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000055620 0247_ $$2DOI$$a10.1111/j.1365-3040.2008.01777.x
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000055620 084__ $$2WoS$$aPlant Sciences
000055620 1001_ $$0P:(DE-Juel1)VDB2595$$aWalter, A.$$b0$$uFZJ
000055620 245__ $$aDiel leaf growth cycles in Clusia spp. are related to changes between C3 photosynthesis and crassulacean acid metabolism during development and during water stress
000055620 260__ $$aOxford [u.a.]$$bWiley-Blackwell$$c2008
000055620 300__ $$a484 - 491
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000055620 440_0 $$04976$$aPlant, Cell and Environment$$v31$$x0140-7791
000055620 500__ $$aRecord converted from VDB: 12.11.2012
000055620 520__ $$aThis study reports evidence that the timing of leaf growth responds to developmental and environmental constraints in Clusia spp. We monitored diel patterns of leaf growth in the facultative C(3)-crassulacean acid metabolism (CAM) species Clusia minor and in the supposedly obligate CAM species Clusia alata using imaging methods and followed diel patterns of CO2 exchange and acidification. Developing leaves of well-watered C. minor showed a C3-like diel pattern of gas exchange and growth, with maximum relative growth rate (RGR) in the early night period. Growth slowed when water was withheld, accompanied by nocturnal CO2 exchange and the diel acid change characteristic of CAM. Maximum leaf RGR shifted from early night to early in the day when water was withheld. In well-watered C. alata, similar changes in the diel pattern of leaf growth occurred with the development of CAM during leaf ontogeny. We hypothesize that the shift in leaf growth cycle that accompanies the switch from C3 photosynthesis to CAM is mainly caused by the primary demand of CAM for substrates for nocturnal CO2 fixation and acid synthesis, thus reducing the availability of carbohydrates for leaf growth at night. Although the shift to leaf growth early in the light is presumably associated with the availability of carbohydrates, source-sink relationships and sustained diurnal acid levels in young leaves of Clusia spp. need further evaluation in relation to growth processes.
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000055620 588__ $$aDataset connected to Web of Science, Pubmed
000055620 650_2 $$2MeSH$$aCircadian Rhythm
000055620 650_2 $$2MeSH$$aClusia: growth & development
000055620 650_2 $$2MeSH$$aClusia: metabolism
000055620 650_2 $$2MeSH$$aPhotosynthesis: physiology
000055620 650_2 $$2MeSH$$aPlant Leaves: growth & development
000055620 650_2 $$2MeSH$$aTime Factors
000055620 650_2 $$2MeSH$$aWater: metabolism
000055620 650_7 $$07732-18-5$$2NLM Chemicals$$aWater
000055620 650_7 $$2WoSType$$aJ
000055620 65320 $$2Author$$agas exchange
000055620 65320 $$2Author$$aimage analysis
000055620 7001_ $$0P:(DE-Juel1)VDB11021$$aChrist, M. M.$$b1$$uFZJ
000055620 7001_ $$0P:(DE-Juel1)129388$$aRascher, U.$$b2$$uFZJ
000055620 7001_ $$0P:(DE-Juel1)129402$$aSchurr, U.$$b3$$uFZJ
000055620 7001_ $$0P:(DE-HGF)0$$aOsmond, B.$$b4
000055620 773__ $$0PERI:(DE-600)2020843-1$$a10.1111/j.1365-3040.2008.01777.x$$gVol. 31, p. 484 - 491$$p484 - 491$$q31<484 - 491$$tPlant, cell & environment$$v31$$x0140-7791$$y2008
000055620 8567_ $$uhttp://dx.doi.org/10.1111/j.1365-3040.2008.01777.x
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000055620 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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