Abstract:
:In response to suboptimal temperatures, temperate annual plants often increase root:shoot ratios, build-up carbohydrates and display typical morphological and anatomical changes. We know less about the responses of biennials such as carrot. As a model plant, carrot has the additional feature of two functionally and morphologically distinct root parts: the taproot, which stores carbohydrate and other compounds, and the fibrous root system involved in acquisition of water and nutrients. Here, we analyze the effects of temperature (12 vs 25°C) on growth, carbohydrate accumulation and whole-plant morphology in two carrot cultivars. Our working hypothesis is that suboptimal temperature favors active formation of reserve structures, rather than passive accumulation of storage carbohydrates. In comparison with plants grown at 25°C, plants grown at 12°C had: (1) higher fibrous root:shoot ratio (13%) , (2) thicker (10-15%) and smaller (up to two- to three-fold) leaves, (3) lower leaf cuticular permeance (two- to four-fold), (4) higher taproot:shoot ratio (two-fold), (5) higher phloem:xylem ratios in taproot (two- to six-fold), (6) unchanged percentage dry matter content (%DMC) in leaves, petioles or fibrous roots and (7) higher %DMC in taproot (20%). However, %DMC of individual taproot tissues (phloem and xylem) was unaffected by temperatures and was consistently higher in the phloem (up to 30%). Therefore, the higher %DMC of whole taproots at 12°C was attributed solely to the increased development of phloem tissue. Carrot, therefore, shares many of the most conspicuous elements of temperate plant responses to low temperatures. Consistently with our hypothesis, however, carrots grown at suboptimal temperature promoted reserve structures, rather than the increase in carbohydrate concentration typical of most temperate annual species and woody perennials.
journal_name
Physiol Plantjournal_title
Physiologia plantarumauthors
González MV,Sadras VO,Equiza MA,Tognetti JAdoi
10.1111/j.1399-3054.2009.01247.xsubject
Has Abstractpub_date
2009-09-01 00:00:00pages
10-21issue
1eissn
0031-9317issn
1399-3054pii
PPL1247journal_volume
137pub_type
杂志文章abstract::Phosphorylated derivatives of phosphatidylinositol, in association with phosphatidylinositol 3-kinase (PI3 kinase, EC 2.7.1.137) and phosphatidylinositol 4-kinase (PI4 kinase, EC 2.7.1.67), play a key role in regulation of fundamental cell processes. We present evidence for a relationship between alpha-amylase (EC 3.2...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01050.x
更新日期:2008-06-01 00:00:00
abstract::Inter-organ communication is essential for plants to coordinate development and acclimate to mechanical environmental fluctuations. The aim of this study was to investigate long-distance signaling in trees. We compared on young poplars the short-term effects of local flame wounding and of local stem bending for two di...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12089
更新日期:2014-02-01 00:00:00
abstract::Because they share common precursors and require significant amounts of energy, photosynthesis and defense against herbivores and pathogens may be inversely related. This relationship was examined in Arabidopsis thaliana exposed to herbivory by Trichoplusia ni neonates. The spatial pattern of photosynthesis was compar...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2009.01265.x
更新日期:2009-10-01 00:00:00
abstract::The effects of high O3 (200 nl l-1 during the light period) and high CO2 (650 &mgr;l l-1 CO2, 24 h a day) alone and in combination were studied on 45-day-old sugar maple (Acer saccharum Marsh.) seedlings for 61 days in growth chambers. After 2 months of treatment under the environmental conditions of the experiment, s...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1034/j.1399-3054.2003.00046.x
更新日期:2003-03-01 00:00:00
abstract::Chlorophyll (Chl) and total soluble protein decreased and proteolytic activity increased over a 12-day period during dark-induced senescence in detached leaves of Tara, a yellowing cultivar (Y) of Dendranthema grandiflora. In Boaldi, a non-yellowing cultivar (NY), Chl and soluble protein remained near initial levels a...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1034/j.1399-3054.2001.1110415.x
更新日期:2001-04-01 00:00:00
abstract::The Kok effect refers to the progressive light-induced inhibition of dark respiration at low light intensities, which saturates around the light compensation point. This appears as a sudden break around the light compensation point in the plot of photosynthesis versus light intensity. The magnitude of the break can be...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1034/j.1399-3054.2001.1130318.x
更新日期:2001-11-01 00:00:00
