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https://www.readbyqxmd.com/read/28813015/transcriptional-responses-of-creeping-bentgrass-to-2-3-butanediol-a-bacterial-volatile-compound-bvc-analogue
#1
Yi Shi, Kuiju Niu, Bingru Huang, Wenhui Liu, Huiling Ma
Bacterial volatile compounds (BVCs) have been reported to enhance plant growth and elicit plant defenses against fungal infection and insect damage. The objective of this study was to determine transcriptomic changes in response to synthetic BVC that could be associated with plant resistance to Rhizoctonia solani in creeping bentgrass. The 2,3-butanediol (BD) (250 µM) was sprayed on creeping bentgrass leaves grown in jam jars. The result showed that synthetic BD induced plant defense against R. solani for creeping bentgrass...
August 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28813005/identification-and-functional-divergence-analysis-of-wox-gene-family-in-paper-mulberry
#2
Feng Tang, Naizhi Chen, Meiling Zhao, Yucheng Wang, Ruiping He, Xianjun Peng, Shihua Shen
The WOX (WUSCHEL-related homeobox) is a plant-specific transcription factor involved in plant development and stress response. However, few studies have been reported on the WOX gene in woody plants. In this study, 10 BpWOX genes were isolated from paper mulberry by RACE-PCR and categorized into three clades through phylogenetic analysis, ancient, intermediate and WUS clade. Among them, five members had the transcriptional activity detected by yeast one-hybrid and seven were uniquely localized to the nucleus through green fluorescent protein (GFP) observation...
August 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28811757/cyclic-dipeptides-from-bacillus-vallismortis-bs07-require-key-components-of-plant-immunity-to-induce-disease-resistance-in-arabidopsis-against-pseudomonas-infection
#3
Seong Woo Noh, Rira Seo, Jung-Kwon Park, Md Maniruzzaman Manir, Kyungseok Park, Mee Kyung Sang, Surk-Sik Moon, Ho Won Jung
Cyclic dipeptides (CDPs) are one of the simplest compounds produced by living organisms. Plant-growth promoting rhizobacteria (PGPRs) also produce CDPs that can induce disease resistance. Bacillus vallismortis strain BS07 producing various CDPs has been evaluated as a potential biocontrol agent against multiple plant pathogens in chili pepper. However, plant signal pathway triggered by CDPs has not been fully elucidated yet. Here we introduce four CDPs, cyclo(Gly-L-Pro) previously identified from Aspergillus sp...
August 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/28811287/a-plant-effector-triggered-immunity-signaling-sector-is-inhibited-by-pattern-triggered-immunity
#4
Noriyuki Hatsugai, Daisuke Igarashi, Keisuke Mase, You Lu, Yayoi Tsuda, Suma Chakravarthy, Hai-Lei Wei, Joseph W Foley, Alan Collmer, Jane Glazebrook, Fumiaki Katagiri
Since signaling machineries for two modes of plant-induced immunity, pattern-triggered immunity (PTI) and effector-triggered immunity (ETI), extensively overlap, PTI and ETI signaling likely interact. In an Arabidopsis quadruple mutant, in which four major sectors of the signaling network, jasmonate, ethylene, PAD4, and salicylate, are disabled, the hypersensitive response (HR) typical of ETI is abolished when the Pseudomonas syringae effector AvrRpt2 is bacterially delivered but is intact when AvrRpt2 is directly expressed in planta These observations led us to discovery of a network-buffered signaling mechanism that mediates HR signaling and is strongly inhibited by PTI signaling...
