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Horticulture Research

Yachao Mao, Jing Sun, Peipei Cao, Rong Zhang, Qike Fu, Sumei Chen, Fadi Chen, Jiafu Jiang
As the junction of floral development pathways, the FLOWERING LOCUS T (FT) protein called 'florigen' plays an important role in the process of plant flowering through signal integration. We isolated four transcripts encoding different isoforms of a FT orthologous gene CmFTL1, from Chrysanthemum morifolium cultivar 'Jimba'. Sequence alignments suggested that the four transcripts are related to the intron 1. Expression analysis showed that four alternative splicing (AS) forms of CmFTL1 varied depending on the developmental stage of the flower...
2016: Horticulture Research
Erica A Di Pierro, Luca Gianfranceschi, Mario Di Guardo, Herma Jj Koehorst-van Putten, Johannes W Kruisselbrink, Sara Longhi, Michela Troggio, Luca Bianco, Hélène Muranty, Giulia Pagliarani, Stefano Tartarini, Thomas Letschka, Lidia Lozano Luis, Larisa Garkava-Gustavsson, Diego Micheletti, Marco Cam Bink, Roeland E Voorrips, Ebrahimi Aziz, Riccardo Velasco, François Laurens, W Eric van de Weg
Quantitative trait loci (QTL) mapping approaches rely on the correct ordering of molecular markers along the chromosomes, which can be obtained from genetic linkage maps or a reference genome sequence. For apple (Malus domestica Borkh), the genome sequence v1 and v2 could not meet this need; therefore, a novel approach was devised to develop a dense genetic linkage map, providing the most reliable marker-loci order for the highest possible number of markers. The approach was based on four strategies: (i) the use of multiple full-sib families, (ii) the reduction of missing information through the use of HaploBlocks and alternative calling procedures for single-nucleotide polymorphism (SNP) markers, (iii) the construction of a single backcross-type data set including all families, and (iv) a two-step map generation procedure based on the sequential inclusion of markers...
2016: Horticulture Research
A-F Adam-Blondon, M Alaux, C Pommier, D Cantu, Z-M Cheng, G R Cramer, C Davies, S Delrot, L Deluc, G Di Gaspero, J Grimplet, A Fennell, J P Londo, P Kersey, F Mattivi, S Naithani, P Neveu, M Nikolski, M Pezzotti, B I Reisch, R Töpfer, M A Vivier, D Ware, H Quesneville
Viticulture, like other fields of agriculture, is currently facing important challenges that will be addressed only through sustained, dedicated and coordinated research. Although the methods used in biology have evolved tremendously in recent years and now involve the routine production of large data sets of varied nature, in many domains of study, including grapevine research, there is a need to improve the findability, accessibility, interoperability and reusability (FAIR-ness) of these data. Considering the heterogeneous nature of the data produced, the transnational nature of the scientific community and the experience gained elsewhere, we have formed an open working group, in the framework of the International Grapevine Genome Program (www...
2016: Horticulture Research
Xuan Gao, Aaron E Walworth, Charity Mackie, Guo-Qing Song
Flowering locus T (FT) is a primary integrator in the regulation of plant flowering. Overexpressing a blueberry (Vaccinium corymbosum L.) FT gene (VcFT) (herein VcFT-OX) resulted in early flowering and dwarfing in 'Aurora' plants (herein 'VcFT-Aurora'). In this study, we found that VcFT-OX reduced shoot regeneration from leaf explants. To investigate the potential roles of the phytohormone pathway genes associated with VcFT-OX, differentially expressed (DE) genes in leaf tissues of 'VcFT-Aurora' plants were annotated and analyzed using non-transgenic 'Aurora' plants as a control...
2016: Horticulture Research
Mirjana Vukosavljev, Paul Arens, Roeland E Voorrips, Wendy Pc van 't Westende, G D Esselink, Peter M Bourke, Peter Cox, W Eric van de Weg, Richard Gf Visser, Chris Maliepaard, Marinus Jm Smulders
Dense genetic maps create a base for QTL analysis of important traits and future implementation of marker-assisted breeding. In tetraploid rose, the existing linkage maps include <300 markers to cover 28 linkage groups (4 homologous sets of 7 chromosomes). Here we used the 68k WagRhSNP Axiom single-nucleotide polymorphism (SNP) array for rose, in combination with SNP dosage calling at the tetraploid level, to genotype offspring from the garden rose cultivar 'Red New Dawn'. The offspring proved to be not from a single bi-parental cross...
2016: Horticulture Research
Ahmed Abdelfattah, Michael Wisniewski, Samir Droby, Leonardo Schena
The fungal diversity in harvested apples from organic or conventional management practices was analyzed in different fruit locations (stem end, calyx end, peel, and wounded flesh) shortly after fruit purchase (T1) and after 2 weeks of storage (T5). A total of 5,760,162 high-quality fungal sequences were recovered and assigned to 8,504 Operational Taxonomic Units. Members of the phylum Ascomycota were dominant in all samples and accounted for 91.6% of the total number of detected sequences. This was followed by Basidiomycota (8%), Chytridiomycota (0...
