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1. The localization of NADPH oxidase and reactive oxygen species in in vitro-cultured Mesembryanthemum crystallinum L. hypocotyls discloses their differing roles in rhizogenesis

Author:
Libik-Konieczny, Marta,   et al.   ; Kozieradzka-Kiszkurno, Małgorzata; Desel, Christine; Michalec-Warzecha, Żaneta; Miszalski, Zbigniew; Konieczny, Robert;     Show all 6 Authors
Source:
Protoplasma 2015 v.252 no.2 pp. 477-487
ISSN:
0033-183X
Subject:
cortex; NAD(P)H oxidase (H2O2-forming); Mesembryanthemum crystallinum; cell growth; hypocotyls; hydrogen peroxide; NADP (coenzyme); explants; cultured cells; root primordia; naphthaleneacetic acid; superoxide anion; peroxidase; rhizogenesis
Abstract:
... This work demonstrated how reactive oxygen species (ROS) are involved in the regulation of rhizogenesis from hypocotyls of Mesembryanthemum crystallinum L. cultured on a medium containing 1-naphthaleneacetic acid (NAA). The increase of NADPH oxidase activity was correlated with an increase of hydrogen peroxide (H₂O₂) content and induction of mitotic activity in vascular cylinder cells, leading to ...
DOI:
10.1007/s00709-014-0692-2
PubMed:
25172434
PubMed Central:
PMC4335093

2. Salicylic acid and cysteine contribute to arbutin-induced alleviation of angular leaf spot disease development in cucumber

Author:
Libik-Konieczny, Marta,   et al.   ; Kuźniak, Elżbieta; Wielanek, Marzena; Chwatko, Grażyna; Głowacki, Rafał; Piątek, Milena; Gajewska, Ewa; Skłodowska, Maria;     Show all 8 Authors
Source:
Journal of plant physiology 2015 v.181 pp. 9-13
ISSN:
0176-1617
Subject:
Pseudomonas syringae pv. lachrymans; biosynthesis; cucumbers; cysteine; cysteine synthase; leaf spot; pathogens; salicylic acid; serine O-acetyltransferase; tissues
Abstract:
... Arbutin induced suppression of angular leaf spot disease in cucumber resulting from lower populations of Pseudomonas syringae pv lachrymans in the infected tissues. This study provides insight into mechanisms that may potentially account for this effect. In the absence of the pathogen, exogenous arbutin-induced expression of PR1, the marker of salicylic acid signaling, increased the content of sal ...
DOI:
10.1016/j.jplph.2015.03.017