Abstract:
:Leaf elongation rate, water potential, and osmotic potential were measured in the fifth leaf of maize (Zea mays L.) plants growing in soil from which water was withheld for varying times. Elongation occurred in the basal region, which was enclosed by other leaf sheaths. When water was withheld from the soil, leaf elongation decreased and eventually ceased even though enough solutes accumulated in the elongating region to maintain turgor virtually constant. In the exposed blade, however, turgor was lost and wilt symptoms developed. If the night was prolonged, the elongating region lost much of its ability to accumulate solute, which suggests that the accumulating solutes were of recent photosynthetic origin. Under these conditions, leaf elongation was restricted to higher water potentials than under the usual photoperiodic regime.The solute accumulation and turgor maintenance of the elongating region at low water potentials indicate that differences in water status and physiological behavior exist along grass leaves and that the water status of the elongating region cannot be inferred from measurements on the exposed blade. The increased sensitivity of leaf elongation to low water potentials in prolonged darkness indicates that accumulation of solute and maintenance of turgor play a role in maintaining leaf growth. However, the inhibition of elongation that occurred even when solute accumulation was sufficient to completely maintain turgor indicates that some factor other than photosynthate supply and turgor also affected growth and caused most of the losses in growth under dry conditions.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Michelena VA,Boyer JSdoi
10.1104/pp.69.5.1145subject
Has Abstractpub_date
1982-05-01 00:00:00pages
1145-9issue
5eissn
0032-0889issn
1532-2548journal_volume
69pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Aurora kinases are key effectors of mitosis. Plant Auroras are functionally divided into two clades. The alpha Auroras (Aurora1 and Aurora2) associate with the spindle and the cell plate and are implicated in controlling formative divisions throughout plant development. The beta Aurora (Aurora3) localizes to centromer...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.16.01602
更新日期:2017-01-01 00:00:00
abstract::Localization of mRNAs at the subcellular level is an essential mechanism for specific protein targeting and local control of protein synthesis in both eukaryotes and bacteria. While mRNA localization is well documented in metazoans, somatic cells, and microorganisms, only a handful of well-defined mRNA localization ex...
journal_title:Plant physiology
pub_type: 杂志文章,评审
doi:10.1104/pp.19.00972
更新日期:2020-01-01 00:00:00
abstract::Evidence is presented to support the suggestion that endogenous auxinlike substances participate in controlling the unbending of the hypocotyl hook of Phaseolus vulgaris L. (cv. Black Valentine). An acidic indole was detected in hook diffusates by fluorometry; triiodobenzoic acid, an inhibitor of auxin transport, prev...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.48.2.187
更新日期:1971-08-01 00:00:00
abstract::The aim of this study was to characterize the effect of decreased 2-cysteine peroxiredoxin (2-CP) on the leaf anti-oxidative system in Arabidopsis. At three stages of leaf development, two lines of transgenic Arabidopsis mutants with decreased contents of chloroplast 2-CP were compared with wild type and a control lin...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.124.2.823
更新日期:2000-10-01 00:00:00
abstract::The nitrite-reducing activity of the normal susceptible biotype of lambsquarters (Chenopodium album L.) was strongly inhibited by atrazine in the assay medium, both in the case of the in vivo assays of leaf discs in light, and in vitro photoreduction assays of crude extracts. In vitro assays of crude extracts with met...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.5.984
更新日期:1980-05-01 00:00:00
abstract::Tomato Atypical Receptor Kinase 1 (TARK1) is a pseudokinase required for postinvasion immunity. TARK1 was originally identified as a target of the Xanthomonas euvesicatoria effector protein Xanthomonas outer protein N (XopN), a suppressor of early defense signaling. How TARK1 participates in immune signal transduction...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01400
更新日期:2020-07-01 00:00:00
abstract::Large-scale phenotypic screening presents challenges and opportunities not encountered in typical forward or reverse genetics projects. We describe a modular database and laboratory information management system that was implemented in support of the Chloroplast 2010 Project, an Arabidopsis (Arabidopsis thaliana) reve...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.170118
