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https://www.readbyqxmd.com/read/29668080/control-of-the-ethylene-signaling-pathway-prevents-plant-defenses-during-intracellular-accommodation-of-the-rhizobia
#1
Fathi Berrabah, Thierry Balliau, El Hosseyn Aït-Salem, Jeoffrey George, Michel Zivy, Pascal Ratet, Benjamin Gourion
Massive intracellular populations of symbiotic bacteria, referred to as rhizobia, are housed in legume root nodules. Little is known about the mechanisms preventing the development of defense in these organs although genes such as symCRK and DNF2 of the model legume Medicago truncatula are required for this control after rhizobial internalization in host nodule cells. Here we investigated the molecular basis of the symbiotic control of immunity. Proteomic analysis was performed to compare functional (wild-type) and defending nodules (symCRK)...
April 18, 2018: New Phytologist
https://www.readbyqxmd.com/read/29659946/ethylene-responsive-factor-erf110-mediates-ethylene-regulated-transcription-of-a-sex-determination-related-orthologous-gene-in-two-cucumis-species
#2
Qianyi Tao, Huanhuan Niu, Zhongyuan Wang, Wenhui Zhang, Hu Wang, Shenhao Wang, Xian Zhang, Zheng Li
In plants, unisexual flowers derived from developmental sex determination form separate stamens and pistils that facilitate cross pollination. In cucumber and melon, ethylene plays a key role in sex determination. Six sex determination-related genes have been identified involving in ethylene biosynthesis in these Cucumis species. The interactions among these genes are thought to involve ethylene signaling; however, the detailed regulatory mechanism remains unknown. In this study, hormone treatment and qPCR assays were used to confirm expression of these sex determination-related genes in cucumber and melon is ethylene sensitive...
April 5, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29652829/molecular-and-ultrastructural-mechanisms-underlying-yellow-dwarf-symptom-formation-in-wheat-after-infection-of-barley-yellow-dwarf-virus
#3
Wei Rong, Xindong Wang, Xifeng Wang, Sebastien Massart, Zengyan Zhang
Wheat ( Tritium aestivum L.) production is essential for global food security. Infection of barley yellow dwarf virus-GAV (BYDV-GAV) results in wheat showing leaf yellowing and plant dwarfism symptom. To explore the molecular and ultrastructural mechanisms underlying yellow dwarf symptom formation in BYDV-GAV-infected wheat, we investigated the chloroplast ultrastructure via transmission electron microscopy (TEM), examined the contents of the virus, H₂O₂, and chlorophyll in Zhong8601, and studied the comparative transcriptome through microarray analyses in the susceptible wheat line Zhong8601 after virus infection...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29650161/molecular-and-functional-characterization-of-shnac1-an-nac-transcription-factor-from-solanum-habrochaites
#4
Hui Liu, Yuhong Zhou, Hanxia Li, Taotao Wang, Junhong Zhang, Bo Ouyang, Zhibiao Ye
NAC transcription factors (TFs) are important regulators of plant adaptation to abiotic stress. In this study, we functionally characterized an NAC TF, ShNAC1, from Solanum habrochaites. ShNAC1 was up-regulated by drought, cold, and salt stresses, and it displayed lower expression at the late stage of stress treatments than its orthologous gene in S. lycopersicum. Overexpression of ShNAC1 in tomato resulted in reduced cold, drought, and salt tolerance. Additionally, ShNAC1 displayed the highest expression in senescent leaf, and overexpressing ShNAC1 accelerated salt- and dark-induced leaf senescence...
June 2018: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/29643073/the-plant-hormone-ethylene-restricts-arabidopsis-growth-via-the-epidermis
#5
Irina Ivanova Vaseva, Enas Qudeimat, Thomas Potuschak, Yunlong Du, Pascal Genschik, Filip Vandenbussche, Dominique Van Der Straeten
The gaseous hormone ethylene plays a key role in plant growth and development, and it is a major regulator of stress responses. It inhibits vegetative growth by restricting cell elongation, mainly through cross-talk with auxins. However, it remains unknown whether ethylene controls growth throughout all plant tissues or whether its signaling is confined to specific cell types. We employed a targeted expression approach to map the tissue site(s) of ethylene growth regulation. The ubiquitin E3 ligase complex containing Skp1, Cullin1, and the F-box protein EBF1 or EBF2 (SCFEBF1/2 ) target the degradation of EIN3, the master transcription factor in ethylene signaling...
