Effect of abscisic acid on endogenous IAA, auxin protector levels and peroxidase activity during adventitious root initiation in Vigna radiata cuttings

Tartoura, Kamel A. H.

doi:10.1007/s11738-001-0002-4

Cited by 14 publications

(9 citation statements)

References 30 publications

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“…ABA is required for ARF, but high ABA levels inhibit this process [ 26 , 31 ]. Tartoura [ 46 ] applied exogenous ABA to Vigna radiata cuttings during the initiation of ARF and found that the IAA peak was delayed and the length of rooting induction was extended. In our study, the ABA level was always low in the cambium of rejuvenated soft shoots (Fig.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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BackgroundJuglans is a difficult-to-root tree. In the present study, we successfully rejuvenated stock plants by grafting and then burying them horizontally.ResultsRooting 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 root induction. The four types of endohormones were mainly confined to the phloem sieve and companion cells (S&Cs) at the base of either rejuvenated or mature soft shoots. IAA and ABA levels were higher in rejuvenated shoots than in mature shoots, whereas the opposite was true for GA3 and ZR. During rooting induction, GA3 was the first hormone to be observed outside phloem S&Cs, followed by IAA, ABA and ZR. In rejuvenating soft shoots, IAA accumulated in the cross-sectional areas of the cambium and phloem, where root primordia were evident.ConclusionsThe improvement in the rooting ability that was evident after rejuvenation most likely results a transformation of the plant to a juvenile form, from elevated IAA levels in phloem S&Cs and from a promotion of all four endohormones outside phloem S&Cs, in particular, from an accumulation of IAA in the cross-sectional areas of the cambium and phloem.Electronic supplementary materialThe online version of this article (10.1186/s13007-018-0280-0) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

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

et al. 2018

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“…1), which may explain the difference in number of adventitious roots between the two experiments. ABA is also inhibited by fluridone, however, it is unlikely that the increase in rooting is due to reduced ABA because ABA has been shown to promote adventitious rooting in Vigna radiate and Hedera helix 19,20 and has no effect in Arabidopsis (data not shown). These results demonstrate that fluridone could be used to induce adventitious rooting in stem cuttings of pea.…”

Section: Inhibiting Strigolactone Promotes Adventitious Rooting In Peamentioning

confidence: 99%

Inhibition of strigolactones promotes adventitious root formation

Rasmussen

Beveridge

Geelen

2012

Plant Signaling & Behavior

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Roots that form from non-root tissues (adventitious roots) are crucial for cutting propagation in the forestry and horticulture industries. Strigolactone has been demonstrated to be an important regulator of these roots in both Arabidopsis and pea using strigolactone deficient mutants and exogenous hormone applications. Strigolactones are produced from a carotenoid precursor which can be blocked using the widely available but broad terpenoid biosynthesis blocker, fluridone. We demonstrate here that fluridone can be used to promote adventitious rooting in the model species Pisum sativum (pea). In addition, in the garden species Plumbago auriculata and Jasminium polyanthum fluridone was equally as successful at promoting roots as a commercial rooting compound containing NAA and IBA. Our findings demonstrate that inhibition of strigolactone signaling has the potential to be used to improve adventitious rooting in commercially relevant species.Adventitious root formation is the process of root initiation from a non-root tissue and the ability to induce these roots is central to plant industries worldwide. However many plant species do not readily produce adventitious roots and considerably constraining forestry and horticulture industries and limiting the use of this approach in plant conservation. Despite a long history of clonal propagation, we are only recently beginning to understand adventitious root formation at the genetic, molecular and biochemical levels. [1][2][3]

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“…T h e r e is substantial evidence that auxins play a crucial role in adventitious root formation (Caboni et al 1997, Tartoura 2001), but little is known about their specific action and their interactions with other compounds . Several studies describing changes of peroxidase (POX) and polyphenoloxidase (PPO) activities in relation to the rooting process in cuttings were published (Gonzalez et al 1991.…”

Section: Introductionmentioning

confidence: 99%

Endogenous phenolic contents, peroxidase and polyphenoloxidase activities in date palm (Phoenix dactylifera L.) offshoots related to rooting ability

Qaddoury¹,

Amssa²

2003

Acta Physiol Plant

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Offshoots from three cultivars of date pahn showed different rooting ability, in response to the same root inducing treatment (25 mM indole butyric acid), under misting system. Offshoots from Mejhoul rooted easily and produced numerous roots, while those from Khalt rooted poorly and produced fewer roots. No relationship was found between soluble and ionically bound peroxidase and polyphenoloxidase activities and phenolics level, determined spectrophotometrically in the offshoot leaves prior to the auxin application, and the rooting ability of these cultivars. However, changes of these parameters during the first month of culture were correlated with the rooting ability. In the well rooting cultivar, the soluble peroxidase th activi!~ showed a minimum on the 4 day and a maximum on the 10 day, while phenolics level and polyphenoloxidase activity showed an inverse trend. In the poorly rooting cultivar, these parameters changed weakly. List of abbreviations: IBA = indote butyric acid; K H L = Khalt; MJH = Mejhoul; P H E = phenolics; POX = peroxidase; PPO = polyphenyloxidase;

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Effect of abscisic acid on endogenous IAA, auxin protector levels and peroxidase activity during adventitious root initiation in Vigna radiata cuttings

Cited by 14 publications

References 30 publications

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

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

Inhibition of strigolactones promotes adventitious root formation

Endogenous phenolic contents, peroxidase and polyphenoloxidase activities in date palm (Phoenix dactylifera L.) offshoots related to rooting ability

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