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"Adventitious rooting"

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https://www.readbyqxmd.com/read/28398563/studying-microstructure-and-microstructural-changes-in-plant-tissues-by-advanced-diffusion-magnetic-resonance-imaging-techniques
#1
Darya Morozov, Iris Tal, Odelia Pisanty, Eilon Shani, Yoram Cohen
As sessile organisms, plants must respond to the environment by adjusting their growth and development. Most of the plant body is formed post-embryonically by continuous activity of apical and lateral meristems. The development of lateral adventitious roots is a complex process, and therefore the development of methods that can visualize, non-invasively, the plant microstructure and organ initiation that occur during growth and development is of paramount importance. In this study, relaxation-based and advanced diffusion magnetic resonance imaging (MRI) methods including diffusion tensor (DTI), q-space diffusion imaging (QSI), and double-pulsed-field-gradient (d-PFG) MRI, at 14...
April 8, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28377589/the-arabidopsis-cop9-signalosome-subunit-4-cns4-is-involved-in-adventitious-root-formation
#2
Daniel Ioan Pacurar, Monica Lacramioara Pacurar, Abdellah Lakehal, Andrea Mariana Pacurar, Alok Ranjan, Catherine Bellini
The COP9 signalosome (CSN) is an evolutionary conserved multiprotein complex that regulates many aspects of plant development by controlling the activity of CULLIN-RING E3 ubiquitin ligases (CRLs). CRLs ubiquitinate and target for proteasomal degradation a vast number of specific substrate proteins involved in many developmental and physiological processes, including light and hormone signaling and cell division. As a consequence of CSN pleiotropic function, complete loss of CSN activity results in seedling lethality...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28377273/biotechnological-production-of-hyperforin-for-pharmaceutical-formulation
#3
REVIEW
Mariam Gaid, Eline Biedermann, Jendrik Füller, Paul Haas, Sönke Behrends, Rainer Krull, Stephan Scholl, Ute Wittstock, Christel Müller-Goymann, Ludger Beerhues
Hyperforin is a major active constituent of Hypericum perforatum (St. John's wort). It has amazing pharmacological activities, such as antidepressant properties, but it is labile and difficult to synthesize. Its sensitivity and lipophilicity are challenges for processing and formulation. Its chemical complexity provokes approaches of biotechnological production and modification. Dedifferentiated H. perforatum cell cultures lack appropriate storage sites and hence appreciable hyperforin levels. Shoot cultures are capable of forming hyperforin but less suitable for biomass up-scaling in bioreactors...
April 1, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28338952/physiological-and-morphological-responses-to-permanent-and-intermittent-waterlogging-in-seedlings-of-four-evergreen-trees-of-temperate-swamp-forests
#4
Alejandra Zúñiga-Feest, Angela Bustos-Salazar, Fernanda Alves, Vanessa Martinez, Cecilia Smith-Ramírez, Joào Pereira
Waterlogging decreases a plant's metabolism, stomatal conductance (gs) and photosynthetic rate (A); however, some evergreen species show acclimation to waterlogging. By studying both the physiological and morphological responses to waterlogging, the objective of this study was to assess the acclimation capacity of four swamp forest species that reside in different microhabitats. We proposed that species (Luma apiculata [D.C.] Burret. and Drimys winteri J.R. et G. Forster.) abundant in seasonally and intermittently waterlogged areas (SIWA) would have a higher acclimation capacity than species abundant in the inner swamp (Blepharocalyx cruckshanksii [H et A...
March 14, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28321650/the-small-auxin-up-rna-ossaur45-affects-auxin-synthesis-and-transport-in-rice
#5
Yan-Xia Xu, Meng-Zhu Xiao, Yan Liu, Jun-Liang Fu, Yi He, De-An Jiang
This research is the first to demonstrate that OsSAUR45 is involved in plant growth though affecting auxin synthesis and transport by repressing OsYUCCA and OsPIN gene expression in rice. Small auxin-up RNAs (SAURs) comprise a large multigene family and are rapidly activated as part of the primary auxin response in plants. However, little is known about the role of SAURs in plant growth and development, especially in monocots. Here, we report the biological function of OsSAUR45 in the model plant rice (Oryza sativa)...
