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1. Sugar availability suppresses the auxin‐induced strigolactone pathway to promote bud outgrowth

Author:
Bertheloot, Jessica; Barbier, François; Boudon, Frédéric; Perez‐Garcia, Maria Dolores; Péron, Thomas; Citerne, Sylvie; Dun, Elizabeth; Beveridge, Christine; Godin, Christophe; Sakr, Soulaiman
Source:
Thenew phytologist 2020 v.225 no.2 pp. 866-879
ISSN:
0028-646X
Subject:
shoot tips,   etc   ; apical dominance; auxins; bioinformatics; branching; buds; cytokinins; dose response; mutants; peas; phenotypic plasticity; strigolactones; sucrose;     Show all 13 Subjects
Abstract:
... Apical dominance occurs when the growing shoot tip inhibits the outgrowth of axillary buds. Apically‐derived auxin in the nodal stem indirectly inhibits bud outgrowth via cytokinins and strigolactones. Recently, sugar deprivation was found to contribute to this phenomenon. Using rose and pea, we investigated whether sugar availability interacts with auxin in bud outgrowth control, and the role of ...
DOI:
10.1111/nph.16201

2. Protocol for vegetative propagation of Trillium govanianum Wall ex D. Don

Author:
Chauhan, Harsh K.; Bisht, Anil K.; Bhatt, Indra D.; Bhatt, Arvind
Source:
Journal of applied research on medicinal and aromatic plants 2020 v.16 pp. 100233
ISSN:
2214-7861
Subject:
shoot tips,   etc   ; Trillium; activated carbon; buds; explants; in vitro regeneration; leaf area; leaves; plantlets; rhizomes; roots; sucrose; tissue culture; vegetative propagation; Himalayan region;     Show all 15 Subjects
Abstract:
... Trillium govanianum Wall ex D. Don (Melanthiaceae) is a perennial rhizomatous herb endemic to the Himalayas. The species has high commercial demand and is threatened in the Indian Himalayas. The potential of T. govanianum for ex situ regeneration (vegetative and in vitro propagation) was investigated. For vegetative propagation, whole rhizomes with incisions at apical portion, and apical, middle a ...
DOI:
10.1016/j.jarmap.2019.100233

3. Developmental indices of cones collected from male plants of Juniperus polycarpos K. Koch under in vitro water deficit and salt stress conditions

Author:
Boogar, Abdolrahman Rahimian; Salehi, Hassan
Source:
South African journal of botany 2020 v.131 pp. 277-282
ISSN:
0254-6299
Subject:
shoot tips,   etc   ; Juniperus; aseptic conditions; culture media; decontamination; dioecy; dry environmental conditions; early development; explants; landscapes; male plants; males; rapid methods; salinity; salt stress; semiarid zones; sexual reproduction; sodium chloride; tissue culture; trees; Iran;     Show all 21 Subjects
Abstract:
... Cones of male plants have vital role in regeneration of plants especially in dioecious species propagated by sexual reproduction. Juniperus polycarpos K. Koch is an evergreen dioecious species with some problems at reproductive stage specially in arid and semi-arid regions. The purpose of this research was to evaluate the effects of water deficit and salinity stress on developmental indices of con ...
DOI:
10.1016/j.sajb.2020.02.032

4. Droplet-vitrification for shoot tip cryopreservation of shallot (Allium cepa var. aggregatum): effects of PVS3 and PVS2 on shoot regrowth

Author:
Wang, Min-Rui; Zhang, Zhibo; Zámečník, Jiří; Bilavčík, Alois; Blystad, Dag-Ragnar; Haugslien, Sissel; Wang, Qiao-Chun
Source:
Plant cell, tissue, and organ culture 2020 v.140 no.1 pp. 185-195
ISSN:
0167-6857
Subject:
shoot tips,   etc   ; Allium cepa var. aggregatum; adventitious buds; aluminum foil; ambient temperature; bulbs; cryopreservation; differential scanning calorimetry; droplets; explants; freezing; genotype; glycerol; histology; leaf primordia; liquid nitrogen; regrowth; shallots; sucrose; vitrification;     Show all 20 Subjects
Abstract:
... The present study described a droplet-vitrification cryopreservation for shoot tips of shallot (Allium cepa var. aggregatum), a small bulb onion. Shoot tips taken from in vitro stock shoots were precultured with 0.3 M and 0.5 M of sucrose, with 1 day for each concentration. Precultured shoot tips were treated with a loading solution containing 2 M glycerol and 0.6 M sucrose for 20 min and then exp ...
DOI:
10.1007/s11240-019-01721-4

