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[PMID]: 29447189 [Au] Autor: Saleem AR; Brunetti C; Khalid A; Della Rocca G; Raio A; Emiliani G; De Carlo A; Mahmood T; Centritto M [Ad] Endereço: Department of Earth and Environmental Sciences, Bahria University Islamabad Campus, Islamabad, Pakistan. [Ti] Título: Drought response of Mucuna pruriens (L.) DC. inoculated with ACC deaminase and IAA producing rhizobacteria. [So] Source: PLoS One;13(2):e0191218, 2018. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Drought is one of the major constraints limiting agricultural production worldwide and is expected to increase in the future. Limited water availability causes significant effects to plant growth and physiology. Plants have evolved different traits to mitigate the stress imposed by drought. The presence of plant growth-promoting rhizobacteria (PGPR) could play an important role in improving plant performances and productivity under drought. These beneficial microorganisms colonize the rhizosphere of plants and increase drought tolerance by lowering ethylene formation. In the present study, we demonstrate the potential to improve the growth of velvet bean under water deficit conditions of two different strains of PGPR with ACCd (1-Aminocyclopropane-1-Carboxylate deaminase) activity isolated from rainfed farming system. We compared uninoculated and inoculated plants with PGPR to assess: a) photosynthetic performance and biomass; b) ACC content and ethylene emission from leaves and roots; c) leaf isoprene emission. Our results provided evidence that under drought conditions inoculation with PGPR containing the ACCd enzyme could improve plant growth compared to untreated plants. Ethylene emission from roots and leaves of inoculated velvet bean plants was significantly lower than uninoculated plants. Moreover, isoprene emission increased with drought stress progression and was higher in inoculated plants compared to uninoculated counterparts. These findings clearly illustrate that selected PGPR strains isolated from rainfed areas could be highly effective in promoting plant growth under drought conditions by decreasing ACC and ethylene levels in plants. [Mh] Termos MeSH primário: Mucuna/metabolismo Reguladores de Crescimento de Planta/metabolismo Rhizobiaceae/metabolismo [Mh] Termos MeSH secundário: Biomassa Carbono-Carbono Liases/metabolismo Secas Etilenos/biossíntese Mucuna/fisiologia Fotossíntese Desenvolvimento Vegetal Reguladores de Crescimento de Planta/fisiologia Raízes de Plantas/crescimento & desenvolvimento Rhizobiaceae/genética Rizosfera Microbiologia do Solo Água/fisiologia [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (Ethylenes); 0 (Plant Growth Regulators); 059QF0KO0R (Water); 91GW059KN7 (ethylene); EC 3.5.99.7 (1-aminocyclopropane-1-carboxylate deaminase); EC 4.1.- (Carbon-Carbon Lyases) [Em] Mês de entrada: 1803 [Cu] Atualização por classe: 180309 [Lr] Data última revisão: 180309 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180216 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0191218

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[PMID]: 29367488 [Au] Autor: Autthanit C; Jongsomjit B [Ad] Endereço: Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University. [Ti] Título: Production of Ethylene through Ethanol Dehydration on SBA-15 Catalysts Synthesized by Sol-gel and One-step Hydrothermal Methods. [So] Source: J Oleo Sci;67(2):235-243, 2018 Feb 01. [Is] ISSN: 1347-3352 [Cp] País de publicação: Japan [La] Idioma: eng [Ab] Resumo: The present work deals with the catalytic performance of SBA-15 supported catalysts in the gas phase catalytic dehydration of ethanol in the temperature range of 200 to 400°C. The SBA-15 support was incorporated on a zirconium (Zr) and bimetal of zirconium and lanthanum (Zr-La) prepared by sol-gel (SG) and hydrothermal (HT) methods. The catalysts were characterized by means of N physisorption, SEM/EDX, and NH -TPD. The experimental results demonstrated that the Zr-La/SBA-15-HT exhibited the highest catalytic activity. Ethanol conversion and ethylene selectivity were found to increase with increased reaction temperature. The best catalytic results were achieved for Zr-La/SBA-15-HT indicating values of ethanol conversion and ethylene yield of ca. 84% and 80%, respectively at 400°C. The most important parameter influencing their catalytic properties appears to be the interaction between metal and support depending on different methods. The metal dispersion inside the siliceous matrix of SBA-15 has a direct influence on their surface acidity. Meanwhile, the performance of these SBA-15 supported catalysts in ethanol dehydration is also related with the alteration of surface acidity caused by the introduction of Zr and Zr-La. [Mh] Termos MeSH primário: Química Orgânica/métodos Etanol/química Etilenos/síntese química Dióxido de Silício/química [Mh] Termos MeSH secundário: Catálise Dessecação Lantânio/química Temperatura Ambiente Zircônio/química [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 0 (SBA-15); 3K9958V90M (Ethanol); 6I3K30563S (Lanthanum); 7631-86-9 (Silicon Dioxide); 91GW059KN7 (ethylene); C6V6S92N3C (Zirconium) [Em] Mês de entrada: 1803 [Cu] Atualização por classe: 180309 [Lr] Data última revisão: 180309 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180126 [St] Status: MEDLINE [do] DOI: 10.5650/jos.ess17167

