Abstract:
:Substantial errors can be introduced to estimates of leaf resistance (r(l)) obtained from diffusion porometers unless precautions are taken to reduce the leaf-cup temperature difference (T(leaf) - T(cup)) to acceptable levels prior to measurement. When T(leaf) > T(cup), underestimation of leaf resistance occurs; the reverse applies when T(leaf) < T(cup).The effect is most pronounced under open-stomata conditions and declines as stomatal resistance increases. Under typical measurement conditions, T(leaf) - T(cup) values of the order of 1 C induce a reduction in the ratio of the apparent to true leaf resistance to about 0.8 when the leaf resistance is low (r(l) = 1-2 sec cm(-1)). When T(leaf) - T(cup) = 5 C, the ratio drops below 0.5. Under high leaf resistance conditions (r(l) = 10-50 sec cm(-1)) the comparable ratios are approximately 0.9 and 0.7, respectively.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Morrow PA,Slatyer ROdoi
10.1104/pp.47.4.559subject
Has Abstractpub_date
1971-04-01 00:00:00pages
559-61issue
4eissn
0032-0889issn
1532-2548journal_volume
47pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Photoperiodic control of flowering in the short day plant Perilla involves the transmission of a floral stimulus from induced leaves to the shoot apex. We have studied the basipetal movement of this stimulus and of (14)C-labeled assimilates in plants with an induced leaf (donor) grafted into the uppermost internode of...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.51.4.727
更新日期:1973-04-01 00:00:00
abstract::Suberin is a complex hydrophobic polymer that acts as a barrier controlling water and solute fluxes and restricting pathogen infections. Suberin is deposited immediately outside of the plasmalemma in the cell wall of certain tissues such as endodermis of roots, aerial and underground periderms, and seed coats. Suberin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.00834
更新日期:2016-07-01 00:00:00
abstract::The biochemical and immunochemical characterization of a superoxide dismutase (SOD, EC 1.15.1.1) from peroxisomal origin has been carried out. The enzyme is a Cu,Zn-containing SOD (CuZn-SOD) located in the matrix of peroxisomes from watermelon (Citrullus vulgaris Schrad.) cotyledons (L.M. Sandalio and L.A. del Río [19...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.3.1151
更新日期:1995-07-01 00:00:00
abstract::Observed phenotypic variation in the lateral root branching density (LRBD) in maize (Zea mays) is large (1-41 cm(-1) major axis [i.e. brace, crown, seminal, and primary roots]), suggesting that LRBD has varying utility and tradeoffs in specific environments. Using the functional-structural plant model SimRoot, we simu...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.233916
更新日期:2014-10-01 00:00:00
abstract::The SET domain-containing protein, pTAC14, was previously identified as a component of the transcriptionally active chromosome (TAC) complexes. Here, we investigated the function of pTAC14 in the regulation of plastid-encoded bacterial-type RNA polymerase (PEP) activity and chloroplast development. The knockout of pTA...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.184762
更新日期:2011-12-01 00:00:00
abstract::An NADP-dependent dehydrogenase catalyzing the conversion of l-sorbosone to l-ascorbic acid has been isolated from Phaseolus vulgaris L. and Spinacia oleracea L. and partially purified. It is stable at -20 degrees C for up to 8 months. Molecular masses, as determined by gel filtration, were 21 and 29 kilodaltons for b...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.94.3.1492
更新日期:1990-11-01 00:00:00
abstract::The promoter of phytoene synthase, the first specific enzyme of carotenoid biosynthesis, shows two main regulatory regions: a G-box-containing region located near the TATA box, and a TATA box distal region containing the cis-acting element ATCTA, which mediates strong basal promoter activity. This second element was a...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.104828
更新日期:2007-11-01 00:00:00
abstract::After incubation for 1 hr with (75)Se-selenate, excised roots of Astragalus crotalariae, a selenium-accumulating species, and A. lentiginosus, a nonaccumulator, had absorbed radioactivity to levels well over the external concentration. About 98% of the radioactivity was ethanol-soluble, and when analyzed by column and...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.44.6.893
更新日期:1969-06-01 00:00:00
