Abstract:
:Low-temperature scanning-electron microscopy was used to study the freezing of leaves of five species that have no resistance to freezing: bean (Phaseolus vulgaris L.), tobacco (Nicotiana tabacum L.), tomato (Lycopersicon esculentum L.), cucumber (Cucumis sativus L.), and corn (Zea mays L.). In the leaves of the four dicotyledonous species, ice was extracellular and the cells of all tissues were collapsed. In contrast, in maize leaves ice was extracellular in the mesophyll, and these cells were collapsed, but the epidermal and bundle-sheath cells apparently retained their original shapes and volume. It is concluded that the leaves of the freezing-sensitive dicotyledonous species tested were killed by cellular dehydration induced by extracellular freezing, and not by intracellular freezing. Freezing injury in maize leaves apparently resulted from a combination of freezing-induced cellular dehydration of some cells and intracellular ice formation in epidermal and bundle-sheath cells.
journal_name
Plantajournal_title
Plantaauthors
Ashworth EN,Pearce RSdoi
10.1007/s00425-001-0683-3subject
Has Abstractpub_date
2002-03-01 00:00:00pages
798-805issue
5eissn
0032-0935issn
1432-2048journal_volume
214pub_type
杂志文章相关文献
PLANTA文献大全abstract::The expression pattern of the salT gene was analyzed in different cell types and organs of rice (Oryza sativa L.) in response to saline and hormonal treatments to obtain detailed information on the physiological cues controlling gene expression. Gel blot analysis of RNA and in-situ hybridization performed on seedlings...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s004250050470
更新日期:1998-12-01 00:00:00
abstract::The apparent photosynthetic affinity of A. variabilis to CO2 is greatly affected by the CO2 concentration in the medium during growth. Halfmaximal rate of photosynthetic O2 evolution is achieved at 10 μM and 100 μM inorganic carbon (Cinorg) in cells grown at low-CO2 (air) and high CO2 (5% v/v CO2 in air), respectively...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00384557
更新日期:1980-08-01 00:00:00
abstract::In an optimized liquid medium containing auxin and cytokinin, mesophyll cells isolated from Zinnia elegans L. seedlings can be induced to differentiate into tracheary elements (TEs) at high frequency. However, it is known that buffering the medium at neutral pH severely suppresses TE differentiation. In the process of...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-006-0224-1
更新日期:2006-07-01 00:00:00
abstract::The effects of methyl jasmonate and jasmonic acid on uptake of abscisic acid (ABA) by suspension-cultured runner-bean cells and subapical runner-bean root segments have been investigated. Increasing concentrations of methyl jasmonate inhibit ABA uptake by the cultured cells with a K i of 22±3 μM. This is not due to cy...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00397356
更新日期:1985-10-01 00:00:00
abstract::Pea plants grown under different conditions of cultivation, and eight different plant species with variegated leaves were used to study the intracellular localization of shikimate oxidoreductase (EC 1.1.1.25), the marker enzyme of the pre-chorismate pathway. The two series of experiments indicated an intra-and an extr...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00397408
更新日期:1983-07-01 00:00:00
abstract::Gene-for-gene resistance is a well-known type of plant disease resistance. It is governed by plant resistance (R) genes and their matching pathogen avirulence (Avr) genes. This resistance is characterized by a hypersensitive response (HR) resulting from the interaction between products of a complementary R and Avr gen...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-005-0036-8
更新日期:2005-12-01 00:00:00
abstract::Oxygen and CO2 exchange were measured concurrently in leaves of shade-grownAlocasia macrorrhiza (L.) G. Don during lightflecks consisting of short periods of high photon flux density (PFD) superimposed on a low-PFD background illumination. Oxygen exchange was measured with a zirconium-oxide ceramic cell in an atmosphe...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00634483
更新日期:1988-12-01 00:00:00
abstract::1. The plastids of the saprophytic orchid Neottia nidus-avis contain, besides chlorophyll a, all plastidquinones and carotenoids of normal chloroplasts from higher plants. The relative concentrations of plastidquinones and carotenoids are, however, quite different from those in photosynthetically active plant tissue. ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388961
更新日期:1969-12-01 00:00:00
abstract::For phototropic curvature of a green sunflower seedling, only the hypocotyl has to be illuminated; the tip and cotyledons are not involved in stimulus perception. The etiolated seedling is phototropically insensitive, illumination of only the hypocotyl renders it sensitive. It is concluded that the photoreceptor is lo...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393292
更新日期:1981-04-01 00:00:00
abstract::The vascular system in plants is induced and controlled by streams of inductive hormonal signals. Auxin produced in young leaves is the primary controlling signal in vascular differentiation. Its polar and non-polar transport pathways and major controlling mechanisms are clarified. Ethylene produced in differentiating...
