4 edition of Drought Stress Signal Transduction by the Hd-Zip Transcription Factors Athb6 & Athb7 found in the catalog.
Drought Stress Signal Transduction by the Hd-Zip Transcription Factors Athb6 & Athb7
by Uppsala Universitet
Written in English
|Series||Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, 690|
|The Physical Object|
|Number of Pages||50|
Hjellström M. Drought stress signal transduction by the HD-Zip transcription factors ATHB6 and ATHB7. Acta Universitatis Upsaliensis. Comprehensive Summaries Uppsala diss. Faculty Sci. Technol. Cited by: 9. The HD-Zip family of transcription factors is unique to the plant kingdom. These proteins exhibit the singular combination of a homeodomain with a leucine zipper acting as a dimerization motif. They can be classified into four subfamilies, according to a set of distinctive features that include DNA-binding specificities, gene structures, additional common motifs and physiological by:
In rice, Oshox22 has been shown to affect ABA biosynthesis and regulates drought and salt responses through ABA-mediated signal transduction pathways (Zhang et al. ). These findings suggest that HD-Zip transcription factors mediate drought responses through either ABA-dependent or ABA-independent by: Abstract: The homeodomain-leucine zipper (HD-ZIP) is a plant-speciﬁc transcription factor family that plays important roles in plant developmental processes in response to multiple stressors. We previously isolated a cotton HD-ZIP class I transcription factor gene, GhHB12, which is regulated by the circadian clock and by: 2.
In this study, we present the analysis of the transcriptional regulator ATHB6 as a target of ABI1 that links PP2C with gene regulation. ATHB6 belongs to the plant‐specific HD‐Zip class. Gene expression of ATHB6 is up‐regulated by ABA and during drought stress (Söderman et al., ). Our analysis now reveals physical interaction of ATHB6 Cited by: AREB1, AREB2, and ABF3 are master transcription factors that cooperatively regulate ABRE-dependent ABA signaling involved in drought stress Cited by: 4.
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Drought Stress Signal Transduction by the HD-Zip Transcription Factors ATHB6 and ATHB7 Article January with 32 Reads How we measure. (English) Doctoral thesis, comprehensive summary (Other academic) Abstract [en] This work describes the regulation of drought stress responses in Arabidopsis thaliana and adresses the roles of the homeodomain-leucine zipper (HD-Zip) transcription factors in this regulation.
The characteristics of ATHB6 and ATHB7, two genes encoding class I HD-Zip transcription factors were analysed. The characteristics of ATHB6 and ATHB7, two genes encoding class I HD-Zip transcription factors were analysed.
Expression of ATHB6 and ATHB7 was transcriptionally activated in plants subjected to water deficit or exogenous treatment with abscisic acid (ABA).Author: Mattias Hjellström. Hjellström, M., Drought Stress Signal Transduction by the HD-Zip Transcription factors ATHB6 and ATHB7. Acta Universitatis Upsaliensis.
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology Uppsala. ISBN This work describes the regulation of drought stress responses in Arabidopsis. Table 1. HD-Zip I genes involved in abiotic stress responses in plants.
Involved in abiotic stress Gene Plant Reference Drought stress AtHB6 Arabidopsis thaliana Himmelbach et al. () AtHB7 Arabidopsis thaliana Romani et al. (); Olsson et al. () AtHB12 Arabidopsis thaliana Valdés et al. (); Son et al. () Oshox4 Oryza sative L. Dai et al. (); Zhou et al. Medicine, Biology.
Salt and drought stress signal transduction consists of ionic and osmotic homeostasis signaling pathways, detoxification (i.e., damage control and repair) response pathways, and pathways for growth regulation.
The ionic aspect of salt stress is signaled via the SOS pathway where a calcium-responsive SOS3-SOS2 protein kinase complex controls the expression and activity of ion transporters. large-scale Hybrid Transcription Factor approach, we identi ﬁed a bZIP transcriptional factor, O. sativa ABA responsive element binding factor 1 (OsABF1), which acts as a suppressor of ﬂoral transition in a photoperiod-independent by: To develop crop plant with enhanced tolerance of drought stress, a basic understanding of physiological, biochemical, and gene regulatory networks is essential.
