scholarly journals Water status signaling in resurrection plants: a possible role for cell wall glycine‐rich proteins

2019 ◽  
Vol 100 (4) ◽  
pp. 659-660
Author(s):  
Lyza Maron
Keyword(s):  
Cell Wall ◽  
Water Status ◽  
Resurrection Plants ◽  
Status Signaling

QTLs for cell wall-bound phenolics in relation to the photosynthetic apparatus activity and leaf water status under drought stress at different growth stages of triticale

2016 ◽  
Vol 292 (2) ◽  
pp. 415-433 ◽  
Author(s):  
Tomasz Hura ◽  
Mirosław Tyrka ◽  
Katarzyna Hura ◽  
Agnieszka Ostrowska ◽  
Kinga Dziurka
Keyword(s):  
Cell Wall ◽  
Drought Stress ◽  
Water Status ◽  
Photosynthetic Apparatus ◽  
Leaf Water ◽  
Growth Stages ◽  
Leaf Water Status ◽  
Bound Phenolics ◽  
Different Growth Stages

CELL-WALL LIGNIN CONTENT RELATED TO TRACHEID DIMENSIONS IN DROUGHT-SENSITIVE AUSTRIAN PINE (PINUS NIGRA)

IAWA Journal ◽  
2001 ◽  
Vol 22 (2) ◽  
pp. 113-120 ◽  
Author(s):  
Wolfgang Gindl
Keyword(s):  
Cell Wall ◽  
Lignin Content ◽  
Water Status ◽  
Pinus Nigra ◽  
Lignin Concentration ◽  
Wall Area ◽  
Pine Tree ◽  
Cell Dimensions ◽  
Highly Correlated ◽  
Annual Distribution

The intra-annual distribution of cell-wall lignin concentration was determined in Austrian pine tree rings and compared with tracheid diameter, lumen width, cell wall thickness and proportion of cell wall area. Lignin concentration was highly correlated with all tracheid dimensions, but only the proportion of cell wall area exhibited a direct statistically significant relationship. Since cell dimensions in Austrian pine are subjected to the indirect and direct influences of the water status of trees, the negative correlation between cellular lignin content and the proportion of cell wall area is attributed to an indirect effect of water stress on lignification in pine tracheids.

High-humidity hot air impingement blanching alters texture, cell-wall polysaccharides, water status and distribution of seedless grape

2018 ◽  
Vol 194 ◽  
pp. 9-17 ◽  
Author(s):  
Jun Wang ◽  
Arun S. Mujumdar ◽  
Li-Zhen Deng ◽  
Zhen-Jiang Gao ◽  
Hong-Wei Xiao ◽  
...  
Keyword(s):  
Cell Wall ◽  
Water Status ◽  
High Humidity ◽  
Cell Wall Polysaccharides ◽  
Hot Air ◽  
Seedless Grape ◽  
Air Impingement

scholarly journals The cell wall-bound phenolics as a biochemical indicator of soil drought resistance in winter triticale  

2013 ◽  
Vol 59 (No. 5) ◽  
pp. 189-195 ◽  
Author(s):  
T. Hura ◽  
K. Hura ◽  
A. Ostrowska ◽  
M. Grzesiak ◽  
K. Dziurka
Keyword(s):  
Cell Wall ◽  
Chlorophyll Fluorescence ◽  
Water Status ◽  
Soil Drought ◽  
Leaf Water Status ◽  
Winter Triticale ◽  
Biochemical Indicator ◽  
Drought Conditions ◽  
Free Phenolics ◽  
Bound Phenolics

The leaf dehydration was accompanied by the highest increase in the content of cell wall-bound phenolics (CPh) during heading (148.3% C; % of control) and in course of drought applied twice during propagation and flowering (130.5% C) of triticale. A statistically significant correlations were obtained only for CPh and parameters of leaf water status and chlorophyll fluorescence. An increase in the content of free phenolics (FPh) under drought conditions was only noticed during the flowering (111.4% C) of plants. Drought application exhibited most spectacular decrease in the ratio of FPh to CPh during propagation (48.5% C) and heading (58.8% C). It was found that the cell wall increases at the expense of free phenolic compounds.

scholarly journals Perspectives on Structural, Physiological, Cellular, and Molecular Responses to Desiccation in Resurrection Plants

Scientifica ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-18 ◽  
Author(s):  
Yathisha Neeragunda Shivaraj ◽  
Plancot Barbara ◽  
Bruno Gugi ◽  
Maïté Vicré-Gibouin ◽  
Azeddine Driouich ◽  
...  
Keyword(s):  
Cell Wall ◽  
Desiccation Tolerance ◽  
Important Change ◽  
Resurrection Plants ◽  
Comprehensive Overview ◽  
Ps Ii ◽  
Antioxidant Enzyme System ◽  
Small Regulatory Rna ◽  
Quantitative Monitoring ◽  
Wall Flexibility

