Hydrogen peroxide mediates defence responses induced by chitosans of different molecular weights in rice (Record no. 41674)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625124659.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-7343
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245 10 - TITLE STATEMENT
Title Hydrogen peroxide mediates defence responses induced by chitosans of different molecular weights in rice
490 0# - SERIES STATEMENT
Volume/sequential designation Journal of Plant Physiology, 162, p.937-944, 2005
520 3# - SUMMARY, ETC.
Summary, etc. To investigate the mechanisms whereby treatment with chitosan (CHN)is observed to increase the capacity of plants to resist pathogens, CHNs of different molecular weights (MWs)prepared by enzyme hydrolysis were used to treat rice cells in suspension culture and also rice seedlings. The results obtained with cultured cells showed that in this material CHN treatment could trigger a set of defence responses, including the production of hydrogen peroxide (H2O2), increases in the activities of phenylalanine ammonialyase (PAL; EC 4.3.1.5)and chitinase (CHI; EC 3.2.1.14), increases in transcription of defence-related genes b-1,3-glucanase (glu)and chitinase (chi)and accumulation of pathogen-related protein (PR1). Furthermore, CHNs of different MWs were observed to have different capacities to induce defence responses. CHNs of low MWs were more effective at inducing the described defence responses than those of higher MWs. Enhanced defence against rice blast pathogen Magnaporthe grisea 97-23-2D1 was observed in rice seedlings treated with low MW CHNs compared to seedlings treated with higher MW CHNs. In all cases, suppressing the production of H2O2 by adding scavengers dimethylthiourea (DMTU), 2,5- dihydroxycinnamic acid methyl ester (DHC), catalase (Cat)or ascorbate (As)blocked
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lin, W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Hua, X.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhang, W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Rogers, W.J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Cai, W.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1i_7vcdX6EXCg1YZGtxxWyPXD72VsWMHc/view?usp=drivesdk">https://drive.google.com/file/d/1i_7vcdX6EXCg1YZGtxxWyPXD72VsWMHc/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
Koha item type Documentos solicitados
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-7343 25.06.2025 25.06.2025 Documentos solicitados