2016: Horticulture Research
Joshua R Widhalm, David Rhodes
The 1,4-naphthoquinones (1,4-NQs) are a diverse group of natural products found in every kingdom of life. Plants, including many horticultural species, collectively synthesize hundreds of specialized 1,4-NQs with ecological roles in plant-plant (allelopathy), plant-insect and plant-microbe interactions. Numerous horticultural plants producing 1,4-NQs have also served as sources of traditional medicines for hundreds of years. As a result, horticultural species have been at the forefront of many basic studies conducted to understand the metabolism and function of specialized plant 1,4-NQs...
2016: Horticulture Research
Lindsay E Wyatt, Susan R Strickler, Lukas A Mueller, Michael Mazourek
Both the fruit mesocarp and the seeds of winter squash can be used for consumption, although the focus of breeding efforts varies by cultivar. Cultivars bred for fruit consumption are selected for fruit mesocarp quality traits such as carotenoid content, percent dry matter, and percent soluble solids, while these traits are essentially ignored in oilseed pumpkins. To compare fruit development in these two types of squash, we sequenced the fruit transcriptome of two cultivars bred for different purposes: an acorn squash, 'Sweet REBA', and an oilseed pumpkin, 'Lady Godiva'...
2016: Horticulture Research
Kendra A McClure, Kyle M Gardner, Peter Ma Toivonen, Cheryl R Hampson, Jun Song, Charles F Forney, John DeLong, Istvan Rajcan, Sean Myles
The apple (Malus×domestica Borkh.) is one of the world's most widely grown and valuable fruit crops. With demand for apples year round, storability has emerged as an important consideration for apple breeding programs. Soft scald is a cold storage-related disorder that results in sunken, darkened tissue on the fruit surface. Apple breeders are keen to generate new cultivars that do not suffer from soft scald and can thus be marketed year round. Traditional breeding approaches are protracted and labor intensive, and therefore marker-assisted selection (MAS) is a valuable tool for breeders...
2016: Horticulture Research
Danielle Costenaro da Silva, Vítor da Silveira Falavigna, Marianna Fasoli, Vanessa Buffon, Diogo Denardi Porto, Georgios Joannis Pappas, Mario Pezzotti, Giancarlo Pasquali, Luís Fernando Revers
The Dof (DNA-binding with one finger) protein family spans a group of plant transcription factors involved in the regulation of several functions, such as plant responses to stress, hormones and light, phytochrome signaling and seed germination. Here we describe the Dof-like gene family in grapevine (Vitis vinifera L.), which consists of 25 genes coding for Dof. An extensive in silico characterization of the VviDofL gene family was performed. Additionally, the expression of the entire gene family was assessed in 54 grapevine tissues and organs using an integrated approach with microarray (cv Corvina) and real-time PCR (cv Pinot Noir) analyses...
2016: Horticulture Research
Amanda M Hulse-Kemp, Hamid Ashrafi, Joerg Plieske, Jana Lemm, Kevin Stoffel, Theresa Hill, Hartmut Luerssen, Charit L Pethiyagoda, Cindy T Lawley, Martin W Ganal, Allen Van Deynze
The Capsicum genus (Pepper) is a part of the Solanacae family. It has been important in many cultures worldwide for its key nutritional components and uses as spices, medicines, ornamentals and vegetables. Worldwide population growth is associated with demand for more nutritionally valuable vegetables while contending with decreasing resources and available land. These conditions require increased efficiency in pepper breeding to deal with these imminent challenges. Through resequencing of inbred lines we have completed a valuable haplotype map (HapMap) for the pepper genome based on single-nucleotide polymorphisms (SNP)...
2016: Horticulture Research
Dong Xiao, Shi-Tuo Liu, Yan-Ping Wei, Dao-Yun Zhou, Xi-Lin Hou, Ying Li, Chun-Mei Hu
Non-heading Chinese cabbage (Brassica rapa ssp. chinensis) is one of the main green leafy vegetables in the world, especially in China, with significant economic value. Hyaloperonospora parasitica is a fungal pathogen responsible for causing downy mildew disease in Chinese cabbage, which greatly affects its production. The objective of this study was to identify transcriptionally regulated genes during incompatible interactions between non-heading Chinese cabbage and H. parasitica using complementary DNA-amplified fragment length polymorphism (cDNA-AFLP)...
2016: Horticulture Research
Kevin M Folta, Harry J Klee
Plant breeders have been extremely successful at driving genetic improvements in crops. However, 'improvements' are truly a question of perspective. Over the last one-hundred years most plant genetic innovations have been driven by industry demand. Larger fruits, heavier yields, uniformity, increased resistance to disease and better shipping quality are just a few of the traits that have ensured profits on the farm and affordable food for consumers. However, these milestones have come at the expense of sensory qualities, which have been sacrificed in exchange for practical production objectives...