March 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28315795/differential-auxin-transport-and-accumulation-in-the-stem-base-lead-to-profuse-adventitious-root-primordia-formation-in-the-aerial-roots-aer-mutant-of-tomato-solanum-lycopersicum-l
#6
F Mignolli, L Mariotti, P Picciarelli, M L Vidoz
The aerial roots (aer) mutant of tomato is characterized by a profuse and precocious formation of adventitious root primordia along the stem. We demonstrated that auxin is involved in the aer phenotype but ruled out higher auxin sensitivity of mutant plants. Interestingly, polar auxin transport was altered in aer, as young seedlings showed a reduced response to an auxin transport inhibitor and higher expression of auxin export carriers SlPIN1 and SlPIN3. An abrupt reduction in transcripts of auxin efflux and influx genes in older aer hypocotyls caused a marked deceleration of auxin transport in more mature tissues...
February 27, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28303391/transcriptional-sequencing-and-analysis-of-major-genes-involved-in-the-adventitious-root-formation-of-mango-cotyledon-segments
#7
Yun-He Li, Hong-Na Zhang, Qing-Song Wu, Gloria K Muday
A total of 74,745 unigenes were generated and 1975 DEGs were identified. Candidate genes that may be involved in the adventitious root formation of mango cotyledon segment were revealed. Adventitious root formation is a crucial step in plant vegetative propagation, but the molecular mechanism of adventitious root formation remains unclear. Adventitious roots formed only at the proximal cut surface (PCS) of mango cotyledon segments, whereas no roots were formed on the opposite, distal cut surface (DCS). To identify the transcript abundance changes linked to adventitious root development, RNA was isolated from PCS and DCS at 0, 4 and 7 days after culture, respectively...
March 16, 2017: Planta
https://www.readbyqxmd.com/read/28256503/the-developmental-and-environmental-regulation-of-gravitropic-setpoint-angle-in-arabidopsis-and-bean
#8
Suruchi Roychoudhry, Martin Kieffer, Marta Del Bianco, Che-Yang Liao, Dolf Weijers, Stefan Kepinski
Root and shoot branches are major determinants of plant form and critical for the effective capture of resources below and above ground. These branches are often maintained at specific angles with respect to gravity, known as gravitropic set point angles (GSAs). We have previously shown that the mechanism permitting the maintenance of non-vertical GSAs is highly auxin-dependent and here we investigate the developmental and environmental regulation of root and shoot branch GSA. We show that nitrogen and phosphorous deficiency have opposing, auxin signalling-dependent effects on lateral root GSA in Arabidopsis: while low nitrate induces less vertical lateral root GSA, phosphate deficiency results in a more vertical lateral root growth angle, a finding that contrasts with the previously reported growth angle response of bean adventitious roots...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28250598/impacts-of-methyl-jasmonate-and-phenyl-acetic-acid-on-biomass-accumulation-and-antioxidant-potential-in-adventitious-roots-of-ajuga-bracteosa-wall-ex-benth-a-high-valued-endangered-medicinal-plant
#9
Sabahat Saeed, Huma Ali, Tariq Khan, Waqas Kayani, Mubarak Ali Khan
Ajuga bracteosa is a medicinally important plant globally used in the folk medicine against many serious ailments. In the present study, effects of two significant elicitors, methyl jasmonate (Me-J) and phenyl acetic acid (PAA) were studied on growth parameters, secondary metabolites production, and antioxidant potential in adventitious root suspension cultures of A. bracteosa. The results showed a substantial increase in biomass accumulation, exhibiting longer log phases of cultures growth in response to elicitor treatments, in comparison to control...
January 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/28231330/the-effects-of-exogenous-hormones-on-rooting-process-and-the-activities-of-key-enzymes-of-malus-hupehensis-stem-cuttings
#10
Wangxiang Zhang, Junjun Fan, Qianqian Tan, Mingming Zhao, Ting Zhou, Fuliang Cao
Malus hupehensis is an excellent Malus rootstock species, known for its strong adverse-resistance and apomixes. In the present study, stem cuttings of M. hupehensis were treated with three types of exogenous hormones, including indole acetic acid (IAA), naphthalene acetic acid (NAA), or green growth regulator (GGR). The effects and mechanisms of exogenous hormone treatment and antioxidant enzyme activity on adventitious root formation were investigated. The results showed that the apparent morphology of the adventitious root had four stages, including root pre-emergence stage (S0), early stage of root formation (S1), massive root formation stage (S2), and later stage of root formation (S3)...