5. Cryopreservation of shoot tips of recalcitrant and tropical species: Advances and strategies

Author:
Normah, M.N.; Sulong, Norafarain; Reed, Barbara M.
Source:
Cryobiology 2019 v.87 pp. 1-14
ISSN:
0011-2240
Subject:
shoot tips,   etc   ; cryopreservation; germplasm conservation; new species; recalcitrant seeds; temperature;     Show all 6 Subjects
Abstract:
... There is a pressing need for practical and successful conservation efforts to establish long-term germplasm collections of recalcitrant and tropical species, given the challenge and threat that these plants are facing. Cryopreservation is the only way of conserving some of these species, especially those with temperature or desiccation sensitive (recalcitrant) seeds. This review covers reports on ...
DOI:
10.1016/j.cryobiol.2019.01.008

6. Efficient phloem remobilization of Zn protects apple trees during the early stages of Zn deficiency

Author:
Xie, Ruohan; Zhao, Jianqi; Lu, Lingli; Ge, Jun; Brown, Patrick H.; Wei, Shuai; Wang, Runze; Qiao, Yabei; Webb, Samuel M.; Tian, Shengke
Source:
Plant, cell and environment 2019 v.42 no.12 pp. 3167-3181
ISSN:
0140-7791
Subject:
shoot tips,   etc   ; Malus domestica; apples; fruit crops; fruit trees; leaves; nicotianamine; nutrient deficiencies; phloem; zinc;     Show all 10 Subjects
Abstract:
... Apple trees are extensively cultivated worldwide but are often affected by zinc (Zn) deficiency. Limited knowledge regarding Zn remobilization within fruit crops has hampered the development of efficient strategies for providing adequate amounts of Zn. In the present study, Zn distribution and remobilization were compared among apple trees cultivated under different Zn conditions. Without Zn appli ...
DOI:
10.1111/pce.13621

7. Effects of shoot tip removal, wounding manipulation, and plant growth regulators on shoot regeneration and plantlet development in Paphiopedilum species

Author:
Luan, Vu Quoc; Cuong, Le Kim; Tung, Hoang Thanh; Hien, Vu Thi; Hieu, Tran; Nhut, Duong Tan
Source:
Scientia horticulturae 2019 v.256 pp. 108648
ISSN:
0304-4238
Subject:
shoot tips,   etc   ; Paphiopedilum; Sphagnum; decapitation; greenhouses; liquids; micropropagation; naphthaleneacetic acid; plantlets; survival rate; thidiazuron;     Show all 11 Subjects
Abstract:
... The micropropagation procedure of three endangered Paphiopedilum species (Paphiopedilum callosum, Paphiopedilum gratrixianum, and Paphiopedilum delenatii) by removing shoot apex and wounding method is reported in this study. The results showed that shoot regeneration of P. callosum, P. gratrixianum, and P. delenatii was at high frequency (5.61; 5.48; and 6.00 shoot/explant, respectively) when deca ...
DOI:
10.1016/j.scienta.2019.108648

8. Establishment of hairy root cultures of Rehmannia elata N.E. Brown ex Prain and production of iridoid and phenylethanoid glycosides

Author:
Piątczak, Ewelina; Jeleń, Agnieszka; Makowczyńska, Joanna; Zielińska, Sylwia; Kuźma, Łukasz; Balcerczak, Ewa
Source:
Industrial crops and products 2019 v.137 pp. 308-314
ISSN:
0926-6690
Subject:
shoot tips,   etc   ; Rehmannia; aucubin; biomass; catalpol; genetically modified organisms; leaves; loganin; plant growth substances; roots; verbascoside;     Show all 11 Subjects
Abstract:
... Hairy root lines were established through the infection of Agrobacterium rhizogenes strain (A4) from shoot tips and leaves of Rehmannia elata N. E. Brown ex Prain (Orobanchaceae). Seven lines of hairy roots were selected on the basis of morphology and biomass increase in liquid Woody Plant Medium (WPM) supplemented with sucrose (30 g/L) without growth regulators. The transgenic status of the roots ...
DOI:
10.1016/j.indcrop.2019.05.022