Resurrection plants possess a unique ability to counteract desiccation stress. Desiccation tolerance (DT) is a very complex multigenic and multifactorial process comprising a combination of physiological, morphological, cellular, genomic, transcriptomic, proteomic, and metabolic processes. Modification in the sugar composition of the hemicellulosic fraction of the cell wall is detected during dehydration. An important change is a decrease of glucose in the hemicellulosic fraction during dehydration that can reflect a modification of the xyloglucan structure. The expansins might also be involved in cell wall flexibility during drying and disrupt hydrogen bonds between polymers during rehydration of the cell wall. Cleavages by xyloglucan-modifying enzymes release the tightly bound xyloglucan-cellulose network, thus increasing cell wall flexibility required for cell wall folding upon desiccation. Changes in hydroxyproline-rich glycoproteins (HRGPs) such as arabinogalactan proteins (AGPs) are also observed during desiccation and rehydration processes. It has also been observed that significant alterations in the process of photosynthesis and photosystem (PS) II activity along with changes in the antioxidant enzyme system also increased the cell wall and membrane fluidity resulting in DT. Similarly, recent data show a major role of ABA, LEA proteins, and small regulatory RNA in regulating DT responses. Current progress in “-omic” technologies has enabled quantitative monitoring of the plethora of biological molecules in a high throughput routine, making it possible to compare their levels between desiccation-sensitive and DT species. In this review, we present a comprehensive overview of structural, physiological, cellular, molecular, and global responses involved in desiccation tolerance.

Water relations in Azospirillum-inoculated wheat seedlings under osmotic stress

1998 ◽  
Vol 76 (2) ◽  
pp. 238-244 ◽  
Author(s):  
Cecilia M Creus ◽  
Rolando J Sueldo ◽  
Carlos A Barassi
Keyword(s):  
Cell Wall ◽  
Osmotic Stress ◽  
Water Relations ◽  
Osmotic Potential ◽  
Modulus Of Elasticity ◽  
Growth Promotion ◽  
Water Status ◽  
Water Volume ◽  
Wheat Seedlings ◽  
Water Fraction

Azospirillum has been shown to improve coleoptile growth in seedlings growing in darkness under osmotic stress. However, the changes in water relations that may occur in this experimental system have not yet been studied. Two-centimetre long Triticum aestivum cv. Buck Pucará and Triticum durum cv. Balcarceño-INTA seedlings were inoculated with viable or autoclaved (control) Azospirillum brasilense Sp. 245 bacteria, at approximately 108 cells per seedling. Three days after inoculation, seedlings were exposed to osmotic stress by immersing their roots in 20% polyethylene glycol 6000 for up to 72 h. Germination and seedling growth were at 20°C in darkness. Shoots were excised after 72 h of stress, and water-status parameters were determined through pressure-volume analyses. While osmotic potential at full turgor remained constant, Azospirillum-stimulated growth in Buck Pucará seedlings was accompanied by significant decreases in osmotic potential and relative water content at zero turgor, in volumetric cell wall modulus of elasticity, and in absolute symplastic water volume and by a significant rise in apoplastic water fraction parameters. Except for a constant volumetric cell wall modulus of elasticity, similar results were obtained with Balcarceño-INTA seedlings. However, bacterial growth promotion was evident only in the less tolerant cv. Buck Pucará. Turgor at low water potential was higher in inoculated seedlings in both wheat cultivars under osmotic stress. These results are consistent with a better water status in Azospirillum-inoculated wheat seedlings under water stress, where both effects on cell wall elasticity and (or) apoplastic water are evident.Key words: Azospirillum, drought, seedlings, water status, wheat.

scholarly journals Cell water content and lignification in maize regulated by rhizobacteria under salinity

2017 ◽  
Vol 4 (7) ◽  
pp. 9-18 ◽  
Author(s):  
Yachana Jha
Keyword(s):  
Cell Wall ◽  
Plant Growth ◽  
Water Content ◽  
Growth Promotion ◽  
Lignin Content ◽  
Water Status ◽  
Physiological Mechanism ◽  
Cell Permeability ◽  
Maize Plant ◽  
Cell Water

Inoculation of plant growth promoting rhizobacteria (PGPR) Pseudomonas aeruginosa and Bacillus megaterium in maize plant under salinity stress was analyzed for its growth promotion efficacy and induction of physiological mechanism. In this study effect of these isolates were focused on the cellular level as with lignin deposition, cell wall lignin content and cell water status of maize under salinity. Maize plants get protected from the salinity induced injury by enhancing the plant growth, regulating relative water content, enhancing phenols, flavonoids as well as lignification of cell and antioxidant enzymes also. The study states that, PGPR helps in maize plant under salinity to increase the cell membrane stability, plays a significant action in the directive of cell permeability for the survival of plants. Nevertheless, the cell wall bounded peroxidase and phenylalanine ammonia-lyase (PAL) activity reduced with gradual increase soil in non-inoculated plants. So plants inoculated with selected root-associated bacteria has a positive response on cell content and water status in maize under salinity.

Regulation of flower development in Dendrobium crumenatum by changes in carbohydrate contents, water status and cell wall metabolism

2008 ◽  
Vol 119 (1) ◽  
pp. 59-66 ◽  
Author(s):  
You-Min Yap ◽  
Chiang-Shiong Loh ◽  
Bee-Lian Ong
Keyword(s):  
Cell Wall ◽  
Flower Development ◽  
Water Status ◽  
Cell Wall Metabolism ◽  
Carbohydrate Contents

scholarly journals Rapid Changes in Cell Wall Yielding of Elongating Begonia argenteo-guttata L. Leaves in Response to Changes in Plant Water Status

1992 ◽  
Vol 100 (4) ◽  
pp. 1852-1857 ◽  
Author(s):  
Marcelo D. Serpe ◽  
Mark A. Matthews
Keyword(s):  
Cell Wall ◽  
Water Status ◽  
Plant Water Status ◽  
Plant Water ◽  
Rapid Changes
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