2016: Horticulture Research
Lei Zhang, Yan-Shuai Xu, Yue Jia, Ji-Yuan Wang, Yue Yuan, Yang Yu, Jian-Min Tao
Lateral floral clusters were removed from the main axis of the floral clusters of 'Houman' grape plants, leaving only 3-5-cm-long region of flowers at the end of the central axis. The floral clusters were pruned at 7 days prior to flowering. The effect of the pruning on fruit quality was assessed by determining the composition and levels of anthocyanins in the fruit and anthocyanin-related gene expression. Results indicated that floral cluster pruning significantly improved the quality of the fruit by increasing berry size, fruit weight and the total content of soluble solids...
2016: Horticulture Research
Krishna Bhattarai, Frank J Louws, John D Williamson, Dilip R Panthee
Plants depend on innate immune responses to retard the initial spread of pathogens entering through stomata, hydathodes or injuries. These responses are triggered by conserved patterns in pathogen-encoded molecules known as pathogen-associated molecular patterns (PAMPs). Production of reactive oxygen species (ROS) is one of the first responses, and the resulting 'oxidative burst' is considered to be a first line of defense. In this study, we conducted association analyses between ROS production and bacterial spot (BS; Xanthomonas spp...
2016: Horticulture Research
Stefano Pessina, Luisa Lenzi, Michele Perazzolli, Manuela Campa, Lorenza Dalla Costa, Simona Urso, Giampiero Valè, Francesco Salamini, Riccardo Velasco, Mickael Malnoy
Erysiphe necator is the causal agent of powdery mildew (PM), one of the most destructive diseases of grapevine. PM is controlled by sulfur-based and synthetic fungicides, which every year are dispersed into the environment. This is why PM-resistant varieties should become a priority for sustainable grapevine and wine production. PM resistance can be achieved in other crops by knocking out susceptibility S-genes, such as those residing at genetic loci known as MLO (Mildew Locus O). All MLO S-genes of dicots belong to the phylogenetic clade V, including grapevine genes VvMLO7, 11 and 13, which are upregulated during PM infection, and VvMLO6, which is not upregulated...
2016: Horticulture Research
Supakan Rattanakan, Iniga George, Paul A Haynes, Grant R Cramer
In a previous transcriptomic analysis, abscisic acid (ABA) was found to affect the abundance of a number of transcripts in leaves of Cabernet Sauvignon grapevines with roots that had been exposed to 10 μm ABA for 2 h. Other work has indicated that ABA affects protein abundance and protein phosphorylation as well. In this study we investigated changes in protein abundance and phosphorylation of Cabernet Sauvignon grapevine leaves. Protein abundance was assessed by both label-free and isobaric-label quantitive proteomic methods...
2016: Horticulture Research
L Brzozowski, B M Leckie, J Gardner, M P Hoffmann, M Mazourek
The striped cucumber beetle (Acalymma vittatum (F.)) is a destructive pest of cucurbit crops, and management could be improved by host plant resistance, especially in organic farming systems. However, despite the variation in striped cucumber beetle preference observed within the economically important species, Cucurbita pepo L., plant breeders and entomologists lacked a simple framework to classify and exploit these differences. This study used recent phylogenetic evidence and bioassays to organize striped cucumber beetle preference within C...
2016: Horticulture Research
Yingde Zhu, Hui Li, Sarabjit Bhatti, Suping Zhou, Yong Yang, Tara Fish, Theodore W Thannhauser
Single-cell-type proteomics provides the capability to revealing the genomic and proteomics information at cell-level resolution. However, the methodology for this type of research has not been well-developed. This paper reports developing a workflow of laser capture microdissection (LCM) followed by gel-liquid chromatography-tandem mass spectrometry (GeLC-MS/MS)-based proteomics analysis for the identification of proteomes contained in individual cell layers of tomato roots. Thin-sections (~10-μm thick, 10 sections per root tip) were prepared for root tips of tomato germinating seedlings...
2016: Horticulture Research
Shanshan Yang, Jonathan Fresnedo-Ramírez, Minghui Wang, Linda Cote, Peter Schweitzer, Paola Barba, Elizabeth M Takacs, Matthew Clark, James Luby, David C Manns, Gavin Sacks, Anna Katharine Mansfield, Jason Londo, Anne Fennell, David Gadoury, Bruce Reisch, Lance Cadle-Davidson, Qi Sun
Marker-assisted selection (MAS) is often employed in crop breeding programs to accelerate and enhance cultivar development, via selection during the juvenile phase and parental selection prior to crossing. Next-generation sequencing and its derivative technologies have been used for genome-wide molecular marker discovery. To bridge the gap between marker development and MAS implementation, this study developed a novel practical strategy with a semi-automated pipeline that incorporates trait-associated single nucleotide polymorphism marker discovery, low-cost genotyping through amplicon sequencing (AmpSeq) and decision making...
2016: Horticulture Research
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