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[PMID]: 27775153 [Au] Autor: Liu M; Liu XX; He XL; Liu LJ; Wu H; Tang CX; Zhang YS; Jin CW [Ad] Endereço: Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China. [Ti] Título: Ethylene and nitric oxide interact to regulate the magnesium deficiency-induced root hair development in Arabidopsis. [So] Source: New Phytol;213(3):1242-1256, 2017 Feb. [Is] ISSN: 1469-8137 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Nitric oxide (NO) and ethylene respond to biotic and abiotic stresses through either similar or independent processes. This study examines the mechanism underlying the effects of NO and ethylene on promoting root hair development in Arabidopsis under magnesium (Mg) deficiency. The interaction between NO and ethylene in the regulation of Mg deficiency-induced root hair development was investigated using NO- and ethylene-related mutants and pharmacological methods. Mg deficiency triggered a burst of NO and ethylene, accompanied by a stimulated development of root hairs. Interestingly, ethylene facilitated NO generation by activation of both nitrate reductase and nitric oxide synthase-like (NOS-L) in the roots of Mg-deficient plants. In turn, NO enhanced ethylene synthesis through stimulating the activities of 1-aminocyclopropane-1-carboxylate (ACC) oxidase and ACC synthase (ACS). These two processes constituted an NO-ethylene feedback loop. Blocking either of these two processes inhibited the stimulation of root hair development under Mg deficiency. In conclusion, we suggest that Mg deficiency increases the production of NO and ethylene in roots, each influencing the accumulation and role of the other, and thus these two signals interactively regulate Mg deficiency-induced root hair morphogenesis. [Mh] Termos MeSH primário: Arabidopsis/crescimento & desenvolvimento Arabidopsis/metabolismo Etilenos/metabolismo Magnésio/metabolismo Óxido Nítrico/metabolismo Raízes de Plantas/crescimento & desenvolvimento [Mh] Termos MeSH secundário: Modelos Biológicos Óxido Nítrico/biossíntese Transdução de Sinais [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 31C4KY9ESH (Nitric Oxide); 91GW059KN7 (ethylene); I38ZP9992A (Magnesium) [Em] Mês de entrada: 1802 [Cu] Atualização por classe: 180221 [Lr] Data última revisão: 180221 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 161025 [St] Status: MEDLINE [do] DOI: 10.1111/nph.14259

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[PMID]: 29304061 [Au] Autor: Ma C; Yang J; Cheng Q; Mao A; Zhang J; Wang S; Weng Y; Wen C [Ad] Endereço: Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China. [Ti] Título: Comparative analysis of miRNA and mRNA abundance in determinate cucumber by high-throughput sequencing. [So] Source: PLoS One;13(1):e0190691, 2018. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Determinate cucumber is a type of short vines, fewer nodes, and terminal flowers, it is suitable for high-density planting and available harvesting in field cultivation, whereas the indeterminate cucumber is preferred to cultivate in greenhouses. However, many biotic or abiotic stresses could lead indeterminate cucumber to be determinate in greenhouse cultivation, which may decrease yield and fruit quality. Therefore, it is urgent and essential to investigate the key factors forming determinate and terminal flowering in cucumber. In this study, two close background inbred lines were selected and conducted the miRNA and mRNA high throughput sequencing. Interestingly, ethylene-associated miRNAs and mRNAs were intensively obtained, indicating that the plant hormone ethylene is a key factor impacting determinate and terminal flowering in cucumber. The ethylene metabolites analysis showed that significant higher ethylene was observed in determinate line than that in the indeterminate line. The RT-qPCR validation of ethylene related miRNAs Cas-miR172, Cas-miR396, and Cas-miR414 and their target mRNAs showed a significant negative correlation. These data suggested that ethylene-associated miRNAs might affect determinate and terminal flower phenotypes by regulating their target genes expression. This study not only provides a potential molecular mechanism for determinate formation in cucumber but also establishes a method to demonstrate important physiological processes through the comprehensive association of miRNA and mRNA high-throughput sequencing. [Mh] Termos MeSH primário: Cucumis sativus/genética Genes de Plantas Sequenciamento de Nucleotídeos em Larga Escala/métodos MicroRNAs/genética RNA Mensageiro/genética [Mh] Termos MeSH secundário: Etilenos/metabolismo Reação em Cadeia da Polimerase em Tempo Real [Pt] Tipo de publicação: COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES [Nm] Nome de substância: 0 (Ethylenes); 0 (MicroRNAs); 0 (RNA, Messenger); 91GW059KN7 (ethylene) [Em] Mês de entrada: 1802 [Cu] Atualização por classe: 180215 [Lr] Data última revisão: 180215 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 180106 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0190691