journal_title:Planta
pub_type: 杂志文章,评审
doi:10.1007/s00425-013-1927-8
更新日期:2013-11-01 00:00:00
abstract::The inactivation temperature for Hill activity and for the long-lived delayed fluorescence of isolated Pisum sativum L. chloroplasts was found to depend on pH, the maximal value being in the pH region 5-7. Salts increase the inactivation temperature by 4-7°C. Effects of D2O and some other substances that modify the th...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00402854
更新日期:1984-03-01 00:00:00
abstract::Growth inhibitors were assayed from extracts of intact (attached) and of excised (cultured) root caps of Zea mays L., cv. Merit, the roots of which show a positive geotropic response only after exposure to light. If caps are intact at the time of illumination, at least two inhibitory substances are produced, an acid i...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00394989
更新日期:1981-12-01 00:00:00
abstract::Changes in gene expression related to ethylene synthesis were investigated during ripening of tomato fruit, and in unripe fruit and leaves after wounding. Messenger RNA was extracted at different stages of ripening, or at various times after wounding, and translated in vitro. A number of changes in mRNA were noted in ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00407014
更新日期:1986-05-01 00:00:00
abstract:MAIN CONCLUSION:A novel method for culturing ovules of Gossypium barbadense allowed in vitro comparisons with Gossypium hirsutum and revealed variable roles of microtubules in controlling cotton fiber cell expansion. Cotton fibers undergo extensive elongation and secondary wall thickening as they develop into our most ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-019-03106-5
更新日期:2019-05-01 00:00:00
abstract::Embryogenesis occurs in cells from brome grass grown in suspension culture in defined medium. Exogenous hormones are not required. The embryos develop into plants which lack chlorophyll. ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00384708
更新日期:1970-12-01 00:00:00
abstract::Incorporation of [(14)C]uridine into ribosomal RNA and ribosomal RNA precursor fractions was studied in isolated wheat embryos and in embryos remaining within the intact grains during germination. In isolated embryos, radioactive 25S and 18S as well as 31S RNA species appeared already within the first 3 h of germinati...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00384191
更新日期:1977-01-01 00:00:00
abstract::The flow karyotypes of different maize (Zea mays L.) inbred and hybrid lines were analyzed. The accumulation and isolation of large quantities of high-quality metaphase chromosomes from root tips was achieved from many kinds of maize lines. The chromosome suspensions were prepared by a simple slicing method from synch...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-002-0793-6
更新日期:2002-08-01 00:00:00
abstract::Artemisia annua L. is the only natural resource that produces artemisinin (Qinghaosu), an endoperoxide sesquiterpene lactone used in the artemisinin-combination therapy of malaria. The cross-hybridization properties of A. annua do not favor studying artemisinin biosynthesis. To overcome this problem, in this study, we...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-011-1430-z
更新日期:2011-10-01 00:00:00
abstract::The giant cells of the petiolar hairs of Heracleum mantegazzianum contain cytoplasmic fibres that are readily visible with phase contrast or interference contrast optics. These fibres are associated with saltatory particle movement and protoplasmic streaming in this cell and are believed to be the living image of simi...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00386612
更新日期:1970-03-01 00:00:00
abstract::Fe uptake in dicotyledonous plants is mediated by a root plasma membrane-bound ferric reductase that reduces extracellular Fe(III)-chelates, releasing Fe(2+) ions, which are then absorbed via a metal ion transporter. We previously showed that Fe deficiency induces an increased capacity to absorb Fe and other micronutr...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-003-1156-7
更新日期:2004-03-01 00:00:00
