keyword
MENU ▼
Read by QxMD icon Read
search

flowering time

keyword
https://www.readbyqxmd.com/read/28634257/two-fossil-species-of-metrosideros-myrtaceae-from-the-oligo-miocene-golden-fleece-locality-in-tasmania-australia
#1
Myall Tarran, Peter G Wilson, Michael K Macphail, Greg J Jordan, Robert S Hill
PREMISE OF THE STUDY: The capsular-fruited genus Metrosideros (Myrtaceae) is one of the most widely distributed flowering plant genera in the Pacific but is extinct in Australia today. The center of geographic origin for the genus and the reason for and timing of its extinction in Australia remain uncertain. We identify fossil Metrosideros fruits from the newly discovered Golden Fleece fossil flora in the Oligo-Miocene of Tasmania, Australia, shedding further light on these problems. METHODS: Standard paleopalynological techniques were used to date the fossil-bearing sediments...
June 20, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28634231/hyperactivity-of-the-arabidopsis-cryptochrome-cry1-l407f-mutant-is-caused-by-a-structural-alteration-close-to-the-cry1-atp-binding-sit
#2
Christian Orth, Nils Niemann, Lars Hennig, Lars-Oliver Essen, Alfred Batschauer
Plant cryptochromes (cry) act as UV-A/blue light receptors. The prototype, Arabidopsis thaliana cry1, regulates several light responses during the life cycle, including de-etiolation, and is also involved in regulating flowering time. The cry1 photocycle is initiated by light absorption by its FAD chromophore, which is most likely fully oxidized (FADox) in the dark state and photoreduced to the neutral flavin semiquinone (FADH(o)) in its lit state. Cryptochromes lack the DNA-repair activity of the closely related DNA photolyases, but retain the ability to bind nucleotides such as ATP...
June 20, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28632342/variation-in-gene-regulation-underlying-annual-and-perennial-flowering-in-arabideae-species
#3
Jannice Friedman
The diversity of life history strategies within the angiosperms illustrates the evolutionary flexibility of reproductive characteristics. The number of times an individual reproduces is a key life history trait, and transitions from iteroparous perennials to semelparous annuals have occurred frequently in the flowering plants. Despite the frequency of this evolutionary transition, and the importance of annuality versus perenniality to both agriculture and ecology, understanding the molecular and genetic mechanisms involved in perennial flowering is in their infancy...
July 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28631322/prolonged-embryogenesis-in-austrobaileya-scandens-austrobaileyaceae-its-ecological-and-evolutionary-significance
#4
Juan M Losada, Julien B Bachelier, William E Friedman
The embryology of basal angiosperm lineages (Amborella, Nymphaeales and Austrobaileyales) is central to reconstructing the early evolution of flowering plants. Previous studies have shown that mature seeds in Austrobaileyales are albuminous, with a small embryo surrounded by a substantial diploid endosperm. However, little is known of seed ontogeny and seedling germination in Austrobaileya scandens, sister to all other extant Austrobaileyales. Standard histochemical techniques were used to study ovule/seed development and germination of Austrobaileya...
July 2017: New Phytologist
https://www.readbyqxmd.com/read/28629467/chromatin-marks-and-ambient-temperature-dependent-flowering-strike-up-a-novel-liaison
#5
Alexander Steffen, Dorothee Staiger
A distinct chromatin mark, H3K36me3, has been found to engage in temperature-dependent alternative splicing and ambient temperature-dependent flowering-time control in Arabidopsis.
June 19, 2017: Genome Biology
https://www.readbyqxmd.com/read/28629320/transcriptomic-changes-reveal-gene-networks-responding-to-the-overexpression-of-a-blueberry-dwarf-and-delayed-flowering-1-gene-in-transgenic-blueberry-plants
#6
Guo-Qing Song, Xuan Gao
BACKGROUND: Constitutive expression of the CBF/DREB1 for increasing freezing tolerance in woody plants is often associated with other phenotypic changes including dwarf plant and delayed flowering. These phenotypic changes have been observed when Arabidopsis DWARF AND DELAYED FLOWERING 1 (DDF1) was overexpressed in A. thaliana plants. To date, the DDF1 orthologues have not been studied in woody plants. The aim of this study is to investigate transcriptomic responses to the overexpression of blueberry (Vaccinium corymbosum) DDF1 (herein, VcDDF1-OX)...
