ArticlePlant physiology2004
Role of Hsp17.4-CII as coregulator and cytoplasmic retention factor of tomato heat stress transcription factor HsfA2.
Article in Plant physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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Who cites it
38 citing papers in PubMed, 95 citations in OpenAlex.
- Splicing regulation by RS2Z36 controls ovary patterning and fruit growth in tomato.Plant molecular biology · 2026Article
- ZmHsp18 screened from the ZmHsp20 gene family confers thermotolerance in maize.BMC plant biology · 2024Article
- Impact of heat stress on physiological characteristics and expression of heat shock proteins (HSPs) in groundnut (Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Comparative proteomics in tall fescue to reveal underlying mechanisms for improving Photosystem II thermotolerance during heat stress memory.BMC genomics · 2024Article
- A small heat shock protein (SlHSP17.3) in tomato plays a positive role in salt stress.Frontiers in plant science · 2024Article
- Regulatory Mechanisms of Heat Stress Response and Thermomorphogenesis in Plants.Plants (Basel, Switzerland) · 2022Review
- Article
- Histone variants and modifications during abiotic stress response.Frontiers in plant science · 2022Review
- An overview of heat stress in tomato (Saudi journal of biological sciences · 2021Review
- HEAT SHOCK FACTOR A8a Modulates Flavonoid Synthesis and Drought Tolerance.Plant physiology · 2020Article
- Characterization of novel regulators for heat stress tolerance in tomato from Indian sub-continent.Plant biotechnology journal · 2020Article
- Alternative Splicing Provides a Mechanism to Regulate LlHSFA3 Function in Response to Heat Stress in Lily.Plant physiology · 2019Article
- Mechanisms underlying the enhanced biomass and abiotic stress tolerance phenotype of an Arabidopsis MIOX over-expresser.Plant direct · 2019Article
- Article
- Transcriptional regulation of heat shock proteins and ascorbate peroxidase by CtHsfA2b from African bermudagrass conferring heat tolerance in Arabidopsis.Scientific reports · 2016Article
- HsfA2 Controls the Activity of Developmentally and Stress-Regulated Heat Stress Protection Mechanisms in Tomato Male Reproductive Tissues.Plant physiology · 2016Article
- The Plant Heat Stress Transcription Factors (HSFs): Structure, Regulation, and Function in Response to Abiotic Stresses.Frontiers in plant science · 2016Review
- The α-Crystallin Domain Containing Genes: Identification, Phylogeny and Expression Profiling in Abiotic Stress, Phytohormone Response and Development in Tomato (Solanum lycopersicum).Frontiers in plant science · 2016Article
- LlHSFA1, a novel heat stress transcription factor in lily (Lilium longiflorum), can interact with LlHSFA2 and enhance the thermotolerance of transgenic Arabidopsis thaliana.Plant cell reports · 2014Article
- cDNA-AFLP analysis reveals heat shock proteins play important roles in mediating cold, heat, and drought tolerance in Ammopiptanthus mongolicus.Functional & integrative genomics · 2014Article
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
HsfA2 is a heat stress (hs)-induced Hsf in peruvian tomato (Lycopersicon peruvianum) and the cultivated form Lycopersicon esculentum. Due to the high activator potential and the continued accumulation during repeated cycles of heat stress and recovery, HsfA2 becomes a dominant Hsf in thermotolerant cells. The formation of heterooligomeric complexes with HsfA1 leads to nuclear retention and enhanced transcriptional activity of HsfA2. This effect seems to represent one part of potential molecular mechanisms involved in its activity control. As shown in this paper, the activity of HsfA2 is also controlled by a network of nucleocytoplasmic small Hsps influencing its solubility, intracellular localization and activator function. By yeast two-hybrid interaction and transient coexpression studies in tobacco (Nicotiana plumbaginifolia) mesophyll protoplasts, we found that tomato (Lycopersicon esculentum) Hsp17.4-CII acts as corepressor of HsfA2. Given appropriate conditions, both proteins together formed large cytosolic aggregates which could be solubilized in presence of class CI sHsps. However, independent of the formation of aggregates or of the nucleocytoplasmic distribution of HsfA2, its transcriptional activity was specifically repressed by interaction of Hsp17.4-CII with the C-terminal activator domain. Although not identical in all aspects, the situation with the highly expressed, heat stress-inducible Arabidopsis HsfA2 was found to be principally similar. In corresponding reporter assays its activity was repressed in presence of AtHsp17.7-CII but not of AtHsp17.6-CII or LpHsp17.4-CII.
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