Induction by pathogen, salt and drought of a basic class II chitinase mRNA and its in situ localization in pepper (Capsicum annuum )

2002 ◽  
Vol 114 (4) ◽  
pp. 549-558 ◽  
Author(s):  
Jeum Kyu Hong ◽  
Byung Kook Hwang
Keyword(s):  
Capsicum Annuum ◽  
Class Ii ◽  
Class Ii Chitinase ◽  
Basic Class

scholarly journals Expression of Class II Chitinase Gene in Chilli (Capsicum annuum L.) as Response to Fusarium oxysporum Pathogen Attack

2015 ◽  
Vol 9 (3) ◽  
pp. 142-147
Author(s):  
Rejeki Siti Ferniah ◽  
Rina Sri Kasiamdari ◽  
Achmadi Priyatmojo ◽  
Budi Setiadi Daryono
Keyword(s):  
Fusarium Oxysporum ◽  
Capsicum Annuum ◽  
Class Ii ◽  
Chitinase Gene ◽  
Capsicum Annuum L ◽  
Class Ii Chitinase ◽  
Pathogen Attack

Pepper gene encoding a basic class II chitinase is inducible by pathogen and ethephon

Plant Science ◽  
2000 ◽  
Vol 159 (1) ◽  
pp. 39-49 ◽  
Author(s):  
Jeum Kyu Hong ◽  
Ho Won Jung ◽  
Young Jin Kim ◽  
Byung Kook Hwang
Keyword(s):  
Class Ii ◽  
Gene Encoding ◽  
Class Ii Chitinase ◽  
Basic Class

HLA class II expression on human epidermal langerhans cells in situ: Upregulation during the elicitation of allergic contact dermatitis

1992 ◽  
Vol 34 (2) ◽  
pp. 99-106 ◽  
Author(s):  
A.Mieke Mommaas ◽  
Marian C. Wijsman ◽  
Aat A. Mulder ◽  
Marinus C.G. van Praag ◽  
Bert J. Vermeer ◽  
...  
Keyword(s):  
Contact Dermatitis ◽  
Allergic Contact Dermatitis ◽  
Langerhans Cells ◽  
Class Ii ◽  
Hla Class Ii ◽  
Allergic Contact ◽  
Epidermal Langerhans Cells

scholarly journals Diversidad fenotípica de chile Amashito de Tabasco y Chiapas, México

2020 ◽  
Vol 11 (3) ◽  
pp. 649-662
Author(s):  
Luís Latournerie-Moreno ◽  
Roberto Gutiérrez-Burón ◽  
René Garruña-Hernández ◽  
Esaú Ruiz-Sánchez ◽  
Alicia Ruby Lara-Martín ◽  
...  
Keyword(s):  
Capsicum Annuum

El objetivo del trabajo fue realizar la exploración etnobotánica, recolecta y caracterización in situ de poblaciones de chile Amashito (Capsicum annuum var. Glabriusculum) de los estados de Tabasco y Chiapas. El trabajo se desarrolló de julio a diciembre de 2017 en 24 comunidades del estado de Tabasco y 15 comunidades del norte del estado de Chiapas, México. Los sitios de exploración se eligieron con base al sondeo de informantes clave (recolectores reconocidos), información de mercados y literatura disponible. Se aplicó una encuesta a 39 recolectores, uno por cada sitio de estudio. El tamaño de muestra a recolectar varió entre 3 y 5 plantas. Se midieron in situ 20 descriptores morfológicos de planta, flor y fruto de 98 poblaciones. Los datos se analizaron por medio de análisis de componentes principales y conglomerados jerárquicos con las 13 variables que explicaron la mayor variación morfológica. Los recolectores identifican nueve morfotipos de chile Amashito que se distinguen por color, pigmentación, forma y tamaño del fruto principalmente, y estos crecen principalmente en ecosistemas de haciendas de cacao, acahuales, platanales y milpas. Los tres primeros componentes principales explican 50.2% de variación morfológica observada. Las poblaciones de chile Amashito se diferencian y agrupan de acuerdo con las características geográficas de los sitios de estudio. Las poblaciones de la región norte de Chiapas se caracterizaron por presentar frutos alongados y de mayor tamaño en comparación con los de las comunidades de Tabasco. También se encontró que en las zonas aledañas en donde convergen las dos regiones de estudio se distinguió un grupo de poblaciones que comparten similitudes morfológicas.

scholarly journals Modulation of Major Histocompatibility Class II Protein Expression by Varicella-Zoster Virus

2000 ◽  
Vol 74 (4) ◽  
pp. 1900-1907 ◽  
Author(s):  
Allison Abendroth ◽  
Barry Slobedman ◽  
Eunice Lee ◽  
Elizabeth Mellins ◽  
Mark Wallace ◽  
...  
Keyword(s):  
Cell Surface ◽  
Varicella Zoster Virus ◽  
Mhc Class Ii ◽  
Class Ii ◽  
Northern Blot Hybridization ◽  
Major Histocompatibility ◽  
Varicella Zoster ◽  
Ifn Γ ◽  
In Cells

ABSTRACT We sought to investigate the effects of varicella-zoster virus (VZV) infection on gamma interferon (IFN-γ)-stimulated expression of cell surface major histocompatibility complex (MHC) class II molecules on human fibroblasts. IFN-γ treatment induced cell surface MHC class II expression on 60 to 86% of uninfected cells, compared to 20 to 30% of cells which had been infected with VZV prior to the addition of IFN-γ. In contrast, cells that were treated with IFN-γ before VZV infection had profiles of MHC class II expression similar to those of uninfected cell populations. Neither IFN-γ treatment nor VZV infection affected the expression of transferrin receptor (CD71). In situ and Northern blot hybridization of MHC II (MHC class II DR-α) RNA expression in response to IFN-γ stimulation revealed that MHC class II DR-α mRNA accumulated in uninfected cells but not in cells infected with VZV. When skin biopsies of varicella lesions were analyzed by in situ hybridization, MHC class II transcripts were detected in areas around lesions but not in cells that were infected with VZV. VZV infection inhibited the expression of Stat 1α and Jak2 proteins but had little effect on Jak1. Analysis of regulatory events in the IFN-γ signaling pathway showed that VZV infection inhibited transcription of interferon regulatory factor 1 and the MHC class II transactivator. This is the first report that VZV encodes an immunomodulatory function which directly interferes with the IFN-γ signal transduction via the Jak/Stat pathway and enables the virus to inhibit IFN-γ induction of cell surface MHC class II expression. This inhibition of MHC class II expression on VZV-infected cells in vivo may transiently protect cells from CD4+ T-cell immune surveillance, facilitating local virus replication and transmission during the first few days of cutaneous lesion formation.

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