abstract::The duplicated grass APETALA1/FRUITFULL (AP1/FUL) genes have distinct but overlapping patterns of expression, suggesting their discrete roles in transition to flowering, specification of spikelet meristem identity and specification of floral organ identity. In this study, we analyzed the expression patterns and functi...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12427
更新日期:2016-08-01 00:00:00
abstract::The present study was conducted to improve the transition from proliferation to maturation in embryogenic cultures of Nordmanns fir. For that reason, chemicals reported to affect endogenous levels or activity of auxin were included in the growth media during maturation. The auxin antagonist PCIB reduced proliferation ...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1034/j.1399-3054.2002.1160213.x
更新日期:2002-10-01 00:00:00
abstract::Removal of the embryonic axis prevents the normal decline of carboxypeptidase (Cpase) I in mung bean seedling cotyledons. Cpase I activity and protein, the latter manifested on western blots, almost completely disappear about 24 h before the cotyledon abscises. Of the 3 proteolytic enzyme patterns, only that of Cpase ...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1034/j.1399-3054.2001.1120306.x
更新日期:2001-07-01 00:00:00
abstract::The negative charges of cell wall pectin molecules attributed by pectin methylesterase (PME, EC 3.1.1.11) contribute to Al binding capacity. We examined the expression profiles of 35 members of the PME gene family in the root apex of an Al-sensitive rice 'Zhefu802' under Al stress. While root elongation was inhibited ...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12005
更新日期:2013-08-01 00:00:00
abstract::Suspension cell cultures (SCCs) from one of the oldest seed plants, Ginkgo biloba, show unpredictable alterations in the nature of the lignins, such as is the recruitment of sinapyl alcohol for lignin biosynthesis, compared with the woody tissues of the same species, which lack syringyl (S) lignins. These results show...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01185.x
更新日期:2009-02-01 00:00:00
abstract::Boron (B) is an essential nutrient required for plant growth and physiological processes. Long-distance B transport is facilitated by the formation of B-polyol complexes. We investigated B uptake and distribution in response to differing levels of exogenous nitrogen supply in the hemiparasitic association between Rhin...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01116.x
更新日期:2008-09-01 00:00:00
abstract::Oxylipins produced by the 13-lipoxygenase (LOX) have been reported to play an important role in plant defense responses to herbivores. Yet, the role of oxylipins produced by the 9-LOX pathway in this process remains largely unknown. Here we cloned a gene encoding a chloroplast-localized 9-LOX, Osr9-LOX1, from rice. Tr...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12148
更新日期:2014-09-01 00:00:00
abstract::Non-hydraulic root signals (nHRS) and osmotic adjustment (OA) are two important adaptive responses of plants to water stress. There is little understanding of their relationships during water stress. The threshold range of soil water potential to occurrence of nHRS, the capacity for OA, grain yield and water use effic...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2007.01007.x
更新日期:2008-03-01 00:00:00
abstract::ARI12 belongs to a family of 'RING between RING fingers' (RBR) domain proteins with E3 ligase activity (Eisenhaber et al. 2007). The Arabidopsis genome codes for 14 ARI genes and two pseudogenes (Mladek et al. 2003). Under standard growth conditions ARI12 is predominantly expressed in roots. In addition, ARI12 is stro...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2011.01561.x
更新日期:2012-08-01 00:00:00
abstract::Plant cuticles have been traditionally classified on the basis of their ultrastructure, with certain chemical composition assumptions. However, the nature of the plant cuticle may be misinterpreted in the prevailing model, which was established more than 150 years ago. Using the adaxial leaf cuticle of Ficus elastica,...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12414
更新日期:2016-06-01 00:00:00
abstract::In plants, CALCIUM-DEPENDENT PROTEIN KINASES (CDPKs/CPKs) are involved in calcium signaling in response to endogenous and environmental stimuli. Here, we report that ZmCPK11, one of maize CDPKs, participates in salt stress response and tolerance. Salt stress induced expression and upregulated the activity of ZmCPK11 i...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12938
更新日期:2020-01-01 00:00:00
abstract::The initiation of vascular development occurs during embryogenesis and the development of lateral organs, such as lateral roots and leaves. Understanding the mechanism underlying the initiation of vascular development has been an important goal of plant biologists. Auxin flow is a crucial factor involved in the initia...
