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Bud dormancy

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https://www.readbyqxmd.com/read/28207822/identification-classification-and-transcription-profiles-of-the-b-type-response-regulator-family-in-pear
#1
Junbei Ni, Songling Bai, Ling Gao, Minjie Qian, Linbing Zhong, Yuanwen Teng
Type-B response regulators (B-RRs) are transcription factors that function in the final step of two-component signaling systems. In model plants, B-RRs have been shown to play important roles in cytokinin signal transduction. However, the functions of B-RRs in pear have not been well studied. In this report, we conducted a genome-wide analysis and identified 11 putative genes encoding B-PpRR proteins based on the published genome sequence of Pyrus bretschneideri. A phylogenetic tree of the B-PpRR family was constructed, and the motif distribution, chromosome localization, and gene structure of B-PpRR family genes were determined...
2017: PloS One
https://www.readbyqxmd.com/read/28198417/chilling-affects-phytohormone-and-post-embryonic-development-pathways-during-bud-break-and-fruit-set-in-apple-malus-domestica-borkh
#2
Gulshan Kumar, Khushboo Gupta, Shivalika Pathania, Mohit Kumar Swarnkar, Usha Kumari Rattan, Gagandeep Singh, Ram Kumar Sharma, Anil Kumar Singh
The availability of sufficient chilling during bud dormancy plays an important role in the subsequent yield and quality of apple fruit, whereas, insufficient chilling availability negatively impacts the apple production. The transcriptome profiling during bud dormancy release and initial fruit set under low and high chill conditions was performed using RNA-seq. The comparative high number of differentially expressed genes during bud break and fruit set under high chill condition indicates that chilling availability was associated with transcriptional reorganization...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103799/comparative-rna-seq-based-transcriptomic-analysis-of-bud-dormancy-in-grape
#3
Muhammad Khalil-Ur-Rehman, Long Sun, Chun-Xia Li, Muhammad Faheem, Wu Wang, Jian-Min Tao
BACKGROUND: Bud dormancy is an important biological phenomenon of perennial plants that enables them to survive under harsh environmental circumstances. Grape (Vitis vinifera) is one of the most grown fruit crop worldwide; however, underlying mechanisms involved in grape bud dormancy are not yet clear. This work was aimed to explore the underlying molecular mechanism regulating bud dormancy in grape. RESULTS: We have performed transcriptome and differential transcript expression analyses of "Shine Muscat" grape buds using the Illumina RNA-seq system...
January 19, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28064193/time-indices-of-multiphasic-development-in-genotypes-of-sweet-cherry-are-similar-from-dormancy-to-cessation-of-pit-growth
#4
David M Gibeaut, Matthew D Whiting, Todd Einhorn
BACKGROUND AND AIMS: The archetypical double sigmoid-shaped growth curve of the sweet cherry drupe (Prunus avium) does not address critical development from eco-dormancy to anthesis and has not been correlated to reproductive bud development. Accurate representation of the growth and development of post-anthesis ovaries is confounded by anthesis timing, fruiting-density and the presence of unfertilized and defective ovaries whose growth differs from those that persist to maturation. These factors were addressed to assess pre-anthesis and full-season growth and development of three sweet cherry cultivars, 'Chelan', 'Bing' and 'Sweetheart', differing primarily in seasonal duration and fruit size...
February 2017: Annals of Botany
https://www.readbyqxmd.com/read/27909827/remediation-of-blowouts-by-clonal-plants-in-maqu-degraded-alpine-grasslands-of-northwest-china
#5
JianJun Kang, WenZhi Zhao, Ming Zhao
The sand-fixation of plants is considered to be the most effective and fundamental measure in desertification control in many arid and semi-arid regions. Carex brunnescens (Carex spp) and Leymus secalinus (Leymus), two perennial clonal herbs native to the Maqu degraded alpine areas of northwest China, are dominant and constructive species in active sand dunes that have excellent adaptability to fix sand dunes found to date. In order to study the ability and mechanism of sandland blowout remediation by two clone plants C...