April 11, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29616373/ethylene-signaling-modulates-contents-of-catechin-and-ability-of-antioxidant-in-camellia-sinensis
#6
Shun-Wun Ke, Guan-Heng Chen, Chung-Tse Chen, Jason T C Tzen, Chin-Ying Yang
BACKGROUND: Tea is one of the most popular beverages in the world. There are many secondary metabolites can be found in tea such as anthocyanins, proanthocyanidins, flavonols and catechins. These secondary metabolites in plants are proved to act protective components for human health effect. Plant hormone ethylene is considered to have an important role in regulation of plant development and signal transduction. This study evaluated the effect of ethylene signaling regulation in phenolic compounds in tea plants...
April 3, 2018: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29604166/ravl1-an-upstream-component-of-brassinosteroid-signaling-and-biosynthesis-regulates-ethylene-signaling-via-activation-of-eil1-in-rice
#7
Xiao Feng Zhu, De Peng Yuan, Chong Zhang, Tian Ya Li, Yuan Hu Xuan
Brassinosteroids (BRs) are steroid hormones that regulate several aspects of plant growth and development. Their signal is activated by the binding of BRs to the receptor BRASSINOSTEROID INSENSITIVE 1 (BRI1), which activates the transcription factors BRASSINAZOLE-RESISTANT 1 (BZR1) and BRI1-EMS-SUPPRESSOR 1 (BES1) that regulate target gene expression (Kim and Wang, 2010). More recently, the crosstalk between BRs and other hormone signaling factors has been extensively investigated, and it has been suggested that BR signaling is highly integrated with other signals to regulate plant growth and development (Wang et al, 2012)...
March 31, 2018: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/29593753/ethylene-related-gene-expression-networks-in-wood-formation
#8
Carolin Seyfferth, Bernard Wessels, Soile Jokipii-Lukkari, Björn Sundberg, Nicolas Delhomme, Judith Felten, Hannele Tuominen
Thickening of tree stems is the result of secondary growth, accomplished by the meristematic activity of the vascular cambium. Secondary growth of the stem entails developmental cascades resulting in the formation of secondary phloem outwards and secondary xylem (i.e., wood) inwards of the stem. Signaling and transcriptional reprogramming by the phytohormone ethylene modifies cambial growth and cell differentiation, but the molecular link between ethylene and secondary growth remains unknown. We addressed this shortcoming by analyzing expression profiles and co-expression networks of ethylene pathway genes using the AspWood transcriptome database which covers all stages of secondary growth in aspen ( Populus tremula ) stems...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29580214/priming-effect-of-root-applied-silicon-on-the-enhancement-of-induced-resistance-to-the-root-knot-nematode-meloidogyne-graminicola-in-rice
#9
Li-Ping Zhan, De-Liang Peng, Xu-Li Wang, Ling-An Kong, Huan Peng, Shi-Ming Liu, Ying Liu, Wen-Kun Huang
BACKGROUND: Silicon (Si) can confer plant resistance to both abiotic and biotic stress. In the present study, the priming effect of Si on rice (Oryza sativa cv Nipponbare) against the root-knot nematode Meloidogyne graminicola and its histochemical and molecular impact on plant defense mechanisms were evaluated. RESULTS: Si amendment significantly reduced nematodes in rice roots and delayed their development, while no obvious negative effect on giant cells was observed...
March 27, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29576943/molecular-cloning-and-expression-analysis-of-three-therf-s-involved-in-the-response-to-waterlogging-stress-of-taxodium-zhongshanshan406-and-subcellular-localization-of-the-gene-products
#10
Wencai Fan, Ying Yang, Zhiquan Wang, Yunlong Yin, Chaoguang Yu, Qin Shi, Jinbo Guo, Lei Xuan, Jianfeng Hua
As a subfamily of the APETALA 2/ethylene response element binding protein (AP2/EREBP) transcription factor superfamily, the ethylene response factor (ERF) is widely involved in the regulation of growth and response to various abiotic stresses in plants, and has been shown to be the main transcription factor regulating transcription of the genes related to hypoxia and waterlogging stress. In this study, three ThERF genes, with significant differences in expression profile in response to flooding stress, were identified from the transcriptomics data acquired from Taxodium hybrid 'Zhongshanshan 406' ( T...
