Salt stress responses in Populus cathayana Rehder

Yang, Fan; Xiao, Xiudi; Zhang, Sheng; Korpelainen, Helena; Li, Chunyang

doi:10.1016/j.plantsci.2009.02.008

Cited by 82 publications

(51 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SA was measured according to the protocol of Langlois-Meurinne et al (2005). Thiobarbituric acid-reactive substances were assayed and calculated as described by Yang et al (2009). In situ visualization of ROS was performed using dichlorodihydrofluorescein-diacetate (DCFH 2 -DA) by a protocol modified from Oracz et al (2009).…”

Section: Quantitative Rt-pcr Analysismentioning

confidence: 99%

Arabidopsis GLUTATHIONE REDUCTASE1 Plays a Crucial Role in Leaf Responses to Intracellular Hydrogen Peroxide and in Ensuring Appropriate Gene Expression through Both Salicylic Acid and Jasmonic Acid Signaling Pathways

et al. 2010

View full text Add to dashboard Cite

Glutathione is a major cellular thiol that is maintained in the reduced state by glutathione reductase (GR), which is encoded by two genes in Arabidopsis (Arabidopsis thaliana; GR1 and GR2). This study addressed the role of GR1 in hydrogen peroxide (H 2 O 2 ) responses through a combined genetic, transcriptomic, and redox profiling approach. To identify the potential role of changes in glutathione status in H 2 O 2 signaling, gr1 mutants, which show a constitutive increase in oxidized glutathione (GSSG), were compared with a catalase-deficient background (cat2), in which GSSG accumulation is conditionally driven by H 2 O 2 . Parallel transcriptomics analysis of gr1 and cat2 identified overlapping gene expression profiles that in both lines were dependent on growth daylength. Overlapping genes included phytohormone-associated genes, in particular implicating glutathione oxidation state in the regulation of jasmonic acid signaling. Direct analysis of H 2 O 2 -glutathione interactions in cat2 gr1 double mutants established that GR1-dependent glutathione status is required for multiple responses to increased H 2 O 2 availability, including limitation of lesion formation, accumulation of salicylic acid, induction of pathogenesis-related genes, and signaling through jasmonic acid pathways. Modulation of these responses in cat2 gr1 was linked to dramatic GSSG accumulation and modified expression of specific glutaredoxins and glutathione S-transferases, but there is little or no evidence of generalized oxidative stress or changes in thioredoxin-associated gene expression. We conclude that GR1 plays a crucial role in daylength-dependent redox signaling and that this function cannot be replaced by the second Arabidopsis GR gene or by thiol systems such as the thioredoxin system.

show abstract

Section: Quantitative Rt-pcr Analysismentioning

confidence: 99%

Arabidopsis GLUTATHIONE REDUCTASE1 Plays a Crucial Role in Leaf Responses to Intracellular Hydrogen Peroxide and in Ensuring Appropriate Gene Expression through Both Salicylic Acid and Jasmonic Acid Signaling Pathways

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The occurrence and performance of P. cathayana are affected by increased areas of saline soil (Yang et al 2009). Meanwhile, soil salinization and alkalization frequently co-occur in nature.…”

Section: ---mentioning

confidence: 99%

Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings

Huang

Zhang

et al. 2013

Photosynt.

View full text Add to dashboard Cite

Cuttings of Populus cathayana were exposed to three different alkaline regimes (0, 75, and 150 mM Na 2 CO 3 ) in a semicontrolled environment. The net photosynthesis rate (P N ), mesophyll conductance (g m ), the relative limitations posed by stomatal conductance (L s ) and by mesophyll conductance (L m ), photosynthetic nitrogen-use efficiency (PNUE), carbon isotope composition (δ 13 C), as well as specific leaf area (SLA) were measured. P N decreased due to alkaline stress by an average of 25% and g m decreased by an average of 57%. Alkaline stress caused an increase of L m but not L s , with average L s of 26%, and L m average of 38% under stress conditions. Our results suggested reduced assimilation rate under alkaline stress through decreased mesophyll conductance in P. cathayana. Moreover, alkaline stress increased significantly δ 13 C and it drew down CO 2 concentration from the substomatal cavities to the sites of carboxylation (C i -C c ), but decreased PNUE. Furthermore, a relationship was found between PNUE and C i -C c . Meanwhile, no correlation was found between δ 13 C and C i /C a , but a strong correlation was proved between δ 13 C and C c /C a , indicating that mesophyll conductance was also influencing the 13 C/ 12 C ratio of leaf under alkaline stress.