更新日期:2011-04-01 00:00:00
abstract::Coupling of phosphorylation to electron transport was examined by measuring the photosynthetic control ratio for broken wheat plastids isolated from seedlings at different greening stages. The photosynthetic control ratio progressively increased during greening and tight coupling was noted after granal stacking and th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.5.880
更新日期:1980-05-01 00:00:00
abstract::The enzyme 3'-AMP nucleotidase was purified 2,500- to 5,000-fold from extracts of an acetone powder of wheat (Triticum aestivum) embryonic axes germinated for 40 hours. Sodium dodecyl sulfate acrylamide gel electrophoresis and chromatography on Biogel-P100 indicate that the enzyme is monomeric with a molecular weight ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.2.295
更新日期:1983-02-01 00:00:00
abstract::Two cultivars of rice (Oryza sativa L.) IR-36 and Fujiyama-5 were grown at ambient (360 microbars) and elevated CO(2) (660 microbars) from germination through reproduction in unshaded greenhouses at the Duke University Phytotron. Growth at elevated CO(2) resulted in significant decreases in nighttime respiration and i...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.99.2.473
更新日期:1992-06-01 00:00:00
abstract::FLAGELLIN-SENSING2 (FLS2) is the plant cell surface receptor that perceives bacterial flagellin or flg22 peptide, initiates flg22-signaling responses, and contributes to bacterial growth restriction. Flg22 elicitation also leads to ligand-induced endocytosis and degradation of FLS2 within 1 h. Why plant cells remove t...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.229179
更新日期:2014-01-01 00:00:00
abstract::Saponaria vaccaria (Caryophyllaceae), a soapwort, known in western Canada as cowcockle, contains bioactive oleanane-type saponins similar to those found in soapbark tree (Quillaja saponaria; Rosaceae). To improve our understanding of the biosynthesis of these saponins, a combined polymerase chain reaction and expresse...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.088484
更新日期:2007-02-01 00:00:00
abstract::Previous studies with isolated soybean cotyledon protoplasts revealed the presence of a saturable, simple diffusion, and nonsaturating carrier-mediated uptake of sucrose into soybean cotyledon cells. A proton/sucrose cotransport may be involved in the saturable sucrose uptake (Lin et al. 1984 Plant Physiol 75: 936-940...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.78.3.649
更新日期:1985-07-01 00:00:00
abstract::Lipid peroxide-derived toxic carbonyl compounds (oxylipin carbonyls), produced downstream of reactive oxygen species (ROS), were recently revealed to mediate abiotic stress-induced damage of plants. Here, we investigated how oxylipin carbonyls cause cell death. When tobacco (Nicotiana tabacum) Bright Yellow-2 (BY-2) c...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.115.256834
更新日期:2015-07-01 00:00:00
abstract::Membrane preparation (sedimenting between 13,000(g) and 80,000(g)) of germinating radish seeds (Raphanus sativus L.) was active in hydrolyzing ATP and, to a lesser extent, a variety of other phosphorylated compounds. Dicyclohexylcarbodiimide (DCCD) and diethylstilbestrol significantly inhibited the ATPase activity (40...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.68.2.377
更新日期:1981-08-01 00:00:00
abstract::In immature rib segments prepared from morning-glory (Ipomoea tricolor) flower buds, the major soluble metabolite formed from tracer amounts of l-methionine-U-(14)C was S-methylmethionine (SMM). In segments of senescing ribs, (14)C was progressively lost from SMM and appeared in free methionine. Immature segments cont...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.4.528
更新日期:1976-04-01 00:00:00
abstract::A procedure is described that can be used to minimize toxic effects of polyethylene glycol (PEG) to plants. The procedure is based on recycling nutrient solutions containing PEG-6000 through two plant cultures. Tomato plants grown in -0.3 megapascals PEG solutions used after two growth cycles exhibited minimal toxic e...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.79.2.559
更新日期:1985-10-01 00:00:00
abstract::Hormonal and plant factors regulating the development of the inhibited cotyledonary buds of Lycopersicon esculentum Mill. cv. ;Fireball' seedlings were studied. Excision of the immature plumular leaves of 5- to 20- millimeter length significantly stimulated bud development after 2 to 4 days, but excision of leaves exc...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.62.2.276
