scholarly journals Effect of heat stress on the MDA, proline and soluble sugar content in leaf lettuce seedlings

2013 ◽  
Vol 04 (05) ◽  
pp. 112-115 ◽  
Author(s):  
Yingyan Han ◽  
Shuangxi Fan ◽  
Qiao Zhang ◽  
Yanan Wang
Keyword(s):  
Heat Stress ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugar Content ◽  
Leaf Lettuce

scholarly journals WHIRLY1 Regulates HSP21.5A Expression to Promote Thermotolerance in Tomato

2019 ◽  
Vol 61 (1) ◽  
pp. 169-177 ◽  
Author(s):  
Kunyang Zhuang ◽  
Yangyang Gao ◽  
Zhuangbin Liu ◽  
Pengfei Diao ◽  
Na Sui ◽  
...  
Keyword(s):  
Heat Stress ◽  
Heat Shock ◽  
Crop Yields ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Membrane Stability ◽  
Heat Shock Factors ◽  
Soluble Sugar Content ◽  
Ros Accumulation ◽  
Elicitor Response

Abstract Heat stress poses a major threat to plant productivity and crop yields. The induction of heat shock proteins (HSPs) by heat shock factors is a principal defense response of plants exposed to heat stress. In this study, we identified and analyzed the heat stress-induced Whirly1 (SlWHY1) gene in tomato (Solanum lycopersicum). We generated various SlWHY1-overexpressing (OE) and SlWHY1-RNA interference (RNAi) lines to investigate the role of WHIRLY1 in thermotolerance. Compared with the wild type (WT), the OE lines showed less wilting, as reflected by their increased membrane stability and soluble sugar content and reduced reactive oxygen species (ROS) accumulation under heat stress. By contrast, RNAi lines with inhibited SlWHY1 expression showed the opposite phenotype and corresponding physiological indices under heat stress. The heat-induced gene SlHSP21.5A, encoding an endoplasmic reticulum-localized HSP, was upregulated in the OE lines and downregulated in the RNAi lines compared with the WT. RNAi-mediated inhibition of SlHSP21.5A expression also resulted in reduced membrane stability and soluble sugar content and increased ROS accumulation under heat stress compared with the WT. SlWHY1 binds to the elicitor response element-like element in the promoter of SlHSP21.5A to activate its transcription. These findings suggest that SlWHY1 promotes thermotolerance in tomato by regulating SlHSP21.5A expression.

The Influence of Chlorophenoxy Herbicides MCPA on Creeping Bentgrass Physiological Index

2011 ◽  
Vol 356-360 ◽  
pp. 2763-2766 ◽  
Author(s):  
Yang Fan Gao ◽  
Ming Wang Shi ◽  
Jian Hua Wang
Keyword(s):  
Chlorophyll Content ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Creeping Bentgrass ◽  
Physiological Index ◽  
Soluble Sugar Content ◽  
Content Determination ◽  
Chlorophenoxy Herbicides ◽  
Test Result

In this article, we studied to different concentrations of MCPA to creeping bentgrass Growth. Through the creeping bentgrass in four different periods of chlorophyll content, MDA and soluble sugar content determination. This test result showed:With the MCPA concentration increases, creeping bentgrass decline of chlorophyll content in the same period of growth, MDA and soluble sugar content increased. MCPA used after the early pair of creeping bentgrass growth is large, to put off with MCPA handle time, to affect to creeping bentgrass growth is gradually decreased.

scholarly journals A Long-Day Photoperiod and 6-Benzyladenine Promote Runner Formation through Upregulation of Soluble Sugar Content in Strawberry

2020 ◽  
Vol 21 (14) ◽  
pp. 4917
Author(s):  
Yali Li ◽  
Jiangtao Hu ◽  
Hao Wei ◽  
Byoung Ryong Jeong
Keyword(s):  
Molecular Mechanisms ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Orthogonal Test ◽  
Influential Factor ◽  
Asexual Propagation ◽  
Soluble Sugar Content ◽  
Long Day ◽  
Seed Propagation ◽  
Dimensional Electrophoresis