August 15, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28811017/improved-methodology-for-analysis-of-multiple-phytohormones-using-sequential-magnetic-solid-phase-extraction-coupled-with-liquid-chromatography-tandem-mass-spectrometry
#5
Xiao-Tong Luo, Bao-Dong Cai, Xi Chen, Yu-Qi Feng
Phytohormones are special small molecules that play important role in plant growth and development at trace levels. Quantification of multiple phytohormones will be great helpful for researches about cross-talks that plant hormones regulate the responses of plants against both biotic and abiotic stresses by means of synergistic or antagonistic interactions. In the current study, we developed a method for profiling of phytohormones in one small sample, including indole-3-acetic acid, abscisic acid, jasmonic acid, gibberellins, cytokinins and brassinosteroids...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28808380/identification-and-analysis-of-jasmonate-pathway-genes-in-coffea-canephora-robusta-coffee-by-in-silico-approach
#6
Kosaraju Bharathi, H L Sreenath
BACKGROUND: Coffea canephora is the commonly cultivated coffee species in the world along with Coffea arabica. Different pests and pathogens affect the production and quality of the coffee. Jasmonic acid (JA) is a plant hormone which plays an important role in plants growth, development, and defense mechanisms, particularly against insect pests. The key enzymes involved in the production of JA are lipoxygenase, allene oxide synthase, allene oxide cyclase, and 12-oxo-phytodienoic reductase...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28805482/cyclophilin-20-3-is-positioned-as-a-regulatory-hub-between-light-dependent-redox-and-12-oxo-phytodienoic-acid-signaling
#7
Hoon Cheong, Izailda Barbosa Dos Santos, Wenshan Liu, Heather N Gosse, Sang-Wook Park
The jasmonate family of phytohormones plays central roles in plant development and stress acclimation. However, the regulatory modes of their signaling circuitry remain largely unknown. Here we describe that cyclophilin 20-3 (CYP20-3), a binding protein of (+)-12-oxo-phytodienoic acid (OPDA), crisscrosses stress responses with light-dependent redox reactions, which fine-tunes the activity of key enzymes in the plastid photosynthetic carbon assimilation and sulfur assimilation pathways. Under stressed states, OPDA - accumulated in the chloroplasts - binds and promotes CYP20-3 to transfer electron (e(-)) from thioredoxins (i...
August 14, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28805339/what-happens-in-the-pith-stays-in-the-pith-tissue-localized-defense-responses-facilitate-chemical-niche-differentiation-between-two-spatially-separated-herbivores
#8
Gisuk Lee, Youngsung Joo, Sang-Gyu Kim, Ian T Baldwin
Herbivore attack is known to elicit systemic defense responses that spread throughout the hostplant and influence the performance of other herbivores. While these plant-mediated indirect competitive interactions are well-described, and the co-existence of herbivores from different feeding guilds is common, the mechanisms of co-existence are poorly understood. In both field and glasshouse experiments with a native tobacco, Nicotiana attenuata, we found no evidence of negative interactions when plants were simultaneously attacked by two spatially separated herbivores: a leaf chewer Manduca sexta and a stem borer Trichobaris mucorea...
August 14, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28803341/gypsy-moth-herbivory-induced-volatiles-and-reduced-parasite-attachment-to-cranberry-hosts
#9
Muvari C Tjiurutue, Hilary A Sandler, Monica F Kersch-Becker, Nina Theis, Lynn S Adler
Interactions between species can have cascading effects that shape subsequent interactions. For example, herbivory can induce plant defenses that affect subsequent interactions with herbivores, pathogens, mycorrhizae, and pollinators. Parasitic plants are present in most ecosystems, and play important roles in structuring communities. However, the effects of host herbivory on parasitic plants, and the potential mechanisms underlying such effects, are not well known. We conducted a greenhouse study to ask whether gypsy moth (Lymantria dispar) damage, host cultivar, and their interaction affected preference of the stem parasite dodder (Cuscuta spp...
August 12, 2017: Oecologia
https://www.readbyqxmd.com/read/28801786/the-grapevine-vvcax3-is-a-cation-h-exchanger-involved-in-vacuolar-ca-2-homeostasis
#10
Viviana Martins, Filipa Carneiro, Carlos Conde, Mariana Sottomayor, Hernâni Gerós
The grapevine VvCAX3 mediates calcium transport in the vacuole and is mostly expressed in green grape berries and upregulated by Ca (2+) , Na (+) and methyl jasmonate. Calcium is an essential plant nutrient with important regulatory and structural roles in the berries of grapevine (Vitis vinifera L.). On the other hand, the proton-cation exchanger CAX proteins have been shown to impact Ca(2+) homeostasis with important consequences for fruit integrity and resistance to biotic/abiotic stress. Here, the CAX gene found in transcriptomic databases as having one of the highest expressions in grapevine tissues, VvCAX3, was cloned and functionally characterized...
