scholarly journals Phospholipid:Diacylglycerol Acyltransferase-Mediated Triacylglyerol Synthesis Augments Basal Thermotolerance

2017 ◽  
Vol 175 (1) ◽  
pp. 486-497 ◽  
Author(s):  
Stephanie P. Mueller ◽  
Melissa Unger ◽  
Lena Guender ◽  
Agnes Fekete ◽  
Martin J. Mueller
Keyword(s):  
Basal Thermotolerance

scholarly journals MdVQ37 overexpression reduces basal thermotolerance in transgenic apple by affecting transcription factor activity and salicylic acid homeostasis

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Qinglong Dong ◽  
Dingyue Duan ◽  
Wenqian Zheng ◽  
Dong Huang ◽  
Qian Wang ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Salicylic Acid ◽  
Plant Growth ◽  
Stress Factors ◽  
Regulatory Function ◽  
Transcription Factor Activity ◽  
Factor Activity ◽  
Transgenic Lines ◽  
Basal Thermotolerance ◽  
Transgenic Apple

AbstractHigh temperature (HT) is one of the most important environmental stress factors and seriously threatens plant growth, development, and production. VQ motif-containing proteins are transcriptional regulators that have been reported to regulate plant growth and developmental processes, including responses to biotic and abiotic stresses. However, the relationships between VQ motif-containing proteins and HT stress have not been studied in depth in plants. In this study, transgenic apple (Malus domestica) plants overexpressing the apple VQ motif-containing protein-coding gene (MdVQ37) were exposed to HT stress, and the transgenic lines exhibited a heat-sensitive phenotype. In addition, physiological and biochemical studies revealed that, compared with WT plants, transgenic lines had lower enzymatic activity and photosynthetic capacity and lower amounts of nonenzymatic antioxidant system metabolites under HT stress. Transcriptome analysis revealed 1379 genes whose expression differed between the transgenic lines and WT plants. GO and KEGG pathway analyses showed that transcription factor activity and plant hormone signaling pathways were differentially influenced and enriched in the transgenic lines. Salicylic acid (SA) content analysis indicated that overexpression of MdVQ37 reduced the content of endogenous SA by regulating the expression of SA catabolism-related genes, which ultimately resulted in disruption of the SA-dependent signaling pathway under HT stress. The application of SA slightly increased the survival rate of the transgenic lines under HT stress. Taken together, our results indicate that apple MdVQ37 has a regulatory function in basal thermotolerance by modulating the activity of transcription factors and SA homeostasis. Overall, this study provides novel insights that improve our understanding of the various functions of VQ motif-containing proteins.

scholarly journals Constraints, independence, and evolution of thermal plasticity: Probing genetic architecture of long- and short-term thermal acclimation

2015 ◽  
Vol 112 (14) ◽  
pp. 4399-4404 ◽  
Author(s):  
Alison R. Gerken ◽  
Olivia C. Eller ◽  
Daniel A. Hahn ◽  
Theodore J. Morgan
Keyword(s):  
Cold Tolerance ◽  
Negative Correlation ◽  
Genetic Architecture ◽  
Cold Hardening ◽  
Short Term ◽  
Heritable Variation ◽  
Thermal Plasticity ◽  
Rapid Cold Hardening ◽  
Basal Thermotolerance

Seasonal and daily thermal variation can limit species distributions because of physiological tolerances. Low temperatures are particularly challenging for ectotherms, which use both basal thermotolerance and acclimation, an adaptive plastic response, to mitigate thermal stress. Both basal thermotolerance and acclimation are thought to be important for local adaptation and persistence in the face of climate change. However, the evolutionary independence of basal and plastic tolerances remains unclear. Acclimation can occur over longer (seasonal) or shorter (hours to days) time scales, and the degree of mechanistic overlap is unresolved. Using a midlatitude population ofDrosophila melanogaster, we show substantial heritable variation in both short- and long-term acclimation. Rapid cold hardening (short-term plasticity) and developmental acclimation (long-term plasticity) are positively correlated, suggesting shared mechanisms. However, there are independent components of these traits, because developmentally acclimated flies respond positively to short-term acclimation. A strong negative correlation between basal cold tolerance and developmental acclimation suggests that basal cold tolerance may constrain developmental acclimation, whereas a weaker negative correlation between basal cold tolerance and short-term acclimation suggests less constraint. Using genome-wide association mapping, we show the genetic architecture of rapid cold hardening and developmental acclimation responses are nonoverlapping at the SNP and corresponding gene level. However, genes associated with each trait share functional similarities, including genes involved in apoptosis and autophagy, cytoskeletal and membrane structural components, and ion binding and transport. These results indicate substantial opportunity for short-term and long-term acclimation responses to evolve separately from each other and for short-term acclimation to evolve separately from basal thermotolerance.

scholarly journals The HaDREB2 transcription factor enhances basal thermotolerance and longevity of seeds through functional interaction with HaHSFA9

2009 ◽  
Vol 9 (1) ◽  
pp. 75 ◽  
Author(s):  
Concepción Almoguera ◽  
Pilar Prieto-Dapena ◽  
Juan Díaz-Martín ◽  
José M Espinosa ◽  
Raúl Carranco ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Functional Interaction ◽  
Basal Thermotolerance

A wheat lipid transfer protein 3 could enhance the basal thermotolerance and oxidative stress resistance of Arabidopsis

Gene ◽  
2014 ◽  
Vol 550 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Fei Wang ◽  
Xin-shan Zang ◽  
Muhammad Rezaul Kabir ◽  
Ke-lu Liu ◽  
Zhen-shan Liu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Resistance ◽  
Lipid Transfer Protein ◽  
Lipid Transfer ◽  
Oxidative Stress Resistance ◽  
Transfer Protein ◽  
Basal Thermotolerance ◽  
And Oxidative Stress

scholarly journals Maize HSP101 Plays Important Roles in Both Induced and Basal Thermotolerance and Primary Root Growth

2002 ◽  
Vol 14 (7) ◽  
pp. 1621-1633 ◽  
Author(s):  
Jorge Nieto-Sotelo ◽  
Luz María Martínez ◽  
Georgina Ponce ◽  
Gladys I. Cassab ◽  
Alejandro Alagón ◽  
...  
Keyword(s):  
Root Growth ◽  
Primary Root ◽  
Primary Root Growth ◽  
Basal Thermotolerance

scholarly journals MdATG18a overexpression improves basal thermotolerance in transgenic apple by decreasing damage to chloroplasts

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Liuqing Huo ◽  
Xun Sun ◽  
Zijian Guo ◽  
Xin Jia ◽  
Runmin Che ◽  
...  
Keyword(s):  
Basal Thermotolerance ◽  
Transgenic Apple

scholarly journals SIZ1 Small Ubiquitin-Like Modifier E3 Ligase Facilitates Basal Thermotolerance in Arabidopsis Independent of Salicylic Acid

2006 ◽  
Vol 142 (4) ◽  
pp. 1548-1558 ◽  
Author(s):  
Chan Yul Yoo ◽  
Kenji Miura ◽  
Jing Bo Jin ◽  
Jiyoung Lee ◽  
Hyeong Cheol Park ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
E3 Ligase ◽  
Basal Thermotolerance
Sign in / Sign up

Export Citation Format

Share Document