更新日期:1978-08-01 00:00:00
abstract::Shifts in the duration and intensity of ambient temperature impair plant development and reproduction, particularly male gametogenesis. Stress exposure causes meiotic defects or premature spore abortion in male reproductive organs, leading to male sterility. However, little is known about the mechanisms underlying str...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.00707
更新日期:2019-10-01 00:00:00
abstract::ATPase activity of plasma membranes isolated from oat (Avena sativa L. cv. Goodfield) roots was activated by divalent cations (Mg(2+) = Mn(2+) > Zn(2+) > Fe(2+) > Ca(2+)) and further stimulated by KCl and a variety of monovalent salts, both inorganic and organic. The enzyme exhibited greater specificity for cations th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.52.1.6
更新日期:1973-07-01 00:00:00
abstract::Membrane-associated lipoxygenase from green tomato (Lycopersicon esculentum L. cv Caruso) fruit has been purified 49-fold to a specific activity of 8.3 mumol.min(-1).mg(-1) of protein by solubilization of microsomal membranes with Triton X-100, followed by anion- exchange and size-exclusion chromatography. The apparen...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.4.1802
更新日期:1992-12-01 00:00:00
abstract::The rice plant (Oryza sativa L. cv Oochikara) is known to be a Si accumulator, but the mechanism responsible for the high uptake of Si by the roots is not well understood. We investigated the role of root hairs and lateral roots in the Si uptake using two mutants of rice, one defective in the formation of root hairs (...
journal_title:Plant physiology
pub_type: 杂志文章
doi:
更新日期:2001-12-01 00:00:00
abstract::A genomic fragment encoding one (HMGR1) of the three 3-hydroxy-3-methylglutaryl coenzyme A reductases (HMGRs) from Hevea brasiliensis (H.B.K.) Mull. Arg. (M.-L. Chye, C.-T. Tan, N.-H. Chua [1992] Plant Mol Biol 19: 473-484) was introduced into Nicotiana tabacum L. cv xanthi via Agrobacterium transformation to study th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.3.761
更新日期:1995-11-01 00:00:00
abstract::We have determined the levels of photosystem II activity and polypeptide abundance in whole leaves and isolated bundle sheath and mesophyll cells of C(4), "C(4)-like," and C(3) species of the genus Flaveria (Asteraceae). On a chlorophyll basis, the whole leaf levels of the D1, D2, and 34-kilodalton photosystem II poly...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.98.3.1154
更新日期:1992-03-01 00:00:00
abstract::The metabolism of d- and l-methionine by immature cotyledons of soybean (Glycine max, L. cv Elf) grown in culture has been investigated using solid-state (13)C and (15)N nuclear magnetic resonance. d-Methionine is taken up by the cotyledons and converted to an amide, most likely by N-malonylation. About 16% of the l-m...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.83.3.698
更新日期:1987-03-01 00:00:00
abstract::Most dicotyledonous species respond to Fe deficiency by developing several mechanisms known as Fe-deficiency stress responses. To study the regulation of these responses, young cucumber plants (Cucumis sativus L. cv Ashley) were grown in nutrient solution for 11 d, being deprived of Fe during the last 4 or 5 d. Inhibi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.4.1133
更新日期:1994-08-01 00:00:00
abstract::A cDNA clone encoding rice (Oryza sativa L.) cytosolic triosephosphate isomerase (TPI), an important glycolytic enzyme, was isolated and characterized. The clone (pRTPI-6) contains an open reading frame of 759 base pairs, encoding a polypeptide chain of 253 amino acid residues (M(r) 27,060). The identity of this clone...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.2.683
更新日期:1993-02-01 00:00:00
abstract::Treatment of melon leaves or seedlings with elicitors of Colletotrichum lagenarium, a fungal pathogen of melon, increases chitinase activity. In treated leaves, chitinase is enhanced within the first 6 hours and becomes 2 to 10 times higher than in control leaves after 24 hours. Ethylene is increased simultaneously an...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.81.1.228
更新日期:1986-05-01 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
abstract::Biosynthesis of malate dehydrogenase isoenzymes was studied in cotyledons of watermelons (Citrullus vulgaris Schrad., var. Stone Mountain). The glyoxysomal and mitochondrial isoenzymes are synthesized as higher molecular weight precursors which can be immunoprecipitated by mono-specific antibodies from the products of...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.70.2.483
更新日期:1982-08-01 00:00:00