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Adventitious root*

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https://www.readbyqxmd.com/read/29890434/indole-3-butyric-acid-mediates-antioxidative-defense-systems-to-promote-adventitious-rooting-in-mung-bean-seedlings-under-cadmium-and-drought-stresses
#1
Shi-Weng Li, Xiao-Ying Zeng, Yan Leng, Lin Feng, Xiao-Hu Kang
In vitro experiments were performed to determine whether auxin can mediate the formation of adventitious roots in response to heavy metal and drought stresses using a model rooting plant, mung bean [Vigna radiata (L.) Wilczek]. The treatments with CdCl2 or mannitol alone significantly inhibited the formation and growth of adventitious roots in mung bean seedlings. In contrast, when CdCl2 or mannitol was applied together with indole-3-butyric acid (IBA), IBA considerably cancelled the inhibition of adventitious rooting by stresses...
June 8, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29890390/hydrogen-sulfide-acts-downstream-of-methane-to-induce-cucumber-adventitious-root-development
#2
Ninghai Kou, Zhixin Xiang, Weiti Cui, Longna Li, Wenbiao Shen
Previous results have shown that hydrogen sulfide (H2 S), mainly catalyzed by l-cysteine desulfhydrase (DES) in plants, triggers adventitious rooting. The objective of this study was to test whether H2 S is involved in methane (CH4 )-induced adventitious root development in cucumber explants. First, we observed that the activities of DES, endogenous H2 S production, and thereafter adventitious root development were induced by CH4 and NaHS (an H2 S donor). Some responses were sensitive to hypotaurine (HT; a scavenger of H2 S), showing that endogenous H2 S production and adventitious rooting were obviously blocked...
June 2, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29884985/cellular-dynamics-during-maturation-related-decline-of-adventitious-root-formation-in-forest-tree-species
#3
Alberto Pizarro, Carmen Díaz-Sala
Adventitious root formation is a process in which roots are induced, from determined or differentiated cells that have not been specified to develop a root, at positions where they do not normally occur during development. In forest tree species, a decline in the capacity to form adventitious roots from similar cell types in stem cuttings is associated with tree age and maturity. This decline limits the success of vegetative propagation of selected adult trees. The joint action of local signals and a dynamic cascade of regulatory changes in gene expression, resulting in stereotypical cell division patterns, regulate cell fate changes that enable a somatic differentiated cell to reactivate meristem programs towards the induction of an adventitious root meristem...
June 9, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29870863/the-effect-of-graphene-oxide-on-adventitious-root-formation-and-growth-in-apple
#4
Feihong Li, Chao Sun, Xuehan Li, Xinyi Yu, Chao Luo, Yanying Shen, Shenchun Qu
Graphene, a new type of nanomaterial, has unique physical properties and important potential biological applications. However, few studies have been conducted on the environmental impact of graphene. Therefore, to explore the effect of graphene on plants, three-week-old, tissue-cultured 'Gala' apple plants (Malus domestica) were treated with different concentrations (0, 0.1, 1, 10 mg/L) of graphene oxide (GO) and examined after 40 days. Results indicated that adventitious root length, moisture content and the number of lateral roots were all inhibited by 0...
May 30, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29859915/spectral-lights-trigger-biomass-accumulation-and-production-of-antioxidant-secondary-metabolites-in-adventitious-root-cultures-of-stevia-rebaudiana-bert
#5
Muhammad Idrees, Bibi Sania, Bibi Hafsa, Sana Kumari, Haji Khan, Hina Fazal, Ishfaq Ahmad, Fazal Akbar, Naveed Ahmad, Sadeeq Ali, Nisar Ahmad
Stevia rebaudiana (S. rebaudiana) is the most important therapeutic plant species and has been accepted as such worldwide. It has a tendency to accumulate steviol glycosides, which are 300 times sweeter than marketable sugar. Recently, diabetic patients commonly use this plant as a sugar substitute for sweet taste. In the present study, the effects of different spectral lights were investigated on biomass accumulation and production of secondary metabolites in adventitious root cultures of S. rebaudiana. For callus development, leaf explants were excised from seed-derived plantlets and inoculated on a Murashige and Skoog (MS) medium containing the combination of 2,4-dichlorophenoxy acetic acid (2, 4-D, 2...
