Auxin Biology: Applications and the Mechanisms Behind

Skůpa, Petr; Opatrný, Z.; Petrášek, Jan

doi:10.1007/978-3-642-41787-0_3

Cited by 16 publications

(13 citation statements)

References 166 publications

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“…Although binding affinities for IAA, NAA and 2,4-D for all known auxin co-receptor combinations are unknown, available biochemical data for TIR1–IAA7 and AFB5–IAA7 show that NAA and 2,4-D have similar binding affinities for each of the co-receptors, which are only half of that of the natural auxin IAA ( Lee et al , 2014 ), implying a generally weaker binding for NAA and 2,4-D than for IAA. However, NAA and 2,4-D often appear to be more effective than IAA in terms of induction of developmental responses ( Skůpa et al , 2014 ; Peterson et al , 2016 ), because both are less metabolized and 2,4-D is also less exported, as discussed above. Another interesting physiological difference between IAA and 2,4-D is that 2,4-D shows the highest activity on promoting cell division in suspension culture-grown tobacco BY-2 cells among the 12 auxinic compounds tested, including IAA, which surprisingly shows no stimulatory effect at all ( Simon et al , 2013 ).…”

Section: Chemical Probes Targeting Auxin Perception Machinerymentioning

confidence: 87%

Auxin signaling: a big question to be addressed by small molecules

Grones

Robert³

2017

Journal of Experimental Botany

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Section: Chemical Probes Targeting Auxin Perception Machinerymentioning

confidence: 87%

Auxin signaling: a big question to be addressed by small molecules

Grones

Robert³

2017

Journal of Experimental Botany

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“…The maximum root number and high rooting frequency was obtained on a ½ MS supplemented with 0.1 μM IBA, that allowed to consider the medium to be the best for in vitro rooting induction. [13], while "Heteroauxin" is the trade name for IAA, which is widely used in in vitro rooting microshoots [14]. The effectiveness of using pulsed treatment with auxin solutions followed by subsequent transfer to soil substrates for various woody plants has been proven many times: for Acer L., Betula L., Malus P. Mill.…”

Section: Resultsmentioning

confidence: 99%

In vitro and ex vitro rooting of Spiraea betulifolia subsp. aemiliana (Rosaceae), an ornamental shrub

Muraseva

Kostikova

2020

BIO Web Conf.

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Two methods of rhizogenesis – in vitro and ex vitro of Spiraea betulifolia subsp. aemiliana (C.K. Schneid.) H. Hara microshoots have been compared. Pulse treatment of microshoots with aqueous solutions of 4% “Heteroauxin” or 2% succinic acid (ex vitro rooting) did not effective -rooting frequency ranged from 3 to 19%. It was established that the in vitro rooting on nutrient media supplemented with auxins was a more effective technique, providing a high percentage of rooted microshoots. The use of half- strength MS medium supplemented with 0.1 μM indolyl-3-butyric acid (rooting frequency 8 8%, root number 3.5 ± 0.3 per plantlet) was found to be the most efective for in vitro rooting. The in vitro rooted regenerated plantlets were successfully acclimatized with 55% of survival rate.

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“…Also, their growth and development processes require PGR, such as auxin and cytokinin, as well as other nutrients contained in the growing media. Auxin and cytokinin work synergistically in stimulating plant growth, hence IAA which is a type of auxin, IAA functions in regulating cell division and stimulating growth to ensure an increase in leaves number (Scarpella et al, 2010;Skupa et al, 2014). Auxin addition affects leaf growth, especially the vascular tissue's length (Aloni, 2010;Zazımalova et al, 2010).…”

Section: Plantlet Formationmentioning

confidence: 99%

Banana Cultivars Microshoot Induction and Plantlet Formation Using Cytokinin and Auxin

Sugiyono

Dewi

Prasetyo

2021

Caraka Tani J. Sustain. Agric.

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Banana is a horticultural plant with very high potentials, which contains carbohydrates and vitamins that are useful in fulfilling people's food and nutritional needs. Hence, this study aims to produce superior banana seedlings and develop a protocol for their mass production using a plant in vitro culture technique. This was a two stage-experiment i.e. microshoot production and plantlet formation. The result showed that Gebyar cultivar produced more shoots than the Kepok Kuning cultivar, with an average of 4.25 microshoots explant-1. However, Kepok Kuning produced more leaves than Gebyar, with an average of 4.64 leaves plantlet-1. Banana shoots cultured on the media containing Indole-3-acetic acid (IAA) at a concentration of 2.5 µM produced the highest leaves number. Meanwhile, those cultured on the media containing 1-Naphthalenesacetic acid (NAA) at a concentration of 7.5 µM produced the highest roots number. A Murashige and Skoog (MS) medium supplemented with 6-Benzylaminopurine (BAP) up to 30 µM and the one supplemented with 7.5 μM of NAA are suitable for Kepok Kuning and Gebyar cultivars micropropagation with regard to microshoot induction and plantlet formation, respectively.

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Auxin Biology: Applications and the Mechanisms Behind

Cited by 16 publications

References 166 publications

Auxin signaling: a big question to be addressed by small molecules

Auxin signaling: a big question to be addressed by small molecules

In vitro and ex vitro rooting of Spiraea betulifolia subsp. aemiliana (Rosaceae), an ornamental shrub

Banana Cultivars Microshoot Induction and Plantlet Formation Using Cytokinin and Auxin

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