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https://www.readbyqxmd.com/read/29160805/indole-3-butyric-acid-induces-ectopic-formation-of-metaxylem-in-the-hypocotyl-of-arabidopsis-thaliana-without-conversion-into-indole-3-acetic-acid-and-with-a-positive-interaction-with-ethylene
#1
Laura Fattorini, Federica Della Rovere, Eleonora Andreini, Marilena Ronzan, Giuseppina Falasca, Maria Maddalena Altamura
The role of the auxins indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) and of the auxin-interacting phytohormone ethylene, on the ectopic formation of primary xylem (xylogenesis in planta) is still little known. In particular, auxin/ethylene-target tissue(s), modality of the xylary process (trans-differentiation vs. de novo formation), and the kind of ectopic elements formed (metaxylem vs. protoxylem) are currently unknown. It is also unclear whether IBA may act on the process independently of conversion into IAA...
November 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29158643/in-vitro-propagation-ex-vitro-rooting-and-leaf-micromorphology-of-bauhinia-racemosa-lam-a-leguminous-tree-with-medicinal-values
#2
Udit Sharma, Vinod Kataria, N S Shekhawat
A micropropagation system for Bauhinia racemosa Lam. was developed involving axillary shoot proliferation and ex vitro rooting using nodal explants obtained from mature tree. MS medium with 3.0 mg l(-1) BA (6-benzyladenine) was optimum for shoot bud induction. For shoot multiplication, mother explants were transferred repeatedly on medium containing low concentration of BA (0.75 mg l(-1)). Number of shoots was increased up to two passages and decreased thereafter. Shoot multiplication was further enhanced on MS medium containing 0...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158638/genetic-characterization-of-chayote-sechium-edule-jacq-swartz-landraces-of-north-eastern-hills-of-india-and-conservation-measure
#3
Veerendra Kumar Verma, Avinash Pandey, Anjani Kumar Jha, S V Ngachan
Chayote or chow-chow is an underutilized cucurbit vegetable crop, widely cultivated by farmers in the backyards and Jhum lands for its tender leaves, fruits and tuberous root. In order to initiate crop improvement program in this crop, the present study was undertaken to assess the genetic variations in the 74 chow-chow landraces collected from the North Eastern Hill region of India. Wide variations for fruit colors, fruit length (6.5-21.5 cm), fruit width (4.2-10.7 cm), fruit weight (60-560 g), vitamin-C (2...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29151180/from-bench-to-the-hemodialysis-clinic-protein-bound-uremic-toxins-modulate-nf-%C3%AE%C2%BAb-nrf2-expression
#4
Milena B Stockler-Pinto, Christophe O Soulage, Natália A Borges, Ludmila F M F Cardozo, Carla J Dolenga, Lia S Nakao, Roberto Pecoits-Filho, Denis Fouque, Denise Mafra
PURPOSE: Uremic toxins produced by gut microbiota (indoxyl sulfate-IS, p-cresyl sulfate-p-CS, and indole-3-acetic acid-IAA) accumulate in hemodialysis (HD) patients and exhibit potent inflammatory effects. However, the impact of these toxins on nuclear E2-related factor 2 (Nrf2) and nuclear factor-kappa B (NF-κB) expression in HD patients remains poorly defined. The aim of this study was to evaluate the association between uremic toxins and Nrf2/NF-κB expression in vitro (RAW 264.7 macrophage-like cells) and in peripheral blood mononuclear cells from HD patients...
November 18, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29151105/eryptosis-the-neglected-cause-of-anemia-in-end-stage-renal-disease
#5
Florian Lang, Rosi Bissinger, Majed Abed, Ferruh Artunc
End stage renal disease (ESRD) invariably leads to anemia which has been mainly attributed to compromised release of erythropoietin from the defective kidneys with subsequent impairment of erythropoiesis. However, erythropoietin replacement only partially reverses anemia pointing to the involvement of additional mechanisms. As shown more recently, anemia of ESRD is indeed in large part a result of accelerated erythrocyte loss due to suicidal erythrocyte death or eryptosis, characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the cell surface...
October 23, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29146260/a-novel-burkholderia-ambifaria-strain-able-to-degrade-the-mycotoxin-fusaric-acid-and-to-inhibit-fusarium-spp-growth
#6
Ester Simonetti, Irma N Roberts, Marcela S Montecchia, Flavio H Gutierrez-Boem, Federico M Gomez, Jimena A Ruiz
Fusaric acid (FA) is a fungal metabolite produced by several Fusarium species responsible for wilts and root rot diseases of a great variety of plants. Bacillus spp. and Pseudomonas spp. have been considered as promising biocontrol agents against phytopathogenic Fusarium spp., however it has been demonstrated that FA negatively affects growth and production of some antibiotics in these bacteria. Thus, the capability to degrade FA would be a desirable characteristic in bacterial biocontrol agents of Fusarium wilt...