Commercial strawberries are mainly propagated using daughter plants produced on aerial runners because asexual propagation is faster than seed propagation, and daughter plants retain the characteristics of the mother plant. This study was conducted to investigate the effective factors for runner induction, as well as the molecular mechanisms behind the runner induction. An orthogonal test with 4 factors (photoperiod, temperature, gibberellin, and 6-benzyladenine), each with 3 levels was performed. Proteins were also extracted from the crowns with or without runners and separated by two-dimensional electrophoresis. The results of the orthogonal test showed that a long-day (LD) environment was the most influential factor for the runner formation, and 50 mg·L−1 of 6-BA significantly increased the number of runners. A proteomic analysis revealed that 32 proteins were differentially expressed (2-fold, p < 0.05) in the strawberry crowns with and without runners. A total of 16 spots were up-regulated in the crowns with runners induced by LD treatment. Identified proteins were classified into seven groups according to their biological roles. The most prominent groups were carbohydrate metabolism and photosynthesis, which indicated that the carbohydrate content may increase during runner formation. A further analysis demonstrated that the soluble sugar content was positively correlated with the number of runners. Thus, it is suggested that the photoperiod and 6-BA break the dormancy of the axillary buds and produce runners by increasing the soluble sugar content in strawberry.

scholarly journals Effects of Biochar on Soluble Sugar Content in Peach Seedlings

2019 ◽  
Vol 136 ◽  
pp. 07010
Author(s):  
Jing Sun ◽  
Zhiyu Li ◽  
Jinpeng Zhu ◽  
Yuxi Wang ◽  
Tonghao Cui ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Plant Height ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Stem Diameter ◽  
Corn Straw ◽  
Paddy Straw ◽  
Soluble Sugar Content ◽  
Rape Straw ◽  
Significant Difference

A pot experiment was conducted to study the effects of different biochar types [addition of rape straw biochar (RB), addition of paddy straw biochar (PB), addition of wheat straw biochar (WB) and addition of corn straw biochar (MB)] on the soluble sugar content and plant height of peach seedlings. The result showed that the soluble sugar content in roots and leaves of peach seedlings treated with biochar was lower than the control. However, the soluble sugar content in stems was higher than control compared with the control. In the soluble sugar content in the aboveground part, there was no significant difference between the treatment of adding biochar and the control except for the treatment of PB. All the treatment of adding biochar increased the plant height of peach seedlings except the treatment of MB than the control and the treatment of RB and PB were at a higher level. Compared to control, all biochar addition treatments increased stem diameter of peach seedlings and the treatment of RB and PB were at a higher level. Therefore, the treatment of RB and PB was beneficial to the growth of peach seedlings.

Genetic characteristics and QTL analysis of the soluble sugar content in ripe tomato fruits

2021 ◽  
Vol 276 ◽  
pp. 109785
Author(s):  
Yao Tang ◽  
Jing Ren ◽  
Chunxin Liu ◽  
Jingbin Jiang ◽  
Huanhuan Yang ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Tomato Fruits ◽  
Genetic Characteristics ◽  
Soluble Sugar Content ◽  
Ripe Tomato

Source - sink manipulation to increase melon (Cucumis melo L.) fruit biomass and soluble sugar content

2004 ◽  
Vol 55 (12) ◽  
pp. 1241 ◽  
Author(s):  
Robert L. Long ◽  
Kerry B. Walsh ◽  
Gordon Rogers ◽  
David J. Midmore
Keyword(s):  
Fruit Development ◽  
Cucumis Melo ◽  
Harvest Index ◽  
Fruit Set ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Soluble Sugar Content ◽  
Source Sink ◽  
Cucumis Melo L ◽  
Treatment Application

Various source–sink perturbations were employed to alter partitioning to orange flesh melon (Cucumis melo L. reticulatus group) and thus to influence fruit biomass and soluble sugar content (indexed as total soluble solids of fruit juice, % TSS), with attention given to the timing of treatment application. A strong relationship existed between harvest index and fruit mass (r2 = 0.88) in control plants, whereas the correlation with fruit TSS was poor (r2 = 0.11). Augmentation of assimilate supply to fruit early in fruit development (before approx. 21 days before harvest, DBH) resulted in more fruit set and increased fruit biomass, whereas augmentation after 21 DBH resulted in increased fruit TSS. Thus, fruit biomass was increased (1644 cf. 1442 g FW per fruit for control, P = 0.02), but not TSS, on plants in which fruit set was delayed (source biomass increased, harvest index decreased from 59% for control to 38%). Treatment of plants with a cytokinin-based vegetative growth inhibitor at 14 DBH produced fruit with higher TSS (11.3 cf. 10.7% for control). Thinning fruit to leave 1 fruit per plant 1 week before harvest increased the proportion of fruit in a population that exceeded a quality control standard of 10% TSS from 20 to 80%. Variations in plant response with timing of treatment application are interpreted in terms of fruit development (cell division, cell expansion, and sugar accumulation phases). Although a detriment to yield (15 cf. 31 t/ha for control), the fruit thinning treatment was recommended for commercial use and a simple model was developed to calculate the required farm-gate price of fruit to make thinning economically viable.

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