show abstract

“…Weimberg (1975), Munjal and Goswami (1995), Soussi et al (1998), Jenifer and Franklin-Janus (2002) and Xu et al (2008) reported that salinity caused a decrease in chlorophyll and carotenoids level in other plants. Decrease in chlorophylls level under salt stress may be due to reduction in pigment biosynthesis or enzymatic chlorophyll degradation (Xu et al, 2008 andYang et al, 2009). The loss of chlorophyll under salt stress could be related to photoinhibition or reactive oxygen species formation.…”

Section: Resultsmentioning

confidence: 99%

Effect of Nacl and Phenylalanine on the Production of some Secondary Metabolites in In Vitro Cultures of Mentha longifolia

2017

Alexandria Science Exchange Journal: An International Quarterly

View full text Add to dashboard Cite

The present study was conducted at the Tissue Culture and Plant Micropropagation Laboratory of Floriculture, Ornamental Horticulture and Landscape Gardening Department, Faculty of Agriculture, Alexandria University, during 2014 and 2015, to study the effect of five different concentrations of phenylalanine (0, 0.5, 5, 10, and 15 mg/l) and four different concentrations of sodium chloride (0, 2000, 4000 and 6000 mg/l) on the production of some secondary metabolites in in vitro cultures of Mentha longifolia using shoot tips and leaves.Leaf segments about 1 cm 2 and shoot tips consisting of 3-4 cm long stem segments containing three auxiliary buds (as explants) were planted on MS medium supplemented with NAA (0.25 mg/l) + BAP(2.5 mg/l ) + 30 g/liter sucrose + 7 g/liter agar for shoot regeneration from shoot tips, while MS medium contained 2,4-D (4 mg/l) + BAP (0.5 mg/l ) for callus induction from leaf segments, the pH was adjusted to 5.8±0.02. Plantlets were subjected to 16 hours light and 8 hours darkness (2000-2500 lux for 16 h/d provided by fluorescent tubes), the temperature was adjusted at 25º C ± 2 and 60-70% humidity. The cultures were incubated for 60 days in case of shoot tips and 100 days in case of leaves for callus induction. Chemical analysis was performed on callus tissues after 60 and 100 days from planting and shoot tissues after 60 days from planting which were produced under salinity levels, phenylalanine levels and their interaction to determine the contents of total chlorophyll, total phenolic, rosmarinic acid and proline in both tissues.From the obtained results in this study, using shoot tips for the production of phenolic acid and rosmarinic acid was superior than the callus. Low concentration of sodium chloride (2000 mg /l) enhanced the production of some secondary metabolites. However high concentrations of sodium chloride (6000 mg /l) leads to slow growth, yellowing of cells and sometimes the deterioration of plants. Uses of intermediate concentrations of phenylalanine (5 and 10 mg /l) enhanced the production of chlorophyll and some secondary metabolites where as high concentration (15 mg /l) does not stop growth and cell division.

show abstract

Salt stress responses in Populus cathayana Rehder

Cited by 82 publications

References 59 publications

Arabidopsis GLUTATHIONE REDUCTASE1 Plays a Crucial Role in Leaf Responses to Intracellular Hydrogen Peroxide and in Ensuring Appropriate Gene Expression through Both Salicylic Acid and Jasmonic Acid Signaling Pathways

Arabidopsis GLUTATHIONE REDUCTASE1 Plays a Crucial Role in Leaf Responses to Intracellular Hydrogen Peroxide and in Ensuring Appropriate Gene Expression through Both Salicylic Acid and Jasmonic Acid Signaling Pathways

Significance of mesophyll conductance for photosynthetic capacity and water-use efficiency in response to alkaline stress in Populus cathayana seedlings

Effect of Nacl and Phenylalanine on the Production of some Secondary Metabolites in In Vitro Cultures of Mentha longifolia

Contact Info

Product

Resources

About