January 2018: Microbiological Research
https://www.readbyqxmd.com/read/29139127/combined-transcriptome-and-translatome-analyses-reveal-a-role-for-tryptophan-dependent-auxin-biosynthesis-in-the-control-of-dog1-dependent-seed-dormancy
#7
Bing Bai, Ondřej Novák, Karin Ljung, Johannes Hanson, Leónie Bentsink
The importance of translational regulation during Arabidopsis seed germination has been shown previously. Here the role of transcriptional and translational regulation during seed imbibition of the very dormant DELAY OF GERMINATION 1 (DOG1) near-isogenic line was investigated. Polysome profiling was performed on dormant and after-ripened seeds imbibed for 6 and 24 h in water and in the transcription inhibitor cordycepin. Transcriptome and translatome changes were investigated. Ribosomal profiles of after-ripened seeds imbibed in cordycepin mimic those of dormant seeds...
November 15, 2017: New Phytologist
https://www.readbyqxmd.com/read/29135287/molecular-modelling-studies-in-explaining-the-higher-gpvi-antagonistic-activity-of-the-racemic-2-4-methoxyphenylsulfonyl-2-3-4-9-tetrahydro-1h-pyrido-3-4-b-indole-3-carboxamide-than-its-enantiomers
#8
S S Bhunia, A K Saxena
The GPVI receptor on the platelets plays a major role in inhibiting arterial thrombosis with limited risk of bleeding and is considered a potential anti-thrombotic target for arterial thrombosis. In the reported anti-thrombotics, tetrahydropyridoindoles, the title compound was the best inhibitor of the collagen mediated platelet aggregation by antagonizing the platelet receptor GPVI. Interestingly, the racemic title compound showed better antagonism (IC50 racemate = 6.7 μM) than either of its enantiomers (IC50 S enantiomer = 25...
November 14, 2017: SAR and QSAR in Environmental Research
https://www.readbyqxmd.com/read/29134282/aba-and-iaa-control-microsporogenesis-in-petunia-hybrida-l
#9
L V Kovaleva, A S Voronkov, E V Zakharova, I M Andreev
The formation of fertile male gametophyte is known to require timely degeneration of polyfunctional tapetum tissue. The last process caused by the programmed cell death (PCD) is a part of the anther program maturation which leads to sequential anther tissue destruction coordinated with pollen differentiation. In the present work, distribution of abscisic acid (ABA) and indole-3-acetic acid (IAA) in developing anthers of male-fertile and male-sterile lines of petunia (Petunia hybrida L.) was analyzed by using the immunohistochemical method...
November 13, 2017: Protoplasma
https://www.readbyqxmd.com/read/29132316/genome-wide-analysis-and-transcriptomic-profiling-of-the-auxin-biosynthesis-transport-and-signaling-family-genes-in-moso-bamboo-phyllostachys-heterocycla
#10
Wenjia Wang, Lianfeng Gu, Shanwen Ye, Hangxiao Zhang, Changyang Cai, Mengqi Xiang, Yubang Gao, Qin Wang, Chentao Lin, Qiang Zhu
BACKGROUND: Auxin is essential for plant growth and development. Although substantial progress has been made in understanding auxin pathways in model plants such as Arabidopsis and rice, little is known in moso bamboo which is famous for its fast growth resulting from the rapid cell elongation and division. RESULTS: Here we showed that exogenous auxin has strong effects on crown and primary roots. Genes involved in auxin action, including 13 YUCCA (YUC) genes involved in auxin synthesis, 14 PIN-FORMED/PIN-like (PIN/PILS) and 7 AUXIN1/LIKE-AUX1 (AUX1/LAX) members involved in auxin transport, 10 auxin receptors (AFB) involved in auxin perception, 43 auxin/indole-3-aceticacid (AUX/IAA) genes, and 41 auxin response factors (ARF) involved in auxin signaling were identified through genome-wide analysis...