2018: PeerJ
https://www.readbyqxmd.com/read/29565813/calcium-dependent-protein-kinase-family-genes-involved-in-ethylene-induced-natural-rubber-production-in-different-hevea-brasiliensis-cultivars
#11
Liping Zhu, Xiang Jin, Quanliang Xie, Qi Yao, Xuchu Wang, Hongbin Li
Natural rubber latex production can be improved by ethylene stimulation in the rubber tree ( Hevea brasiliensis ). However, the expression levels of most functional proteins for natural rubber biosynthesis are not induced after ethylene application, indicating that post-translational modifications, especially protein phosphorylation, may play important roles in ethylene signaling in Hevea . Here, we performed a comprehensive investigation on evolution, ethylene-induced expression and protein-protein interaction of calcium-dependent protein kinases (CPKs), an important serine/threonine protein kinase family, in Hevea ...
March 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29563566/comparative-transcriptome-analysis-reveals-phytohormone-signalings-heat-shock-module-and-ros-scavenger-mediate-the-cold-tolerance-of-rubber-tree
#12
Xiaomin Deng, Jianxiao Wang, Yan Li, Shaohua Wu, Shuguang Yang, Jinquan Chao, Yueyi Chen, Shixin Zhang, Minjing Shi, Weimin Tian
Two contrasting cold response rubber tree clones, the cold-resistant '93-114' and cold-sensitive 'Reken501', were subject to a global transcriptome response assessing via high-throughput RNA-seq technique and comprehensive bioinformatics analysis using the referenced rubber tree genome with the purpose of exploring the potential molecular cues underlying the tolerance of rubber trees to cold stress. As a result, a total of 1919 genes had significantly higher expression, while 2929 genes had significantly lower expression in '93-114' than in 'Reken501' without cold stress...
March 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29562933/microbial-modulation-of-plant-ethylene-signaling-ecological-and-evolutionary-consequences
#13
REVIEW
Mohammadhossein Ravanbakhsh, Rashmi Sasidharan, Laurentius A C J Voesenek, George A Kowalchuk, Alexandre Jousset
The plant hormone ethylene is one of the central regulators of plant development and stress resistance. Optimal ethylene signaling is essential for plant fitness and is under strong selection pressure. Plants upregulate ethylene production in response to stress, and this hormone triggers defense mechanisms. Due to the pleiotropic effects of ethylene, adjusting stress responses to maximize resistance, while minimizing costs, is a central determinant of plant fitness. Ethylene signaling is influenced by the plant-associated microbiome...
March 21, 2018: Microbiome
https://www.readbyqxmd.com/read/29558428/transcript-profiling-and-gene-identification-involved-in-the-ethylene-signal-transduction-pathways-of-creeping-bentgrass-agrostis-stolonifera-during-isr-response-induced-by-butanediol
#14
Han-Yu Jiang, Jin-Lin Zhang, Jiang-Wei Yang, Hui-Ling Ma
Creeping bentgrass ( Agrostis stolonifera ) is the preferred green lawn grass, with excellent turf characteristics but poor disease resistance. At present, the mechanisms of disease resistance in creeping bentgrass are poorly understood, especially the ethylene signal transduction pathway under the induced systemic resistance (ISR) response. In this study, butanediol (BDO), as a new type of disease-resistance compound, was applied to creeping bentgrass seedlings to induce the ISR response. Then, we measured ethylene production and related enzyme activities...
March 20, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29554117/ethylene-induced-plant-stress-tolerance-by-enterobacter-sp-sa187-is-mediated-by-2-keto-4-methylthiobutyric-acid-production
#15
Axel de Zélicourt, Lukas Synek, Maged M Saad, Hanin Alzubaidy, Rewaa Jalal, Yakun Xie, Cristina Andrés-Barrao, Eleonora Rolli, Florence Guerard, Kiruthiga G Mariappan, Ihsanullah Daur, Jean Colcombet, Moussa Benhamed, Thomas Depaepe, Dominique Van Der Straeten, Heribert Hirt
Several plant species require microbial associations for survival under different biotic and abiotic stresses. In this study, we show that Enterobacter sp. SA187, a desert plant endophytic bacterium, enhances yield of the crop plant alfalfa under field conditions as well as growth of the model plant Arabidopsis thaliana in vitro, revealing a high potential of SA187 as a biological solution for improving crop production. Studying the SA187 interaction with Arabidopsis, we uncovered a number of mechanisms related to the beneficial association of SA187 with plants...