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[PMID]: 28468331 [Au] Autor: Tong Z; Wang D; Sun Y; Yang Q; Meng X; Wang L; Feng W; Li L; Wurtele ES; Wang X [Ad] Endereço: Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China. tongzheng@itbb.org.cn. [Ti] Título: Comparative Proteomics of Rubber Latex Revealed Multiple Protein Species of REF/SRPP Family Respond Diversely to Ethylene Stimulation among Different Rubber Tree Clones. [So] Source: Int J Mol Sci;18(5), 2017 May 02. [Is] ISSN: 1422-0067 [Cp] País de publicação: Switzerland [La] Idioma: eng [Ab] Resumo: Rubber elongation factor (REF) and small rubber particle protein (SRPP) are two key factors for natural rubber biosynthesis. To further understand the roles of these proteins in rubber formation, six different genes for latex abundant REF or SRPP proteins, including REF and SRPP , were characterized from Reyan (RY) 7-33-97. Sequence analysis showed that REFs have a variable and long N-terminal, whereas SRPPs have a variable and long C-terminal beyond the REF domain, and REF has a ß subunit of ATPase in its N-terminal. Through two-dimensional electrophoresis (2-DE), each REF/SRPP protein was separated into multiple protein spots on 2-DE gels, indicating they have multiple protein species. The abundance of REF/SRPP proteins was compared between ethylene and control treatments or among rubber tree clones with different levels of latex productivity by analyzing 2-DE gels. The total abundance of each REF/SRPP protein decreased or changed a little upon ethylene stimulation, whereas the abundance of multiple protein species of the same REF/SRPP changed diversely. Among the three rubber tree clones, the abundance of the protein species also differed significantly. Especially, two protein species of REF or REF were ethylene-responsive only in the high latex productivity clone RY 8-79 instead of in RY 7-33-97 and PR 107. Some individual protein species were positively related to ethylene stimulation and latex productivity. These results suggested that the specific protein species could be more important than others for rubber production and post-translational modifications might play important roles in rubber biosynthesis. [Mh] Termos MeSH primário: Etilenos/farmacologia Hevea/efeitos dos fármacos Látex/biossíntese Proteínas de Plantas/metabolismo Proteoma/metabolismo [Mh] Termos MeSH secundário: Hevea/metabolismo Proteínas de Plantas/genética Proteoma/genética [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 0 (Latex); 0 (Plant Proteins); 0 (Proteome); 91GW059KN7 (ethylene) [Em] Mês de entrada: 1802 [Cu] Atualização por classe: 180202 [Lr] Data última revisão: 180202 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170505 [St] Status: MEDLINE

