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1. Cytokinin Inhibits Lateral Root Development at the Earliest Stages of Lateral Root Primordium Initiation in Maize Primary Root

Author:
Márquez, Gonzalo; Alarcón, M. Victoria; Salguero, Julio
Source:
Journal of plant growth regulation 2019 v.38 no.1 pp. 83-92
ISSN:
0721-7595
Subject:
root primordia,   etc   ; auxins; corn; cytokinins; developmental stages; hormones;     Show all 6 Subjects
Abstract:
... Root architecture is basically controlled by auxin and cytokinin, which antagonize in the formation of lateral roots (LRs) along the primary root (PR) axis. Several mechanisms have been proposed to explain the interaction between these two hormones, cytokinin being the hormone that inhibits LR formation. The analysis of the cytokinin effect on LR formation using LRs in several stages of developmen ...
DOI:
10.1007/s00344-018-9811-1

2. Endogenous hypoxia in lateral root primordia controls root architecture by antagonizing auxin signaling in Arabidopsis

Author:
Shukla, Vinay; Lombardi, Lara; Iacopino, Sergio; Pencik, Ales; Novak, Ondrej; Perata, Pierdomenico; Giuntoli, Beatrice; Licausi, Francesco
Source:
Molecular plant 2019
ISSN:
1674-2052
Subject:
root primordia,   etc   ; Arabidopsis thaliana; aerobic conditions; auxins; genes; hypoxia; loss-of-function mutation; metabolism; models; mutants; niches; oxygen; transcription factors;     Show all 13 Subjects
Abstract:
... As non-photosynthesizing organs, roots are dependent on diffusion of oxygen from the external environment and, in some instances, from the shoot for their aerobic metabolism. Establishment of hypoxic niches in the developing tissues of plants has been postulated as a consequence of insufficient diffusion of oxygen to satisfy the demands throughout development. Here, we report that such niches are ...
DOI:
10.1016/j.molp.2019.01.007

3. Comprehensive expression analysis of Arabidopsis GA2-oxidase genes and their functional insights

Author:
Li, Chen; Zheng, Lanlan; Wang, Xuening; Hu, Zhubing; Zheng, Yan; Chen, Qinhua; Hao, Xincai; Xiao, Xiao; Wang, Xuanbin; Wang, Guodong; Zhang, Yonghong
Source:
Plant science 2019 v.285 pp. 1-13
ISSN:
0168-9452
Subject:
root primordia,   etc   ; Arabidopsis thaliana; apical meristems; developmental stages; embryo sac; endosperm; gene expression regulation; gene overexpression; genes; gibberellins; hypocotyls; inflorescences; oxygenases; phenotype; phylogeny; plant development; stress response;     Show all 17 Subjects
Abstract:
... Bioactive gibberellins (GAs) play multiple roles in plant development and stress responses. GA2-oxidases (GA2oxs) are a class of 2-oxoglutarate-dependent dioxygenases that regulate the deactivation of bioactive GAs. In this study, we investigated the phylogeny and domain structures of the seven GA2ox genes present in the Arabidopsis thaliana genome. Comprehensive expression analysis using translat ...
DOI:
10.1016/j.plantsci.2019.04.023

4. Inhibition of adventitious root development in apple rootstocks by cytokinin is based on its suppression of adventitious root primordia formation

Author:
Mao, Jiangping; Zhang, Dong; Meng, Yuan; Li, Ke; Wang, Hui; Han, Mingyu
Source:
Physiologia plantarum 2019 v.166 no.2 pp. 663-676
ISSN:
0031-9317
Subject:
root primordia,   etc   ; abscisic acid; adventitious roots; apples; benzyladenine; cell cycle; cytokinins; gene expression; gene expression regulation; genes; indole acetic acid; rooting; rootstocks; signal transduction;     Show all 14 Subjects
Abstract:
... Cytokinin (CK) inhibits adventitious root (AR) formation in stem cuttings. Little is known, however, about the mechanism underlying the inhibitory effect. In this study, 2 mg l⁻¹ of exogenous 6‐benzyl adenine (6‐BA) was administered to 3 and 7‐day‐old apple rootstocks ‘M.26’ cuttings (3 and 7 days 6‐BA) by transferring them from a rooting medium containing indole‐3‐butanoic acid to the medium cont ...
DOI:
10.1111/ppl.12817