journal_title:Physiologia plantarum
pub_type: 杂志文章,评审
doi:10.1111/ppl.12111
更新日期:2014-06-01 00:00:00
abstract::A sustainable society will have to largely refrain from the use of fossil carbon deposits. In such a regime, renewable electricity can be harvested as a primary source of energy. However, as for the synthesis of carbon-based materials from bulk chemicals, an alternative is required. A sustainable approach towards this...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12946
更新日期:2019-05-01 00:00:00
abstract::Recently, we have isolated salt-tolerance genes (SATs) on the basis of the overexpression screening of yeast with a maize cDNA library from kernels. One of the selected genes [salt-tolerance 32 (SAT32)] appears to be a key determinant for salt stress tolerance in yeast cells. Maize SAT32 cDNA encodes for a 49-kDa prot...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01202.x
更新日期:2009-04-01 00:00:00
abstract::Sulfur-containing amino acids, cysteine and methionine synthesized in plants are essential for human and animal nutrition. That is why understanding of how inorganic sulfur is taken up by plants and built into the organic molecules in the process of sulfur assimilation is important. As complex biological systems, plan...
journal_title:Physiologia plantarum
pub_type: 杂志文章,评审
doi:10.1111/j.1399-3054.2007.01012.x
更新日期:2008-02-01 00:00:00
abstract::Temperate perennial woody plants use different environmental signals to coordinate their growth and development in relation to seasonal changes. Preliminary evidences suggest that, even during dormancy, plants maintain effective metabolic activities and molecular mechanisms ensuring them an eventual recording of mecha...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12072
更新日期:2014-02-01 00:00:00
abstract::A greater understanding of the genetics of responses to water deficit/drought may be helpful in improving water-deficit resistance in the early stages of growth in rice. A recombinant inbred population derived from a cross between Zhenshan 97 and Minghui 63 was grown in hydroponic culture to characterize the responses...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2007.00991.x
更新日期:2008-01-01 00:00:00
abstract::Desert plants show specific mechanisms to thrive under prevailing harsh conditions. To study the survival mechanism(s) in native desert plant species, Lesser Cholistan desert in Pakistan was surveyed and two potential salt secretory grass species, Aeluropus lagopoides and Ochthochloa compressa, were selected from five...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01187.x
更新日期:2009-02-01 00:00:00
abstract::Although telomerase (EC 2.7.7.49) is important for genome stability and totipotency of plant cells, the principles of its regulation are not well understood. Therefore, we studied subcellular localization and function of the full-length and truncated variants of the catalytic subunit of Arabidopsis thaliana telomerase...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12021
更新日期:2013-09-01 00:00:00
abstract::Developmental changes of photochemical and non-photochemical processes and the antioxidant system in the shaded peel vs the sun-exposed peel of 'Gala' apple and their responses to sudden exposure of high light were determined to understand the susceptibility of the shaded peel to high light damage with fruit developme...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2008.01131.x
更新日期:2008-10-01 00:00:00
abstract::In land plants, photosystem I (PSI) photoinhibition limits carbon fixation and causes growth defects. In addition, recovery from PSI photoinhibition takes much longer than PSII photoinhibition when the PSI core-complex is degraded by oxidative damage. Accordingly, PSI photoinhibition should be avoided in land plants, ...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12562
更新日期:2017-09-01 00:00:00
abstract::The small monocot plant Brachypodium distachyon is rapidly emerging as a powerful model system to study questions unique to the monocot crops. An extensive BLAST search was carried to identify putative orthologues of the Arabidopsis NRT2 genes in the fully sequenced Brachypodium genome. Seven genes encoding putative h...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12716
更新日期:2019-03-01 00:00:00
abstract::Barley (Hordeum vulgare), a vital crop to the food and beverage industry, is highly vulnerable to unstable conditions on the climatic horizon. An article in this special issue of Physiologia Plantarum by Mahalingam and Bregitzer (2019) describes the impact that individual and combined stresses linked to climate change...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/ppl.12906
更新日期:2019-02-01 00:00:00
abstract::The modifying effect of sucrose on glutamate dehydrogenase (GDH) activity and isoenzyme pattern was investigated in isolated embryos of lupine (Lupinus luteus L.), cultured in vitro in a medium with sucrose (+S) or without sucrose (-S) and exposed to cadmium (Cd) and lead (Pb) stress. Sucrose starvation of lupine embr...
journal_title:Physiologia plantarum
pub_type: 杂志文章
doi:10.1111/j.1399-3054.2009.01294.x
更新日期:2010-01-01 00:00:00