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[PMID]: 29242345 [Au] Autor: Lenarcic T; Albert I; Böhm H; Hodnik V; Pirc K; Zavec AB; Podobnik M; Pahovnik D; Zagar E; Pruitt R; Greimel P; Yamaji-Hasegawa A; Kobayashi T; Zienkiewicz A; Gömann J; Mortimer JC; Fang L; Mamode-Cassim A; Deleu M; Lins L; Oecking C; Feussner I; Mongrand S; Anderluh G; Nürnberger T [Ad] Endereço: Department for Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia. [Ti] Título: Eudicot plant-specific sphingolipids determine host selectivity of microbial NLP cytolysins. [So] Source: Science;358(6369):1431-1434, 2017 12 15. [Is] ISSN: 1095-9203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Necrosis and ethylene-inducing peptide 1-like (NLP) proteins constitute a superfamily of proteins produced by plant pathogenic bacteria, fungi, and oomycetes. Many NLPs are cytotoxins that facilitate microbial infection of eudicot, but not of monocot plants. Here, we report glycosylinositol phosphorylceramide (GIPC) sphingolipids as NLP toxin receptors. Plant mutants with altered GIPC composition were more resistant to NLP toxins. Binding studies and x-ray crystallography showed that NLPs form complexes with terminal monomeric hexose moieties of GIPCs that result in conformational changes within the toxin. Insensitivity to NLP cytolysins of monocot plants may be explained by the length of the GIPC head group and the architecture of the NLP sugar-binding site. We unveil early steps in NLP cytolysin action that determine plant clade-specific toxin selectivity. [Mh] Termos MeSH primário: Arabidopsis/parasitologia Citotoxinas/metabolismo Especificidade de Hospedeiro Phytophthora/metabolismo Doenças das Plantas/parasitologia Pythium/metabolismo Esfingolipídeos/metabolismo Toxinas Biológicas/metabolismo [Mh] Termos MeSH secundário: Sítios de Ligação Cristalografia por Raios X Citotoxinas/química Etilenos/metabolismo Esfingolipídeos/química [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S. [Nm] Nome de substância: 0 (Cytotoxins); 0 (Ethylenes); 0 (Sphingolipids); 0 (Toxins, Biological); 91GW059KN7 (ethylene) [Em] Mês de entrada: 1801 [Cu] Atualização por classe: 180115 [Lr] Data última revisão: 180115 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 171216 [St] Status: MEDLINE [do] DOI: 10.1126/science.aan6874

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[PMID]: 29253879 [Au] Autor: Chen J; Liu X; Li F; Li Y; Yuan D [Ad] Endereço: Hainan Key Laboratory of Banana Genetic Improvement, Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, China. [Ti] Título: Cold shock treatment extends shelf life of naturally ripened or ethylene-ripened avocado fruits. [So] Source: PLoS One;12(12):e0189991, 2017. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Avocado is an important tropical fruit with high commercial value, but has a relatively short storage life. In this study, the effects of cold shock treatment (CST) on shelf life of naturally ripened and ethylene-ripened avocado fruits were investigated. Fruits were immersed in ice water for 30 min, then subjected to natural or ethylene-induced ripening. Fruit color; firmness; respiration rate; ethylene production; and the activities of polygalacturonase (PG), pectin methylesterase (PME), and endo-ß-1,4-glucanase were measured. Immersion in ice water for 30 min effectively delayed ripening-associated processes, including peel discoloration, pulp softening, respiration rate, and ethylene production during shelf life. The delay in fruit softening by CST was associated with decreased PG and endo-ß-1,4-glucanase activities, but not PME activity. This method could potentially be a useful postharvest technology to extend shelf life of avocado fruits. [Mh] Termos MeSH primário: Temperatura Baixa Etilenos/farmacologia Frutas Persea [Mh] Termos MeSH secundário: Hidrolases de Éster Carboxílico/química Parede Celular Celulase/química Pectinas/química Poligalacturonase/química Fatores de Tempo Água [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 0 (Pectins); 059QF0KO0R (Water); EC 3.1.1.- (Carboxylic Ester Hydrolases); EC 3.1.1.11 (pectinesterase); EC 3.2.1.15 (Polygalacturonase); EC 3.2.1.4 (Cellulase); EC 3.2.1.4 (endoglucanase EGL1) [Em] Mês de entrada: 1801 [Cu] Atualização por classe: 180112 [Lr] Data última revisão: 180112 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 171219 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0189991

