Effects of Exogenous Abscisic Acid on Carbohydrate Metabolism and the Expression Levels of Correlative Key Enzymes in Winter Wheat under Low Temperature

2013 ◽  
Vol 77 (3) ◽  
pp. 516-525 ◽  
Author(s):  
Lijie LIU ◽  
Jing CANG ◽  
Jing YU ◽  
Xing WANG ◽  
Ru HUANG ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Low Temperature ◽  
Winter Wheat ◽  
Carbohydrate Metabolism ◽  
Key Enzymes ◽  
Expression Levels

Effects of exogenous abscisic acid (ABA) on cucumber seedling leaf carbohydrate metabolism under low temperature

2008 ◽  
Vol 56 (3) ◽  
pp. 233-244 ◽  
Author(s):  
Fan-Zhen Meng ◽  
Li-Ping Hu ◽  
Shao-Hui Wang ◽  
Xiao-Lei Sui ◽  
Li Wei ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Low Temperature ◽  
Carbohydrate Metabolism ◽  
Cucumber Seedling ◽  
Seedling Leaf

scholarly journals Effect of Exogenous Gibberellin, Paclobutrazol, Abscisic Acid, and Ethrel Application on Bulblet Development in Lycoris radiata

2021 ◽  
Vol 11 ◽  
Author(s):  
Junxu Xu ◽  
Qingzhu Li ◽  
Ye Li ◽  
Liuyan Yang ◽  
Yongchun Zhang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Carbohydrate Metabolism ◽  
Starch Synthesis ◽  
Soluble Starch ◽  
Future Research ◽  
Expression Levels ◽  
Metabolism Enzymes ◽  
Genes Encoding ◽  
Lycoris Radiata ◽  
Bulblet Development

Lycoris species have great ornamental and medicinal values; however, their low regeneration efficiency significantly restricts their commercial production. Exogenous hormone application is an effective way to promote bulblet development, but their effect on Lycoris radiata has not been verified to date. In the present study, we examined the effect of different exogenous hormones on bulblet development in L. radiata, and found that gibberellic acid (GA) significantly inhibited, whereas paclobutrazol (PBZ), abscisic acid (ABA), and ethrel promoted bulblet development, especially PBZ, a GA biosynthesis inhibitor. Furthermore, GA reduced endogenous cytokinin (CK) content, as well as the activities of carbohydrate metabolism enzymes, including sucrose synthase (SUS) and glucose-1-phosphate adenylyltransferase (AGPase), by downregulating the expression levels of LrSUS1, LrSUS2, and genes encoding AGPase large and small subunits. This resulted in the decrease in carbohydrate accumulation in the bulblets, thus hindering their development. PBZ had the opposite effect to GA on carbohydrate metabolism; it decreased endogenous GA15 and GA24, thereby promoting bulblet development. ABA promoted endogenous auxin content and the activities of starch synthesis enzymes, especially soluble starch synthase (SSS) and granule-bound SS (GBSS), through the up-regulation of the expression levels of LrSS1, LrSS2, and LrGBSS1 genes, which could also result in the accumulation of carbohydrates in the bulblets and promote their development. In addition, ethrel application partly promoted bulblet development by promoting endogenous CK content. Although the accumulation of carbohydrates and the activity of starch enzymes were increased by ethrel treatment, we hypothesized that the effect of ethrel on regulating carbohydrate metabolism may be indirect. Our results could provide a basis for improving the propagation efficiency of L. radiata for production, as well as propose some directions for future research.

EFFECTS OF EXOGENOUS ABSCISIC ACID ON EXPRESSION OF COLD-REGULATED GENES IN WINTER WHEAT UNDER LOW TEMPERATURE STRESS

2018 ◽  
Vol 51 (1) ◽  
Author(s):  
LIJIE LIU ◽  
DONGXIANG ZHANG ◽  
ZHONGMIN JIN ◽  
ZHENZHU ZHANG ◽  
SHANSHAN LI ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Low Temperature ◽  
Winter Wheat ◽  
Temperature Stress ◽  
Low Temperature Stress

scholarly journals Genome-wide identification and expression pattern analysis of lipoxygenase gene family in banana

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fan Liu ◽  
Hua Li ◽  
Junwei Wu ◽  
Bin Wang ◽  
Na Tian ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Pcr Analysis ◽  
Type I ◽  
Segmental Duplications ◽  
Expression Levels ◽  
Genome Wide ◽  
Encoded Proteins ◽  
Gene Structures ◽  
Lipoxygenase Gene Family

AbstractThe LOX genes have been identified and characterized in many plant species, but studies on the banana LOX genes are very limited. In this study, we respectively identified 18 MaLOX, 11 MbLOX, and 12 MiLOX genes from the Musa acuminata, M. balbisiana and M. itinerans genome data, investigated their gene structures and characterized the physicochemical properties of their encoded proteins. Banana LOXs showed a preference for using and ending with G/C and their encoded proteins can be classified into 9-LOX, Type I 13-LOX and Type II 13-LOX subfamilies. The expansion of the MaLOXs might result from the combined actions of genome-wide, tandem, and segmental duplications. However, tandem and segmental duplications contribute to the expansion of MbLOXs. Transcriptome data based gene expression analysis showed that MaLOX1, 4, and 7 were highly expressed in fruit and their expression levels were significantly regulated by ethylene. And 11, 12 and 7 MaLOXs were found to be low temperature-, high temperature-, and Fusarium oxysporum f. sp. Cubense tropical race 4 (FocTR4)-responsive, respectively. MaLOX8, 9 and 13 are responsive to all the three stresses, MaLOX4 and MaLOX12 are high temperature- and FocTR4-responsive; MaLOX6 and MaLOX17 are significantly induced by low temperature and FocTR4; and the expression of MaLOX7 and MaLOX16 are only affected by high temperature. Quantitative real-time PCR (qRT-PCR) analysis revealed that the expression levels of several MaLOXs are regulated by MeJA and FocTR4, indicating that they can increase the resistance of banana by regulating the JA pathway. Additionally, the weighted gene co-expression network analysis (WGCNA) of MaLOXs revealed 3 models respectively for 5 (MaLOX7-11), 3 (MaLOX6, 13, and 17), and 1 (MaLOX12) MaLOX genes. Our findings can provide valuable information for the characterization, evolution, diversity and functionality of MaLOX, MbLOX and MiLOX genes and are helpful for understanding the roles of LOXs in banana growth and development and adaptations to different stresses.

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