital birth defects occurring up to 1 in 800 live births, with genetic and environmental causes. Genome wide association studies (GWAS) have identified several genetic loci that confer risk for nsOFC. However, more than half the heritable risk for nsOFC remains unknown and is considered ‘missing’. Moreover, continued sequencing of nsOFC patient DNA by whole exome sequencing and whole exome sequencing identify hundreds of single nucleotide polymorphism (SNPs). The identification of causal SNPs, however, continues to be a cha
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