scholarly journals Test of Varietal Cold Resistance in Tea Plant by Measuring Cell Permeability of Its Leaf Tissues

1955 ◽  
Vol 23 (4) ◽  
pp. 300-301
Author(s):  
Niro TOMO ◽  
Yasumoto FUCHINOUE ◽  
Hiroho YAMANE
Keyword(s):  
Cold Resistance ◽  
Tea Plant ◽  
Cell Permeability ◽  
Measuring Cell ◽  
Leaf Tissues

scholarly journals Physiological studies on the cold resistance of the tea plant

1954 ◽  
Vol 23 (2) ◽  
pp. 121-127
Author(s):  
Takasi SIMURA ◽  
Akira WATANABE ◽  
Terutaka KANOO
Keyword(s):  
Cold Resistance ◽  
Tea Plant ◽  
Physiological Studies

Evaluation of polyethylene glycol test of measuring cell membrane stability as a drought tolerance test in wheat

1988 ◽  
Vol 110 (3) ◽  
pp. 429-433 ◽  
Author(s):  
G. S. Premachandra ◽  
T. Shimada
Keyword(s):  
Polyethylene Glycol ◽  
Cell Membrane ◽  
Drought Tolerance ◽  
Tolerance Test ◽  
Membrane Stability ◽  
Measuring Cell ◽  
Cell Membrane Stability ◽  
Drought Tolerant ◽  
Leaf Tissues ◽  
Wheat Lines

SummaryEffectiveness of the polyethylene glycol (PEG) test for measuring cell membrane stability (CMS) to select drought-tolerant genotypes in wheat was investigated. PEG test was compared with two other tests. Genetic variability of CMS was also investigated.Drought was induced artificially in pot-grown plants and in excised leaves, and percentage injury in leaf tissues by drought stress as measured by CMS was compared with that by PEG test. Percentage injury in leaf tissues of pot-grown plants was not correlated significantly with that by PEG test. However, percentage injury in excised leaves was well correlated with that in PEG test. The results suggest that the PEG test has merit in measuring drought tolerance in wheat. Frequency distribution of CMS in winter wheat lines was closely related to the characteristic pattern of quantitative inheritance and therefore CMS of wheat seems to be controlled by polygene action.

scholarly journals On the Relation of Hydrophilic Colloiols to Cold Resistance of Tea Plant

1956 ◽  
Vol 25 (2) ◽  
pp. 107-108
Author(s):  
Niro TOMO ◽  
Yasumoto FUCHINOUE ◽  
Hiroho FUCHINOUE
Keyword(s):  
Cold Resistance ◽  
Tea Plant

scholarly journals Genome-wide identification, characterization, and expression analysis of tea plant autophagy-related genes (CsARGs) reveals diverse roles during development and abiotic stress

2020 ◽  
Author(s):  
Wenjun Qian ◽  
Huan Wang ◽  
ZhaoTang Ding ◽  
Mengjie Gou ◽  
Jianhui Hu ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Expression Analysis ◽  
Stress Responses ◽  
Cold Resistance ◽  
Treatment Time ◽  
Resistance Breeding ◽  
Tea Plant ◽  
Specific Expression ◽  
Genome Wide ◽  
Tea Plants

Abstract Background Autophagy, meaning ‘self-eating’, is required for degradation and recycling of cytoplasmic constituents under stressful or non-stressful conditions, thereby contributing to maintaining cellular homeostasis, delaying aged and longevity in eukaryotes. So far, the functions of autophagy have been intensively studied in yeast, mammals and model plants, but few studies have focused on economic crops, especially for tea plants, the roles of autophagy in coping with different environment stimuluses have not yet been detailed. Therefore, exploring the functions of autophagy related genes in tea plant would contribute to further understanding the mechanism of autophagy in response to stresses in woody plants. Results Here, we totally identified 35 CsARGs in tea plant. Each CsARG is highly conserved with its homologues stemmed from other plant species, except for CsATG14. Tissue-specific expression analysis revealed that the abundances of CsARGs were varied with different tissues, but CsATG8c/i showed a certain degree of tissue specificity, respectively. Under hormones and abiotic stress conditions, most of CsARGs were up-regulated at different treatment time points. In addition, the transcriptions of 10 CsARGs were higher in cold-resistance cultivar ‘Longjing43’ than the cold-susceptible cultivar ‘Damianbai’ during CA periods, however, CsATG101 showed a contrary tendency. Conclusions We comprehensively analyzed the bioinformatics and physiological roles of CsARGs in tea plant, and these results provide the basis for deepen exploring the molecular mechanism of autophagy involved in tea plant growth and development and stress responses. Meanwhile, some CsARGs would be served as putative molecular markers for cold-resistance breeding of tea plant in future.

Some Effects of Oxidant Air Pollutants (Ozone and Peroxyacetyl Nitrate) on the Ultrastructure of Leaf Tissues

1972 ◽  
Vol 30 ◽  
pp. 360-361
Author(s):  
William W. Thomson ◽  
Elizabeth S. Swanson
Keyword(s):  
Air Pollutants ◽  
Electron Microscopic Examination ◽  
Peroxyacetyl Nitrate ◽  
Electron Microscopic ◽  
Growth Physiology ◽  
Physiology And Biochemistry ◽  
Entire Plant ◽  
Leaf Tissues ◽  
Gaseous Hydrocarbons ◽  
The Individual

The oxidant air pollutants, ozone and peroxyacetyl nitrate, are produced in the atmosphere through the interaction of light with nitrogen oxides and gaseous hydrocarbons. These oxidants are phytotoxicants and are known to deleteriously affect plant growth, physiology, and biochemistry. In many instances they induce changes which lead to the death of cells, tissues, organs, and frequently the entire plant. The most obvious damage and biochemical changes are generally observed with leaves.Electron microscopic examination of leaves from bean (Phaseolus vulgaris L.) tobacco (Nicotiana tabacum L.) and cotton (Gossipyum hirsutum L.) fumigated for .5 to 2 hours with 0.3 -1 ppm of the individual oxidants revealed that changes in the ultrastructure of the cells occurred in a sequential fashion with time following the fumigation period. Although occasional cells showed severe damage immediately after fumigation, the most obvious change was an enhanced clarity of the cell membranes.

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