Immunomodulation of function of small heat shock proteins prevents their assembly into heat stress granules and results in cell death at sublethal temperatures (Record no. 41490)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625124656.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-7159
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245 10 - TITLE STATEMENT
Title Immunomodulation of function of small heat shock proteins prevents their assembly into heat stress granules and results in cell death at sublethal temperatures
490 0# - SERIES STATEMENT
Volume/sequential designation The Plant Journal, 41(2), p.269-281, 2005
520 3# - SUMMARY, ETC.
Summary, etc. The conformational dynamism and aggregate state of small heat shock proteins (sHSPs)may be crucial for their functions in thermoprotection of plant cells from the detrimental effects of heat stress. Ectopic expression of single chain fragment variable (scFv)antibodies against cytosolic sHSPs was used as new tool to generate sHSP loss-of-function mutants by antibody-mediated prevention of the sHSP assembly in vivo. Anti-sHSP scFv antibodies transiently expressed in heat-stressed tobacco protoplasts were not only able to recognize the endogenous sHSPs but also prevented their assembly into heat stress granula (HSGs). Constitutive expression of the same scFv antibodies in transgenic plants did not alter their phenotype at normal growth temperatures, but their leaves turned yellow and died after prolonged stress at sublethal temperatures. Structural analysis revealed a regular cytosolic distribution of stress-induced sHSPs in mesophyll cells of stress-treated transgenic plants, whereas extensive formation of HSGs was observed in control cells. After prolonged stress at sublethal temperatures, mesophyll cells of transgenic plants suffered destruction of all cellular membranes and finally underwent cell death. In contrast, mesophyll cells of the stressed controls showed HSG disintegration accompanied by appearance of polysomes, dictyosomes and rough endoplasmic reticulum indicating normalization of cell functions. Apparently, the ability of sHSPs to assemble into HSGs as well as the HSG disintegration is a prerequisite for survival of plant cells under continuous stress conditions at sublethal temperatures.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PLANT CYTOSOLIC SMALL HSPS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element HEAT STRESS GRANULES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element HEAT STRESS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element THERMORESISTANCE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element IMMUNOMODULATION
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Miroshnichenko, S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Tripp, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Uta zur Nieden
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Neumann, D.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Conrad, U.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Manteuffel, R.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1XMg6_6xWhREXS0lGLuR0u8BFhpabK7UF/view?usp=drivesdk">https://drive.google.com/file/d/1XMg6_6xWhREXS0lGLuR0u8BFhpabK7UF/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-7159 25.06.2025 25.06.2025 Documentos solicitados