November 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29132307/involvement-of-lemdr-an-atp-binding-cassette-protein-gene-in-shikonin-transport-and-biosynthesis-in-lithospermum-erythrorhizon
#11
Yu Zhu, Gui-Hua Lu, Zhuo-Wu Bian, Feng-Yao Wu, Yan-Jun Pang, Xiao-Ming Wang, Rong-Wu Yang, Cheng-Yi Tang, Jin-Liang Qi, Yong-Hua Yang
BACKGROUND: Shikonin is a naphthoquinone secondary metabolite with important medicinal value and is found in Lithospermum erythrorhizon. Considering the limited knowledge on the membrane transport mechanism of shikonin, this study investigated such molecular mechanism. RESULTS: We successfully isolated an ATP-binding cassette protein gene, LeMDR, from L. erythrorhizon. LeMDR is predominantly expressed in L. erythrorhizon roots, where shikonin accumulated. Functional analysis of LeMDR by using the yeast cell expression system revealed that LeMDR is possibly involved in the shikonin efflux transport...
November 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29131620/carbene-catalyzed-indole-3-methyl-c-sp3-h-bond-functionalization
#12
Jian Cheng, Jun Sun, Jiekuan Yan, Song Yang, Pengcheng Zheng, Zhichao Jin, Yonggui Robin Chi
Metal-free catalytic functionalization of aromatic sp2-carbons and benzylic sp3-carbons remains challenging. Here we report a carbene-catalyzed activation and functionalization of the 3-methyl sp3-carbon attached to 2-formyl-indoles. The reaction proceeds through an NHC-bound o-quinodimethane as the key intermediate generated from 2-formyl-3-methylindoles under oxidative conditions. Reactive ketones are found to be effective substrates to produce substituted hydropyrano[3,4-b]indoles in good to excellent yields...
November 13, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29127580/sigma-1-receptor-agonists-induce-oxidative-stress-in-mitochondria-and-enhance-complex-i-activity-in-physiological-condition-but-protect-against-pathological-oxidative-stress
#13
Nino Goguadze, Elene Zhuravliova, Didier Morin, Davit Mikeladze, Tangui Maurice
The sigma1 receptor (σ1R) is a chaperone protein residing at mitochondria-associated endoplasmic reticulum (ER) membranes (MAMs), where it modulates Ca(2+) exchange between the ER and mitochondria by interacting with inositol-1,4,5 trisphosphate receptors (IP3Rs). The σ1R is highly expressed in the central nervous system and its activation stimulates neuromodulation and neuroprotection, for instance in Alzheimer's disease (AD) models in vitro and in vivo. σ1R effects on mitochondria pathophysiology and the downstream signaling are still not fully understood...
November 10, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/29125970/chemical-characterization-of-cytotoxic-indole-acetic-acid-derivative-from-mulberry-fruit-morus-alba-l-against-human-cervical-cancer
#14
Jae Sik Yu, Dahae Lee, Seoung Rak Lee, Jae Wook Lee, Chang-Ik Choi, Tae Su Jang, Ki Sung Kang, Ki Hyun Kim
The fruit of the white mulberry tree (Morus alba L.) is a multiple fruit with a sweet flavor commonly consumed around the world. Chemical investigation of the fruits led to the isolation of two indole acetic acid derivatives (1 -2) including a new compound, which turned out to be an isolation artifact, 3S-(β-D-glucopyranosyloxy)-2,3-dihydro-2-oxo-1H-indole-3-acetic acid butyl ester (1), along with five known compounds (3 -7). Compounds 2 and 7 were newly identified from mulberry fruit. The new isolation artifact (1) exhibited cytotoxic effect on human cervical cancer Hela cells in a dose-dependent manner...
November 7, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/29124815/diluted-seawater-affects-phytohormone-receptors-and-maintain-the-protonema-stage-in-physcomitrella-patens
#15
Zhenbing Zheng, Shan Gao, Li Huan, Guang-Ce Wang
Due to its highly efficient homologous recombination ability and unusual evolutionary position, the moss Physcomitrella patens has begun to attract more attention in genetic and evolutionary studies. Protonema, the filament stage of the gametophyte is of great significance in P. patens protoplast isolation. Moreover, protonema is widely used in genetic engineering. However, difficulties in the induction and state maintenance of protonema restrict its wider application. In this work, protonema was induced efficiently in a diluted seawater medium, and the filamentous state was maintained without further cell differentiation...