9. Back to the roots: protocol for the photoautotrophic micropropagation of medicinal Cannabis

Author:
Kodym, Andrea; Leeb, Christian J.
Source:
Plant cell, tissue, and organ culture 2019 v.138 no.2 pp. 399-402
ISSN:
0167-6857
Subject:
shoot tips,   etc   ; Cannabis sativa; acclimation; fertilizers; glass; jars; micropropagation; rockwool; rooting; roots; vegetative propagation;     Show all 11 Subjects
Abstract:
... The aim of this protocol was to develop an alternative in vitro propagation system for Cannabis sativa L. by mimicking nursery-based vegetative propagation. Photoautotrophic micropropagation (PAM) was achieved on rockwool blocks as substrate combined with commercially available fertilizer suitable for cannabis cultivation. Stock plants were initiated after sterilisation in forced-ventilated glass ...
DOI:
10.1007/s11240-019-01635-1
PubMed:
31404230
PubMed Central:
PMC6660493

10. Alleviating shoot tip necrosis during in vitro propagation of grape cv. Red Globe

Author:
Surakshitha, N.C.; Soorianathasundaram, K.; Ganga, M.; Raveendran, M.
Source:
Scientia horticulturae 2019 v.248 pp. 118-125
ISSN:
0304-4238
Subject:
shoot tips,   etc   ; boron; breeding; buds; calcium; cultivars; death; drying; fruit crops; grapes; micropropagation; necrosis; rooting;     Show all 13 Subjects
Abstract:
... In vitro propagation plays a key role in mass production and is an important tool in breeding fruit crops. However, the major limiting factor for in vitro propagation of fruit crops is shoot tip necrosis (STN). STN is a physiological disorder characterized by browning, senescence and death of the apical buds which later progress basipetally resulting in complete drying of cultures under in vitro. ...
DOI:
10.1016/j.scienta.2019.01.013

11. Factors Governing Success in Shoot Tip Culture of Bananas with Special Reference to Mixed Genomic Groups: an Overview

Author:
Arun Waman, Ajit; Bohra, Pooja
Source:
Erwerbsobstbau 2019 v.61 no.1 pp. 9-21
ISSN:
0014-0309
Subject:
shoot tips,   etc   ; acclimation; bananas; consumer preferences; environmental factors; genomics; micropropagation; planting;     Show all 8 Subjects
Abstract:
... Micropropagation has proven to be a revolutionary technique for commercial scale quality planting material production in banana. Though a number of varieties with regional preferences are being cultivated in various parts of the world, commercial application of micropropagation is largely limited to the varieties of Cavendish group. This lack of attention to other genomic groups is largely due to ...
DOI:
10.1007/s10341-018-0391-9

12. Field performance of micropropagated and cryopreserved shoot tips-derived pineapple plants grown in the field for 14 months

Author:
Villalobos-Olivera, Ariel; Martínez, Julia; Quintana, Nicolás; Zevallos, Byron E.; Cejas, Inaudis; Lorenzo, José Carlos; González-Olmedo, Justo; Montero, Marcos Edel Martínez
Source:
Acta physiologiae plantarum 2019 v.41 no.3 pp. 34
ISSN:
0137-5881
Subject:
shoot tips,   etc   ; cryopreservation; fruits; germplasm; mature plants; micropropagation; new variety; nitrogen; pineapples; plant growth;     Show all 10 Subjects
Abstract:
... Globally, production of pineapple fruits reached more than 25 million tons in 2013. Therefore, many scientists are searching for new varieties and ways for the conservation of pineapple genetic resources. Cryoconservation in liquid nitrogen has been described as a suitable technology in many plant species. However, its potential effects in the subsequent plant growth in the field should be studied ...
DOI:
10.1007/s11738-019-2825-x