2017: PloS One
https://www.readbyqxmd.com/read/28223992/carbon-monoxide-is-involved-in-hydrogen-gas-induced-adventitious-root-development-in-cucumber-under-simulated-drought-stress
#11
Yue Chen, Meng Wang, Linli Hu, Weibiao Liao, Mohammed M Dawuda, Chunlan Li
Hydrogen gas (H2) and carbon monoxide (CO) are involved in plant growth and developmental processes and may induce plant tolerance to several stresses. However, the independent roles and interaction effect of H2 and CO in adventitious root development under drought conditions have still not received the needed research attention. We hypothesize that there exists crosstalk between H2 and CO during adventitious root development under drought stress. The results of our current study revealed that 50% (v/v) hydrogen-rich water (HRW), 500 μM Hemin (the CO donor) and 30% (w/v) CO aqueous solution apparently promoted the development of adventitious roots in cucumber explants (Cucumis Sativus L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28212614/transcriptomic-profiling-provides-molecular-insights-into-hydrogen-peroxide-induced-adventitious-rooting-in-mung-bean-seedlings
#12
Shi-Weng Li, Yan Leng, Rui-Fang Shi
BACKGROUND: Hydrogen peroxide (H2O2) has been known to function as a signalling molecule involved in the modulation of various physiological processes in plants. H2O2 has been shown to act as a promoter during adventitious root formation in hypocotyl cuttings. In this study, RNA-Seq was performed to reveal the molecular mechanisms underlying H2O2-induced adventitious rooting. RESULTS: RNA-Seq data revealed that H2O2 treatment greatly increased the numbers of clean reads and expressed genes and abundance of gene expression relative to the water treatment...
February 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28209181/de-novo-sequencing-and-comparative-transcriptome-analysis-of-adventitious-root-development-induced-by-exogenous-indole-3-butyric-acid-in-cuttings-of-tetraploid-black-locust
#13
Jine Quan, Seng Meng, Erhui Guo, Sheng Zhang, Zhong Zhao, Xitian Yang
BACKGROUND: Indole-3-butyric acid (IBA) is applied to the cuttings of various plant species to induce formation of adventitious roots (ARs) in commercial settings. Tetraploid black locust is an attractive ornamental tree that is drought resistant, sand tolerant, can prevent sand erosion and has various commercial uses. To further elucidate the mechanisms of AR formation, we used Illumina sequencing to analyze transcriptome dynamics and differential gene expression at four developmental stages in control (CK) and IBA-treated groups...
February 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28123323/comparative-analysis-of-the-transcriptomes-and-primary-metabolite-profiles-of-adventitious-roots-of-five-panax-ginseng-cultivars
#14
Yun Sun Lee, Hyun-Seung Park, Dong-Kyu Lee, Murukarthick Jayakodi, Nam-Hoon Kim, Sang-Choon Lee, Atreyee Kundu, Dong-Yup Lee, Young Chang Kim, Jun Gyo In, Sung Won Kwon, Tae-Jin Yang
BACKGROUND: Various Panax ginseng cultivars exhibit a range of diversity for morphological and physiological traits. However, there are few studies on diversity of metabolic profiles and genetic background to understand the complex metabolic pathway in ginseng. METHODS: To understand the complex metabolic pathway and related genes in ginseng, we tried to conduct integrated analysis of primary metabolite profiles and related gene expression using five ginseng cultivars showing different morphology...
January 2017: Journal of Ginseng Research
https://www.readbyqxmd.com/read/28122511/distribution-of-some-pectic-and-arabinogalactan-protein-epitopes-during-solanum-lycopersicum-l-adventitious-root-development
#15
Katarzyna Sala, Katarzyna Malarz, Peter W Barlow, Ewa U Kurczyńska
BACKGROUND: The adventitious roots (AR) of plants share the same function as primary and lateral roots (LR), although their development is mainly an adaptive reaction to stress conditions. Regeneration of grafted plants is often accompanied by AR formation thus making the grafting technique a good model for studying AR initiation and development and their means of emergence. Pectins and arabinogalactan proteins (AGP) are helpful markers of particular cellular events, such as programmed cell death (PCD), elongation, proliferation or other differentiation events that accompany AR development...