November 10, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/29122987/glutathione-transferase-u13-functions-in-pathogen-triggered-glucosinolate-metabolism
#16
Mariola Piślewska-Bednarek, Ryohei Thomas Nakano, Kei Hiruma, Marta Pastorczyk, Andrea Sánchez-Vallet, Suthitar Singkaravanit-Ogawa, Danuta Ciesiołka, Yoshitaka Takano, Antonio Molina, Paul Schulze-Lefert, Paweł Bednarek
Glutathione (GSH) and indole glucosinolates (IGs) exert key functions in the immune system of the model plant Arabidopsis thaliana. Appropriate GSH levels are important for execution of both pre- and post-invasive disease resistance mechanisms to invasive pathogens, while an intact PENETRATION2 (PEN2)-pathway for IG-metabolism is essential for pre-invasive resistance in this species. Earlier indirect evidence suggested that the latter pathway involves conjugation of GSH with unstable products of IG metabolism and further processing of the resulting adducts to biologically active molecules...
November 9, 2017: Plant Physiology
https://www.readbyqxmd.com/read/29119317/prodigiosin-violacein-and-volatile-organic-compounds-produced-by-widespread-cutaneous-bacteria-of-amphibians-can-inhibit-two-batrachochytrium-fungal-pathogens
#17
Douglas C Woodhams, Brandon C LaBumbard, Kelly L Barnhart, Matthew H Becker, Molly C Bletz, Laura A Escobar, Sandra V Flechas, Megan E Forman, Anthony A Iannetta, Maureen D Joyce, Falitiana Rabemananjara, Brian Gratwicke, Miguel Vences, Kevin P C Minbiole
Symbiotic bacteria can produce secondary metabolites and volatile compounds that contribute to amphibian skin defense. Some of these symbionts have been used as probiotics to treat or prevent the emerging disease chytridiomycosis. We examined 20 amphibian cutaneous bacteria for the production of prodigiosin or violacein, brightly colored defense compounds that pigment the bacteria and have characteristic spectroscopic properties making them readily detectable, and evaluated the antifungal activity of these compounds...
November 9, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/29119309/localization-and-transport-of-indole-3-acetic-acid-during-somatic-embryogenesis-in-coffea-canephora
#18
Ruth E Márquez-López, Cleyre Pérez-Hernández, Ángela Ku-González, Rosa María Galaz-Ávalos, Víctor Manuel Loyola-Vargas
Auxin and polar auxin transport have been implicated in controlling zygotic embryo development, but less is known about their role in the development of somatic embryos. The aim of this study was to determine if indole-3-acetic acid (IAA) and the PIN1 transporter participate in the induction of somatic embryogenesis (SE) and the development of somatic embryos. The results show that IAA levels gradually increase during pre-treatment and accumulate in the chloroplast. During pre-treatment and the globular stage of SE in C...
November 8, 2017: Protoplasma
https://www.readbyqxmd.com/read/29116785/a-positive-allosteric-modulator-of-the-serotonin-5-ht2c-receptor-for-obesity
#19
Javier García-Cárceles, Juan M Decara, Henar Vázquez-Villa, Ramón Rodríguez, Eva Codesido, Jacobo Cruces, José Brea, María I Loza, Francisco Alén, Joaquin Botta, Peter J McCormick, Juan A Ballesteros, Bellinda Benhamú, Fernando Rodríguez de Fonseca, María L López-Rodríguez
The 5-HT2CR agonist lorcaserin, clinically approved for the treatment of obesity, causes important side effects mainly related to subtype selectivity. In the search for 5-HT2CR allosteric modulators as safer antiobesity drugs, a chemical library from Vivia Biotech was screened using ExviTech platform. Structural modifications of identified hit VA240 in synthesized analogues 6-41 afforded compound 11 (N-[(1-benzyl-1H-indol-3-yl)methyl]pyridin-3-amine, VA012), which exhibited dose-dependent enhancement of serotonin efficacy, no significant off-target activities, and low binding competition with serotonin or other orthosteric ligands...
November 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29113509/the-microbial-metabolite-indole-3-propionic-acid-improves-glucose-metabolism-in-rats-but-does-not-affect-behaviour
#20
Anders Abildgaard, Betina Elfving, Marianne Hokland, Gregers Wegener, Sten Lund
CONTEXT: We have previously shown that an antidepressant-like effect of probiotics in rats was associated with a higher plasma level of the microbial tryptophan metabolite indole-3-propionic acid (IPA). OBJECTIVE: We therefore wanted to study the isolated effect of IPA on behaviour and glucose metabolism in rats. METHODS: Male Sprague-Dawley rats were fed control or IPA-enriched diet for six weeks (n = 12 per group) and assessed in the elevated plus maze, open field and forced swim test...
November 7, 2017: Archives of Physiology and Biochemistry
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