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Adventitious root*

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https://www.readbyqxmd.com/read/28212614/transcriptomic-profiling-provides-molecular-insights-into-hydrogen-peroxide-induced-adventitious-rooting-in-mung-bean-seedlings
#1
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
#2
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/28157579/glucose-and-sucrose-differentially-modify-cell-proliferation-in-maize-during-germination
#3
Aurora Lara-Núñez, Brendy B García-Ayala, Sara M Garza-Aguilar, Jesús Flores-Sánchez, Victor A Sánchez-Camargo, Carlos E Bravo-Alberto, Sonia Vázquez-Santana, Jorge M Vázquez-Ramos
Glucose and sucrose play a dual role: as carbon and energy sources and as signaling molecules. In order to address the impact that sugars may have on maize seeds during germination, embryo axes were incubated with or without either of the two sugars. Expression of key cell cycle markers and protein abundance, cell patterning and de novo DNA synthesis in root meristem zones were analyzed. Embryo axes without added sugars in imbibition medium were unable to grow after 7 days; in sucrose, embryo axes developed seminal and primary roots with numerous root hairs, whereas in glucose axes showed a twisted morphology, no root hair formation but callus-like structures on adventitious and primary seminal roots...
January 21, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28123323/comparative-analysis-of-the-transcriptomes-and-primary-metabolite-profiles-of-adventitious-roots-of-five-panax-ginseng-cultivars
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
https://www.readbyqxmd.com/read/27988808/inheritance-and-quantitative-trail-loci-mapping-of-adventitious-root-numbers-in-cucumber-seedlings-under-waterlogging-conditions
#11
Xuewen Xu, Jing Ji, Qiang Xu, Xiaohua Qi, Xuehao Chen
The hypocotyl-derived adventitious root (AR) is an important morphological acclimation to waterlogging stress; however, its genetic basis has not been adequately understood. In the present study, a mixed major gene plus polygene inheritance model was used to analyze AR numbers (ARN) 7 days after waterlogging treatment in six generations (P1, P2, F1, B1, B2, and F2), using cucumber waterlogging tolerant line Zaoer-N and sensitive Pepino as parents. The results showed that the genetic model D-4, mixed one negative dominance major gene and additive-dominance polygenes, is the best-fitting genetic model for waterlogging-triggered ARN phenotype...
December 17, 2016: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/27925006/cryopreservation-of-adventitious-roots-of-cleome-rosea-vahl-cleomaceae-using-a-vitrification-technique-and-assessment-of-genetic-stability
#12
L Da Silva Cordeiro, C Simoes-Gurgel, N Albarello
BACKGROUND:  Cleome rosea, a Brazilian native species, has medicinal potential. Previously a cryopreservation protocol for in vitro roots using the vitrification solution PVS2 has been developed. However, the genetic stability of the cryopreserved material is yet to be assessed. OBJECTIVES: To evaluate the effects of loading and vitrification solutions (PVS2 and PVS3) on post-cryopreservation recovery of C. rosea roots, and to assess their genetic stability using Random Amplified Polymorphic DNA (RAPD) markers...
July 2016: Cryo Letters
https://www.readbyqxmd.com/read/27924132/efficient-in-vitro-propagation-of-artemisia-nilagirica-var-nilagirica-indian-wormwood-and-assessment-of-genetic-fidelity-of-micropropagated-plants
#13
Smita Shinde, Joseph Kadanthottu Sebastian, Jyothi Ramesh Jain, Manohar Shirugumbi Hanamanthagouda, Hosakatte Niranjana Murthy
A reliable protocol has been established for in vitro propagation of Artemisia nilagirica var. nilagirica (Indian wormwood), a valuable medicinal plant from India. A highly proliferating organogenic callus was obtained on Murashige and Skoog (MS) medium supplemented with 2.5 µM IAA when nodal explants were cultured on MS medium supplemented with various growth regulators. Further, highest regeneration frequency (83.3 %) of adventitious shoots was observed, when the callus was sub-cultured on MS medium supplemented with 6-benzylaminopurine (BAP; 2...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27909790/strigolactones-affect-tomato-hormone-profile-and-somatic-embryogenesis
#14
Yuanli Wu, Evgenia Dor, Joseph Hershenhorn
Exogenously applied GR24 affected somatic embryo formation and morphogenesis of strigolactone-deficient tomato mutant through cross-talk with auxins and cytokinins indicating involvement of SLs in the embryogenic process. Strigolactones (SLs) mediate the regulation of plant responses to the environment through cross-talk with other plant hormones, especially auxins. Auxins play a crucial role in coordinating the morphogenesis and development of plant reproductive organs, including the signal-transduction cascade leading to the reprogramming of gene-expression patterns before embryo formation...
