Abstract:
BACKGROUND:DnaJ proteins participate in many metabolic pathways through dynamic interactions with various components of these processes. The role of three small chloroplast-targeted DnaJ proteins, AtJ8 (At1 g80920), AtJ11 (At4 g36040) and AtJ20 (At4 g13830), was investigated here using knock-out mutants of Arabidopsis thaliana. Photochemical efficiency, capacity of CO2 assimilation, stabilization of Photosystem (PS) II dimers and supercomplexes under high light illumination, energy distribution between PSI and PSII and phosphorylation of PSII-LHCII proteins, global gene expression profiles and oxidative stress responses of these DnaJ mutants were analyzed. RESULTS:Knockout of one of these proteins caused a series of events including a decrease in photosynthetic efficiency, destabilization of PSII complexes and loss of control for balancing the redox reactions in chloroplasts. Data obtained with DNA microarray analysis demonstrated that the lack of one of these DnaJ proteins triggers a global stress response and therefore confers the plants greater tolerance to oxidative stress induced by high light or methyl viologen treatments. Expression of a set of genes encoding enzymes that detoxify reactive oxygen species (ROS) as well as a number of stress-related transcription factors behaved in the mutants at growth light similarly to that when wild-type (WT) plants were transferred to high light. Also a set of genes related to redox regulation were upregulated in the mutants. On the other hand, although the three DnaJ proteins reside in chloroplasts, the expression of most genes encoding thylakoid membrane proteins was not changed in the mutants. CONCLUSION:It is proposed that the tolerance of the DnaJ protein knockout plants to oxidative stress occurs at the expense of the flexibility of photosynthetic reactions. Despite the fact that the effects of the individual protein knockout on the response of plants to high light treatment are quite similar, it is conceivable that both specific- and cross-talk functions exist between the three small chloroplast-targeted DnaJ proteins, AtJ8, AtJ11 and AtJ20.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Chen KM,Holmström M,Raksajit W,Suorsa M,Piippo M,Aro EMdoi
10.1186/1471-2229-10-43subject
Has Abstractpub_date
2010-03-07 00:00:00pages
43issn
1471-2229pii
1471-2229-10-43journal_volume
10pub_type
杂志文章abstract:BACKGROUND:UDP-glucose pyrophosphorylase (UGPase) is a sugar-metabolizing enzyme (E.C. 2.7.7.9) that catalyzes a reversible reaction of UDP-glucose and pyrophosphate from glucose-1-phosphate and UTP. UDP-glucose is a key intermediate sugar that is channeled to multiple metabolic pathways. The functional role of UGPase ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-014-0265-8
更新日期:2014-10-07 00:00:00
abstract:BACKGROUND:Exposing imbibed seeds to high temperatures may lead to either thermo-inhibition of germination or thermo-dormancy responses. In thermo-inhibition, seed germination is inhibited but quickly resumed when temperatures are lowered. Upon prolonged exposure to elevated temperatures, thermo-dormancy may be induced...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-018-1455-6
更新日期:2018-10-11 00:00:00
abstract:BACKGROUND:The plant nuclear pore complex has strongly attracted the attention of the scientific community during the past few years, in particular because of its involvement in hormonal and pathogen/symbiotic signalling. In Arabidopsis thaliana, more than 30 nucleoporins have been identified, but only a few of them ha...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-015-0695-y
更新日期:2016-01-05 00:00:00
abstract:BACKGROUND:Transcription factors play the crucial rule of regulating gene expression and influence almost all biological processes. Systematically identifying and annotating transcription factors can greatly aid further understanding their functions and mechanisms. In this article, we present SoyDB, a user friendly dat...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-14
更新日期:2010-01-18 00:00:00
abstract:BACKGROUND:Fenclorim (Fen) can effectively protect rice from pretilachlor (Pre) injury, but its effects on rice have not been formally evaluated; thus, the Fen mode of action for alleviating the phytotoxicity caused by Pre in rice is not clear. This study aimed to examine the biochemical and physiological effects of Fe...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-2304-y
更新日期:2020-03-06 00:00:00
abstract:BACKGROUND:Pumilio RNA-binding proteins are evolutionarily conserved throughout eukaryotes and are involved in RNA decay, transport, and translation repression in the cytoplasm. Although a majority of Pumilio proteins function in the cytoplasm, two nucleolar forms have been reported to have a function in rRNA processin...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-02444-x
更新日期:2020-05-24 00:00:00