abstract::The distribution of polysomes in the cells of the endosperm of very young (48 hours of germination) seedlings of castor bean (Ricinus communis var. Hale) has been examined. Seedlings exposed to 100 micromolar gibberellin A(3) for periods up to 24 hours showed increased numbers of polysomes associated with endomembrane...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.2.359
更新日期:1980-02-01 00:00:00
abstract::Chlorophyll a fluorescence of Synechococcus UTEX 625 was quenched during the transport of inorganic carbon, even when CO(2) fixation was inhibited by iodoacetamide. Measurements with a pulse modulation fluorometer showed that at least 75% of the quenching was due to oxidation of Q(a), the primary acceptor of photosyst...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.88.1.6
更新日期:1988-09-01 00:00:00
abstract::The vascular cambium produces secondary xylem and phloem in plants and is responsible for wood formation in forest trees. In this study we used a microscale mass-spectrometry technique coupled with cryosectioning to visualize the radial concentration gradient of endogenous indole-3-acetic acid (IAA) across the cambial...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.117.1.113
更新日期:1998-05-01 00:00:00
abstract::Myrosinase is regarded as a defense-related enzyme in the Brassicaceae and is capable of hydrolyzing glucosinolates into various compounds, some of which are toxic. Several myrosinase isoenzymes exist, and some of them have been found in association with nonmyrosinase proteins. One of these associated proteins, myrosi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.2.483
更新日期:1996-02-01 00:00:00
abstract::Chloroplastic and cytoplasmic forms of pea (Pisum sativum L.) leaf glucose-6-P dehydrogenase can be separated by gel electrophoresis. Both forms are found in etiolated seedlings. When light-grown plants are illuminated or when crude extracts are treated with dithiothreitol, the chloroplastic and cytoplasmic forms of t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.6.835
更新日期:1974-06-01 00:00:00
abstract::A diffusion model for phloem swelling and contraction is proposed in which the rate of water movement changes markedly with moisture content. Good agreement between the actual swelling of the phloem of cotton stems and that predicted by the model was obtained. This result implies that water moves more readily into the...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.2.247
更新日期:1975-02-01 00:00:00
abstract::The BEL1-like family of transcription factors is ubiquitous in plants and plays important roles in regulating development. They function in tandem with KNOTTED1 types to bind to a double TTGAC motif in the upstream sequence of target genes. StBEL5 of potato (Solanum tuberosum) functions as a mobile RNA signal that is ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.01314
更新日期:2016-01-01 00:00:00
abstract::Mesophyll cells from leaves of cowpea (Vigna unquiculata [L.] Walp.) plants grown under saline conditions were isolated and used for the determination of photosynthetic CO(2) fixation. Maximal CO(2) fixation rate was obtained when the osmotic potential of both cell isolation and CO(2) fixation assay media were close t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.91.2.493
更新日期:1989-10-01 00:00:00
abstract::Lotus pedunculatus L., Medicago sativa L., Macroptilium atropurpureum, Glycine max, and Trifolium repens L. were grown in a N-free medium and inoculated with one of ten Rhizobium strains. Dry matter, N content, and delta(15)N values were determined for various plant parts.Nodules, with the exception of those from luce...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.72.4.1001
更新日期:1983-08-01 00:00:00
abstract::The molecular basis of plant osmosensing remains unknown. Arabidopsis (Arabidopsis thaliana) Histidine Kinase1 (AHK1) can complement the osmosensitivity of yeast (Saccharomyces cerevisiae) osmosensor mutants lacking Synthetic Lethal of N-end rule1 and SH3-containing Osmosensor and has been proposed to act as a plant o...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.209791
更新日期:2013-02-01 00:00:00
abstract::The genetic advantages to the use of Arabidopsis thaliana mutants for the study of auxin metabolism previously have been partially offset by the complexity of indolic metabolism in this plant and by the lack of proper methods. To address some of these problems, we developed isotopic labeling methods to determine amoun...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.3.781
更新日期:1996-07-01 00:00:00