May 30, 2018: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/29794259/a-proteomics-analysis-of-adventitious-root-formation-after-leaf-removal-in-lotus-nelumbo-nucifera-gaertn
#6
Cheng Libao, Liu Huiying, Jiang Runzhi, Li Shuyan
The formation of adventitious roots (ARs) is an important process for lotus (Nelumbo nucifera), which does not have a well-formed main root. In lotus, the removal of leaves above the waterline significantly promoted AR formation, while the removal of leaves below the waterline inhibited AR formation. Proteins were identified using isobaric tags for relative and absolute quantization technique. The number of proteins decreased with increasing sequencing coverage, and most of the identified proteins had fewer than 10 peptides...
May 25, 2018: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/29788353/hormonal-regulation-in-adventitious-roots-and-during-their-emergence-under-waterlogged-conditions-in-wheat-triticum-aestivum-l
#7
Tran-Nguyen Nguyen, Pham Anh Tuan, Shalini Mukherjee, SeungHyun Son, Belay T Ayele
To gain insights into the molecular mechanisms underlying hormonal regulation in adventitious roots and during their emergence under waterlogged conditions in wheat, the present study investigated transcriptional regulation of genes related to hormone metabolism and transport in the root and stem node tissues. Waterlogging-induced inhibition of axile root elongation and lateral root formation, and promotion of surface adventitious and axile root emergence and aerenchyma formation are associated with enhanced expression levels of ethylene biosynthesis genes, ACS7 and ACO2, in both tissues...
May 18, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29778014/expression-of-grape-acs1-in-tomato-decreases-ethylene-and-alters-the-balance-between-auxin-and-ethylene-during-shoot-and-root-formation
#8
Xia Ye, Mengmeng Fu, Yu Liu, Dongliang An, Xianbo Zheng, Bin Tan, Jidong Li, Jun Cheng, Wei Wang, Jiancan Feng
Ethylene plays an important role in the grape rachis, where its production can be 10 times higher than in the berry. VvACS1 is the only rachis-specific ACC synthase (ACS) gene, and its expression is coincident with ethylene production in the rachis of Vitis vinifera 'Thompson seedless'. VvACS1 was cloned and ectopically expressed in tomato (Solanum lycopersicum 'Moneymaker'). Lateral buds were increased in two- or four-week-old 35s∷VvACS1 transgenic tomato plants after transplanting. Compared with wild-type (WT) plants, the transgenic tomato plants showed higher expression of the VvACS1 gene in the flowers, leaves, rachis, and fruits...
May 4, 2018: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29774547/petunia-as-model-for-elucidating-adventitious-root-formation-and-mycorrhizal-symbiosis-at-the-nexus-of-physiology-genetics-microbiology-and-horticulture
#9
Uwe Druege, Philipp Franken
Adventitious root formation in cuttings and establishment of arbuscular mycorrhizal symbiosis reflect the enormous plasticity of plants and are key factors in the efficient and sustainable clonal propagation and production of ornamental crops. Based on the high importance of Petunia hybrida for the European and US annual bedding plant markets and its suitability as a model for basic plant sciences, petunia has been established as an experimental system for elucidating the molecular and physiological processes underlying adventitious root formation and mycorrhizal symbiosis...