August 11, 2017: Planta
https://www.readbyqxmd.com/read/28793870/erratum-to-transcriptional-responses-and-flavor-volatiles-biosynthesis-in-methyl-jasmonate-treated-tea-leaves
#11
Jiang Shi, ChengYing Ma, DanDan Qi, HaiPeng Lv, Ting Yang, QunHua Peng, ZongMao Chen, Zhi Lin
No abstract text is available yet for this article.
August 9, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28791296/metabolomics-and-proteomics-of-brassica-napus-guard-cells-in-response-to-low-co2
#12
Sisi Geng, Bing Yu, Ning Zhu, Craig Dufresne, Sixue Chen
Stomatal guard cell response to various stimuli is an important process that balances plant carbon dioxide (CO2) uptake and water transpiration. Elevated CO2 induces stomatal closure, while low CO2 promotes stomatal opening. The signaling process of elevated CO2 induced stomatal closure has been extensively studied in recent years. However, the mechanism of low CO2 induced stomatal opening is not fully understood. Here we report metabolomic and proteomic responses of Brassica napus guard cells to low CO2 using hyphenated mass spectrometry technologies...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28775155/peroxisomal-plant-metabolism-an-update-on-nitric-oxide-ca-2-and-the-nadph-recycling-network
#13
REVIEW
Francisco J Corpas, Juan B Barroso
Plant peroxisomes are recognized organelles that - with their capacity to generate greater amounts of H2O2 than other subcellular compartments - have a remarkable oxidative metabolism. However, over the last 15 years, new information has shown that plant peroxisomes contain other important molecules and enzymes, including nitric oxide (NO), peroxynitrite, a NADPH-recycling system, Ca(2+) and lipid-derived signals, such as jasmonic acid (JA) and nitro-fatty acid (NO2-FA). This highlights the potential for complex interactions within the peroxisomal nitro-oxidative metabolism, which also affects the status of the cell and consequently its physiological processes...
August 3, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28771548/differentially-expressed-genes-in-mycorrhized-and-nodulated-roots-of-common-bean-are-associated-with-defense-cell-wall-architecture-n-metabolism-and-p-metabolism
#14
Kalpana Nanjareddy, Manoj-Kumar Arthikala, Brenda-Mariana Gómez, Lourdes Blanco, Miguel Lara
Legumes participate in two important endosymbiotic associations, with phosphorus-acquiring arbuscular mycorrhiza (AM, soil fungi) and with nitrogen-fixing bacterial rhizobia. These divergent symbionts share a common symbiotic signal transduction pathway that facilitates the establishment of mycorrhization and nodulation in legumes. However, the unique and shared downstream genes essential for AM and nodule development have not been identified in crop legumes. Here, we used ion torrent next-generation sequencing to perform comparative transcriptomics of common bean (Phaseolus vulgaris) roots colonized by AM or rhizobia...
2017: PloS One
https://www.readbyqxmd.com/read/28770337/overexpression-of-biologically-safe-rorippa-indica-defensin-enhances-aphid-tolerance-in-brassica-juncea
#15
Poulami Sarkar, Kuladip Jana, Samir Ranjan Sikdar
Transgenic mustard plants ( Brassica juncea ) expressing non-allergenic and biologically safe RiD peptide show higher tolerance against Lipaphis erysimi. Rorippa indica defensin (RiD) has previously been reported as a novel insecticidal protein derived from a wild crucifer Rorippa indica. RiD was found to have an effective insecticidal property against mustard aphid, Lipaphis erysimi. In the present study, RiD was highly upregulated in R. indica during aphid infestation initiating a defense system mediated by jasmonic acid (JA), but not by salicylic acid (SA)/abscisic acid (ABA)...
