Polyamine catabolism is involved in response to salt stress in soybean hypocotyls

Campestre, María Paula; Bordenave, César Daniel; Origone, Andrea Cecilia; Menéndez, Ana; Ruíz, Oscar Adolfo; Rodríguez, Andrés Alberto; Maiale, Santiago Javier

doi:10.1016/j.jplph.2011.01.007

Cited by 53 publications

(24 citation statements)

References 41 publications

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“…The evaluation of the sensitivity of plants to stress is, quite often, based on data for plant growth (Ahmad et al 2007;Koca et al 2007;Ulfat et al 2007;Zheng et al 2008;Karlidag et al 2009;Campestre et al 2011). Flowers and Hajibagheri (2001) and Qian et al (2004; reported that the maintenance of normal root growth under salinity demonstrates that a plant is tolerant to salt.…”

Section: Discussionmentioning

confidence: 99%

Effect of salt on the growth and metabolism of Glycine max

Queiroz¹,

Sodek

Haddad

2012

Braz. arch. biol. technol.

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Section: Discussionmentioning

confidence: 99%

Effect of salt on the growth and metabolism of Glycine max

Queiroz¹,

Sodek

Haddad

2012

Braz. arch. biol. technol.

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“…have reported that conjugated polyamines show more antioxidant ability than free polyamines. Second, polyamines promote ROS production through polyamine catabolism in the apoplast (Yoda et al, 2006;Marina et al, 2008;Mohapatra et al, 2009;Campestre et al, 2011). While it is difficult to determine which of these mechanisms is most important during salt stress, manipulation of the polyamine biosynthetic pathways is correlated to abiotic stress resistance in several studies.…”

Section: Polyamines: One Of the Prominent Regulators In Ros Homeostasmentioning

confidence: 99%

Polyamines as redox homeostasis regulators during salt stress in plants

Saha

Brauer

Sengupta

et al. 2015

Front. Environ. Sci.

176

105

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The balance between accumulation of stress-induced polyamines and reactive oxygen species (ROS) is arguably a critical factor in plant tolerance to salt stress. Polyamines are compounds, which accumulate in plants under salt stress and help maintain cellular ROS homeostasis. In this review we first outline the role of polyamines in mediating salt stress responses through their modulation of redox homeostasis. The two proposed roles of polyamines in regulating ROS-as antioxidative molecules and source of ROS synthesis-are discussed and exemplified with recent studies. Second, the proposed function of polyamines as modulators of ion transport is discussed in the context of plant salt stress. Finally, we highlight the apparent connection between polyamine accumulation and programmed cell death induction during stress. Thus, polyamines have a complex functional role in regulating cellular signaling and metabolism during stress. By focusing future efforts on how polyamine accumulation and turnover is regulated, research in this area may provide novel targets for developing stress tolerance.

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“…In soybean hypocotyl exposed to NaCl in vitro, Cu-containing amine oxidase (CuAO) activity was up to 77-fold higher than that of polyamine oxidase [25]. Oxidation of PAs (in apoplast) leads to accumulation of GABA through stimulation of CuAO activity under salt stress [21].…”

Section: Digital Signaturementioning

confidence: 99%

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

et al. 2017

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The levels of polyamines (PAs), proline (Pro), and γ-aminobutyric acid (GABA) as well as the activity of diamine oxidase (DAO; EC 1.4.3.6) were studied in the roots of 2-day-old lupine (Lupinus luteus L. 'Juno') seedlings treated with 200 mM NaCl for 24 h. The effect of adding 1 mM aminoguanidine (AG), an inhibitor of DAO activity, was also analyzed. It was found that in roots of lupine seedlings growing under salt stress, a negative correlation between Pro accumulation and putrescine (Put) content takes place. Pro level increased in roots by about 160% and, at the same time, Put content decreased by about 60%, as a result of ca. twofold increase of DAO activity. The AG added to the seedlings almost totally inhibited the activity of DAO, increased Put accumulation to control level, decreased Pro content by about 25%, and reduced GABA level by about 22%. Addition of 50 mM GABA to the lupine seedlings growing in the presence of AG and NaCl restored Pro content in roots to its level in NaCl-treated plants. In this research, the clear correlation between Put degradation and GABA and Pro accumulation was shown for the first time in the roots of seedlings growing under salt stress. This could be considered as a short-term response of a plant to high salt concentration. Our findings indicate that during intensive Pro accumulation in roots induced by salt stress, the pool of this amino acid is indirectly supported by GABA production as a result of Put degradation.

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Polyamine catabolism is involved in response to salt stress in soybean hypocotyls

Cited by 53 publications

References 41 publications

Effect of salt on the growth and metabolism of Glycine max

Effect of salt on the growth and metabolism of Glycine max

Polyamines as redox homeostasis regulators during salt stress in plants

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

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