Abstract:
:Water-deficit stresses preferentially reduce shoot growth, thereby disrupting the flow of carbohydrates from source leaves to the developing sinks. Here, we use a novel stress bioassay to dissect responses of field and greenhouse-grown cotton (Gossypium hirsutum) source leaves to water-deficit stresses. Fifth main stem leaf samples were harvested at sunrise and subjected to a prolonged elevated respiratory demand in the dark. Sucrose levels are lower in nonstressed cotton at sunrise compared to water-deficit stressed cotton, potentially predisposing the nonstressed tissue to succumb more rapidly. Tissue death was determined initially using the cell viability stain 2,3,5-triphenyltetrazolium chloride, but was determined in subsequent experiments by monitoring the decline in chlorophyll fluorescence yield. Fluorescence yield measurements were obtained within minutes of harvesting and individual samples were monitored over the time course of the treatment. Analyses of the time course and magnitude of chlorophyll fluorescence yield decline in samples from irrigated and dryland plots permitted the detection of stress responses within 24 h of the cessation of irrigation. The rate of fluorescence yield decline during the elevated respiratory demand treatment slowed as the water-deficit stress increased. Upon irrigation, the source leaves of the water-stressed plants recovered to prestress values within 4 d. Well-watered cotton overexpressing heat shock protein 101 had identical rates of fluorescence yield decline as nontransgenic cotton. These results suggest that the delayed decline in fluorescence yield of water-stressed tissue exposed to prolonged elevated respiratory demand can be used as a sensitive indicator of water-deficit stress responses.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Burke JJdoi
10.1104/pp.106.087783subject
Has Abstractpub_date
2007-01-01 00:00:00pages
108-21issue
1eissn
0032-0889issn
1532-2548pii
pp.106.087783journal_volume
143pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::Cyclic nucleotide-gated channels (CNGCs) have been implicated in diverse aspects of plant growth and development, including responses to biotic and abiotic stress, as well as pollen tube growth and fertility. Here, genetic evidence identifies CNGC16 in Arabidopsis (Arabidopsis thaliana) as critical for pollen fertilit...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.206888
更新日期:2013-02-01 00:00:00
abstract::A technical procedure is described to follow the in vitro release of the ;male germ unit' and the sperm cells from three tricellular pollen species (Brassica, Zea, and Triticum). The condition of the sperm cell was controlled using light microscopy. In addition, for the first time, the sperm cells viability has been c...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.83.3.464
更新日期:1987-03-01 00:00:00
abstract::Organisms exhibit a diverse set of responses when exposed to low-phosphate conditions. Some of these responses are specific for phosphorus limitation, including responses that enable cells to efficiently scavenge phosphate from internal and external stores via the production of high-affinity phosphate transporters and...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.105.059550
更新日期:2005-05-01 00:00:00
abstract::A novel alliinase (EC 4.4.1.4) was detected and purified from the roots of the Amazonian medicinal plant Petiveria alliacea. The isolated enzyme is a heteropentameric glycoprotein composed of two alpha-subunits (68.1 kD each), one beta-subunit (56.0 kD), one gamma-subunit (24.8 kD), and one delta-subunit (13.9 kD). Th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.142430
更新日期:2009-11-01 00:00:00
abstract::The expression of light-regulated genes in plants is controlled by different classes of photoreceptors that act through a variety of signaling molecules. During photomorphogenesis, the early light-induced protein (Elip) genes are among the first to be induced. To understand the light signal transduction pathways that ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:
更新日期:2001-11-01 00:00:00
abstract::Ethylene production and respiration by Granny Smith apples were inhibited by treatment with 20% CO(2) for 2 hours. A similar effect was observed in tissue slices when treated at either 0 or 25 degrees C.The inhibition continued even after an extended aeration period. There is also an inhibition of ethylene emission in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.76.1.88
更新日期:1984-09-01 00:00:00
abstract::The metabolism of arginine by etiolated pumpkin (Cucurbita moschata) seedlings was studied over various time and age intervals by injecting arginine-U-(14)C into the cotyledons. At most, 25% of the (14)C was transported from the cotyledon to the axis tissue and the amount of this transport decreased with increasing ag...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.44.3.361