December 1, 2016: Planta
https://www.readbyqxmd.com/read/27889521/azacytidine-and-mir156-promote-rooting-in-adult-but-not-in-juvenile-arabidopsis-tissues
#15
Mehdi Massoumi, Frans A Krens, Richard G F Visser, Geert-Jan M De Klerk
Poor adventitious root (AR) formation is a major obstacle in micropropagation and conventional vegetative propagation of many crops. It is affected by many endogenous and exogenous factors. With respect to endogenous factors, the phase change from juvenile to adult has a major influence on AR formation and rooting is usually much reduced or even fully inhibited in adult tissues. It has been reported that the phase change is characterized by an increase in DNA-methylation and a decrease in the expression of microRNA156 (miR156)...
January 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/27883217/nitric-oxide-is-involved-in-methane-induced-adventitious-root-formation-in-cucumber
#16
Fang Qi, Zhixin Xiang, Ninghai Kou, Weiti Cui, Daokun Xu, Ren Wang, Dan Zhu, Wenbiao Shen
Our previous studies revealed that methane (CH4 ) induces adventitious rooting in cucumber. However, the corresponding molecular mechanism is still elusive. In this work, we discovered that CH4 triggered the accumulation of nitric oxide (NO) and thereafter cucumber adventitious rooting, mimicking the inducing effects of sodium nitroprusside (SNP) and NONOate (two NO-releasing compounds). Above mentioned responses were sensitive to NO scavenger(s), showing that the accumulation of NO and adventitious root development were respectively impaired...
November 24, 2016: Physiologia Plantarum
https://www.readbyqxmd.com/read/27876840/transcriptome-profiling-shows-gene-regulation-patterns-in-ginsenoside-pathway-in-response-to-methyl-jasmonate-in-panax-quinquefolium-adventitious-root
#17
Juan Wang, Jinxin Li, Jianli Li, Shujie Liu, Xiaolei Wu, Jing Li, Wenyuan Gao
Here, we combine elicitors and transcriptomics to investigate the inducible biosynthesis of the ginsenoside from the Panax quinquefolium. Treatment of P. quinquefolium adventitious root with methyl jasmonate (MJ) results in an increase in ginsenoside content (43.66 mg/g compared to 8.32 mg/g in control group). Therefore, we sequenced the transcriptome of native and MJ treated adventitious root in order to elucidate the key differentially expressed genes (DEGs) in the ginsenoside biosynthetic pathway. Through DEG analysis, we found that 5,759 unigenes were up-regulated and 6,389 unigenes down-regulated in response to MJ treatment...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27837086/cis-cinnamic-acid-is-a-novel-natural-auxin-efflux-inhibitor-that-promotes-lateral-root-formation
#18
Ward Steenackers, Petr Klíma, Mussa Quareshy, Igor Cesarino, Robert P Kumpf, Sander Corneillie, Pedro Araújo, Tom Viaene, Geert Goeminne, Moritz K Nowack, Karin Ljung, Jiří Friml, Joshua J Blakeslee, Ondřej Novák, Eva Zažímalová, Richard Napier, Wout Boerjan, Bartel Vanholme
Auxin steers numerous physiological processes in plants, making the tight control of its endogenous levels and spatiotemporal distribution a necessity. This regulation is achieved by different mechanisms, including auxin biosynthesis, metabolic conversions, degradation, and transport. Here, we introduce cis-cinnamic acid (c-CA) as a novel and unique addition to a small group of endogenous molecules affecting in planta auxin concentrations. c-CA is the photo-isomerization product of the phenylpropanoid pathway intermediate trans-CA (t-CA)...
January 2017: Plant Physiology
https://www.readbyqxmd.com/read/27831927/a-comparative-proteomic-analysis-for-adventitious-root-formation-in-lotus-root-nelumbo-nucifera-gaertn
#19
Cheng Libao, Jiang Runzhi, Yang Mengli, Li Liangjun, Li Shuyan
Adventitious roots (ARs) directly affect lotus seedling growth and product quality because principal root is not well developed. However, the details of AR formation at the molecular level have not been determined in lotus. Therefore, three stages were chosen to identify the change of proteins abundant during rhizome formation, using isobaric tags for relative and absolute quantization coupled with liquid chromatography-tandem mass spectrometry to gain insight into the molecular mechanisms involved in AR formation...
November 10, 2016: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/27831474/ethylene-and-auxin-interaction-in-the-control-of-adventitious-rooting-in-arabidopsis-thaliana
#20
A Veloccia, L Fattorini, F Della Rovere, A Sofo, S D'Angeli, C Betti, G Falasca, M M Altamura
Adventitious roots (ARs) are post-embryonic roots essential for plant survival and propagation. Indole-3-acetic acid (IAA) is the auxin that controls AR formation; however, its precursor indole-3-butyric acid (IBA) is known to enhance it. Ethylene affects many auxin-dependent processes by affecting IAA synthesis, transport and/or signaling, but its role in AR formation has not been elucidated. This research investigated the role of ethylene in AR formation in dark-grown Arabidopsis thaliana seedlings, and its interaction with IAA/IBA...
December 2016: Journal of Experimental Botany
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