5. Characterization of <i>JsWOX1</i> and <i>JsWOX4</i> during Callus and Root Induction in the Shrub Species <i>Jasminum sambac</i>

Author:
Lu, Ying; Liu, Zhuoyi; Lyu, Meiling; Yuan, Yuan; Wu, Binghua
Source:
Plants 2019 v.8 no.4
ISSN:
2223-7747
Subject:
root primordia,   etc   ; Jasminum sambac; biotechnology; callus; callus formation; cell division; cell growth; gene expression regulation; gene overexpression; homeotic genes; organogenesis; rooting; shrubs; stem cells; transcription (genetics); woody plants;     Show all 16 Subjects
Abstract:
... Plant regeneration in vitro and the underlying molecular regulatory network are of great interest to developmental biology, and have potential applications in agriculture and biotechnology. Cell growth and re-differentiation during de novo organogenesis require the activation and reprogramming of stem cells within the stem cell niche of the tissues. The WUSCHEL-related homeobox (WOX) factors play ...
DOI:
10.3390/plants8040079

6. The Root Cap Cuticle: A Cell Wall Structure for Seedling Establishment and Lateral Root Formation

Author:
Berhin, Alice; de Bellis, Damien; Franke, Rochus B.; Buono, Rafael A.; Nowack, Moritz K.; Nawrath, Christiane
Source:
Cell 2019 v.176 no.6 pp. 1367-1378.e8
ISSN:
0092-8674
Subject:
root primordia,   etc   ; abiotic stress; biosynthesis; cell walls; cutin; deformation; genes; hypersensitivity; mutation; plant cuticle; plant establishment; plant organs; root cap; stem cells; ultrastructure;     Show all 15 Subjects
Abstract:
... The root cap surrounding the tip of plant roots is thought to protect the delicate stem cells in the root meristem. We discovered that the first layer of root cap cells is covered by an electron-opaque cell wall modification resembling a plant cuticle. Cuticles are polyester-based protective structures considered exclusive to aerial plant organs. Mutations in cutin biosynthesis genes affect the co ...
DOI:
10.1016/j.cell.2019.01.005

7. Hydrogen sulfide acts downstream of methane to induce cucumber adventitious root development

Author:
Kou, Ninghai; Xiang, Zhixin; Cui, Weiti; Li, Longna; Shen, Wenbiao
Source:
Journal of plant physiology 2018 v.228 pp. 113-120
ISSN:
0176-1617
Subject:
root primordia,   etc   ; adventitious roots; cucumbers; cysteine; explants; genes; genetic markers; hydrogen sulfide; methane; organogenesis; rooting;     Show all 11 Subjects
Abstract:
... Previous results have shown that hydrogen sulfide (H2S), mainly catalyzed by l-cysteine desulfhydrase (DES) in plants, triggers adventitious rooting. The objective of this study was to test whether H2S is involved in methane (CH4)-induced adventitious root development in cucumber explants. First, we observed that the activities of DES, endogenous H2S production, and thereafter adventitious root de ...
DOI:
10.1016/j.jplph.2018.05.010

8. Activation of seminal root primordia during wheat domestication reveals underlying mechanisms of plant resilience

Author:
Golan, Guy; Hendel, Elisha; Méndez Espitia, Gabriel E.; Schwartz, Nimrod; Peleg, Zvi
Source:
Plant, cell and environment 2018 v.41 no.4 pp. 755-766
ISSN:
0140-7791
Subject:
root primordia,   etc   ; domestication; loci; rehydration; root systems; seedlings; water stress; water uptake; wheat;     Show all 9 Subjects
Abstract:
... Seminal roots constitute the initial wheat root system and provide the main route for water absorption during early stages of development. Seminal root number (SRN) varies among species. However, the mechanisms through which SRN is controlled and in turn contribute to environmental adaptation are poorly understood. Here, we show that SRN increased upon wheat domestication from 3 to 5 due to the ac ...
DOI:
10.1111/pce.13138

9. Identification and expression analysis of the arbuscular mycorrhiza-inducible Rieske non-heme oxygenase Ptc52 gene from tomato