December 1, 2016: Journal of Plant Research
https://www.readbyqxmd.com/read/27901272/photoperiod-and-temperature-mediated-control-of-phenology-in-trees-a-molecular-perspective
#6
REVIEW
Rajesh Kumar Singh, Tetiana Svystun, Badr AlDahmash, Anna Maria Jönsson, Rishikesh P Bhalerao
Contents 511 I. 511 II. 512 III. 513 IV. 513 V. 517 VI. 517 VII. 521 VIII. 521 Acknowledgements 521 References 521 SUMMARY: Trees growing in boreal and temperate regions synchronize their growth with seasonal climatic changes in adaptive responses that are essential for their survival. These trees cease growth before the winter and establish a dormant state during which growth cessation is maintained by repression of responses to growth-promotive signals. Reactivation of growth in the spring follows the release from dormancy promoted by prolonged exposure to low temperature during the winter...
January 2017: New Phytologist
https://www.readbyqxmd.com/read/27878597/the-sweet-cherry-prunus-avium-flowering-locus-t-gene-is-expressed-during-floral-bud-determination-and-can-promote-flowering-in-a-winter-annual-arabidopsis-accession
#7
Antonia Yarur, Esteban Soto, Gabriel León, Andrea Miyasaka Almeida
FT gene is expressed in leaves and buds and is involved in floral meristem determination and bud development in sweet cherry. In woody fruit perennial trees, floral determination, dormancy and bloom, depends on perception of different environmental and endogenous cues which converge to a systemic signaling gene known as FLOWERING LOCUS T (FT). In long-day flowering plants, FT is expressed in the leaves on long days. The protein travels through the phloem to the shoot apical meristem, where it induces flower determination...
December 2016: Plant Reproduction
https://www.readbyqxmd.com/read/27833998/functional-conservation-and-divergence-of-five-sepallata-like-genes-from-a-basal-eudicot-tree-platanus-acerifolia
#8
Sisi Zhang, Shunjiao Lu, Shuangshuang Yi, Hongji Han, Lei Liu, Jiaqi Zhang, Manzhu Bao, Guofeng Liu
Five SEP -like genes were cloned and identified from Platanus acerifolia through the analysis of expression profiles, protein-protein interaction patterns, and transgenic phenotypes, which suggested that they play conservative and diverse functions in floral initiation and development, fruit development, bud growth, and dormancy. SEPALLATA (SEP) genes have been well characterized in core eudicots and some monocots, and they play important and diverse roles in plant development, including flower meristem initiation, floral organ identity, and fruit development and ripening...
November 11, 2016: Planta
https://www.readbyqxmd.com/read/27833615/morphological-characterization-and-gene-expression-profiling-during-bud-development-in-a-tropical-perennial-litchi-chinensis-sonn
#9
Huifen Zhang, Hua Li, Biao Lai, Haoqiang Xia, Huicong Wang, Xuming Huang
Tropical evergreen perennials undergo recurrent flush growth, and their terminal buds alternate between growth and dormancy. In sharp contrast to the intensive studies on bud development in temperate deciduous trees, there is little information about bud development regulation in tropical trees. In this study, litchi (Litchi chinensis Sonn.) was used as a model tropical perennial for morphological characterization and transcriptomic analysis of bud development. Litchi buds are naked with apical meristem embraced by rudimentary leaves, which are brown at dormant stage (Stage I)...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27824063/auxin-flow-mediated-competition-between-axillary-buds-to-restore-apical-dominance
#10
Jozef Balla, Zuzana Medveďová, Petr Kalousek, Natálie Matiješčuková, Jiří Friml, Vilém Reinöhl, Stanislav Procházka
Apical dominance is one of the fundamental developmental phenomena in plant biology, which determines the overall architecture of aerial plant parts. Here we show apex decapitation activated competition for dominance in adjacent upper and lower axillary buds. A two-nodal-bud pea (Pisum sativum L.) was used as a model system to monitor and assess auxin flow, auxin transport channels, and dormancy and initiation status of axillary buds. Auxin flow was manipulated by lateral stem wounds or chemically by auxin efflux inhibitors 2,3,5-triiodobenzoic acid (TIBA), 1-N-naphtylphtalamic acid (NPA), or protein synthesis inhibitor cycloheximide (CHX) treatments, which served to interfere with axillary bud competition...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27815222/reorganization-of-plasma-membrane-lipid-domains-during-conidial-germination
#11
Filipa C Santos, Andreia S Fernandes, Catarina A C Antunes, Filipe P Moreira, Arnaldo Videira, H Susana Marinho, Rodrigo F M de Almeida
Neurospora crassa, a filamentous fungus, in the unicellular conidial stage has ideal features to study sphingolipid (SL)-enriched domains, which are implicated in fundamental cellular processes ranging from antifungal resistance to apoptosis. Several changes in lipid metabolism and in the membrane composition of N. crassa occur during spore germination. However, the biophysical impact of those changes is unknown. Thus, a biophysical study of N. crassa plasma membrane, particularly SL-enriched domains, and their dynamics along conidial germination is prompted...