June 19, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28628608/tcp4-dependent-induction-of-constans-transcription-requires-gigantea-in-photoperiodic-flowering-in-arabidopsis
#7
Akane Kubota, Shogo Ito, Jae Sung Shim, Richard S Johnson, Yong Hun Song, Ghislain Breton, Greg S Goralogia, Michael S Kwon, Dianne Laboy Cintrón, Tomotsugu Koyama, Masaru Ohme-Takagi, Jose L Pruneda-Paz, Steve A Kay, Michael J MacCoss, Takato Imaizumi
Photoperiod is one of the most reliable environmental cues for plants to regulate flowering timing. In Arabidopsis thaliana, CONSTANS (CO) transcription factor plays a central role in regulating photoperiodic flowering. In contrast to posttranslational regulation of CO protein, still little was known about CO transcriptional regulation. Here we show that the CINCINNATA (CIN) clade of class II TEOSINTE BRANCHED 1/ CYCLOIDEA/ PROLIFERATING CELL NUCLEAR ANTIGEN FACTOR (TCP) proteins act as CO activators. Our yeast one-hybrid analysis revealed that class II CIN-TCPs, including TCP4, bind to the CO promoter...
June 19, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28627760/reproductive-phenology-of-melastomataceae-species-with-contrasting-reproductive-systems-contemporary-and-historical-drivers
#8
Vinícius L G Brito, Fabiano Rodrigo da Maia, Fernando A O Silveira, Carla Magioni Fracasso, José Pires Lemos-Filho, G Wilson Fernandes, Renato Goldenberg, Leonor Patrícia Cerdeira Morellato, Marlies Sazima, Vanessa G Staggemeier
Flowering and fruiting are key events in the life history of plants, and both are critical to their reproductive success. Besides the role of evolutionary history, plant reproductive phenology is regulated by abiotic factors and shaped by biotic interactions with pollinators and seed dispersers. In Melastomataceae, a dominant Neotropical clade, the reproductive systems vary from allogamous with biotic pollination to apomitic, and seed dispersal varies from dry (self-dispersed) to fleshy fruits (animal-dispersed)...
June 19, 2017: Plant Biology
https://www.readbyqxmd.com/read/28626945/european-corn-borer-ostrinia-nubilalis-hbn-lepidoptera-crambidae-comparing-the-performance-of-a-new-bisexual-lure-with-that-of-synthetic-sex-pheromone-in-five-countries
#9
Miklós Tóth, István Szarukán, Antal Nagy, Lorenzo Furlan, Isadora Benvegnu, Magda Rak Cizej, Tamás Ábri, Tamás Kéki, Szilvia Körösi, Attila Pogonyi, Teodora Toshova, Dimitar Velchev, Daniela Atanasova, Alican Kurtulus, Bora Kaydan
BACKGROUND: Phenylacetaldehyde is a flower volatile and attractant among others also for the European corn borer Ostrinia nubilalis. The addition of 4-methoxyphenethyl alcohol has recently been reported to increase O. nubilalis catches 4 to 5 times, yielding a bisexual lure for the species. RESULTS: The bisexual lure significantly outperformed synthetic pheromone lures of O. nubilalis at 11 out of 13 experiments conducted in Bulgaria, Hungary, Italy, Slovenia and Turkey...
June 19, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28624615/cell-size-dependent-transcription-of-flc-and-its-antisense-long-non-coding-rna-coolair-explain-cell-to-cell-expression-variation
#10
Robert Ietswaart, Stefanie Rosa, Zhe Wu, Caroline Dean, Martin Howard
Single-cell quantification of transcription kinetics and variability promotes a mechanistic understanding of gene regulation. Here, using single-molecule RNA fluorescence in situ hybridization and mathematical modeling, we dissect cellular RNA dynamics for Arabidopsis FLOWERING LOCUS C (FLC). FLC expression quantitatively determines flowering time and is regulated by antisense (COOLAIR) transcription. In cells without observable COOLAIR expression, we quantify FLC transcription initiation, elongation, intron processing, and lariat degradation, as well as mRNA release from the locus and degradation...
