scholarly journals The Promotive Effect of Brassinolide on Lamina Joint-Cell Elongation, Germination and Seedling Growth under Low-Temperature Stress in Rice (Oryza sativa L.)

2001 ◽  
Vol 4 (3) ◽  
pp. 210-214 ◽  
Author(s):  
Seiichi Fujii ◽  
Hitoshi Saka
Keyword(s):  
Oryza Sativa ◽  
Low Temperature ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Cell Elongation ◽  
Oryza Sativa L ◽  
Low Temperature Stress ◽  
Promotive Effect ◽  
Lamina Joint

A snapshot of the low temperature stress transcriptome of developing rice seedlings (Oryza sativa L.) via ESTs from subtracted cDNA library

2003 ◽  
Vol 107 (6) ◽  
pp. 1071-1082 ◽  
Author(s):  
B. G. de los Reyes ◽  
M. Morsy ◽  
J. Gibbons ◽  
T. S. N. Varma ◽  
W. Antoine ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Low Temperature ◽  
Cdna Library ◽  
Temperature Stress ◽  
Oryza Sativa L ◽  
Low Temperature Stress ◽  
Rice Seedlings

Photosynthesis and antioxidant metabolism modulate the low-temperature resistance of seed germination in maize

2021 ◽  
Author(s):  
Aiju Meng ◽  
Daxing Wen ◽  
Chunqing Zhang
Keyword(s):  
Seed Germination ◽  
Low Temperature ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Low Temperature Stress ◽  
Maize Seed ◽  
Down Regulation ◽  
Antioxidant Metabolism ◽  
Temperature Resistance ◽  
Low Temperature Resistance

Spring maize is usually subjected to low-temperature stress during seed germination, which retards seedling growth even if under a suitable temperature. However, the mechanism underlying maize seed germination under low-temperature stress modulating seedling growth after being transferred to normal temperature is still ambiguous. In this study, we used two maize inbred lines with different low-temperature resistance (SM and RM) to investigate the mechanism. The results showed that the SM line had higher lipid peroxidation and lower total antioxidant capacity and germination percentage than the RM line under low-temperature stress, which indicated that the SM line was more vulnerable to low-temperature stress. Further transcriptome analysis revealed that seed germination under low-temperature stress caused down-regulation of photosynthesis related gene ontology (GO) terms in two lines. Moreover, the SM line displayed down-regulation of ribosome and superoxide dismutase (SOD) related genes, whereas genes involved in SOD and vitamin B6 were up-regulated in the RM line. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that photosynthesis and antioxidant metabolism related pathways played important roles in seed germination in response to low-temperature stress, and the photosynthetic system displayed a higher damage degree in the SM line. Both qRT-PCR and physiological characteristics experiments showed similar results with transcriptome data. Taken together, we propose a model for maize seed germination in response to low-temperature stress.

Cluster analysis for different rapeseed varieties on seed germination and seedling growth under low temperature stress

2015 ◽  
Vol 16 (1) ◽  
pp. 68 ◽  
Author(s):  
Yang Ping ◽  
Xian Meng-Zhu ◽  
Zhang Zhe ◽  
Zhang Xiao-Hong ◽  
HU Li-Yong ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Seed Germination ◽  
Low Temperature ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Low Temperature Stress

scholarly journals 24-Epibrassinolide Ameliorates Endogenous Hormone Levels to Enhance Low-Temperature Stress Tolerance in Cucumber Seedlings

2018 ◽  
Vol 19 (9) ◽  
pp. 2497 ◽  
Author(s):  
Ali Anwar ◽  
Longqiang Bai ◽  
Li Miao ◽  
Yumei Liu ◽  
Shuzhen Li ◽  
...  
Keyword(s):  
Gene Expression ◽  
Low Temperature ◽  
Antioxidant Enzyme ◽  
Temperature Stress ◽  
Seedling Growth ◽  
Photosynthetic Capacity ◽  
Low Temperature Stress ◽  
Endogenous Hormones ◽  
Cucumber Seedling ◽  
Biosynthesis Gene

Phytohormone biosynthesis and accumulation are essential for plant growth and development and stress responses. Here, we investigated the effects of 24-epibrassinolide (EBR) on physiological and biochemical mechanisms in cucumber leaves under low-temperature stress. The cucumber seedlings were exposed to treatments as follows: NT (normal temperature, 26 °C/18 °C day/night), and three low-temperature (12 °C/8 °C day/night) treatments: CK (low-temperature stress); EBR (low-temperature and 0.1 μM EBR); and BZR (low-temperature and 4 μM BZR, a specific EBR biosynthesis inhibitor). The results indicated that low-temperature stress proportionately decreased cucumber seedling growth and the strong seedling index, chlorophyll (Chl) content, photosynthetic capacity, and antioxidant enzyme activities, while increasing reactive oxygen species (ROS) and malondialdehyde (MDA) contents, hormone levels, and EBR biosynthesis gene expression level. However, EBR treatments significantly enhanced cucumber seedling growth and the strong seedling index, chlorophyll content, photosynthetic capacity, activities of antioxidant enzymes, the cell membrane stability, and endogenous hormones, and upregulated EBR biosynthesis gene expression level, while decreasing ROS and the MDA content. Based on these results, it can be concluded that exogenous EBR regulates endogenous hormones by activating at the transcript level EBR biosynthetic genes, which increases antioxidant enzyme capacity levels and reduces the overproduction of ROS and MDA, protecting chlorophyll and photosynthetic machinery, thus improving cucumber seedling growth.

Differential metabolic response of cultured rice (Oryza sativa ) cells exposed to high- and low-temperature stress

PROTEOMICS ◽  
2010 ◽  
Vol 10 (16) ◽  
pp. 3001-3019 ◽  
Author(s):  
Chumithri Gayani Gammulla ◽  
Dana Pascovici ◽  
Brian J. Atwell ◽  
Paul A. Haynes
Keyword(s):  
Oryza Sativa ◽  
Low Temperature ◽  
Temperature Stress ◽  
Metabolic Response ◽  
Low Temperature Stress
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