abstract::The effects of the local anesthetic dibucaine on coupling between electron transport and ATP synthesis-hydrolysis by the coupling-factor complex (CF0CF1 ATPase) were investigated in thylakoid membranes from Spinacia oleracea L. cv. Monatol. Evidence is presented that inhibition of ATP synthesis was produced by a speci...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00194278
更新日期:1991-03-01 00:00:00
abstract:MAIN CONCLUSION:ATR-FTIR spectroscopy in combination with uni- and multivariate analysis was used to quantify the spectral-chemical composition of the leaf cuticle of pea, investigating the effects of variety and heat stress. Field pea (Pisum sativum L.) is sensitive to heat stress and our goal was to improve canopy co...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-018-3025-4
更新日期:2019-02-01 00:00:00
abstract::Sucrose is taken up and accumulated by cotyledons of Ricinus communis L. Autoradiographic studies reveal a predominant accumulation of sucrose in the phloem of the cotyledons. The export of sucrose from the cotyledons to hypocotyl and roots proceeds in the phloem by mass flow. These results, taken together with previo...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00388125
更新日期:1980-04-01 00:00:00
abstract::We have investigated whether sucrose accumulation in heterotrophic cell-suspension cultures of Chenopodium rubrum L. is regulated by a cycle in which sucrose is simultaneously synthesised and degraded. Net sucrose accumulation was measured by monitoring the sucrose content, unidirectional synthesis was monitored by su...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00197115
更新日期:1990-09-01 00:00:00
abstract:MAIN CONCLUSIONS:Exogenously applied GR24 affected somatic embryo formation and morphogenesis of strigolactone-deficient tomato mutant through cross-talk with auxins and cytokinins indicating involvement of SLs in the embryogenic process. Strigolactones (SLs) mediate the regulation of plant responses to the environment...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-016-2625-0
更新日期:2017-03-01 00:00:00
abstract::The rate of glycolate excretion by Coccochloris peniocystis Kütz. cells incubated under conditions of low bicarbonate concentration and high light intensity was linear for only the initial 15 min of incubation and no additional glycolate accumulated in the medium after 20 min. Excretion was maximal in cells grown on 5...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00393232
更新日期:1976-01-01 00:00:00
abstract::Ricinus communis cv. Carmencita seedlings with their cotyledons incubated in sucrose solution and their hypocotyls cut to induce exudation of phloem sap, constitute a system of sucrose fluxes into and out of the cotyledons. This system was characterized with respect to quasi-steady-state conditions of sucrose uptake a...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00199964
更新日期:1992-07-01 00:00:00
abstract::The retention of photosystems I and II and or RuDP carboxylase activity in chloroplasts isolated from the first leaves of Victory oat (Avena sativa L.) seedlings was followed as the chloroplasts senesced in darkness. Both photosystems (PS) I and II retained their full activity after 3 days at 1°C, while even after 7 d...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00387157
更新日期:1977-01-01 00:00:00
abstract::An acidic (Fs) and a nearly neutral (Fn) protein fraction were extracted from the chromatin of calf thymus and pea seedlings. Both fractions are able to combine with protein-free DNA to form a complex, which, however, has a lower thermal stability than a DNA-histone complex. Fs and Fn inhibit root initiation in a simi...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/BF00379824
更新日期:1969-06-01 00:00:00
abstract::The effects of desiccation on the early development stages of Mazzaella laminarioides, Scytosiphon lomentaria and Lessonia nigrescens, algal species with different patterns of distribution across the intertidal zone, were examined in the laboratory. In addition, the protective effect against desiccation was evaluated ...
journal_title:Planta
pub_type: 杂志文章
doi:10.1007/s00425-011-1512-y
更新日期:2012-02-01 00:00:00