abstract:BACKGROUND:Mulberry trees are the most important host for rearing mulberry silkworms in sericulture. Improved varieties of mulberry tree have been developed through traditional breeding procedures. Not much work, however, has been carried out on the molecular characterization of these varieties. Random Amplified Polymo...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-1-3
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:In order to grow, plants rely on soil nutrients which can vary both spatially and temporally depending on the environment, the soil type or the microbial activity. An essential nutrient is nitrogen, which is mainly accessible as nitrate and ammonium. Many studies have investigated transport genes for these i...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-1768-0
更新日期:2019-05-20 00:00:00
abstract:BACKGROUND:ABA-mediated processes are involved in plant responses to water deficit, especially the control of stomatal opening. However in grapevine it is not known if these processes participate in the phenotypic variation in drought adaptation existing between genotypes. To elucidate this question, the response to sh...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-016-0778-4
更新日期:2016-04-18 00:00:00
abstract:BACKGROUND:Damask roses (Rosa damascena Mill.) are mainly used for essential oil production. Previous studies have indicated that all production material in Bulgaria and Turkey consists of only one genotype. Nine polymorphic microsatellite markers were used to analyze the genetic diversity of 40 accessions of R. damasc...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-7-12
更新日期:2007-03-08 00:00:00
abstract:BACKGROUND:Drought stress in juvenile stages of crop development and premature leaf senescence induced by drought stress have an impact on biomass production and yield formation of barley (Hordeum vulgare L.). Therefore, in order to get information of regulatory processes involved in the adaptation to drought stress an...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-015-0701-4
更新日期:2016-01-05 00:00:00
abstract:BACKGROUND:The coordination between nitrogen (N) and sulfur (S) assimilation is required to suitably provide plants with organic compounds essential for their development and growth. The N source induces the adaptation of many metabolic processes in plants; however, there is scarce information about the influence that ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-017-1100-9
更新日期:2017-09-20 00:00:00
abstract:BACKGROUND:Dwarf bunt, which is caused by Tilletia controversa Kühn, is a soilborne and seedborne disease that occurs worldwide and can lead to 70% or even total losses of wheat crops. However, very little information is available about the histological changes that occur in dwarf bunt-resistant and dwarf bunt-suscepti...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-02819-0
更新日期:2021-01-18 00:00:00
abstract:BACKGROUND:Oil palm is the world's most productive oil-food crop despite yielding well below its theoretical maximum. This maximum could be approached with the introduction of elite F1 varieties. The development of such elite lines has thus far been prevented by difficulties in generating homozygous parental types for ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-218
更新日期:2010-10-07 00:00:00
abstract:BACKGROUND:Photosynthesis plays a vital role as an energy source for plant metabolism, and its efficiency may be drastically reduced owing to abiotic stresses. Moso bamboo (Phyllostachys edulis), is a renewable and versatile resource with significant ecological and economic value, which encounters high light stress wit...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-016-0720-9
更新日期:2016-01-28 00:00:00
abstract:BACKGROUND:ANGUSTIFOLIA (AN), one of the CtBP family proteins, plays a major role in microtubule-dependent cell morphogenesis. Microarray analysis of mammalian AN homologs suggests that AN might function as a transcriptional activator and regulator of a wide range of genes. Genetic characterization of AN mutants sugges...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-13-79
更新日期:2013-05-14 00:00:00
abstract:BACKGROUND:Calophyllum brasiliense is highlighted as an important resource of calanolides, which are dipyranocoumarins that inhibit the reverse transcriptase of human immunodeficiency virus type 1 (HIV-1 RT). Despite having great medicinal importance, enzymes involved in calanolide, biosynthesis and the pathway itself,...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-016-0862-9
更新日期:2016-08-15 00:00:00
abstract:BACKGROUND:Flavonoids have essential roles in flower pigmentation, fibre development and disease resistance in cotton. Previous studies show that accumulation of naringenin in developing cotton fibres significantly affects fibre growth. This study focused on determining the effects of the flavonoids naringenin, dihydro...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-2054-x
更新日期:2019-10-24 00:00:00
