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  1. Article: Neoscytalidium dimidiatum causes leaf blight on Sansevieria trifasciata in Brazil

    Monteles, Rodrigo Pinheiro / Sousa, Enayra Silva / da Silva Matos, Kedma / de Brito, Vinícius Soares Torquato / de Melo, Maruzanete Pereira / Beserra, José Evando Aguiar, Jr

    Australasian plant disease notes. 2020 Dec., v. 15, no. 1

    2020  

    Abstract: Sansevieria trifasciata plants showing symptoms of leaf blight were observed in Teresina City, Brazil. Based on morphology and the phylogenetic analysis of DNA sequences of the EF-1α and ITS regions, two isolates of Neoscytalidium dimidiatum were ... ...

    Abstract Sansevieria trifasciata plants showing symptoms of leaf blight were observed in Teresina City, Brazil. Based on morphology and the phylogenetic analysis of DNA sequences of the EF-1α and ITS regions, two isolates of Neoscytalidium dimidiatum were identified. Pathogenicity tests showed that the isolates caused leaf blight on S. trifasciata, in addition to Sansevieria cylindrica, and fulfilled Koch’s postulates. To the best of our knowledge, this report is the first to describe N. dimidiatum on Sansevieria in Brazil.
    Keywords Neoscytalidium dimidiatum ; Sansevieria trifasciata ; knowledge ; leaf blight ; nucleotide sequences ; pathogenicity ; phylogeny ; testing ; Brazil
    Language English
    Dates of publication 2020-12
    Size p. 19.
    Publishing place Springer Netherlands
    Document type Article
    Note NAL-light
    ZDB-ID 2250071-6
    ISSN 1833-928X
    ISSN 1833-928X
    DOI 10.1007/s13314-020-00389-6
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Morpho-Anatomical and Molecular Characterization of the Oversprouting Symptoms Caused by Fusarium decemcellulare in Guarana Plants (Paullinia cupana var. sorbilis)

    de Queiroz, Claudia Afras / da Silva Matos, Kedma / Lobo, Igor Kelvyn Cavalcante / de Sousa, Sandra Barbosa / Muniz, Celli Rodrigues / Beleza Yamagishi, Michel E / Zocolo, Guilherme Julião / Hanada, Rogério Eiji / Gasparotto, Luadir / Sousa, Nelcimar Reis / de Andrade, Edmar Vaz / Cordeiro, Isabelle Bezerra / Melo, Anderson Adriano Martins / da Silva, Gilvan Ferreira

    Tropical plant biology. 2020 Sept., v. 13, no. 3

    2020  

    Abstract: Oversprouting is a poorly studied disease of guarana plant (Paullinia cupana var. sorbilis), a native species from Amazon Rainforest caused by Fusarium decemcellulare (FDC) that affects the plant growth and reproduction, severely compromising ... ...

    Abstract Oversprouting is a poorly studied disease of guarana plant (Paullinia cupana var. sorbilis), a native species from Amazon Rainforest caused by Fusarium decemcellulare (FDC) that affects the plant growth and reproduction, severely compromising productivity. The sorbilis variety of guarana is anciently cultivated and is used today for the industry of soft drinks, cosmetic and pharmaceutical. Transcriptome, proteome, light and electron microscopy were used to compare symptomatic and asymptomatic tissues and reveal anatomical, histological and cytological alterations resultant from the disease. Disease symptoms described here include a marked reduction in the longitudinal axis and the formation of “capsules”, named as this for the first time here, which display hard thickened external walls and contain extremely malformed floral organs and/or poorly differentiated vegetative primordia when occurring isolate in individual branching points. The aggregate of multiple “capsules” in a same branch point produces galls. The production of indol-acetic acid (IAA) in vitro by F. decemcellulare was for the first time reported and the comparative transcriptome and preliminary proteome data from symptomatic and asymptomatic tissues, support the occurrence of hormonal imbalance identified through several plant hormone-related genes and proteins differentially expressed only in symptomatic tissues. Auxin signaling mechanism, as well as auxin-responsive genes associated to cell cycling, division and proliferation also occurred differentially in infected tissues. Oversprouting and the reduction of the longitudinal axis in malformed cells and organs are related to hormonal unbalance are discussed in this paper.
    Keywords Fusarium decemcellulare ; Paullinia cupana ; electron microscopy ; histology ; indigenous species ; industry ; plant growth ; proteome ; reproduction ; transcriptome ; tropical plants ; Amazonia
    Language English
    Dates of publication 2020-09
    Size p. 274-286.
    Publishing place Springer US
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2455624-5
    ISSN 1935-9764 ; 1935-9756
    ISSN (online) 1935-9764
    ISSN 1935-9756
    DOI 10.1007/s12042-020-09256-1
    Database NAL-Catalogue (AGRICOLA)

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