August 2, 2017: Planta
https://www.readbyqxmd.com/read/28769974/flavonoid-accumulation-plays-an-important-role-in-the-rust-resistance-of-malus-plant-leaves
#16
Yanfen Lu, Qi Chen, Yufen Bu, Rui Luo, Suxiao Hao, Jie Zhang, Ji Tian, Yuncong Yao
Cedar-apple rust (Gymnosporangium yamadai Miyabe) is a fungal disease that causes substantial injury to apple trees and results in fruit with reduced size and quality and a lower commercial value. The molecular mechanisms underlying the primary and secondary metabolic effects of rust spots on the leaves of Malus apple cultivars are poorly understood. Using HPLC, we found that the contents of flavonoid compounds, especially anthocyanin and catechin, were significantly increased in rust-infected symptomatic tissue (RIT)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769965/silicon-supplementation-alters-the-composition-of-herbivore-induced-plant-volatiles-and-enhances-attraction-of-parasitoids-to-infested-rice-plants
#17
Jian Liu, Jiwei Zhu, Pengjun Zhang, Liwei Han, Olivia L Reynolds, Rensen Zeng, Jinhong Wu, Yue Shao, Minsheng You, Geoff M Gurr
Silicon (Si) is important in plant defenses that operate in a direct manner against herbivores, and work in rice (Oryza sativa) has established that this is mediated by the jasmonate signaling pathway. Plant defenses also operate indirectly, by the production of herbivore induced plant volatiles (HIPVs) that attract predators and parasitoids of herbivores. These indirect defenses too are mediated by the jasmonate pathway but no earlier work has demonstrated an effect of Si on HIPVs. In this study, we tested the effect of Si supplementation versus Si deprivation to rice plants on subsequent HIPV production following feeding by the important pest, rice leaffolder (Cnaphalocrocis medinalis)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769962/global-gene-expression-analysis-reveals-crosstalk-between-response-mechanisms-to-cold-and-drought-stresses-in-cassava-seedlings
#18
Shuxia Li, Xiang Yu, Zhihao Cheng, Xiaoling Yu, Mengbin Ruan, Wenbin Li, Ming Peng
Abiotic stress negatively impacts cassava (Manihot esculenta) growth and yield. Several molecular mechanisms of plant response to cold and drought have been identified and described in the literature, however, little is known about the crosstalk of the responses of cassava to these two stresses. To elucidate this question, transcriptome analysis of cassava seedlings under cold or PEG-simulated drought stress treatment was performed. Our results showed that 6103 and 7462 transcripts were significantly regulated by cold and drought stress, respectively...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769948/transcriptome-and-metabolite-changes-during-hydrogen-cyanamide-induced-floral-bud-break-in-sweet-cherry
#19
Irina A Ionescu, Gregorio López-Ortega, Meike Burow, Almudena Bayo-Canha, Alexander Junge, Oliver Gericke, Birger L Møller, Raquel Sánchez-Pérez
Release of bud dormancy in perennial woody plants is a temperature-dependent process and thus flowering in these species is heavily affected by climate change. The lack of cold winters in temperate growing regions often results in reduced flowering and low fruit yields. This is likely to decrease the availability of fruits and nuts of the Prunus spp. in the near future. In order to maintain high yields, it is crucial to gain detailed knowledge on the molecular mechanisms controlling the release of bud dormancy...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769110/bark-and-wood-tissues-of-american-elm-exhibit-distinct-responses-to-dutch-elm-disease
#20
S M Sherif, L A Erland, M R Shukla, P K Saxena
Tolerance to Dutch elm disease (DED) has been linked to the rapid and/or high induction of disease-responsive genes after infection with the fungus Ophiostoma novo-ulmi. Although the fungal infection by O. novo-ulmi primarily takes places in xylem vessels, it is still unclear how xylem contributes to the defense against DED. Taking advantage of the easy separation of wood and bark tissues in young American elm saplings, here we show that most disease-responsive genes exhibited higher expression in wood compared to bark tissues after fungal infection...
August 2, 2017: Scientific Reports
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