Abstract：
:Diel courses of net CO2 exchange of leaves were studied in Clusia uvitana (Clusiaceae), a tropical Crassulacean acid metabolism (CAM) hemiepiphyte, growing in the crown of a 47-m tall kapok tree on Barro Colorado Island, Panama. Measurements on days without precipitation showed that net uptake of atmospheric CO2 occurred at night, a feature of CAM, as well as in the early morning and late afternoon. During 36 h of almost continuous rainfall, nocturnal net CO2 uptake was abolished and the diel pattern of net CO2 exchange became similar to that of a C3 plant. Exposing well-watered, potted plants of Clusia in the laboratory to temperatures and photosynthetic photon flux densities similar to those during the tropical rainstorm also abolished nocturnal net CO2 uptake. In contrast, Kalanchoe pinnata (Crassulaceae), an obligate CAM plant, still showed net CO2 dark fixation following the same low-light and moderate-temperature conditions, albeit at decreased rates. During these 12-h photoperiods, titratable acidity in Clusia increased slightly above its high level measured at the end of the previous dark period, whereas in Kalanchoe, the acid content decreased by about 40%. A survey among outer canopy leaves of Clusia on Barro Colorado Island showed that leaves that exhibited little or no nocturnal acidification maintained high levels of H+ at dawn and dusk. Progressively lower levels of H+ at dusk were accompanied by progressively higher nocturnal increases in H+. The data suggest that in C. uvitana the rapid switching between CAM- and C3-type carbon fixation that may occur within 24 h in response to environmental changes is controlled by the acidity status of the leaves in the light. Nocturnal CO2 fixation is enhanced by conditions that decrease the organic acid content during the light period.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Zotz G,Winter Kdoi
10.1104/pp.102.3.835subject
Has Abstractpub_date
1993-07-01 00:00:00pages
835-841issue
3eissn
0032-0889issn
1532-2548pii
102/3/835journal_volume
102pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract：:We have cloned and characterized a cDNA encoding a maize (Zea mays L.) heat shock protein (HSP), HSP26. The mRNA of HSP26 is present as a single mRNA species of 1.1 kilobase pairs in size and is detectable when maize seedlings are treated at 40 degrees C but not at 28 degrees C. Accumulation of HSP26 mRNA was detected...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.93.4.1321
更新日期：1990-08-01 00:00:00
abstract：:Visible absorption spectra are presented for the Azolla caroliniana Willd.-Anabaena azollae Strass. association and the individual partners. Although absorption by the phycobiliproteins of the endophytic cyanobacterium clearly complements the absorption by the fern pigments, their contribution to the absorption spectr...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.68.6.1479
更新日期：1981-12-01 00:00:00
abstract：:A cell line of Eschscholtzia californica selected for meta-fluorotyrosine (MFT) tolerance was found to have 10-fold increased levels of phenylalanine and tyrosine compared to the parent line, while most other amino acids were only increased 2-fold. Tracer experiments with shikimic acid in the presence of MFT showed th...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.89.4.1299
更新日期：1989-04-01 00:00:00
abstract：:Novel cyanogenic plants have been generated by the simultaneous expression of the two multifunctional sorghum (Sorghum bicolor [L.] Moench) cytochrome P450 enzymes CYP79A1 and CYP71E1 in tobacco (Nicotiana tabacum cv Xanthi) and Arabidopsis under the regulation of the constitutive 35S promoter. CYP79A1 and CYP71E1 cat...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.123.4.1437
更新日期：2000-08-01 00:00:00
abstract：:2,4-Dichlorophenoxyacetic acid had a multiple effect on the development of indoleacetic acid oxidase isoenzymes in tobacco callus tissues (Nicotiana tabacum, cv. White Gold) cultured in vitro, and the development of these isoenzymes was differentially associated with growth promotion or inhibition depending on the con...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.49.6.957
更新日期：1972-06-01 00:00:00
abstract：:Oscillatory tip growth in pollen tubes depends on prodigious amounts of energy. We have tested the hypothesis that oscillations in the electron transport chain lead to growth oscillations in lily (Lilium formosanum). Using three respiratory inhibitors, oligomycin, antimycin A, and cyanide, we find that pollen tube gro...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.150896
更新日期：2010-02-01 00:00:00
abstract：:Sensitivity to low concentrations of desaspidin (5 x 10(-7)m) sharply distinguishes the photophosphorylations associated with the photooxidation of water from all other types of photophosphorylation by isolated chloroplasts. Contrary to recent reports in the literature, the effects of desapidin were not altered by cha...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.41.8.1376