June 8, 2017: Cell Systems
https://www.readbyqxmd.com/read/28622613/dissociation-of-item-and-source-memory-in-rhesus-monkeys
#11
Benjamin M Basile, Robert R Hampton
Source memory, or memory for the context in which a memory was formed, is a defining characteristic of human episodic memory and source memory errors are a debilitating symptom of memory dysfunction. Evidence for source memory in nonhuman primates is sparse despite considerable evidence for other types of sophisticated memory and the practical need for good models of episodic memory in nonhuman primates. A previous study showed that rhesus monkeys confused the identity of a monkey they saw with a monkey they heard, but only after an extended memory delay...
June 13, 2017: Cognition
https://www.readbyqxmd.com/read/28620399/timing-is-important-unmanned-aircraft-vs-satellite-imagery-in-plant-invasion-monitoring
#12
Jana Müllerová, Josef Brůna, Tomáš Bartaloš, Petr Dvořák, Michaela Vítková, Petr Pyšek
The rapid spread of invasive plants makes their management increasingly difficult. Remote sensing offers a means of fast and efficient monitoring, but still the optimal methodologies remain to be defined. The seasonal dynamics and spectral characteristics of the target invasive species are important factors, since, at certain time of the vegetation season (e.g., at flowering or senescing), plants are often more distinct (or more visible beneath the canopy). Our aim was to establish fast, repeatable and a cost-efficient, computer-assisted method applicable over larger areas, to reduce the costs of extensive field campaigns...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28616659/isolation-and-functional-characterization-of-a-circadian-regulated-constans-homolog-gbco-from-ginkgo-biloba
#13
Jiaping Yan, Dun Mao, Xiaomeng Liu, Lanlan Wang, Feng Xu, Guiyuan Wang, Weiwei Zhang, Yongling Liao
This is the first report to clone and functionally characterize a flowering time gene GbCO in perennial gymnosperm Ginkgo biloba. GbCO complements the co mutant of Arabidopsis, restoring normal early flowering. CONSTANS (CO) is a central regulator of photoperiod pathway, which channels inputs from light, day length, and circadian clock to promote the floral transition. In order to understand the role of CO in gymnosperm Ginkgo biloba, which has a long juvenile phase (15-20 years), a CO homolog (GbCO) was isolated and characterized from G...
June 14, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28616180/sustained-functional-composition-of-pollinators-in-restored-pastures-despite-slow-functional-restoration-of-plants
#14
Marie Winsa, Erik Öckinger, Riccardo Bommarco, Regina Lindborg, Stuart P M Roberts, Johanna Wärnsberg, Ignasi Bartomeus
Habitat restoration is a key measure to counteract negative impacts on biodiversity from habitat loss and fragmentation. To assess success in restoring not only biodiversity, but also functionality of communities, we should take into account the re-assembly of species trait composition across taxa. Attaining such functional restoration would depend on the landscape context, vegetation structure, and time since restoration. We assessed how trait composition of plant and pollinator (bee and hoverfly) communities differ between abandoned, restored (formerly abandoned) or continuously grazed (intact) semi-natural pastures...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28613295/3d-porous-zno-sns-p-n-heterojunction-for-visible-light-driven-photocatalysis
#15
Lijing Wang, Hongju Zhai, Gan Jin, Xiaoying Li, Chunwei Dong, Hao Zhang, Bai Yang, Haiming Xie, Haizhu Sun
A novel two-step solution approach is put forward to design a unique three dimensional (3D) porous ZnO-SnS p-n heterojunction under mild conditions. This special 3D structure is induced via flower-like ZnO in which SnS serves as an efficient photosensitizer to improve the light harvesting across the whole visible range. A profound investigation of the mechanism shows that this 3D porous ZnO-SnS material effectively integrates the large surface area and high redox potential of ZnO, and wide visible-light harvesting of SnS, which largely promotes the transfer and separation rate of carriers...
