Polyamines and Plant Morphogenesis

Kakkar, R. K.; Nagar, P. K.; Ahuja, Paramvir Singh; Rai, V.K.

doi:10.1023/a:1026582308902

Cited by 114 publications

(48 citation statements)

References 122 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is known that exogenous PAs could induce cell division and increase regeneration in plant cell cultures (Kakkar et al 2000). Several studies have shown the importance of exogenous PAs in improving in vitro processes such as SE (Kevers et al 2000;Takeda et al 2002;Silveira et al 2006;Steiner et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of polyamines on in vitro somatic embryogenesis in Momordica charantia L.

Paul

Mitter

Raychaudhuri

2009

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

The effects of exogenous polyamines (PAs) on enhancement of somatic embryogenic calli was investigated in Momordica charantia L. in vitro. Induction of somatic embryogenesis (SE) in leaf explants of M. charantia after 21 days of culture in Murashige and Skoog (MS) medium was determined using scanning electron microscopy. During induction of SE there were high titers of Putrescine (Put) as compared to Spermidine (Spd) and Spermine (Spm), a prerequisite for cell division. Addition of PAs to the embryogenic media resulted in an increase in fresh weights and number of somatic embryos of 21-day old embryogenic calli. Put at a concentration of 1 mM showed maximum increase in fresh weights of embryogenic calli (5 fold) and number of somatic embryos produced per 0.2 g of callus (2.5 fold). Moreover addition of PAs to the embryogenic media resulted in lowering of endogenous free PA level of 21-day old embryogenic calli. Thus, when the media was supplemented with exogenous PAs a positive correlation was found to exist between Somatic Embryogenesis enhancement and decrease in endogenous free PA levels.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of polyamines on in vitro somatic embryogenesis in Momordica charantia L.

Paul

Mitter

Raychaudhuri

2009

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

show abstract

“…Polyamines have been regarded as an interesting class of plant growth regulators and hormonal second-messengers of cell proliferation and differentiation in many processes (Kakkar et al 2000;Bais and Ravishankar 2002;Jiménez 2005). The polyamines spermidine (SPD), spermine (SPM), and their diamine obligate precursor putrescine (PUT) are small aliphatic amines that are ubiquitous in all plant cells (Bouchereau et al 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Polyamines are synthesised from amino acids through decarboxylation. The basic amino acids arginine (ARG) and ornithine (ORN) provide the main part of carbon skeleton to form PUT, by the action of ORN decarboxylase and ARG decarboxylase, whereas methionine units contribute with their propylamine groups to the formation of SPD from PUT and of SPM from SPD (Kakkar et al 2000). Polyamines have been implicated in a range of developmental processes (Gaspar et al 1996;Couée et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Tuber formation and development of Dioscorea cayenensis–Dioscorea rotundata complex in vitro effect of polyamines

Ovono

Kevers

Dommès

2009

In Vitro Cell.Dev.Biol.-Plant

View full text Add to dashboard Cite

Tuberisation was obtained in vitro on yam (Dioscorea cayenensis-Dioscorea rotundata complex). The effect of exogenous polyamines on tuber formation and development (length and weight of microtubers) was investigated and discussed in relation with changes in endogenous polyamines. Application of exogenous polyamines, inhibitors of their metabolism, and polyamines precursors in various concentrations positively affected microtuber formation by yam nodal cuttings and their further development. In control conditions, 3 wk are needed to obtain 100% of tuberisation. With low concentrations of putrescine (10 −5 or 10 −6 M), tuber formation occurred earlier. Polyamine endogenous level and metabolism can be significantly affected by exogenous polyamines, but modifications of endogenous free polyamines could not be directly correlated to the tuber formation process. Increases in endogenous putrescine and auxins were observed in tubers showing a better development in the presence of putrescine. These results can be used for optimising in vitro conditions for mass production of larger microtubers of the D. cayenensis-D. rotundata complex.

show abstract

“…2,3) In plants, they are involved not only in fundamental cellular processes such as growth, differentiation and morphogenesis but also in various environmental stresses. [4][5][6] Walter et al proposed that plant polyamines play an important role in the defense against pathogen attack.…”

mentioning

confidence: 99%

Spermidine, a polyamine, confers resistance to rice blast

et al. 2016

View full text Add to dashboard Cite

Polyamines are involved not only in fundamental cellular processes such as growth, differentiation, and morphogenesis, but also in various environmental stresses. We demonstrated that spermidine, a polyamine, confers resistance to rice blast accompanied by the up-regulation of marker genes for the salicylic acid-mediated signaling pathway PR1b and PBZ1 and of phytoalexin biosynthesis genes CPS4 and NOMT. This is the first report about the involvement of spermidine in rice disease resistance.

show abstract

Polyamines and Plant Morphogenesis

Cited by 114 publications

References 122 publications

Effect of polyamines on in vitro somatic embryogenesis in Momordica charantia L.

Effect of polyamines on in vitro somatic embryogenesis in Momordica charantia L.

Tuber formation and development of Dioscorea cayenensis–Dioscorea rotundata complex in vitro effect of polyamines

Spermidine, a polyamine, confers resistance to rice blast

Contact Info

Product

Resources

About