更新日期：1966-10-01 00:00:00
abstract：:The fhy3 mutation of Arabidopsis impairs phytochrome A (phyA)-mediated inhibition of hypocotyl growth without affecting the levels of phyA measured spectrophotometrically or immunochemically. We investigated whether the fhy3-1 mutation has similar effects on very low fluence responses (VLFR) and high irradiance respon...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.123.1.235
更新日期：2000-05-01 00:00:00
abstract：:Oleuropein, a terpene-derived glycosylated secoiridoid biosynthesized exclusively by members of the Oleaceae family, is involved in a two-component defense system comprising a β-glucosidase that activates oleuropein into a toxic glutaraldehyde-like structure. Oleuropein and its deglycosylated derivatives have high pha...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.17.00512
更新日期：2017-07-01 00:00:00
abstract：:To investigate the relation between cell division and expansion in the regulation of organ growth rate, we used Arabidopsis thaliana primary roots grown vertically at 20 degreesC with an elongation rate that increased steadily during the first 14 d after germination. We measured spatial profiles of longitudinal veloci...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.116.4.1515
更新日期：1998-04-01 00:00:00
abstract：:Brief saturating light flashes were used to probe the mechanism of inactivation of O(2) evolution by Tris in chloroplasts. Maximum inactivation with a single flash and an oscillation with period of four on subsequent flashes was observed. Analyses of the oscillations suggested that only the charge-collecting O(2)-evol...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.65.4.735
更新日期：1980-04-01 00:00:00
abstract：:Bicarbonate uptake by isolated chloroplast envelope membranes and intact chloroplasts of spinach (Spinacia oleracea L. var. Viroflay) in darkness exhibited a similar dependency upon temperature, pH, time, and concentrations of isolated or attached envelope membranes. This similarity in uptake properties demonstrates t...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.54.4.520
更新日期：1974-10-01 00:00:00
abstract：:The present report shows that the effect of red and far red light on the synthesis of phenylalanine ammonia-lyase can be ascribed to the action of phytochrome Pfr. This is true not only for short term irradiation but also for the action of continuous far red light. In the latter case, the model worked out by Hartmann ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.49.1.8
更新日期：1972-01-01 00:00:00
abstract：:Changes in the properties of extractable vacuolar H+-pumping pyrophosphatase (V-PPase) and vacuolar ATPase activities in chilling-sensitive seedlings of mung bean (Vigna radiata) were investigated. Following chilling at 4[deg]C for 48 h, both hydrolytic and proton-pumping activities of the V-PPase increased 1.5- to 2-...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.2.659
更新日期：1995-10-01 00:00:00
abstract：:A toxic effect of alpha,alpha-trehalose in an angiospermic plant, Cuscuta reflexa (dodder), is described. This disaccharide and its analogs, 2-aminotrehalose and 4-aminotrehalose, induced a rapid blackening of the terminal region of the vine which is involved in elongation growth. From the results of in vitro growth o...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.68.6.1369
更新日期：1981-12-01 00:00:00
abstract：:In many plant species, a subset of the genes of the chloroplast genome is transcribed by RpoTp, a nuclear-encoded plastid-targeted RNA polymerase. Here, we describe the positional cloning of the SCABRA3 (SCA3) gene, which was found to encode RpoTp in Arabidopsis (Arabidopsis thaliana). We studied one weak (sca3-1) and...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.106.080069
更新日期：2006-07-01 00:00:00
abstract：:Although the aleurone layer of ceral grain seeds has many advantages for the study of gibberellin action, it has the disadvantage that the hand-isolation of the aleurone layers is time-consuming. To overcome this disadvantage, a commercially available pasta machine was modified and used to remove aleurone layers from ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.90.2.388
更新日期：1989-06-01 00:00:00
abstract：:Transgenic Flaveria bidentis (a C4 species) plants with an antisense gene directed against the mRNA of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) were used to examine the relationship between the CO2 assimilation rate, Rubisco content, and carbon isotope discrimination. Reduction in the amount of Rubisc...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.113.2.469
更新日期：1997-02-01 00:00:00
