Influence of vesicular trichomes of Atriplex nummularia on photosynthesis, osmotic adjustment, cell wall elasticity and enzymatic activity

2020 ◽  
Vol 155 ◽  
pp. 177-186
Author(s):  
Martha Katharinne Silva Souza Paulino ◽  
Edivan Rodrigues de Souza ◽  
Cíntia Maria Teixeira Lins ◽  
Pablo Rugero Magalhães Dourado ◽  
Lucas Yago de Carvalho Leal ◽  
...  
Keyword(s):  
Cell Wall ◽  
Enzymatic Activity ◽  
Osmotic Adjustment ◽  
Cell Wall Elasticity ◽  
Atriplex Nummularia

scholarly journals Growth and Physiological Traits Associated with Drought Survival and Post-drought Recovery in Perennial Turfgrass Species

2010 ◽  
Vol 135 (2) ◽  
pp. 125-133 ◽  
Author(s):  
Qi Chai ◽  
Fang Jin ◽  
Emily Merewitz ◽  
Bingru Huang
Keyword(s):  
Cell Wall ◽  
Drought Stress ◽  
Osmotic Adjustment ◽  
Perennial Grass ◽  
Kentucky Bluegrass ◽  
Physiological Traits ◽  
Grass Species ◽  
Cell Wall Elasticity ◽  
Drought Recovery ◽  
Drought Survival

The objective of this study was to determine physiological traits for drought survival and post-drought recovery upon re-watering in two C3 perennial grass species, kentucky bluegrass [KBG (Poa pratensis)] and perennial ryegrass [PRG (Lolium perenne)]. Plants were maintained well watered or exposed to drought stress by withholding irrigation and were then re-watered in a growth chamber. KBG had significantly higher grass quality and leaf photochemical efficiency, and lower electrolyte leakage than PRG during 20 days of drought. After 7 days of re-watering, drought-damaged leaves were rehydrated to the control level in KBG, but could not fully recover in PRG. KBG produced a greater number of new roots, while PRG had more rapid elongation of new roots after 16 days of re-watering. Superior drought tolerance in KBG was associated with osmotic adjustment, higher cell wall elasticity, and lower relative water content at zero turgor. Osmotic adjustment, cell wall elasticity, and cell membrane stability could play important roles in leaf desiccation tolerance and drought survival in perennial grass species. In addition, post-drought recovery of leaf hydration level and physiological activity could be associated with the accumulation of carbohydrates in leaves and rhizomes during drought stress and new root production after re-watering.

Impact of drought on growth, photosynthesis, osmotic adjustment, and cell wall elasticity in Damask rose

2020 ◽  
Vol 150 ◽  
pp. 133-139 ◽  
Author(s):  
Hatim Al-Yasi ◽  
Houneida Attia ◽  
Khalid Alamer ◽  
Fahmy Hassan ◽  
Esmat Ali ◽  
...  
Keyword(s):  
Cell Wall ◽  
Osmotic Adjustment ◽  
Cell Wall Elasticity ◽  
Damask Rose

Effect of water stress on growth, osmotic adjustment, cell wall elasticity and water-use efficiency in Spartina alterniflora

2009 ◽  
Vol 67 (2) ◽  
pp. 312-319 ◽  
Author(s):  
Kamel Hessini ◽  
Juan Pablo Martínez ◽  
Mhemmed Gandour ◽  
Ali Albouchi ◽  
Abdelaziz Soltani ◽  
...  
Keyword(s):  
Cell Wall ◽  
Water Stress ◽  
Water Use Efficiency ◽  
Spartina Alterniflora ◽  
Water Use ◽  
Osmotic Adjustment ◽  
Cell Wall Elasticity ◽  
Effect Of Water ◽  
Use Efficiency

Atomic force microscopy based analysis of cell-wall elasticity in macroalgae

2018 ◽  
pp. 335-347 ◽  
Author(s):  
Thomas Torode ◽  
Marina Linardic ◽  
J. Louis Kaplan ◽  
Siobhan A. Braybrook
Keyword(s):  
Atomic Force Microscopy ◽  
Cell Wall ◽  
Force Microscopy ◽  
Cell Wall Elasticity ◽  
Atomic Force