Author:
Molinero-Rosales, Nuria; Martín-Rodríguez, José Ángel; Ho-Plágaro, Tania; García-Garrido, José Manuel
Source:
Journal of plant physiology 2019 v.237 pp. 95-103
ISSN:
0176-1617
Subject:
root primordia,   etc   ; apical meristems; carbon; disease resistance; endodermis; fruits; gene silencing; genes; hyphae; leaf spot; leaves; mycorrhizal fungi; nutrients; oxygenases; phenotype; plant growth; root tips; sequence analysis; tomatoes; vesicular arbuscular mycorrhizae;     Show all 20 Subjects
Abstract:
... Arbuscular mycorrhizal (AM) formation enhances plant growth and fitness through improved uptake of water and mineral nutrients in exchange for carbon compounds to the AM fungus. The fungal structure for the reciprocal exchange of nutrients in the symbiosis is the arbuscule, and defence genes expressed in cells containing arbuscules could play a role in the control of hyphal spread and arbuscule fo ...
DOI:
10.1016/j.jplph.2019.04.009

10. Ectopic expression of ARGOS8 reveals a role for ethylene in root‐lodging resistance in maize

Author:
Shi, Jinrui; Drummond, Bruce J.; Habben, Jeffrey E.; Brugire, Norbert; Weers, Ben P.; Hakimi, Salim M.; Lafitte, H. Renee; Schussler, Jeffrey R.; Mo, Hua; Beatty, Mary; Zastrow‐Hayes, Gina; O'Neill, Dennis
Source:
Theplant journal 2019 v.97 no.2 pp. 378-390
ISSN:
0960-7412
Subject:
root primordia,   etc   ; 1-aminocyclopropane-1-carboxylic acid; biogenesis; cell walls; corn; ethylene; gene expression regulation; gene overexpression; genes; grain yield; juveniles; lodging; mature plants; plant development; transcriptomics; transgenic plants;     Show all 16 Subjects
Abstract:
... Ethylene plays a critical role in many diverse processes in plant development. Recent studies have demonstrated that overexpression of the maize ARGOS8 gene reduces the plant's response to ethylene by decreasing ethylene signaling and enhances grain yield in transgenic maize plants. The objective of this study was to determine the effects of ethylene on the development of nodal roots, which are pr ...
DOI:
10.1111/tpj.14131

11. A novel rejuvenation approach to induce endohormones and improve rhizogenesis in mature Juglans tree

Author:
Liu, Hao; Gao, Ying; Song, Xiaobo; Ma, Qingguo; Zhang, Junpei; Pei, Dong
Source:
Plant methods 2018 v.14 no.1 pp. 13
ISSN:
1746-4811
Subject:
root primordia,   etc   ; Juglans; abscisic acid; cambium; cutting; gibberellic acid; indole acetic acid; juveniles; phloem; rhizogenesis; rooting; shoots; temporal variation; trees;     Show all 14 Subjects
Abstract:
... BACKGROUND: Juglans is a difficult-to-root tree. In the present study, we successfully rejuvenated stock plants by grafting and then burying them horizontally. RESULTS: Rooting rates of rejuvenated shoots were 98.1% 20 days after cutting. We recorded spatial and temporal variation in endogenous indole-3-acetic acid (IAA), abscisic acid (ABA), gibberellin A₃ (GA₃) and zeatin-riboside (ZR) under roo ...
DOI:
10.1186/s13007-018-0280-0
PubMed:
29449873
PubMed Central:
PMC5806478

12. MiR393 and miR390 synergistically regulate lateral root growth in rice under different conditions

Author:
Lu, Yuzhu; Feng, Zhen; Liu, Xuanyu; Bian, Liying; Xie, Hong; Zhang, Changlun; Mysore, Kirankumar S.; Liang, Jiansheng
Source:
BMC plant biology 2018 v.18 no.1 pp. 261
ISSN:
1471-2229
Subject:
root primordia,   etc   ; Oryza sativa; RNA precursors; abscisic acid; auxins; gene overexpression; genetically modified organisms; microRNA; models; phenotype; rice; root growth;     Show all 12 Subjects
Abstract:
... BACKGROUND: Plants have evolved excellent ability of flexibly regulating the growth of organs to adapt to changing environment, for example, the modulation of lateral root development in response to environmental stresses. Despite of fundamental discovery that some microRNAs are involved in this process, the molecular mechanisms of how these microRNAs work together are still largely unknown. RESUL ...
DOI:
10.1186/s12870-018-1488-x