abstract::Superoxide dismutases (SODs) are key components of the plant antioxidant defense system. While plastidic and cytosolic isoforms have been extensively studied, the importance of mitochondrial SOD at a cellular and whole-plant level has not been established. To address this, transgenic Arabidopsis (Arabidopsis thaliana)...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.113613
更新日期:2008-05-01 00:00:00
abstract::The Mg-nucleoside triphosphatase activity associated with the inner envelope membrane of the pea chloroplast is comprised of at least two components, a major activity that is sensitive to vanadate and sodium fluoride and a minor insensitive activity. The vanadate/fluoride sensitive activity has been partially purified...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.80.4.908
更新日期:1986-04-01 00:00:00
abstract::The plastid genome is highly conserved among plant species, suggesting that alterations of its structure would have dramatic impacts on plant fitness. Nevertheless, little is known about the direct consequences of plastid genome instability. Recently, it was reported that the plastid Whirly proteins WHY1 and WHY3 and ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.223560
更新日期:2013-10-01 00:00:00
abstract::In the absence of sulfur (S), Chlamydomonas reinhardtii increases the abundance of several transcripts encoding proteins associated with S acquisition and assimilation, conserves S amino acids, and acclimates to suboptimal growth conditions. A positive regulator, SAC1 (for sulfur acclimation protein 1), and a negative...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.116137
更新日期:2008-05-01 00:00:00
abstract::An important component of conventional sense, antisense, and double-strand RNA-based gene silencing constructs is the transcriptional terminator. Here, we show that this regulatory element becomes obsolete when gene fragments are positioned between two oppositely oriented and functionally active promoters. The resulti...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.082271
更新日期:2006-08-01 00:00:00
abstract::Insertional mutagenesis using transfer DNA or transposable elements, which is an important tool in functional genomics and is well established in several crops, has not been developed in potato (Solanum tuberosum). Here, we report the application of the tobacco (Nicotiana tabacum) Tnt1 retrotransposon as an insertiona...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.221903
更新日期:2013-09-01 00:00:00
abstract::The brown planthopper, Nilaparvata lugens, is a pest that threatens rice (Oryza sativa) production worldwide. While feeding on rice plants, planthoppers secrete saliva, which plays crucial roles in nutrient ingestion and modulating plant defense responses, although the specific functions of salivary proteins remain la...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.17.00755
更新日期:2018-01-01 00:00:00
abstract::Effects of several membrane ATPase inhibitors on light-induced phase shifting of the circadian conidiation rhythm in Neurospora crassa were examined using mycelial discs in liquid culture. Suppression of phase shifting by the inhibitors was strongly dependent on the pH of the liquid medium in which the discs were cult...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.69.3.619
更新日期:1982-03-01 00:00:00
abstract::The response of cortical microtubules to low temperature and freezing was assessed for root tips of cold-acclimated and non-acclimated winter rye (Secale cereale L. cv Puma) seedlings using indirect immunofluorescence microscopy with antitubulin antibodies. Roots cooled to 0 or -3 degrees C were fixed for immunofluore...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.93.1.77
更新日期:1990-05-01 00:00:00
abstract::The development of photochemical activity in relation to pigment and membrane protein accumulation in chloroplasts of greening wild-type barley (Hordeum vulgare L. cv. Gateway) and its virescens mutant were studied. The rate of chlorophyll accumulation per plastid was faster in the wild-type than in the mutant seedlin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.69.6.1392
更新日期:1982-06-01 00:00:00
abstract::A prominent feature of plant cells is the rapid, incessant movement of the organelles traditionally defined as cytoplasmic streaming and attributed to actomyosin motility. We sequenced six complete Nicotiana benthamiana cDNAs that encode class XI and class VIII myosins. Phylogenetic analysis indicates that these two c...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.113647
更新日期:2008-03-01 00:00:00