Cell wall elasticity and Water Index (R970 nm/R900 nm) in wheat under different nitrogen availabilities

1996 ◽  
Vol 17 (2) ◽  
pp. 373-382 ◽  
Author(s):  
J. PENUELAS ◽  
I. FILELLA ◽  
L. SERRANO ◽  
R. SAVÉ
Keyword(s):  
Cell Wall ◽  
Water Index ◽  
Cell Wall Elasticity

scholarly journals Cell wall localization of the aspartic proteinase from buckwheat (FeAPL1) over-expressed in tobacco BY-2 cells

2011 ◽  
Vol 76 (9) ◽  
pp. 1229-1236 ◽  
Author(s):  
Mira Milisavljevic ◽  
Gordana Timotijevic ◽  
Dragana Nikolic ◽  
Jelena Samardzic ◽  
Vesna Maksimovic
Keyword(s):  
Cell Wall ◽  
Enzymatic Activity ◽  
Cell Line ◽  
Blot Analysis ◽  
Aspartic Proteinase ◽  
Potential Functions ◽  
Protein Gel ◽  
Pepstatin A

The recombinant aspartic proteinase-like protein (FeAPL1-His6) was overexpressed in the tobacco BY-2 cell line and the expected pepstatin A-sensitive enzymatic activity was confirmed at pH 3.0. Immunocytochemistry and protein gel blot analysis of the transformed BY-2 cells and their protoplasts showed extracellular localization of rFeAPL1-His6 in the cell wall. Based on the obtained results, potential functions of FeAPL1 are discussed.

scholarly journals Differentiation of propeptide residues regulating the compartmentalization, maturation and activity of the broad-range phospholipase C of Listeria monocytogenes

2010 ◽  
Vol 432 (3) ◽  
pp. 557-566 ◽  
Author(s):  
Emily R. Slepkov ◽  
Alan Pavinski Bitar ◽  
Hélène Marquis
Keyword(s):  
Cell Wall ◽  
Listeria Monocytogenes ◽  
Amino Acid ◽  
Enzymatic Activity ◽  
Phospholipase C ◽  
Bacterial Pathogen ◽  
Amino Acid Residues ◽  
C Terminus ◽  
N Terminus ◽  
Vacuolar Acidification

The intracellular bacterial pathogen Listeria monocytogenes secretes a broad-range phospholipase C enzyme called PC-PLC (phosphatidylcholine phospholipase C) whose compartmentalization and enzymatic activity is regulated by a 24-amino-acid propeptide (Cys28–Ser51). During intracytosolic multiplication, bacteria accumulate the proform of PC-PLC at their membrane–cell-wall interface, whereas during cell-to-cell spread vacuolar acidification leads to maturation and rapid translocation of PC-PLC across the cell wall in a manner that is dependent on Mpl, the metalloprotease of Listeria. In the present study, we generated a series of propeptide mutants to determine the minimal requirement to prevent PC-PLC enzymatic activity and to identify residues regulating compartmentalization and maturation. We found that a single residue at position P1 (Ser51) of the cleavage site is sufficient to prevent enzymatic activity, which is consistent with P1′ (Trp52) being located within the active-site pocket. We observed that mutants with deletions at the N-terminus, but not the C-terminus, of the propeptide are translocated across the cell wall more effectively than wild-type PC-PLC at a physiological pH, and that individual amino acid residues within the N-terminus influence Mpl-mediated maturation of PC-PLC at acidic pH. However, deletion of more than 75% of the propeptide was required to completely prevent Mpl-mediated maturation of PC-PLC. These results indicate that the N-terminus of the propeptide regulates PC-PLC compartmentalization and that specific residues within the N-terminus influence the ability of Mpl to mediate PC-PLC maturation, although a six-residue propeptide is sufficient for Mpl to mediate PC-PLC maturation.

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