13. LMI1-like and KNOX1 genes coordinately regulate plant leaf development in dicotyledons

Author:
Chang, Lijing; Mei, Gaofu; Hu, Yan; Deng, Jieqiong; Zhang, Tianzhen
Source:
Plant molecular biology 2019 v.99 no.4-5 pp. 449-460
ISSN:
0167-4412
Subject:
shoot tips,   etc   ; Arabidopsis thaliana; cotton; gene silencing; genes; leaf development; leaves; meristems; mutants; okra;     Show all 10 Subjects
Abstract:
... KEY MESSAGE: This report reveals that the LMI1-like and KNOX1 genes coordinately control the leaf development and different combinations of those genes which produce diverse leaf shapes including broad, lobed and compound leaves. Class I KNOTTED1-like homeobox (KNOX1) genes are involved in compound leaf development and are repressed by the ASYMMETRIC LEAVES1 (AS1)–AS2 complex. Cotton plants have a ...
DOI:
10.1007/s11103-019-00829-7

14. Cryopreservation of in vitro shoot tips of chayote (Sechium spp.) by D cryo-plate method

Author:
Valle Arizaga, M.; Sandoval Cancino, G.; Cadena Iniguez, J.; Cruz Gutierrez, E. J.; Gomez Reyes, L. A.; Yamamoto, S.; Tanaka, D.; Olvera Vazquez, S. G.; Watanabe, K.; Niino, T.
Source:
Acta horticulturae 2019 no.1234 pp. 293-300
ISSN:
0567-7572
Subject:
shoot tips,   etc   ; Sechium edule; air drying; cost effectiveness; cryopreservation; glycerol; nitrogen; regrowth; silica gel; sucrose; temperature;     Show all 11 Subjects
Abstract:
... Maintenance of field collections of chayote (Sechium spp.) is cumbersome and costly. An alternative method for safe and cost-effective long-term preservation of chayote is required. An adapted version of the D cryo-plate procedure for long-term preservation of chayote was developed. Variants of the D cryo-plate procedure were optimized for post-liquid nitrogen (LN) regrowth in chayote shoot tips. ...
DOI:
10.17660/ActaHortic.2019.1234.38

15. Micropropogation of Sideritis pisidica Boiss. et Heldr. Apud Bentham

Author:
Sevindik, B.; Tütüncü, M.; İzgü, T.; Tagipur, E. M.; Çürük, P.; Kaynak, G.; Yilmaz, O.; Mendi, Y. Y.
Source:
Acta horticulturae 2019 no.1242 pp. 581-586
ISSN:
0567-7572
Subject:
shoot tips,   etc   ; Sideritis; indole butyric acid; micropropagation; rooting; threatened species; traditional medicine;     Show all 7 Subjects
Abstract:
... Sideritis pisidica Boiss. et Heldr. Apud Bentham is known as a medicinal and aromatic plant. Sideritis pisidica Boiss. et Heldr. Apud Bentham is a plant which is endemic to Turkey and a threatened species in the Labiateae family. This species is used in folk medicine since ancient times. Micropropogation is an alternative method for rapid clonal propogation. In this study, Sideritis pisidica Boiss ...
DOI:
10.17660/ActaHortic.2019.1242.85

16. Combined pre-treatments enhance antioxidant metabolism and improve survival of cryopreserved kiwifruit shoot tips

Author:
Mathew, Liya; Burritt, David J.; McLachlan, Andrew; Pathirana, Ranjith
Source:
Plant cell, tissue, and organ culture 2019 v.138 no.1 pp. 193-205
ISSN:
0167-6857
Subject:
shoot tips,   etc   ; Actinidia chinensis; cold; cryopreservation; droplets; kiwifruit; lipid peroxides; metabolism; oxidative stress; plant tissues; plantlets; protective effect; sucrose; vitrification;     Show all 14 Subjects
Abstract:
... The number of species conserved by cryopreservation is increasing thanks to the development of robust vitrification-based protocols. Managing oxidative stress is critical for the successful application of cryopreservation to plant tissues. This research was aimed at understanding the protective effect of pre-treatment of stock plantlets with cold, and their shoot tips with sucrose and an antioxida ...
DOI:
10.1007/s11240-019-01617-3