February 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27761075/induction-subculture-cycle-and-regeneration-of-callus-in-safed-musli-chlorophytum-borivilianum-using-different-types-of-phytohormones
#12
Jaafar Juju Nakasha, Uma Rani Sinniah, Nurashikin Kemat, Kumara Swamy Mallappa
BACKGROUND: Chlorophytum borivilianum is an industrially valued medicinal crop. Propagation through seeds is not feasible because of low germination percentage and long dormancy period. Therefore, callus culture and plant regeneration can be an alternative to improve this crop production. Also, callus can serve as an alternative source of bioactive compounds. OBJECTIVE: To evaluate the effect of different phytohormones on callus induction, subculture cycle, and regeneration studies of callus in C...
July 2016: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/27746694/in%C3%A2-vitro-grown-thickened-taproots-a-new-type-of-soil-transplanting-source-in-panax-ginseng
#13
Jong Youn Kim, Dong Hwi Kim, Young Chang Kim, Kee Hong Kim, Jung Yeon Han, Yong Eui Choi
BACKGROUND: The low survival rate of in vitro regenerated Panax ginseng plantlets after transfer to soil is the main obstacle for their successful micropropagation and molecular breeding. In most cases, young plantlets converted from somatic embryos are transferred to soil. METHODS: In vitro thickened taproots, which were produced after prolonged culture of ginseng plantlets, were transferred to soil. RESULTS: Taproot thickening of plantlets occurred near hypocotyl and primary roots...
October 2016: Journal of Ginseng Research
https://www.readbyqxmd.com/read/27697786/axillary-buds-are-dwarfed-shoots-that-tightly-regulate-ga-pathway-and-ga-inducible-1-3-%C3%AE-glucanase-genes-during-branching-in-hybrid-aspen
#14
Päivi L H Rinne, Laju K Paul, Jorma Vahala, Jaakko Kangasjärvi, Christiaan van der Schoot
Axillary buds (AXBs) of hybrid aspen (Populus tremula×P. tremuloides) contain a developing dwarfed shoot that becomes para-dormant at the bud maturation point. Para-dormant AXBs can grow out after stem decapitation, while dormant AXBs pre-require long-term chilling to release them from dormancy. The latter is mediated by gibberellin (GA)-regulated 1,3-β-glucanases, but it is unknown if GA is also important in the development, activation, and outgrowth of para-dormant AXBs. The present data show that para-dormant AXBs up-regulate GA receptor genes during their maturation, but curtail GA biosynthesis by down-regulating the rate-limiting GIBBERELLIN 3-OXIDASE2 (GA3ox2), which is characteristically expressed in the growing apex...
November 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27627883/hydrogen-cyanamide-breaks-grapevine-bud-dormancy-in-the-summer-through-transient-activation-of-gene-expression-and-accumulation-of-reactive-oxygen-and-nitrogen-species
#15
Boonyawat Sudawan, Chih-Sheng Chang, Hsiu-Fung Chao, Maurice S B Ku, Yung-Fu Yen
BACKGROUND: Hydrogen cyanamide (HC) and pruning (P) have frequently been used to break dormancy in grapevine floral buds. However, the exact underlying mechanism remains elusive. This study aimed to address the early mode of action of these treatments on accumulation of reactive oxygen species (ROS) and reactive nitrogen species (RNS) and expression of related genes in the dormancy breaking buds of grapevine in the summer. RESULTS: The budbreak rates induced by pruning (P), hydrogen cyanamide (HC), pruning plus hydrogen cyanamide (PHC) and water (control) after 8 days were 33, 53, 95, and 0 %, respectively...