March 19, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29528503/ethylene-signaling-induces-gelatinous-layers-with-typical-features-of-tension-wood-in-hybrid-aspen
#16
Judith Felten, Jorma Vahala, Jonathan Love, András Gorzsás, Markus Rüggeberg, Nicolas Delhomme, Joanna Leśniewska, Jaakko Kangasjärvi, Torgeir R Hvidsten, Ewa J Mellerowicz, Björn Sundberg
The phytohormone ethylene impacts secondary stem growth in plants by stimulating cambial activity, xylem development and fiber over vessel formation. We report the effect of ethylene on secondary cell wall formation and the molecular connection between ethylene signaling and wood formation. We applied exogenous ethylene or its precursor 1-aminocyclopropane-1-carboxylic acid (ACC) to wild-type and ethylene-insensitive hybrid aspen trees (Populus tremula × tremuloides) and studied secondary cell wall anatomy, chemistry and ultrastructure...
March 12, 2018: New Phytologist
https://www.readbyqxmd.com/read/29527680/an-apple-nac-transcription-factor-enhances-salt-stress-tolerance-by-modulating-the-ethylene-response
#17
Jian-Ping An, Ji-Fang Yao, Rui-Rui Xu, Chun-Xiang You, Xiao-Fei Wang, Yu-Jin Hao
It is known that ethylene signaling is involved in the regulation of salt stress response. However, the molecular mechanism on ethylene-regulated salt stress tolerance remains largely unclear. In this study, an apple NAC (NAM ATAF CUC) transcription factor, MdNAC047, was isolated and functionally characterized to be involved in ethylene-modulated salt tolerance. MdNAC047 gene was significantly induced by salt treatment and its overexpression conferred increased tolerance to salt stress and facilitated the release of ethylene...
March 12, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29527214/stereoisomers-of-the-bacterial-volatile-compound-2-3-butanediol-differently-elicit-systemic-defense-responses-of-pepper-against-multiple-viruses-in-the-field
#18
Hyun G Kong, Teak S Shin, Tae H Kim, Choong-Min Ryu
The volatile compound 2,3-butanediol, which is produced by certain strains of root-associated bacteria, consists of three stereoisomers, namely, two enantiomers (2R,3R- and 2S,3S-butanediol) and one meso compound (2R,3S-butanediol). The ability of 2,3-butanediol to induce plant resistance against pathogenic fungi and bacteria has been investigated; however, little is known about its effects on induced resistance against viruses in plants. To investigate the effects of 2,3-butanediol on plant systemic defense against viruses, we evaluated the disease control capacity of each of its three stereoisomers in pepper...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29520461/a-reversible-light-and-genotype-dependent-acquired-thermotolerance-response-protects-the-potato-plant-from-damage-due-to-excessive-temperature
#19
Almudena Trapero-Mozos, Laurence J M Ducreux, Craita E Bita, Wayne Morris, Cosima Wiese, Jenny A Morris, Christy Paterson, Peter E Hedley, Robert D Hancock, Mark Taylor
A powerful acquired thermotolerance response in potato was demonstrated and characterised in detail, showing the time course required for tolerance, the reversibility of the process and requirement for light. Potato is particularly vulnerable to increased temperature, considered to be the most important uncontrollable factor affecting growth and yield of this globally significant crop. Here, we describe an acquired thermotolerance response in potato, whereby treatment at a mildly elevated temperature primes the plant for more severe heat stress...
March 8, 2018: Planta
https://www.readbyqxmd.com/read/29520403/the-alkyne-tag-raman-imaging-of-coronatine-a-plant-pathogen-virulence-factor-in-commelina-communis-and-its-possible-mode-of-action
#20
Minoru Ueda, Kengo Hayashi, Syusuke Egoshi, Yasuhiro Ishimaru, Yousuke Takaoka, Hiroyuki Yamakoshi, Kosuke Dodo, Mikiko Sodeoka
We previously reported that coronatine, a virulence factor of plant bacteria, facilitates bacterial infection through an ER (endoplasmic reticulum)-mediated, non-canonical mechanism in the model dicot plant, Arabidopsis thaliana. Here, we report that this same ER-mechanism is ubiquitous among dicots and monocots, and works by affecting the ethylene signaling pathway widely found in plants. The subcellular localization of coronatine by the alkyne-tag Raman imaging (ATRI) approach provided a convincing clue.
March 9, 2018: Organic & Biomolecular Chemistry
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