abstract:BACKGROUND:Brassinosteroids (BRs) are signaling molecules that play essential roles in the spatial regulation of plant growth and development. In contrast to other plant hormones BRs act locally, close to the sites of their synthesis, and thus homeostatic mechanisms must operate at the cellular level to equilibrate BR ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-11-51
更新日期:2011-03-24 00:00:00
abstract:BACKGROUND:Botrytis cinerea, a necrotrophic pathogenic fungus, attacks many crops including potato and tomato. Major genes for complete resistance to B. cinerea are not known in plants, but a few quantitative trait loci have been described in tomato. Loss of function of particular susceptibility (S) genes appears to pr...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-017-1184-2
更新日期:2017-12-06 00:00:00
abstract:BACKGROUND:Plants trigger and tailor defense responses after perception of the oral secretions (OS) of attacking specialist lepidopteran larvae. Fatty acid-amino acid conjugates (FACs) in the OS of the Manduca sexta larvae are necessary and sufficient to elicit the herbivory-specific responses in Nicotiana attenuata, a...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-10-66
更新日期:2010-04-14 00:00:00
abstract:BACKGROUND:Notopterygium incisum is an important Chinese medicinal plant. Its mature seeds have underdeveloped embryos and are physiological dormant. We found the seeds with full developed embryos can germinate after treated by fluridone (FL), an inhibitor of abscisic acid (ABA). In order to understand the molecular me...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-018-1333-2
更新日期:2018-06-11 00:00:00
abstract:BACKGROUND:Pear fruit exhibit a single sigmoid pattern during development, while peach and strawberry fruits exhibit a double sigmoid pattern. However, little is known about the differences between these two patterns. RESULTS:In this study, fruit weights were measured and paraffin sections were made from fruitlet to m...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-020-2317-6
更新日期:2020-03-06 00:00:00
abstract:BACKGROUND:As one of largest angiosperm families, orchids have long fascinated evolutionary biologists with their staggering diversity in floral design and display to promote outcrossing. Two of the most intriguing aspects of orchid pollination that promote cross-pollination are pollinarium reconfiguration (PR) and dec...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-12-67
更新日期:2012-07-03 00:00:00
abstract:BACKGROUND:Somatic embryogenesis is the preferred method for cell to plant regeneration in Vitis vinifera L. However, low frequencies of plant embryo conversion are commonly found. In a previous work we obtained from cut-seeds of a grapevine infected with the Grapevine leafroll associated viruses 1 and 3 (GLRaV-1 and G...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-017-1159-3
更新日期:2017-11-29 00:00:00
abstract:BACKGROUND:The ubiquitous signaling molecule melatonin (N-acetyl-5-methoxytryptamine) (MT) plays vital roles in plant development and stress tolerance. Selenium (Se) may be phytotoxic at high concentrations. Interactions between MT and Se (IV) stress in higher plants are poorly understood. The aim of this study was to ...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-2110-6
更新日期:2019-11-21 00:00:00
abstract:BACKGROUND:It is well known that salinization (high-pH) has been considered as a major environmental threat to agricultural systems. The aim of this study was to investigate the differences between salt stress and alkali stress in metabolic profiles and nutrient accumulation of wheat; these parameters were also evaluat...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-015-0546-x
更新日期:2015-07-07 00:00:00
abstract:BACKGROUND:Even though the catecholamines (dopamine, norepinephrine and epinephrine) have been detected in plants their role is poorly documented. Correlations between norepinephrine, soluble sugars and starch concentration have been recently reported for potato plants over-expressing tyrosine decarboxylase, the enzyme...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/1471-2229-5-1
更新日期:2005-02-09 00:00:00
abstract:BACKGROUND:Long non-coding RNAs (lncRNAs) are involved in multiple biological processes in both mammals and plants. There is growing evidence that they are associated with development; but their expression and regulation during fruit ripening in the model plant tomato (Solanum lycopersicum) has yet to be described. RE...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-018-1300-y
更新日期:2018-05-04 00:00:00
abstract:BACKGROUND:Maize bsd2 (bundle sheath defective2) is a classical C4 mutant with defective C4 photosynthesis, accompanied with reduced accumulation of Rubisco (ribulose bisphosphate carboxylase oxygenase) and aberrant mature chloroplast morphology in the bundle sheath (BS) cells. However, as a hypothetical chloroplast ch...
journal_title:BMC plant biology
pub_type: 杂志文章
doi:10.1186/s12870-019-2219-7
更新日期:2020-01-09 00:00:00