FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2138889011> ?p ?o ?g. }

• W2138889011 endingPage "788" @default.
• W2138889011 startingPage "775" @default.
• W2138889011 abstract "On the basis of recent results with young primary maize roots, a model is proposed for the movement of water across roots. It is shown how the complex, 'composite anatomical structure' of roots results in a 'composite transport' of both water and solutes. Parallel apoplastic, symplastic and transcellular pathways play an important role during the passage of water across the different tissues. These are arranged in series within the root cylinder (epidermis, exodermis, central cortex, endodermis, pericycle stelar parenchyma, and tracheary elements). The contribution of these structures to the root's overall radial hydraulic resistance is examined. It is shown that as soon as early metaxylem vessels mature, the axial (longitudinal) hydraulic resistance within the xylem is usually not rate-limiting. According to the model, there is a rapid exchange of water between parallel radial pathways because, in contrast to solutes such as nutrient ions, water permeates cell membranes readily. The roles of apoplastic barriers (Casparian bands and suberin lamellae) in the root's endo- and exodermis are discussed. The model allows for special characteristics of roots such as a high hydraulic conductivity (water permeability) in the presence of a low permeability of nutrient ions once taken up into the stele by active processes. Low root reflection coefficients indicate some apoplastic by-passes for water within the root cylinder. For a given root, the model explains the large variability in the hydraulic resistance in terms of a dependence of hydraulic conductivity on the nature and intensity of the driving forces involved to move water. By switching the apoplastic path on or off, the model allows for a regulation of water uptake according to the demands from the shoot. At high rates of transpiration, the apoplastic path will be partially used and the hydraulic resistance of the root will be low, allowing for a rapid uptake of water. On the contrary, at low rates of transpiration such as during the night or during stress conditions (drought, high salinity, nutrient deprivation), the apoplastic path will be less used and the hydraulic resistance will be high. The role of water channels (aquaporins) in the transcellular path is in the fine adjustment of water flow or in the regulation of uptake in older, suberized parts of plant roots lacking a substantial apoplastic component. The composite transport model explains how plants are designed to optimize water uptake according to demands from the shoot and how external factors may influence water passage across roots." @default.
• W2138889011 created "2016-06-24" @default.
• W2138889011 creator A5075662866 @default.
• W2138889011 creator A5078185582 @default.
• W2138889011 date "1998-05-01" @default.
• W2138889011 modified "2023-10-14" @default.
• W2138889011 title "How does water get through roots?" @default.
• W2138889011 cites W1450789690 @default.
• W2138889011 cites W1508724478 @default.
• W2138889011 cites W1541392946 @default.
• W2138889011 cites W1972782044 @default.
• W2138889011 cites W1974128189 @default.
• W2138889011 cites W1980768326 @default.
• W2138889011 cites W1981697348 @default.
• W2138889011 cites W1983839679 @default.
• W2138889011 cites W1985558089 @default.
• W2138889011 cites W1986623917 @default.
• W2138889011 cites W1989065895 @default.
• W2138889011 cites W1989558562 @default.
• W2138889011 cites W1992678942 @default.
• W2138889011 cites W1993744325 @default.
• W2138889011 cites W1994744818 @default.
• W2138889011 cites W1995375365 @default.
• W2138889011 cites W1995801524 @default.
• W2138889011 cites W1996094382 @default.
• W2138889011 cites W1996147674 @default.
• W2138889011 cites W2003715396 @default.
• W2138889011 cites W2005876208 @default.
• W2138889011 cites W2010848571 @default.
• W2138889011 cites W2011922571 @default.
• W2138889011 cites W2015672350 @default.
• W2138889011 cites W2022747202 @default.
• W2138889011 cites W2023271421 @default.
• W2138889011 cites W2023459272 @default.
• W2138889011 cites W2032825769 @default.
• W2138889011 cites W2034949823 @default.
• W2138889011 cites W2038252246 @default.
• W2138889011 cites W2039031258 @default.
• W2138889011 cites W2040821483 @default.
• W2138889011 cites W2047954625 @default.
• W2138889011 cites W2052127789 @default.
• W2138889011 cites W2054132632 @default.
• W2138889011 cites W2054477768 @default.
• W2138889011 cites W2060188533 @default.
• W2138889011 cites W2062321599 @default.
• W2138889011 cites W2063659386 @default.
• W2138889011 cites W2069421525 @default.
• W2138889011 cites W2070327437 @default.
• W2138889011 cites W2072450718 @default.
• W2138889011 cites W2077944270 @default.
• W2138889011 cites W2083740066 @default.
• W2138889011 cites W2086077745 @default.
• W2138889011 cites W2086747277 @default.
• W2138889011 cites W2091389495 @default.
• W2138889011 cites W2104938456 @default.
• W2138889011 cites W2108598321 @default.
• W2138889011 cites W2112919594 @default.
• W2138889011 cites W2115782567 @default.
• W2138889011 cites W2124639121 @default.
• W2138889011 cites W2146166706 @default.
• W2138889011 cites W2148624161 @default.
• W2138889011 cites W2149710673 @default.
• W2138889011 cites W2156391756 @default.
• W2138889011 cites W2161699281 @default.
• W2138889011 cites W2163789327 @default.
• W2138889011 cites W2164888074 @default.
• W2138889011 cites W2168906895 @default.
• W2138889011 cites W228971852 @default.
• W2138889011 cites W2317003860 @default.
• W2138889011 cites W2320411340 @default.
• W2138889011 cites W2322347094 @default.
• W2138889011 cites W2331640760 @default.
• W2138889011 cites W2468977350 @default.
• W2138889011 cites W2470986861 @default.
• W2138889011 cites W2491622370 @default.
• W2138889011 cites W2492686926 @default.
• W2138889011 cites W2772478313 @default.
• W2138889011 cites W299889743 @default.
• W2138889011 cites W3081714505 @default.
• W2138889011 cites W342360893 @default.
• W2138889011 cites W608830554 @default.
• W2138889011 cites W637449665 @default.
• W2138889011 cites W2045814963 @default.
• W2138889011 doi "https://doi.org/10.1093/jxb/49.322.775" @default.
• W2138889011 hasPublicationYear "1998" @default.
• W2138889011 type Work @default.
• W2138889011 sameAs 2138889011 @default.
• W2138889011 citedByCount "256" @default.
• W2138889011 countsByYear W21388890112012 @default.
• W2138889011 countsByYear W21388890112013 @default.
• W2138889011 countsByYear W21388890112014 @default.
• W2138889011 countsByYear W21388890112015 @default.
• W2138889011 countsByYear W21388890112016 @default.
• W2138889011 countsByYear W21388890112017 @default.
• W2138889011 countsByYear W21388890112018 @default.
• W2138889011 countsByYear W21388890112019 @default.
• W2138889011 countsByYear W21388890112020 @default.
• W2138889011 countsByYear W21388890112021 @default.

• next