13. An auxin-induced β-type endo-1,4-β-glucanase in poplar is involved in cell expansion and lateral root formation

Author:
Yu, Liangliang; Li, Qiong; Zhu, Yingying; Afzal, MuhammadSaddique; Li, Laigeng
Source:
Planta 2018 v.247 no.5 pp. 1149-1161
ISSN:
0032-0935
Subject:
root primordia,   etc   ; auxins; biosynthesis; cell walls; cellulose; endo-1,4-beta-glucanase; genes; growth and development; plant growth; xylem;     Show all 10 Subjects
Abstract:
... MAIN CONCLUSION: PtrGH9A7, a poplar β-type endo-1,4-β-glucanase gene induced by auxin, promotes both plant growth and lateral root development by enhancing cell expansion. Endo-1,4-β-glucanase (EGase) family genes function in multiple aspects of plant growth and development. Our previous study found that PtrCel9A6, a poplar EGase gene of the β subfamily, is specifically expressed in xylem tissue a ...
DOI:
10.1007/s00425-018-2851-8

14. JMJ30‐mediated demethylation of H3K9me3 drives tissue identity changes to promote callus formation in Arabidopsis

Author:
Lee, Kyounghee; Park, Ok‐Sun; Seo, Pil Joon
Source:
Theplant journal 2018 v.95 no.6 pp. 961-975
ISSN:
0960-7412
Subject:
root primordia,   etc   ; Arabidopsis; auxins; callus; callus formation; catalytic activity; chromatin; demethylation; epigenetics; explants; genes; histones; leaves; loci; methylation; moieties; mutants; somatic cells; tissue culture;     Show all 19 Subjects
Abstract:
... Plant somatic cells can be reprogrammed by in vitro tissue culture methods, and massive genome‐wide chromatin remodeling occurs, particularly during callus formation. Since callus tissue resembles root primordium, conversion of tissue identity is essentially required when leaf explants are used. Consistent with the fact that the differentiation state is defined by chromatin structure, which permit ...
DOI:
10.1111/tpj.14002

15. Efficient protocol for in vitro mass micropropagation of slash pine Plant

Author:
Nunes, Sandra; Sousa, Diana; Pereira, VanessaT.; Correia, Sandra; Marum, Liliana; Santos, Conceição; Dias, MariaC.
Source:
In vitro cellular & developmental biology 2018 v.54 no.2 pp. 175-183
ISSN:
1054-5476
Subject:
root primordia,   etc   ; Pinus elliottii; acclimation; benzyladenine; buds; charcoal; explants; flow cytometry; germination; in vitro studies; indole butyric acid; micropropagation; nutrition; photoperiod; relative humidity; rooting; seedlings; seeds; shoots; temperature;     Show all 20 Subjects
Abstract:
... An efficient protocol was developed for large-scale micropropagation of slash pine (Pinus elliottii Engelm. var. elliottii). For that, explants consisting of shoot apices 1.5–2.0 cm in length from 4 wk-old seedlings were cultured on two different basal media (Murashige & Skoog (MS) and Westvaco WV5 (WV5)). All media were supplemented with 6-benzylaminopurine (BAP), to stimulate the formation of ax ...
DOI:
10.1007/s11627-018-9891-4

16. The Aquilegia JAGGED homolog promotes proliferation of adaxial cell types in both leaves and stems

Author:
Min, Ya; Kramer, Elena M.
Source:
The new phytologist 2017 v.216 no.2 pp. 536-548
ISSN:
0028-646X
Subject:
root primordia,   etc   ; Aquilegia coerulea; cell proliferation; developmental stages; flowers; genes; leaves; models; phenotype; stems;     Show all 10 Subjects
Abstract:
... In order to explore the functional conservation of JAGGED, a key gene involved in the sculpting of lateral organs in several model species, we identified its ortholog AqJAG in the lower eudicot species Aquilegia coerulea. We analyzed the expression patterns of AqJAG in various tissues and developmental stages, and used RNAi‐based methods to generate knockdown phenotypes of AqJAG. AqJAG was strongl ...
DOI:
10.1111/nph.14282

17. 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.)