May 17, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29755501/enhanced-conjugation-of-auxin-by-gh3-enzymes-leads-to-poor-adventitious-rooting-in-carnation-stem-cuttings
#10
Antonio Cano, Ana Belén Sánchez-García, Alfonso Albacete, Rebeca González-Bayón, María Salud Justamante, Sergio Ibáñez, Manuel Acosta, José Manuel Pérez-Pérez
Commercial carnation ( Dianthus caryophyllus ) cultivars are vegetatively propagated from axillary stem cuttings through adventitious rooting; a process which is affected by complex interactions between nutrient and hormone levels and is strongly genotype-dependent. To deepen our understanding of the regulatory events controlling this process, we performed a comparative study of adventitious root (AR) formation in two carnation cultivars with contrasting rooting performance, "2101-02 MFR" and "2003 R 8", as well as in the reference cultivar "Master"...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29744274/genetic-linkage-map-and-qtl-identification-for-adventitious-rooting-traits-in-red-gum-eucalypts
#11
Murugan Sumathi, Vijaya Kumar Waman Bachpai, A Mayavel, Modhumita Ghosh Dasgupta, Binai Nagarajan, D Rajasugunasekar, Veerasamy Sivakumar, Ramasamy Yasodha
The eucalypt species, Eucalyptus tereticornis and Eucalyptus camaldulensis , show tolerance to drought and salinity conditions, respectively, and are widely cultivated in arid and semiarid regions of tropical countries. In this study, genetic linkage map was developed for interspecific cross E. tereticornis  ×  E. camaldulensis using pseudo-testcross strategy with simple sequence repeats (SSRs), intersimple sequence repeats (ISSRs), and sequence-related amplified polymorphism (SRAP) markers. The consensus genetic map comprised totally 283 markers with 84 SSRs, 94 ISSRs, and 105 SRAP markers on 11 linkage groups spanning 1163...
May 2018: 3 Biotech
https://www.readbyqxmd.com/read/29720823/-in-vitro-induction-and-generation-of-tetraploid-plants-of-sophora-tonkinensis-gapnep
#12
Kun Hua Wei, Jian Ping Xu, Lin Xuan Li, Jin Yuan Cai, Jian Hua Miao, Min Hui Li
Background: Sophora tonkinensis Gapnep. is an important medical plant in China. Early researches of S. tonkinensis were focused on rapid propagation and quality analysis of in vitro tissue culture plantlet, and still no research focuses on the plant breeding of and there were no excellent varieties for artificial cultivation of S. tonkinensis . Objective: To set up a method to generate and select the best varieties of S. tonkinensis by polyploid breeding after induction by colchicine treatment...
April 2018: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29709027/a-comprehensive-phylogeny-of-auxin-homeostasis-genes-involved-in-adventitious-root-formation-in-carnation-stem-cuttings
#13
Ana Belén Sánchez-García, Sergio Ibáñez, Antonio Cano, Manuel Acosta, José Manuel Pérez-Pérez
Understanding the functional basis of auxin homeostasis requires knowledge about auxin biosynthesis, auxin transport and auxin catabolism genes, which is not always directly available despite the recent whole-genome sequencing of many plant species. Through sequence homology searches and phylogenetic analyses on a selection of 11 plant species with high-quality genome annotation, we identified the putative gene homologs involved in auxin biosynthesis, auxin catabolism and auxin transport pathways in carnation (Dianthus caryophyllus L...
2018: PloS One
https://www.readbyqxmd.com/read/29701164/characterization-biometric-and-morphophysiological-of-peach-rootstock-seeds-using-images-of-their-seedling-vigor
#14
Aline Das Graças Souza, Oscar Jose Smiderle, Valmor Joao Bianchi
BACKGROUND: This study aimed to evaluate the efficiency of using the computerized imaging seed analysis system (SAS) in the biometric and morphophysiological characterization of seeds and the initial growth of seedlings from peach rootstocks. METHODS: The experimental design was completely randomized with five replicates of 20 seeds. The variables analyzed were degree of seed humidity, length and width of seeds measured by SAS technology and manual measurements, mean germination time, germination percentage, radicle length and width, taproot length, length of the aerial part and taproot/aerial part ratio...