abstract：:The mechanism of sucrose transport into vacuoles isolated from leaf tissue has been studied only in barley (Hordeum vulgare) mesophyll cells. In this tissue, sucrose transport was reported to be a facilitated diffusion. We have observed a facilitated diffusion of sucrose into vacuoles isolated from this tissue. Howeve...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.88.2.251
更新日期：1988-10-01 00:00:00
abstract：:We have tested directly the effect of Helminthosporium maydis T (Hmt) toxin and various analogs on the membrane potential formed in mitochondria isolated from a Texas (T) cytoplasmic male-sterile and a normal (N) corn. ATP, malate or succinate generated a membrane potential (negative inside) as monitored by the absorb...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.84.3.670
更新日期：1987-07-01 00:00:00
abstract：:The effect of external CO2 concentration on the expression of carbonic anhydrase (CA) and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) was examined in pea (Pisum sativum cv Little Marvel) leaves. Enzyme activities and their transcript levels were reduced in plants grown at 1000 [mu]L/L CO2 compared with p...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.112.2.569
更新日期：1996-10-01 00:00:00
abstract：:The photosynthetic potential of leaves and chloroembryos of Cyamopsis tetragonoloba (L.) Taub as measured by (14)C-bicarbonate fixation, Hill activity, and in vivo fluorescence transients is compared. On a chlorophyll basis, dark fixation of NaH(14)CO(3) in chloroembryos was 1.5 times higher than that of the leaf, whe...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.92.2.408
更新日期：1990-02-01 00:00:00
abstract：:The mitochondrial flavoenzyme l-galactono-gamma-lactone dehydrogenase (GALDH) catalyzes the ultimate step of vitamin C biosynthesis in plants. We found that recombinant GALDH from Arabidopsis (Arabidopsis thaliana) is inactivated by hydrogen peroxide due to selective oxidation of cysteine (Cys)-340, located in the cap...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.109.136929
更新日期：2009-06-01 00:00:00
abstract：:Plant acclimation to growth light environment has been studied extensively; however, the majority of these studies have focused on light intensity and photo-acclimation, with few studies exploring the impact of dynamic growth light on stomatal acclimation and behavior. To assess the impact of growth light regime on st...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.17.01809
更新日期：2018-03-01 00:00:00
abstract：:Synthesis of nitrate reductase (EC 1.6.6.1) in Chlorella vulgaris was studied under inducing conditions, i.e. with cells grown on ammonia and then transferred to nitrate medium. Cycloheximide (but not chloramphenicol) completely inhibited synthesis of the enzyme, but only if it was added at the start (i.e. at the time...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.65.5.939
更新日期：1980-05-01 00:00:00
abstract：:The photometric method was used to test a possibility proposed recently that a new photoreceptor with maximum activity at 620 nm is involved in mediating chloroplast rotation in Mougeotia (Z Lechowski, J Bialczyk [1988] Plant Physiol 88: 189-193). The hypothesis was tested under conditions of continuous dichromatic un...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.94.1.221
更新日期：1990-09-01 00:00:00
abstract：:Rice grains (Oryza sativa L.) from three varieties and three pairs of lines with different protein content were collected at 4-day intervals from 4 to 32 days after flowering. The samples were analyzed for protein, free amino nitrogen, ribonucleic acid, protease activity, and ribonuclease activity. In addition, the ca...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.46.5.743
更新日期：1970-11-01 00:00:00
abstract：:White light (25 watts per square meter) induced an increase in plasma membrane K(+)-channel activity and a 30- to 70-millivolt transient membrane depolarization (completed in 2-3 minutes) in Arabidopsis thaliana leaf mesophyll cells. Transport characteristics of three types of ion channels in the plasma membrane were ...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.99.1.96
更新日期：1992-05-01 00:00:00
abstract：:Restoration of oxygenated conditions following 15 minutes to 2 hours of anoxia causes light-grown pea (Pisum sativum L. var. Alaska) stem segments to elongate 100 to 200% more than continuously aerated segments. This "emergent growth" response takes place in the presence of 5 mm F(-), an inhibitor of anaerobic respira...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.59.4.745
更新日期：1977-04-01 00:00:00
abstract：:Rates of assimilation and transpiration in Eucalyptus pauciflora Sieb. ex Spreng were measured at various ambient partial pressures of CO(2) and various irradiances and were used to estimate leaf conductance and intercellular partial pressure of CO(2). The responses of leaf conductance and rate of assimilation to chan...
journal_title：Plant physiology
pub_type： 杂志文章
doi：10.1104/pp.62.4.670
更新日期：1978-10-01 00:00:00