Author:
Mignolli, F.; Mariotti, L.; Picciarelli, P.; Vidoz, M.L.
Source:
Journal of plant physiology 2017 v.213 pp. 55-65
ISSN:
0176-1617
Subject:
root primordia,   etc   ; Solanum lycopersicum; adventitious roots; genes; hypocotyls; indole acetic acid; mutants; phenotype; seedlings; stems; tomatoes;     Show all 11 Subjects
Abstract:
... 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 hig ...
DOI:
10.1016/j.jplph.2017.02.010

18. Control of Arabidopsis lateral root primordium boundaries by MYB36

Author:
Fernández‐Marcos, María; Desvoyes, Bénédicte; Manzano, Concepción; Liberman, Louisa M.; Benfey, Philip N.; del Pozo, Juan C.; Gutierrez, Crisanto
Source:
The new phytologist 2017 v.213 no.1 pp. 105-112
ISSN:
0028-646X
Subject:
root primordia,   etc   ; Arabidopsis thaliana; branching; cell proliferation; endodermis; genes; hydrogen peroxide; mutants; peroxidase; phenotype;     Show all 10 Subjects
Abstract:
... Root branching in plants relies on the de novo formation of lateral roots. These are initiated from founder cells, triggering new formative divisions that generate lateral root primordia (LRP). The LRP size and shape depends on the balance between positive and negative signals that control cell proliferation. The mechanisms controlling proliferation potential of LRP cells remains poorly understood ...
DOI:
10.1111/nph.14304
PubMed:
27891649
PubMed Central:
PMC5126979

19. Effect of Indole-3-Butyric Acid on Clonal Propagation of Mulberry (Morus alba L.) Stem Cuttings: Rooting and Associated Biochemical Changes

Author:
Husen, Azamal; Iqbal, Muhammad; Siddiqui, Shadab Naseer; Sohrab, Sayed Sartaj; Masresha, Getinet
Source:
Proceedings of the National Academy of Sciences, India, Section B: biological sciences 2017 v.87 no.1 pp. 161-166
ISSN:
0369-8211
Subject:
root primordia,   etc   ; IAA oxidase; Morus alba; biomass; carbohydrate metabolism; indole butyric acid; mulberries; peroxidase; plant cuttings; rooting; stems; sugars; trees;     Show all 13 Subjects
Abstract:
... Fuel wood scarcity in the Himalayan region is an established fact and mulberry (Morus alba L.) tree has a great potential in fuel and energy production. This study determines the role of indole-3-butyric acid (IBA) for rapid clonal propagation of mulberry for higher biomass and large-scale production; and examines the associated biochemical changes during rooting. The non-treated (control) and tre ...
DOI:
10.1007/s40011-015-0597-7

20. Comparative transcriptome reveals circadian and hormonal control of adventitious rooting in mulberry hardwood cuttings

Author:
Cao, Xu; Du, Wei; Shang, Chunqiong; Shen, Qiudi; Liu, Li; Cheng, Jialing
Source:
Acta physiologiae plantarum 2018 v.40 no.11 pp. 197
ISSN:
0137-5881
Subject:
root primordia,   etc   ; adventitious roots; auxins; biosynthesis; cambium; circadian clocks; crops; cutting; cytokinins; ethylene; genes; hardwood cuttings; hormonal regulation; mulberries; rooting; sequence analysis; signal transduction; transcription (genetics); transcriptional activation; transcriptome; woody plants;     Show all 21 Subjects
Abstract:
... Adventitious rooting derived from the parenchyma cells of vascular cambium is a highly efficient rooting type for cutting propagation of woody species. To unravel the molecular mechanisms underlying this distinct rooting process in mulberry stem hardwood cuttings, RNA-seq approach was adopted to perform wide transcriptional expression profiles of three stages characterized by initial excision (sta ...
DOI:
10.1007/s11738-018-2772-y