January 25, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28117710/new-pesticidal-diterpenoids-from-vellozia-gigantea-velloziaceae-an-endemic-neotropical-plant-living-in-the-endangered-brazilian-biome-rupestrian-grasslands
#16
Mariana C Ferreira, Charles L Cantrell, Stephen O Duke, Abbas Ali, Luiz H Rosa
Vellozia gigantea is a rare, ancient, and endemic neotropical plant present in the Brazilian Rupestrian grasslands. The dichloromethane extract of V. gigantea adventitious roots was phytotoxic against Lactuca sativa, Agrostis stolonifera, and Lemna paucicostata, and showed larvicidal activity against Aedes aegypti. Phytotoxicity bioassay-directed fractionation of the extract revealed one new isopimaradiene, 8(9),15-isopimaradien-1,3,7,11-tetraone, and three new cleistanthane diterpenoids, 7-oxo-8,11,13-cleistanthatrien-3-ol, 3,20-epoxy-7-oxo-8,11,13-cleistanthatrien-3-ol, and 20-nor-3,7-dioxo-1,8,11,13-cleistanthatetraen-10-ol...
January 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28105652/lsp1-a-responsive-protein-from-meyerozyma-guilliermondii-elicits-defence-response-and-improves-glycyrrhizic-acid-biosynthesis-in-glycyrrhiza-uralensis-fisch-adventitious-roots
#17
Juan Wang, Jianli Li, Jing Li, Jinxin Li, Shujie Liu, Wenyuan Gao
This research explored the effects of protein and polysaccharide in Meyerozyma guilliermondii on active compounds in Glycyrrhiza uralensis Fisch adventitious roots. In this study, a responsive protein LSP1 was purified from the Meyerozyma guilliermondii since the excellent induction. The contents of total flavonoids (3.46 mg · g(-1) ), glycyrrhizic acid (0.41 mg · g(-1) ), glycyrrhetinic acid (0.41 mg · g(-1) ) and polysaccharide (94.49 mg · g(-1) ) in adventitious root peaked at LSP1 group, which were 1...
January 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28086804/comparative-analysis-of-the-root-transcriptomes-of-cultivated-sweetpotato-ipomoea-batatas-l-lam-and-its-wild-ancestor-ipomoea-trifida-kunth-g-don
#18
Sathish K Ponniah, Jyothi Thimmapuram, Ketaki Bhide, Venu Kal Kalavacharla, Muthusamy Manoharan
BACKGROUND: The complex process of formation of storage roots (SRs) from adventitious roots affects sweetpotato yield. Identifying the genes that are uniquely expressed in the SR forming cultivated species, Ipomoea batatas (Ib), and its immediate ancestral species, Ipomoea trifida (It), which does not form SRs, may provide insights into the molecular mechanisms underlying SR formation in sweetpotato. RESULTS: Illumina paired-end sequencing generated ~208 and ~200 million reads for Ib and It, respectively...
January 13, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28064248/mir393-mediated-auxin-signaling-regulation-is-involved-in-root-elongation-inhibition-in-response-to-toxic-aluminum-stress-in-barley
#19
Bin Bai, Hongwu Bian, Zhanghui Zeng, Ning Hou, Bo Shi, Junhui Wang, Muyuan Zhu, Ning Han
High-throughput small RNA sequencing has identified several potential aluminum (Al)-responsive microRNAs (miRNAs); however, their regulatory role remains unknown. Here, we identified two miR393 family members in barley, and confirmed two target genes-HvTIR1 and HvAFB-through a modified form of 5'-RACE (rapid amplification of cDNA ends) as well as degradome data analysis. Furthermore, we investigated the biological function of the miR393/target module in root development and its Al stress response. The investigation showed that miR393 affected root growth and adventitious root number by altering auxin sensitivity...
January 7, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28000512/developmental-role-of-phenylalanine-ammonia-lyase-pal-and-cinnamate-4-hydroxylase-c4h-genes-during-adventitious-rooting-of-juglans-regia-l-microshoots
#20
Monireh Cheniany, Ali Ganjeali
Phenylalanine-ammonia-lyase and cinnamate-4-hydroxylase play important role in the phenylpropanoid pathway, which produces many biologically important secondary metabolites participating in normal plant development. Flavonol quercetin is the main representant of these compounds that has been identified in numerous Juglans spp. In this survey, the developmental expression patterns of PAL and C4H genes during in vitro rooting of two walnut cultivars 'Sunland' and 'Howard' was examined by RT-PCR. To understand the potential role in rooting, the changing pattern of endogenous content of quercetin was also analyzed by HPLC...
December 2016: Acta Biologica Hungarica
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