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[PMID]: 28460054 [Au] Autor: Zhou N; Zhao S; Tian CY [Ad] Endereço: State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China. [Ti] Título: Effect of halotolerant rhizobacteria isolated from halophytes on the growth of sugar beet (Beta vulgaris L.) under salt stress. [So] Source: FEMS Microbiol Lett;364(11), 2017 Jun 15. [Is] ISSN: 1574-6968 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Utilization of rhizobacteria that have associated with plant roots in harsh environments could be a feasible strategy to deal with limits to agricultural production caused by soil salinity. Halophytes occur naturally in high-salt environments, and their roots may be associated with promising microbial candidates for promoting growth and salt tolerance in crops. This study aimed to isolate efficient halotolerant plant-growth-promoting rhizobacterial strains from halophytes and evaluate their activity and effects on sugar beet (Beta vulgaris L.) growth under salinity stress. A total of 23 isolates were initially screened for their ability to secrete 1-aminocyclopropane-1-carboxylate deaminase (ACD) as well as other plant-growth-promoting characteristics and subsequently identified by sequencing the 16S rRNA gene. Three isolates, identified as Micrococcus yunnanensis, Planococcus rifietoensis and Variovorax paradoxus, enhanced salt stress tolerance remarkably in sugar beet, resulting in greater seed germination and plant biomass, higher photosynthetic capacity and lower stress-induced ethylene production at different NaCl concentrations (50-125 mM). These results demonstrate that salinity-adapted, ACD-producing bacteria isolated from halophytes could promote sugar beet growth under saline stress conditions. [Mh] Termos MeSH primário: Alphaproteobacteria/classificação Beta vulgaris/microbiologia Raízes de Plantas/microbiologia Plantas Tolerantes a Sal/microbiologia Estresse Fisiológico [Mh] Termos MeSH secundário: Alphaproteobacteria/genética Alphaproteobacteria/isolamento & purificação Beta vulgaris/crescimento & desenvolvimento Biomassa Carbono-Carbono Liases/metabolismo Etilenos/metabolismo Micrococcus/isolamento & purificação Micrococcus/metabolismo Bactérias Planococcus/isolamento & purificação Bactérias Planococcus/metabolismo RNA Ribossômico 16S/genética Salinidade Solo/química Microbiologia do Solo [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 0 (RNA, Ribosomal, 16S); 0 (Soil); 91GW059KN7 (ethylene); EC 3.5.99.7 (1-aminocyclopropane-1-carboxylate deaminase); EC 4.1.- (Carbon-Carbon Lyases) [Em] Mês de entrada: 1801 [Cu] Atualização por classe: 180108 [Lr] Data última revisão: 180108 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170502 [St] Status: MEDLINE [do] DOI: 10.1093/femsle/fnx091

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[PMID]: 28456120 [Au] Autor: Denisov Y; Glick S; Zviran T; Ish-Shalom M; Levin A; Faigenboim A; Cohen Y; Irihimovitch V [Ad] Endereço: Institute of Plant Sciences, The Volcani Center, Agricultural Research Organization, Bet-Dagan 50250, Israel. [Ti] Título: Distinct organ-specific and temporal expression profiles of auxin-related genes during mango fruitlet drop. [So] Source: Plant Physiol Biochem;115:439-448, 2017 Jun. [Is] ISSN: 1873-2690 [Cp] País de publicação: France [La] Idioma: eng [Ab] Resumo: In mango, fruitlet abscission initiates with a decrease in polar auxin transport through the abscission zone (AZ), triggered by ethylene. To explore the molecular components affecting this process, we initially conducted experiments with developing fruitlet explants in which fruitlet drop was induced by ethephon, and monitored the expression patterns of distinct indole-3-acetic acid (IAA)-related genes, comparing control vs. ethephon-treated pericarp and AZ profiles. Over the examined time period (48 h), the accumulation of MiPIN1 and MiLAX2 IAA-efflux and influx genes decreased in both control and treated tissues. Nevertheless, ethephon-treated tissues displayed significantly lower levels of these transcripts within 18-24 h. An opposite pattern was observed for MiLAX3, which overall exhibited up-regulation in treated fruitlet tissues. Ethephon treatment also induced an early and pronounced down-regulation of five out of six IAA-responsive genes, and a substantial reduction in the accumulation of two IAA-synthesis related transcripts, contrasting with significant up-regulation of Gretchen Hagen3 transcript (MiGH3.1) encoding an IAA-amino synthetase. Furthermore, for both control and treated AZ, the decrease in IAA-carrier transcripts was associated with a decrease in IAA content and an increase in IAA-Asp:IAA ratio, suggesting that fruitlet drop is accompanied by formation of this non-hydrolyzed IAA-amino acid conjugate. Despite these similarities, ethephon-treated AZ displayed a sharper decrease in IAA content and higher IAA-Asp:IAA ratio within 18 h. Lastly, the response of IAA-related genes to exogenous IAA treatment was also examined. Our results are discussed, highlighting the roles that distinct IAA-related genes might assume during mango fruitlet drop. [Mh] Termos MeSH primário: Mangifera/metabolismo Proteínas de Plantas/metabolismo [Mh] Termos MeSH secundário: Etilenos/metabolismo Regulação da Expressão Gênica de Plantas/genética Regulação da Expressão Gênica de Plantas/fisiologia Ácidos Indolacéticos/metabolismo Mangifera/genética Proteínas de Plantas/genética [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Ethylenes); 0 (Indoleacetic Acids); 0 (Plant Proteins); 91GW059KN7 (ethylene) [Em] Mês de entrada: 1712 [Cu] Atualização por classe: 171229 [Lr] Data última revisão: 171229 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170430 [St] Status: MEDLINE

