Plant regeneration from Crotalaria spectabilis hairy roots which showed inhibited growth of root-knot nematodes (Meloidogyne hapla and M. incognita) in vitro

Peanut (Arachis hypogaea) is a crop that can produce resveratrol, a compound with various biological properties, such as those that exert antioxidant, anticancer, and anti-inflammatory effects. In this study, trans-resveratrol was detected in the roots, leaves, and stems of tan and purple seed coat peanuts (Arachis hypogaea) cultivated in a growth chamber. Both cultivars showed higher levels of resveratrol in the roots than the other plant parts. Thus, both cultivars were inoculated with Agrobacterium rhizogenes, in vitro, to promote hairy root development, thereby producing enhanced levels of t-resveratrol. After 1 month of culture, hairy roots from the two cultivars showed higher levels of fresh weight than those of seedling roots. Furthermore, both cultivars contained higher t-resveratrol levels than those of their seedling roots (6.88 ± 0.21 mg/g and 28.07 ± 0.46 mg/g, respectively); however, purple seed coat peanut hairy roots contained higher t-resveratrol levels than those of tan seed coat peanut hairy roots, ranging from 70.16 to 166.76 mg/g and from 46.61 to 54.31 mg/g, respectively. The findings of this study indicate that peanut hairy roots could be a good source for t-resveratrol production due to their rapid growth, high biomass, and substantial amount of resveratrol.

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MTMS-Based Aerogel Constructs for Immobilization of Plant Hairy Roots: Effects on Proliferation of Rindera graeca Biomass and Extracellular Secretion of Naphthoquinones

Journal of Functional Biomaterials ◽

10.3390/jfb12010019 ◽

2021 ◽

Vol 12 (1) ◽

pp. 19

Author(s):

Bartosz Nowak ◽

Mateusz Kawka ◽

Kamil Wierzchowski ◽

Katarzyna Sykłowska-Baranek ◽

Maciej Pilarek

Keyword(s):

Polyurethane Foam ◽

Bioactive Compounds ◽

Hairy Roots ◽

Reference System ◽

Culture System ◽

In Vitro Cultures ◽

Fresh Mass ◽

Extracellular Secretion ◽

High Level

Unique biosynthetic abilities revealed by plants determine in vitro cultures of hairy roots as a suitable source of pharmaceutically relevant bioactive compounds. The basic aim of the study was to examine the applicability of aerogel composed of methyltrimethoxysilane (MTMS) for immobilization of Rindera graeca hairy roots by identifying quantitative effects of biomass proliferation and naphthoquinones extracellular secretion in the aerogel-supported culture system. R. graeca hairy roots were simultaneously cultured for 28-days, as (i) nonimmobilized biomass (reference system), (ii) biomass immobilized on macroporous polyurethane foam (PUF), (iii) biomass with disintegrated MTMS aerogel, (iv) biomass immobilized on polypropylene (PP) fibers (as control), and (v) biomass immobilized on monolithic PP-reinforced MTMS aerogel. MTMS aerogel exhibited high level of biocompatibility toward R. graeca hairy roots which grew into the structure of monolithic aerogel-based constructs. Monolithic MTMS-based constructs significantly promoted the proliferation of hairy roots, resulting in 55% higher fresh mass than the reference system. The highest level of naphthoquinones productivity, i.e., 653 µg gDW−1, was noted for PUF-supported culture system.

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In vitro Propagation of Polygonum hydropiper L. from Shoot Tips

Plant Tissue Culture and Biotechnology ◽

10.3329/ptcb.v20i1.5970 ◽

2010 ◽

Vol 20 (1) ◽

pp. 73-79 ◽

Cited By ~ 2

Author(s):

M. F. Hasan ◽

B. Sikdar

Keyword(s):

Plant Regeneration ◽

In Vitro Propagation ◽

Multiple Shoots ◽

Multiple Shoot ◽

Shoot Tips ◽

Root Induction ◽

Shoot Induction ◽

Multiple Shoot Induction ◽

Polygonum Hydropiper

An efficient protocol for plant regeneration through multiple shoots induction from shoot tips of Polygonum hydropiper (L.) was established. The highest percentage (96.6) of multiple shoot induction and number of shoots (9.0) per culture were found on MS supplemented with 2.0 mg/l Kn. The induced shoots were excised and inoculated on to MS contains different concentrations of IBA or NAA for rooting. The highest percentage (90.0) of root induction and the highest number of roots per shoot (12.0) was found on MS having 1.0 mg/l IBA. Well rooted plantlets were acclimated properly and transplanted in the soil under natural condition, where cent per cent plantlets survived and grew successfully. Key words: Polygonum hydropiper, Shoot tips, In vitro propagation D.O.I. 10.3329/ptcb.v20i1.5970 Plant Tissue Cult. & Biotech. 20(1): 73-79, 2010 (June)

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Seed Germination and in vitro Plant Regeneration through Callus Culture of Two Lychnis Species

Plant Tissue Culture and Biotechnology ◽

10.3329/ptcb.v25i1.24110 ◽

2015 ◽

Vol 25 (1) ◽

pp. 1-12 ◽

Cited By ~ 1

Author(s):

Kee Hwa Bae ◽

Eui Soo Yoon

Keyword(s):

Plant Regeneration ◽

Seed Germination ◽

Callus Induction ◽

In Vitro Propagation ◽

Ornamental Plants ◽

Leaf Explants ◽

Adventitious Shoot ◽

Temperature Treatment ◽

In Vitro Plant Regeneration

Lychnis cognate Maxim and Lychnis fulgens Fish. Ex Spreng are two valued ornamental plants in Korea. Soaking of seeds in GA3 solution remarkably promoted germination up to 60%, but the control (0 mg/l) was not effective (> 5%). To select an adequate temperature for seed germination, seeds, previously soaked in a 1000 mg/l GA3 for 24 hrs, were incubated at 15, 20, 25, and 30°C. Seed germination of over 20% was obtained at 15, 20, and 25°C, but only 10% at 30°C. These results indicate that the seeds of L. cognate and L. fulgens are in a such dormant state that they hardly germinate even by dormancy breaker (GA3) and low (15 ? 25°C) temperature treatment. The highest callus induction was observed in the leaf explants of the seedlings on MS containing specific concentrations of 3.0 mg/l BA and 1.0 mg/l NAA. The adventitious shoot was formed < 90% of calli on 1/2 WPM medium. The height of in vitro propagated plantlet was no different media used for regeneration. This in vitro propagation protocol should be useful for conservation of endangered and ornamental plant.Plant Tissue Cult. & Biotech. 25(1): 1-12, 2015 (June)

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