Severity: Warning
Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 143
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 143
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 209
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3098
Function: getPubMedXML
File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
Severity: Warning
Message: Attempt to read property "Count" on bool
Filename: helpers/my_audit_helper.php
Line Number: 3100
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3100
Function: _error_handler
File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
Plant cell walls are composite structures surrounding cells and involved in both mechanical support and perception of their environment. They are mainly composed of polysaccharides (90-95% of their mass) and proteins (5-10%). The cell wall proteins (CWPs) contribute to the arrangements and modifications of polymer networks and to cell-to-cell communication. The structure and composition of cell walls are not uniform in the whole plants, but rather specialized in different cell types to fulfil different functions. As examples, two kinds of cells are covered with extracellular structures composed of lipids: epidermal cells of aerial organs synthesize a cuticle on their outside surface whereas endodermal root cells form a suberin surrounding strip. In both cases, these particular hydrophobic layers contribute to the protection of the cells against attacks by pathogens or abiotic stresses and regulate physiological processes. If the intracellular biosynthesis of the molecules forming these layers starts to be welldescribed, the mechanisms of their assembly beyond the plasma membrane remain largely unknown. In this review, this issue is addressed on the basis on cell wall proteomics data which has allowed the identification of many CWPs possibly related to lipid metabolism during the last years, in particular in Arabidopsis thaliana and tomato. These data are combined with transcriptomics and genetics studies. The main known roles of extracellular proteins related to lipid metabolism are discussed.
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Source |
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http://dx.doi.org/10.2174/1389203718666170918152859 | DOI Listing |
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