FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2018650636> ?p ?o ?g. }

• W2018650636 endingPage "484" @default.
• W2018650636 startingPage "484" @default.
• W2018650636 abstract "Resurrection plants are unique in that the vegetative tissues have the ability to dry to 5% relative water content (RWC) and recover full metabolism in existing tissues on rehydration. The mechanisms whereby this is achieved varies among the orders. In bryophytes, where drying and rehydration is rapid, tissues suffer damage during drying but is repaired upon rehydration. In the angiosperms, extensive protection is laid down during protracted drying and little by way of repair is required. The pteridophytes include several resurrection species, but it is not known whether survival is by protection, repair or a combination of both. The present study was undertaken to determine the mechanism of tolerance in the resurrection fern Morhia caffrorum. Plants were collected from Table Mountain in summer (the dry season) and maintained in a glass house before and during experimentation. Morphological (frond folding), anatomical and ultrastructural (SEM and TEM), physiological (relative water content [RWC] and electrolyte leakage) and biochemical (quantification of sugars, LEAs and antioxidants) were assessed during drying and rehydration of plants. Plants dried in summer were desiccation tolerant. Fronds dried to 5%RWChadminimal electrolyte leakage and recovered full turgor on rehydration. They curled inwards and chlorophyll shading occurred facilitated by a dense layer of adaxial scales. Sucrose levels increased and a number of heat stable LEA-like proteins were produced de novo during drying. These declined during rehydration to levels present in pre-dried fronds. The enzymic antioxidants, ascorbate peroxidase, catalase, glutathione reductase and superoxide dismutase, remained active during the desiccation and rehydration. Subcellular organisation was retained without evidence of damage. During the winter months, when rain is prevalent (albeit that they did not experience the rain), the plants lost the ability to recover from desiccation stress. Fronds did not curl during drying and full rehydration did not occur. Sucrose levels did not increase and no new heat stable proteins appeared upon dehydration. Antioxidant enzymes became denatured and lost activity upon dehydration. During winter, the plants produces spores which became desiccation tolerant and have all the same characteristics of desiccation tolerant “summer” fronds. Upon germination of these spores, an event which occurs in spring and early summer, the new ferns were once again desiccation tolerant. To our knowledge, this is the first report of a species in which desiccation tolerance is seasonal." @default.
• W2018650636 created "2016-06-24" @default.
• W2018650636 creator A5006026456 @default.
• W2018650636 creator A5043883521 @default.
• W2018650636 creator A5060932423 @default.
• W2018650636 date "2007-07-01" @default.
• W2018650636 modified "2023-09-24" @default.
• W2018650636 title "Associations between the biophysics of water and desiccation stress in Vitellaria paradoxa seeds" @default.
• W2018650636 doi "https://doi.org/10.1016/j.sajb.2007.04.009" @default.
• W2018650636 hasPublicationYear "2007" @default.
• W2018650636 type Work @default.
• W2018650636 sameAs 2018650636 @default.
• W2018650636 citedByCount "0" @default.
• W2018650636 crossrefType "journal-article" @default.
• W2018650636 hasAuthorship W2018650636A5006026456 @default.
• W2018650636 hasAuthorship W2018650636A5043883521 @default.
• W2018650636 hasAuthorship W2018650636A5060932423 @default.
• W2018650636 hasBestOaLocation W20186506361 @default.
• W2018650636 hasConcept C144027150 @default.
• W2018650636 hasConcept C2983671280 @default.
• W2018650636 hasConcept C2992468275 @default.
• W2018650636 hasConcept C50402729 @default.
• W2018650636 hasConcept C59822182 @default.
• W2018650636 hasConcept C86803240 @default.
• W2018650636 hasConceptScore W2018650636C144027150 @default.
• W2018650636 hasConceptScore W2018650636C2983671280 @default.
• W2018650636 hasConceptScore W2018650636C2992468275 @default.
• W2018650636 hasConceptScore W2018650636C50402729 @default.
• W2018650636 hasConceptScore W2018650636C59822182 @default.
• W2018650636 hasConceptScore W2018650636C86803240 @default.
• W2018650636 hasIssue "3" @default.
• W2018650636 hasLocation W20186506361 @default.
• W2018650636 hasOpenAccess W2018650636 @default.
• W2018650636 hasPrimaryLocation W20186506361 @default.
• W2018650636 hasRelatedWork W1686850210 @default.
• W2018650636 hasRelatedWork W1984159028 @default.
• W2018650636 hasRelatedWork W2060037796 @default.
• W2018650636 hasRelatedWork W2264212765 @default.
• W2018650636 hasRelatedWork W2301139633 @default.
• W2018650636 hasRelatedWork W2373716385 @default.
• W2018650636 hasRelatedWork W2917474921 @default.
• W2018650636 hasRelatedWork W3159221500 @default.
• W2018650636 hasRelatedWork W4244125629 @default.
• W2018650636 hasRelatedWork W82451494 @default.
• W2018650636 hasVolume "73" @default.
• W2018650636 isParatext "false" @default.
• W2018650636 isRetracted "false" @default.
• W2018650636 magId "2018650636" @default.
• W2018650636 workType "article" @default.