necrotrophic fungi associated with epidermal microcracking caused by chilling injury in pickling cucumber fruit fungos necrotróficos associados à microfissura epidérmica causada pelo frio em pepinos em conserva

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ID: 168308
2007
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Ranked #42 of 193 articles by views in proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006

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Abstract
The objective of this work was to visualize the association between microcracking and other epidermal chilling injury symptoms, and to identify rots in cucumber fruit (Cucumis sativus L.) by scanning electron microscopy (SEM). Depressed epidermal areas and surface cracking due to damages of subepidermal cells characterized the onset of pitting in cucumber fruit. The germination of conidia of Alternaria alternata, with some of them evident on the fractures in the cultivar Trópico, occurred after damaging on the epidermis. Before, the chilling injury symptoms became visible, Stemphylium herbarum conidia germinated, and mycelium penetrated through the hypodermis using the microcracks as pathway. In the cultivar Perichán 121 the fungus was identified as Botrytis cinerea.
O objetivo deste trabalho foi visualizar a associação entre microfissuras e outros sintomas na epiderme, induzidos pelo frio, e identificar as podridões de pepino (Cucumis sativus L.) por microscopia eletrônica de varredura. O início do desenvolvimento da lesão em pepino é caracterizado por depressões epidérmicas e pelo fendilhamento superficial, provocado pelo colapso das células subepidérmicas. A germinação dos conídios de Alternaria alternata, localizados nas fendas de pepino cultivar Trópico, ocorreu após o início do desenvolvimento dos sintomas dos danos, causados pelo frio, na epiderme do fruto. A germinação dos conídios de Stemphylium herbarum e a penetração do micélio na hipoderme pelas microfissuras ocorreram antes de os sintomas dos danos causados pelo frio se tornarem visíveis. Na cultivar Perichán 121 observou-se o fungo Botrytis cinerea.
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Authors ;Juan Antonio Martínez;Juan Pablo Fernández-Trujillo
Journal proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006
Year 2007
DOI
10.1590/S0100-204X2007000400019
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000400019
Keywords
cucumis sativus botrytis cinerea alternaria alternata pittingagriculture (general)

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