April 26, 2018: Recent Patents on Food, Nutrition & Agriculture
https://www.readbyqxmd.com/read/29692105/-effects-of-ca-2-on-nitric-oxide-induced-adventitious-rooting-in-cucumber-under-drought-stress
#15
Chun Lan Li, Li Juan Niu, Lin Li Hu, Wei Biao Liao, Yue Chen
Cucumber (Cucumis sativus L. 'Xinchun 4') was used to explore the relationship between nitric oxide (NO) and calcium (Ca2+ ) during adventitious rooting under drought stress. Rooting parameters, endogenous Ca2+ fluorescent intensity and the antioxidant enzymes activity (SOD, CAT and APX) in cucumber explants under drought stress were investigated. The results showed that treatment with 200 μmol·L-1 CaCl2 and 0.05% PEG significantly improved the number and length of adventitious root in cucumber explants under drought stress, while the application of Ca2+ chelating agent (EGTA) and channel inhibitor (BAPTA/AM) significantly decreased NO-induced number and length of adventitious root under drought stress...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29680635/recruitment-of-ic-wox-genes-in-root-evolution
#16
REVIEW
Wu Liu, Lin Xu
Root evolution has resulted in the extant bifurcating roots in lycophytes, adventitious/lateral roots in euphyllophytes (ferns and seed plants), and primary roots in seed plants. Here, we hypothesize a role for intermediate-clade-WUSCHEL-RELATED HOMEOBOX (IC-WOX) genes in root evolution. IC-WOX might not be specifically involved in lycophyte bifurcation rooting. In the fern Ceratopteris richardii, IC-WOX is expressed in adventitious/lateral root founder cells. In the seed plant Arabidopsis thaliana, there are two IC-WOX subclades, AtWOX11/12 and AtWOX8/9, in adventitious and primary root founder cells, respectively...
June 2018: Trends in Plant Science
https://www.readbyqxmd.com/read/29666352/quantitative-trait-loci-mapping-for-stomatal-traits-in-interspecific-hybrids-of-eucalyptus
#17
M Sumathi, V K W Bachpai, B Deeparaj, A Mayavel, Modhumita Ghosh Dasgupta, B Nagarajan, D Rajasugunasekar, V Sivakumar, R Yasodha
Eucalyptus is an important industrial species with tolerance to drought and salt stress. Genetic improvement activities including quantitative trait loci (QTL) mapping for pulping and adventitious rooting traits are in progress, but no information is available on the genomic regions on adaptive traits such as stomatal characteristics. In this study, an interspecific cross between Eucalyptus tereticornis and E. grandis was generated for the development of genetic map and QTL identification for stomatal traits...
March 2018: Journal of Genetics
https://www.readbyqxmd.com/read/29628977/erratum-blood-flow-improving-activity-of-methyl-jasmonate-treated-adventitious-roots-of-mountain-ginseng
#18
Young-Hwan Ban, Yeseul Cha, Jieun Choi, Eun Suk An, Ji Young Lee, Nu Ry Han, Da Woom Seo, Gooyoung Jung, Da-Hye Jeong, Man Hee Rhee, Ehn-Kyoung Choi, Yun-Bae Kim
[This corrects the article on p. 105 in vol. 33, PMID: 28747975.].
March 2018: Laboratory Animal Research
https://www.readbyqxmd.com/read/29604522/comparative-adventitious-root-development-in-pre-etiolated-and-flooded-arabidopsis-hypocotyls-exposed-to-different-auxins
#19
Cibele Tesser da Costa, Marcos Letaif Gaeta, Jorge Ernesto de Araujo Mariath, Remko Offringa, Arthur Germano Fett-Neto
Adventitious roots (ARs) emerge from stems, leaves or hypocotyls, being strategic for clonal propagation. ARs may develop spontaneously, upon environmental stress or hormonal treatment. Auxins strongly influence AR development (ARD), depending on concentration and kind. However, the role of different types of auxin is rarely compared at the molecular level. Rooting triggered by light exposure and flooding was examined in intact etiolated Arabidopsis thaliana hypocotyls treated with distinct auxin types. Morphological aspects, rooting-related gene expression profiles, and IAA immunolocalization were recorded...
June 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29603748/adventitious-lateral-rooting-the-plasticity-of-root-system-architecture
#20
Yachao Ge, Xing Fang, Wu Liu, Lihong Sheng, Lin Xu
Root formation under natural conditions is plastic in response to multiple signals. Recent studies suggested that the WUSCHEL-RELATED HOMEOBOX11 (WOX11)-mediated adventitious root (AR) formation pathway can occur in the primary root (PR) in Arabidopsis thaliana, resulting in the production of a specific type of lateral roots (LRs) in response to wounding or environmental signals. This process differs from the previously characterized process for LR development, which does not require WOX11. The WOX11-mediated PR-derived roots can be considered like LRs that exhibit an "adventitious" feature...
March 30, 2018: Physiologia Plantarum
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