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[PMID]: 28465411 [Au] Autor: Xiong Q; Ma B; Lu X; Huang YH; He SJ; Yang C; Yin CC; Zhao H; Zhou Y; Zhang WK; Wang WS; Li ZK; Chen SY; Zhang JS [Ad] Endereço: State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China. [Ti] Título: Ethylene-Inhibited Jasmonic Acid Biosynthesis Promotes Mesocotyl/Coleoptile Elongation of Etiolated Rice Seedlings. [So] Source: Plant Cell;29(5):1053-1072, 2017 May. [Is] ISSN: 1532-298X [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Elongation of the mesocotyl and coleoptile facilitates the emergence of rice ( ) seedlings from soil and is affected by various genetic and environment factors. The regulatory mechanism underlying this process remains largely unclear. Here, we examined the regulation of mesocotyl and coleoptile growth by characterizing a ( ) mutant that exhibits a longer mesocotyl and longer coleoptile than its original variety of rice. was identified through map-based cloning and encodes a PLA -type phospholipase that localizes in chloroplasts. GY1 functions at the initial step of jasmonic acid (JA) biosynthesis to repress mesocotyl and coleoptile elongation in etiolated rice seedlings. Ethylene inhibits the expression of and other genes in the JA biosynthesis pathway to reduce JA levels and enhance mesocotyl and coleoptile growth by promoting cell elongation. Genetically, acts downstream of the OsEIN2-mediated ethylene signaling pathway to regulate mesocotyl/coleoptile growth. Through analysis of the resequencing data from 3000 rice accessions, we identified a single natural variation of the gene, , which contributes to mesocotyl elongation in rice varieties. Our study reveals novel insights into the regulatory mechanism of mesocotyl/coleoptile elongation and should have practical applications in rice breeding programs. [Mh] Termos MeSH primário: Ciclopentanos/metabolismo Etilenos/farmacologia Oryza/efeitos dos fármacos Oryza/metabolismo Oxilipinas/metabolismo Plântulas/efeitos dos fármacos Plântulas/metabolismo [Mh] Termos MeSH secundário: Cotilédone/efeitos dos fármacos Cotilédone/genética Cotilédone/metabolismo Regulação da Expressão Gênica de Plantas/efeitos dos fármacos Regulação da Expressão Gênica de Plantas/genética Oryza/genética Proteínas de Plantas/genética Proteínas de Plantas/metabolismo Plântulas/genética [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (Cyclopentanes); 0 (Ethylenes); 0 (Oxylipins); 0 (Plant Proteins); 6RI5N05OWW (jasmonic acid); 91GW059KN7 (ethylene) [Em] Mês de entrada: 1712 [Cu] Atualização por classe: 171212 [Lr] Data última revisão: 171212 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170504 [St] Status: MEDLINE [do] DOI: 10.1105/tpc.16.00981

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2	and or and not		PalavrasDescritor de assuntoDescritor de assunto primárioLimitesAutorPalavras do títuloPalavras do resumoIdiomaPaís de publicaçãoNome de substânciaNome de pessoa como assuntoRevistaAssunto de RevistaISSNTipo de publicaçãoIdentificador únicoMês de entradaAno de publicaçãoTexto completoAtualização por classeCategoria DeCSCategoria DeCS explodidaCategoria CID-10SubSetsPais de AfiliaçãoAfiliaçãoAfiliação 2
3	and or and not		PalavrasDescritor de assuntoDescritor de assunto primárioLimitesAutorPalavras do títuloPalavras do resumoIdiomaPaís de publicaçãoNome de substânciaNome de pessoa como assuntoRevistaAssunto de RevistaISSNTipo de publicaçãoIdentificador únicoMês de entradaAno de publicaçãoTexto completoAtualização por classeCategoria DeCSCategoria DeCS explodidaCategoria CID-10SubSetsPais de AfiliaçãoAfiliaçãoAfiliação 2

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