FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2017403011> ?p ?o ?g. }

• W2017403011 endingPage "727" @default.
• W2017403011 startingPage "716" @default.
• W2017403011 abstract "Seasonal pools undergo marked diurnal changes in pH, free carbon dioxide, and oxygen levels. Previous studies showed that Isoetes howellii utilized crassulacean acid metabolism (CAM) photosynthesis as a means of assimilating carbon at night when ambient carbon dioxide levels are high. However, much of the pool flora is not CAM. We hypothesized that coexistence under extreme carbon—limiting conditions would select for other photosynthetic characteristics in these non—CAM species. Quantitative carbon uptake measurements wee made in the field on the CAM Isoetes howellii and the non—CAM Eleocharis acicularis, Downingia bella, and Plagiobothrys undulatus. Despite wide phylogenetic separation, thee species are structurally convergent in that they all produce aquatic stage with an isoetid growth form. They are functionally similar in that none appear to utilize bicarbonate, and all are carbon limited through much of the day, as indicated by a marked midday depression in carbon uptake that last through the afternoon. All four species were capable of carbon fixation at night, although only in Isoetes howellii was this accompanied by an overnight accumulation of acid. It was estimated that dark fixation in I. howelli contributed up to 40% of its total carbon gain under submerged conditions, but was <1% under aerial conditions. The role of dark fixation in the other three, non—CAM, species is unknown. Short—term (1 s) steady—term (1 s) steady—state 14C tracer studies in the laboratory revealed that, under submerged conditions in the light, all species assimilated carbon into the C3 photosynthetic product phosphoglycerate (PGA) and the C4 photosynthetic products of malate, citrate, and aspartate. The proportion of label fixed into C4 organic acids was greatest in E. acicularis. The ratio of RuBP carboxylase/PEP carboxylase was broadly similar in all species, ranging from 8.8 to 11.5. When the pools dried down and the plants became aerial, photosynthetic rates increased and a midday depression such as occurred under submergence was not observed. Carbon fixation in the dark became negligible, and the RuBP carboxylase/PEP carboxylase ratio increased. Seasonal changes in biomass showed I. howellii and E. acicularis dominated the pools early in the season, and the biomass of the other two species increased later when the pools dried. The latter species, D. bella and P. undulatus, also had higher rates of photosynthesis under aerial conditions." @default.
• W2017403011 created "2016-06-24" @default.
• W2017403011 creator A5060607518 @default.
• W2017403011 creator A5062019511 @default.
• W2017403011 date "1991-04-01" @default.
• W2017403011 modified "2023-09-27" @default.
• W2017403011 title "Diurnal Photosynthesis Cycle in Cam and Non-Cam Seasonal-Pool Aquatic Macrophytes" @default.
• W2017403011 cites W1966293080 @default.
• W2017403011 cites W1978968996 @default.
• W2017403011 cites W2006375215 @default.
• W2017403011 cites W2023506191 @default.
• W2017403011 cites W2038550797 @default.
• W2017403011 cites W2053127520 @default.
• W2017403011 cites W2479986277 @default.
• W2017403011 cites W333539686 @default.
• W2017403011 cites W1604005746 @default.
• W2017403011 doi "https://doi.org/10.2307/2937211" @default.
• W2017403011 hasPublicationYear "1991" @default.
• W2017403011 type Work @default.
• W2017403011 sameAs 2017403011 @default.
• W2017403011 citedByCount "26" @default.
• W2017403011 countsByYear W20174030112013 @default.
• W2017403011 countsByYear W20174030112014 @default.
• W2017403011 countsByYear W20174030112015 @default.
• W2017403011 countsByYear W20174030112020 @default.
• W2017403011 countsByYear W20174030112021 @default.
• W2017403011 countsByYear W20174030112022 @default.
• W2017403011 crossrefType "journal-article" @default.
• W2017403011 hasAuthorship W2017403011A5060607518 @default.
• W2017403011 hasAuthorship W2017403011A5062019511 @default.
• W2017403011 hasConcept C132000320 @default.
• W2017403011 hasConcept C183688256 @default.
• W2017403011 hasConcept C186154404 @default.
• W2017403011 hasConcept C18903297 @default.
• W2017403011 hasConcept C195048187 @default.
• W2017403011 hasConcept C199873434 @default.
• W2017403011 hasConcept C530467964 @default.
• W2017403011 hasConcept C59822182 @default.
• W2017403011 hasConcept C86803240 @default.
• W2017403011 hasConceptScore W2017403011C132000320 @default.
• W2017403011 hasConceptScore W2017403011C183688256 @default.
• W2017403011 hasConceptScore W2017403011C186154404 @default.
• W2017403011 hasConceptScore W2017403011C18903297 @default.
• W2017403011 hasConceptScore W2017403011C195048187 @default.
• W2017403011 hasConceptScore W2017403011C199873434 @default.
• W2017403011 hasConceptScore W2017403011C530467964 @default.
• W2017403011 hasConceptScore W2017403011C59822182 @default.
• W2017403011 hasConceptScore W2017403011C86803240 @default.
• W2017403011 hasIssue "2" @default.
• W2017403011 hasLocation W20174030111 @default.
• W2017403011 hasOpenAccess W2017403011 @default.
• W2017403011 hasPrimaryLocation W20174030111 @default.
• W2017403011 hasRelatedWork W1934255972 @default.
• W2017403011 hasRelatedWork W2033332006 @default.
• W2017403011 hasRelatedWork W2049458341 @default.
• W2017403011 hasRelatedWork W2054901058 @default.
• W2017403011 hasRelatedWork W2061097007 @default.
• W2017403011 hasRelatedWork W2066972384 @default.
• W2017403011 hasRelatedWork W2149997938 @default.
• W2017403011 hasRelatedWork W4205890792 @default.
• W2017403011 hasRelatedWork W4210342053 @default.
• W2017403011 hasRelatedWork W581792882 @default.
• W2017403011 hasVolume "72" @default.
• W2017403011 isParatext "false" @default.
• W2017403011 isRetracted "false" @default.
• W2017403011 magId "2017403011" @default.
• W2017403011 workType "article" @default.