2016: BMC Plant Biology
https://www.readbyqxmd.com/read/27558777/quantitative-proteomic-comparison-of-stationary-g0-phase-cells-and-tetrads-in-budding-yeast
#16
Ravinder Kumar, Sanjeeva Srivastava
Most of the microbial cells on earth under natural conditions exist in a dormant condition, commonly known as quiescent state. Quiescent cells exhibit low rates of transcription and translation suggesting that cellular abundance of proteins may be similar in quiescent cells. Therefore, this study aim to compare the proteome of budding yeast cells from two quiescent states viz. stationary phase/G0 and tetrads. Using iTRAQ (isobaric tag for relative and absolute quantitation) based quantitative proteomics we identified 289 proteins, among which around 40 proteins exhibited ±1...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27557329/change-in-auxin-and-cytokinin-levels-coincides-with-altered-expression-of-branching-genes-during-axillary-bud-outgrowth-in-chrysanthemum
#17
Robrecht Dierck, Ellen De Keyser, Jan De Riek, Emmy Dhooghe, Johan Van Huylenbroeck, Els Prinsen, Dominique Van Der Straeten
In the production and breeding of Chrysanthemum sp., shoot branching is an important quality aspect as the outgrowth of axillary buds determines the final plant shape. Bud outgrowth is mainly controlled by apical dominance and the crosstalk between the plant hormones auxin, cytokinin and strigolactone. In this work the hormonal and genetic regulation of axillary bud outgrowth was studied in two differently branching cut flower Chrysanthemum morifolium (Ramat) genotypes. C17 is a split-type which forms an inflorescence meristem after a certain vegetative period, while C18 remains vegetative under long day conditions...
2016: PloS One
https://www.readbyqxmd.com/read/27449791/the-joint-influence-of-photoperiod-and-temperature-during-growth-cessation-and-development-of-dormancy-in-white-spruce-picea-glauca
#18
Jill A Hamilton, Walid El Kayal, Ashley T Hart, Daniel E Runcie, Adriana Arango-Velez, Janice E K Cooke
Timely responses to environmental cues enable the synchronization of phenological life-history transitions essential for the health and survival of north-temperate and boreal tree species. While photoperiodic cues will remain persistent under climate change, temperature cues may vary, contributing to possible asynchrony in signals influencing developmental and physiological transitions essential to forest health. Understanding the relative contribution of photoperiod and temperature as determinants of the transition from active growth to dormancy is important for informing adaptive forest management decisions that consider future climates...
November 2016: Tree Physiology
https://www.readbyqxmd.com/read/27396131/-assessment-on-the-yield-loss-risk-of-longan-caused-by-cold-damage-in-south-china
#19
Jun-fang Zhao, Hui-kang Yu
Using daily climate variables gathered from 64 meteorological stations in South China from 1961 to 2012, recognized hazard indicators about disaster grades of cold damage for longan, and methods on agricultural meteorological disasters risk and simulation technology, the yield loss risks of longan caused by cold damage in South China during different developmental periods were assessed. The results showed that during the period of physiologic differentiation of flower bud, the disasters of longan affected by mild cold damage in South China were the most common, followed by severe cold damage and moderate cold damage...
February 2016: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/27379108/flood-ring-formation-and-root-development-in-response-to-experimental-flooding-of-young-quercus-robur-trees
#20
Paul Copini, Jan den Ouden, Elisabeth M R Robert, Jacques C Tardif, Walter A Loesberg, Leo Goudzwaard, Ute Sass-Klaassen
Spring flooding in riparian forests can cause significant reductions in earlywood-vessel size in submerged stem parts of ring-porous tree species, leading to the presence of 'flood rings' that can be used as a proxy to reconstruct past flooding events, potentially over millennia. The mechanism of flood-ring formation and the relation with timing and duration of flooding are still to be elucidated. In this study, we experimentally flooded 4-year-old Quercus robur trees at three spring phenophases (late bud dormancy, budswell, and internode expansion) and over different flooding durations (2, 4, and 6 weeks) to a stem height of 50 cm...
2016: Frontiers in Plant Science
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