17. LncRNA/circRNA–miRNA–mRNA networks regulate the development of root and shoot meristems of Populus

Author:
Liu, Sian; Wu, Ling; Qi, Haoran; Xu, Meng
Source:
Industrial crops and products 2019 v.133 pp. 333-347
ISSN:
0926-6690
Subject:
shoot tips,   etc   ; Populus; binding sites; circular RNA; gene expression regulation; messenger RNA; microRNA; non-coding RNA; root tips; shoot meristems;     Show all 10 Subjects
Abstract:
... Root and shoot meristems play essential roles in the formation and development of plant tissues and organs. However, little is known about the roles of non-coding RNAs (ncRNAs) in the regulation of maintenance and differentiation of root and shoot meristems in Populus. Here, we first identified and characterized many microRNAs (miRNAs), mRNAs, long ncRNAs (lncRNAs) and circular RNAs (circRNAs) fro ...
DOI:
10.1016/j.indcrop.2019.03.048

18. Micropropagation of hop (Humulus lupulus L.) via shoot tip and node culture

Author:
Mafakheri, M.; Hamidoghli, Y.
Source:
Acta horticulturae 2019 no.1236 pp. 31-36
ISSN:
0567-7572
Subject:
shoot tips,   etc   ; Humulus lupulus; disinfection; explants; forests; germplasm; habitats; indole acetic acid; medicinal plants; micropropagation; plantlets; rooting; rootstocks; villages; Iran;     Show all 15 Subjects
Abstract:
... Humulus lupulus is a valuable medicinal plant that grows wild in forest areas of northern Iran. In recent decades with extension of village boundaries toward forest, hop habitat is suffering destruction. Optimization of hop micropropagation by shoot tip and nodal segments was conducted towards conservation of Iranian hop germplasm. Nodal segments were provided from the rootstock and after disinfec ...
DOI:
10.17660/ActaHortic.2019.1236.5

19. Orthogonal test design for optimization of the cryopreservation of Chinese cherry (Prunus pseudocerasus L.) shoot tips by vitrification

Author:
Zhu, D. -Z.; Chen, X.; Wang, J. W.; Xu, L.; Wei, H. -R.; Tan, Y.; Zhang, L. S.; Liu, Q. -Z.
Source:
Acta horticulturae 2019 no.1234 pp. 149-156
ISSN:
0567-7572
Subject:
shoot tips,   etc   ; Prunus pseudocerasus; cherries; cold; cryopreservation; nitrogen; plantlets; regrowth; storage time; sucrose; survival rate; thawing; vitrification;     Show all 13 Subjects
Abstract:
... To optimize the protocols of the conservation for Chinese cherry (Prunus pseudocerasus Lindl.), in vitro-grown shoot tips of 'Taishanganying' were used as the material and an orthogonal test and single factor test were designed. The result showed that the optimal step of vitrification cryopreservation was: 50 days in vitro plantlets were cold hardened at 4°C for 3 weeks. The shoot tips were peeled ...
DOI:
10.17660/ActaHortic.2019.1234.20

20. Cryopreserved potato shoot tips showed genotype-specific response to sucrose concentration in rewarming solution (RS)

Author:
Vollmer, Rainer; Villagaray, Rosalva; Castro, Mario; Anglin, Noelle L.; Ellis, David
Source:
Plant cell, tissue, and organ culture 2019 v.136 no.2 pp. 353-363
ISSN:
0167-6857
Subject:
shoot tips,   etc   ; cryopreservation; cryoprotectants; crystallization; crystals; genotype; germplasm conservation; ice; landraces; nitrogen; potatoes; regrowth; rehydration; solutes; sucrose; vitrification;     Show all 16 Subjects
Abstract:
... Cryopreservation protocols have been successfully developed for hundreds of species and thousands of genotypes in laboratories around the world. In many of the protocols, the rewarming process occurs in a rewarming solution (RS) with a high concentration of sucrose (0.8–1.2 M). Warming rate and associated conditions influence cell rehydration, loss of accumulated solutes (e.g. cryoprotectants) and ...
DOI:
10.1007/s11240-018-1520-8