June 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28611816/environmental-influences-on-the-growing-season-duration-and-ripening-of-diverse-miscanthus-germplasm-grown-in-six-countries
#16
Christopher Nunn, Astley Francis St John Hastings, Olena Kalinina, Mensure Özgüven, Heinrich Schüle, Ivan G Tarakanov, Tim Van Der Weijde, Aleksander A Anisimov, Yasir Iqbal, Andreas Kiesel, Nikolay F Khokhlov, Jon P McCalmont, Heike Meyer, Michal Mos, Kai-Uwe Schwarz, Luisa M Trindade, Iris Lewandowski, John C Clifton-Brown
The development of models to predict yield potential and quality of a Miscanthus crop must consider climatic limitations and the duration of growing season. As a biomass crop, yield and quality are impacted by the timing of plant developmental transitions such as flowering and senescence. Growth models are available for the commercially grown clone Miscanthus x giganteus (Mxg), but breeding programs have been working to expand the germplasm available, including development of interspecies hybrids. The aim of this study was to assess the performance of diverse germplasm beyond the range of environments considered suitable for a Miscanthus crop to be grown...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611811/heading-date-is-not-flowering-time-in-spring-barley
#17
Ahmad M Alqudah, Thorsten Schnurbusch
No abstract text is available yet for this article.
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611810/evolutionary-analysis-of-mikc-c-type-mads-box-genes-in-gymnosperms-and-angiosperms
#18
Fei Chen, Xingtan Zhang, Xing Liu, Liangsheng Zhang
MIKC(c)-type MADS-box genes encode transcription factors that control floral organ morphogenesis and flowering time in flowering plants. Here, in order to determine when the subfamilies of MIKC(c) originated and their early evolutionary trajectory, we sampled and analyzed the genomes and large-scale transcriptomes representing all the orders of gymnosperms and basal angiosperms. Through phylogenetic inference, the MIKC(c)-type MADS-box genes were subdivided into 14 monophyletic clades. Among them, the gymnosperm orthologs of AGL6, SEP, AP1, GMADS, SOC1, AGL32, AP3/PI, SVP, AGL15, ANR1, and AG were identified...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611454/integrated-analysis-and-transcript-abundance-modelling-of-h3k4me3-and-h3k27me3-in-developing-secondary-xylem
#19
Steven G Hussey, Mattheus T Loots, Karen van der Merwe, Eshchar Mizrachi, Alexander A Myburg
Despite the considerable contribution of xylem development (xylogenesis) to plant biomass accumulation, its epigenetic regulation is poorly understood. Furthermore, the relative contributions of histone modifications to transcriptional regulation is not well studied in plants. We investigated the biological relevance of H3K4me3 and H3K27me3 in secondary xylem development using ChIP-seq and their association with transcript levels among other histone modifications in woody and herbaceous models. In developing secondary xylem of the woody model Eucalyptus grandis, H3K4me3 and H3K27me3 genomic spans were distinctly associated with xylogenesis-related processes, with (late) lignification pathways enriched for putative bivalent domains, but not early secondary cell wall polysaccharide deposition...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28610348/bees-of-the-hemihalictus-series-of-lasioglossum-curtis-hymenoptera-halictidae-in-south-korea
#20
Ryuki Murao
The South Korean fauna of the Hemihalictus series belonging to the genus Lasioglossum Curtis are reviewed. Twenty-seven species are recognized for the country. Lasioglossum laevoides Ebmer is recorded from the Korean Peninsula for the first time. The following species are newly recorded from South Korea: L. albipes villosum Ebmer, L. calceatum (Scopoli), L. kiautschouense (Strand), L. sakagamii Ebmer, L. speculinum (Cockerell), L. subfulvicorne subfulvicorne (Blüthgen), L. villosulum (Kirby), and L. vulsum (Vachal)...
May 18, 2017: Zootaxa
keyword
keyword
55225
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"