更新日期:1969-03-01 00:00:00
abstract::The sites of action of several compounds, reported to inhibit CO(2) fixation by chloroplast preparations were located by developing assays in lettuce chloroplasts to test their effect on partial reactions of the carbon cycle and on carbonic anhydrase. The results indicated that: d, l-glyceral-dehyde and 5'-AMP inhibit...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.4.481
更新日期:1975-10-01 00:00:00
abstract::In green plants, the large bioelectric changes that photosynthetically active light stimulates make it difficult to observe electrical potential changes related to phytochrome photoconversion. As a first step towards distinguishing between photosynthetic and phytochrome effects, we showed that red light enhances far-r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.73.3.671
更新日期:1983-11-01 00:00:00
abstract::Fatty acid desaturases regulate the unsaturation status of cellular lipids. They comprise two distinct evolutionary lineages, a soluble class found in the plastids of higher plants and an integral membrane class found in plants, yeast (Saccharomyces cerevisiae), animals, and bacteria. Both classes exhibit a dimeric qu...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.00622
更新日期:2015-09-01 00:00:00
abstract::Gross O2 evolution and uptake by attached, drought-stressed leaves of wheat (Triticum aestivum) were measured using a 16O2/ 18O2 isotope technique and mass spectrometry. The activity of photosystem II, determined from the rate of 16O2 evolution, is only slightly affected under drought conditions. During drought stress...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.1.265
更新日期:1996-09-01 00:00:00
abstract::Nickel was established as an essential micronutrient for the growth of temperate cereal crops. Grain from barley (Hordeum vulgare L. cv ;Onda'; containing 40 to 80 nanograms of Ni per gram dry weight) grown in solution culture with negligible Ni concentrations (< 30 nanograms of Ni per liter) exhibited greatly reduced...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.85.3.801
更新日期:1987-11-01 00:00:00
abstract::Seedlings of maize (Zea mays L. cv Pioneer 3906), hydroponically grown in the dark, were exposed to NaCl either gradually (salt acclimation) or in one step (salt shock). In the salt-acclimation treatment, root extension was indistinguishable from that of unsalinized controls for at least 6 d at concentrations up to 10...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.113.3.881
更新日期:1997-03-01 00:00:00
abstract::Root developmental plasticity enables plants to adapt to limiting or fluctuating nutrient conditions in the soil. When grown under nitrogen (N) deficiency, plants develop a more exploratory root system by increasing primary and lateral root length. However, mechanisms underlying this so-called foraging response remain...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.00440
更新日期:2020-07-01 00:00:00
abstract::Microarrays measure the expression of large numbers of genes simultaneously and can be used to delve into interaction networks involving many genes at a time. However, it is often difficult to decide to what extent knowledge about the expression of genes gleaned in one model organism can be transferred to other specie...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.107.109603
更新日期:2008-02-01 00:00:00
abstract::Salinity is an environmental stress that causes decline in crop yield. Avicennia officinalis and other mangroves have adaptations such as ultrafiltration at the roots aided by apoplastic cell wall barriers to thrive in saline conditions. We studied a cytochrome P450 gene from A. officinalis, AoCYP94B1, and its putativ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.20.01054
更新日期:2020-12-01 00:00:00
abstract::Enhancing nitrogen use efficiency (NUE) in crop plants is an important breeding target to reduce excessive use of chemical fertilizers, with substantial benefits to farmers and the environment. In Arabidopsis (Arabidopsis thaliana), allocation of more NO3 (-) to shoots was associated with higher NUE; however, the comm...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.15.01377
更新日期:2016-03-01 00:00:00
abstract::Coronatine is a chlorosis-inducing toxin produced by the plant pathogen Pseudomonas syringae pv atropurpurea. This bacterium is the causal agent of chocolate spot disease, in which brown lesions with chlorotic margins develop on the leaves of Lolium multiflorum Lam. Among the many physiological changes to plants cause...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.1.219
更新日期:1992-09-01 00:00:00
