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פותח על ידי קלירמאש פתרונות בע"מ -
Desiccation induced oxidative stress and its biochemical responses in intertidal red alga Gracilaria corticata (Gracilariales, Rhodophyta)
Year:
2011
Authors :
קומארי, פוג'ה
;
.
Volume :
72
Co-Authors:
Kumar, M., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Gupta, V., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Trivedi, N., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Kumari, P., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Bijo, A.J., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Reddy, C.R.K., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Jha, B., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Facilitators :
From page:
194
To page:
201
(
Total pages:
8
)
Abstract:
Intertidal alga Gracilaria corticata growing in natural environment experiences various abiotic stresses during the low tides. The aim of this study was to determine whether desiccation exposure would lead to oxidative stress and its effect varies with exposure periods. This study gives an account of various biochemical changes in G. corticata following the exposure to desiccation for a period of 0 (control), 1, 2, 3 and 4. h under controlled conditions. During desiccation, G. corticata thalli showed dramatic loss of water by almost 47% when desiccated for 4. h. The enhanced production of reactive oxygen species (ROS) and increased lipid peroxidation observed during the exposure of 3-4. h were chiefly contributed by higher lipoxygenase (LOX) activity with the induction of two new LOX isoforms (LOX-2, ~85. kDa; LOX-3, ~65. kDa). The chlorophyll, carotenoids and phycobiliproteins (phycoerythrin and phycocyanin) were increased during initial 2. h exposure compared to control and thereafter declined in the succeeding exposure. The antioxidative enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX) and the regeneration rate of reduced ascorbate (AsA) and glutathione (GSH) increased during desiccation up to 2-3. h. Further, the isoforms of antioxidant enzymes Mn-SOD (~150. kDa), APX-4 (~110. kDa), APX-5 (~45. kDa), GPX-1 (~80. kDa) and GPX-2 (~65. kDa) responded specifically to the desiccation exposure. Compared to control, a relative higher content of both free and bound insoluble putrescine and spermine together with enhanced n-6 PUFAs namely C20:4(n-6) and C20:3(n-6) fatty acids found during 2. h exposure reveals their involvement in defence reactions against the desiccation induced oxidative stress. © 2011 Elsevier B.V.
Note:
Related Files :
algae
biochemical composition
Biochemistry
chlorophyll
Environmental stress
Gracilariales
oxidation
reactive oxygen species
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.envexpbot.2011.03.007
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22791
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:54
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Scientific Publication
Desiccation induced oxidative stress and its biochemical responses in intertidal red alga Gracilaria corticata (Gracilariales, Rhodophyta)
72
Kumar, M., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Gupta, V., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Trivedi, N., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Kumari, P., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Bijo, A.J., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Reddy, C.R.K., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Jha, B., Central Salt and Marine Chemicals Research Institute, Council of Scientific and Industrial Research (CSIR), Bhavnagar, 364021, India
Desiccation induced oxidative stress and its biochemical responses in intertidal red alga Gracilaria corticata (Gracilariales, Rhodophyta)
Intertidal alga Gracilaria corticata growing in natural environment experiences various abiotic stresses during the low tides. The aim of this study was to determine whether desiccation exposure would lead to oxidative stress and its effect varies with exposure periods. This study gives an account of various biochemical changes in G. corticata following the exposure to desiccation for a period of 0 (control), 1, 2, 3 and 4. h under controlled conditions. During desiccation, G. corticata thalli showed dramatic loss of water by almost 47% when desiccated for 4. h. The enhanced production of reactive oxygen species (ROS) and increased lipid peroxidation observed during the exposure of 3-4. h were chiefly contributed by higher lipoxygenase (LOX) activity with the induction of two new LOX isoforms (LOX-2, ~85. kDa; LOX-3, ~65. kDa). The chlorophyll, carotenoids and phycobiliproteins (phycoerythrin and phycocyanin) were increased during initial 2. h exposure compared to control and thereafter declined in the succeeding exposure. The antioxidative enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX) and the regeneration rate of reduced ascorbate (AsA) and glutathione (GSH) increased during desiccation up to 2-3. h. Further, the isoforms of antioxidant enzymes Mn-SOD (~150. kDa), APX-4 (~110. kDa), APX-5 (~45. kDa), GPX-1 (~80. kDa) and GPX-2 (~65. kDa) responded specifically to the desiccation exposure. Compared to control, a relative higher content of both free and bound insoluble putrescine and spermine together with enhanced n-6 PUFAs namely C20:4(n-6) and C20:3(n-6) fatty acids found during 2. h exposure reveals their involvement in defence reactions against the desiccation induced oxidative stress. © 2011 Elsevier B.V.
Scientific Publication
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