abstract::Ethylene-induced inhibition of elongation and promotion of lateral expansion in the stems of etiolated pea (Pisum sativum L. var Alaska) seedlings is not associated with any alteration of auxin-stimulated proton extrusion. Indeed, lateral expansion in response to ethylene apparently requires an acidified wall since it...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.73.2.413
更新日期:1983-10-01 00:00:00
abstract::RNA silencing in plants serves as a potent antiviral defense mechanism through the action of small interfering RNAs (siRNAs), which direct RNA degradation. siRNAs can be derived directly from the viral genome or via the action of host-encoded RNA-dependent RNA polymerases (RDRs). Plant genomes encode multiple RDRs, an...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.108.132688
更新日期:2009-03-01 00:00:00
abstract::Recently, we isolated dehydroipomeamarone, a new sesquiterpenoid from sweet potato (Ipomoea batatas Lam.) root tissue infected with Ceratocystis fimbriata (Ell. et Halst.). The purpose of this investigation was to determine whether dehydroipomeamarone was a precursor in the biosynthetic pathway of ipomeamarone. The in...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.53.4.649
更新日期:1974-04-01 00:00:00
abstract::The effect of abscisic acid (ABA) on the exudation process in excised sunflower root was investigated. A promotion of both ion flux and volume exudation rate was observed. Cutting off the external supply of ions to the roots markedly increased the magnitude of the ABA effect. The promotive effect of ABA on exudation r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.65.3.537
更新日期:1980-03-01 00:00:00
abstract::The existence of sphingolipid- and sterol-enriched microdomains, known as lipid rafts, in the plasma membrane (PM) of eukaryotic cells is well documented. To obtain more insight into the lipid molecular species required for the formation of microdomains in plants, we have isolated detergent (Triton X-100)-resistant me...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.091496
更新日期:2007-01-01 00:00:00
abstract::The rate of adaptation of high CO(2) (5% v/v CO(2) in air)-grown Anabaena to a low level of CO(2) (0.05% v/v in air) was determined as a function of O(2) concentration. Exposure of cells to low (2.6%) O(2) concentration resulted in an extended lag in the adaptation to low CO(2) concentration. The rate of adaptation fo...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.1.208
更新日期:1983-01-01 00:00:00
abstract::In celery (Apium graveolens L.), long-distance transport of reduced carbon occurs both in the form of sucrose (Suc) and mannitol. The presence of mannitol has been related to the resistance of celery to salt stress. To investigate the transport events occurring during salt stress, we have cloned the H(+)/Suc transport...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.122.4.1447
更新日期:2000-04-01 00:00:00
abstract::The increase in proline induced by ABA, a process stimulated by NaCl or KCl in barley leaves, did not occur when Na(+) (or K(+)) was present in the external medium as the gluconate salt, namely with an anion unable to permeate the plasma membrane. However, proline increase was restored, to different extents, by the ad...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.86.3.927
更新日期:1988-03-01 00:00:00
abstract::Rhizobitoxine, an inhibitor of methionine biosynthesis in Salmonella typhimurium, inhibited ethylene production about 75% in light-grown sorghum seedlings and in senescent apple tissue. Ethylene production stimulated by indoleacetic acid and kinetin in sorghum was similarly inhibited. With both apple and sorghum, the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.48.1.1
更新日期:1971-07-01 00:00:00
abstract::The Arabidopsis type II peroxiredoxin (PRXII) family is composed of six different genes, five of which are expressed. On the basis of the nucleotide and protein sequences, we were able to define three subgroups among the PRXII family. The first subgroup is composed of AtPRXII-B, -C, and -D, which are highly similar an...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.022533
更新日期:2003-08-01 00:00:00
abstract::Nearly all polysaccharides in plant cell walls are O-acetylated, including the various pectic polysaccharides and the hemicelluloses xylan, mannan, and xyloglucan. However, the enzymes involved in the polysaccharide acetylation have not been identified. While the role of polysaccharide acetylation in vivo is unclear, ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.110.168989
更新日期:2011-03-01 00:00:00
abstract::Net sucrose efflux from discs of fully expanded leaves of soybean (Glycine max [L.] Merr.) plants was studied to characterize sucrose efflux into the apoplast. Net sucrose efflux had a Q(10) of 2.3, was linear for at least 3.5 hours, and was selective for sucrose over glucose. Sulfhydryl group inhibitors reduced sucro...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.83.1.143
更新日期:1987-01-01 00:00:00