In the signal transduction network that leads from the perception of stress signals to the expression of stress‐responsive genes, transcription factors (TFs) play an essential by: Moreover, it was demonstrated that AtHB6 is able to interact with ABI1, a key component of ABA signal transduction pathway Functions in Plant Responses to Environmental Conditions.
Most reports characterizing HD‐Zip I functions related these TFs with abiotic stress responses and a few ones with illumination conditions sens Cited by: Arabidopsis AtHB7 and AtHB12 transcription factors (TFs) belong to the homeodomain-leucine zipper subfamily I (HD-Zip I) and present 62% amino acid identity.
These TFs have been associated with the control of plant development and abiotic stress responses; however, at present it is not completely understood how AtHB7 and AtHB12 regulate these by: Transcription Factors and Plants Response to Drought Stress: Current Understanding and Future Directions Rohit Joshi 1, Shabir H.
Wani 2, Balwant Singh 3, Abhishek Bohra 4, Zahoor A. Dar 5, Ajaz A. Lone 5, Ashwani Pareek 6 and Sneh L. Singla-Pareek 1*Cited by: binding proteins (DREB) are important transcription factors that induce a set of abiotic stress-related genes and impart stress endurance to plants.
The DREB transcription factors could be dichotomized as DREB1 involved during low temperature and dehydration signal transduction pathway (Agrawal et al., ).
DREB5 is reported. The dynamics and action of ATHB6 induction could form a basis for incremental desensitization of the stomata to the accumulating hormonal signal by accumulating the HD-Zip protein as a negative regulator of the ABA by: TFs play key roles in regulating signal transduction pathways and, in plants, they are main actors in the responses to environmental variations with consequences in growth and differentiation.
Some TFs are regulated by one or more abiotic stress factors such as cold, heat, drought and salinity, which suggests pathway cross-talk [3,4].Cited by: Regulatory network of gene expression in response to drought and cold stresses: specificity and crosstalk of gene networks.
Cis-acting elements that are involved in stress-responsive transcription are shown in boxes. Transcription factors that control stress-inducible gene expression are shown in circles or by: The homeodomain leucine zipper (HD-Zip) transcription factor family is one of the largest plant specific superfamilies, and includes genes with roles in modulation of plant growth and response to environmental stresses.
Many HD-Zip genes are characterized in Arabidopsis (Arabidopsis thaliana), and members of the family are being investigated for abiotic stress responses in rice (Oryza.
HD-Zip I is a conserved HD-Zip domain that determines the specific DNA binding domain; mainly responds to external signals, such as extreme temperature, drought and osmotic pressure in abiotic stress; and regulates plant growth to adapt to the by: 9.
III. Dissecting the common cis element, dimerization and cell specificity of HD‐Zip I and HD‐Zip II transcription factors. HD‐Zip I and HD‐Zip II TFs cis are involved in adapting plant growth to changes in environmental conditions.
The mechanism by which they exert their control over plant development has not yet been by: Binding of HD-Zip transcription factors to the promoter of PP2C genes.
Regulatory interactions of (a, c) ATHB7 and (b, d) ATHB Data are shown as mean ± SE; n C 3. HD-Zip I and II, Transcription Factors Involved in the the participation of HD-Zip I and II transcription factors in the response to abiotic stress, such as water deficit, low temperature, osmotic In ATHB5, ATHB6 and ATHB7 were isolated using a.
Oshox22 belongs to the homeodomain-leucine zipper (HD-Zip) family I of transcription factors, most of which have unknown functions. Here we show that the expression of Oshox22 is strongly induced by salt stress, abscisic acid (ABA), and polyethylene glycol treatment (PEG), and weakly by cold stress.
Trans-activation assays in yeast and transient expression analyses in rice Cited by: Low water availability is the major environmental factor limiting growth and productivity of plants and crops and is therefore considered of high importance for agriculture affected by climate change.
Identifying regulatory components controlling the response and tolerance to drought stress is thus of major importance.
The NAC transcription factor (TF) JUNGBRUNNEN1 (JUB1) from Cited by: 9. Figure 1. A Generic Pathway for the Transduction of Cold, Drought, and Salt Stress Signals in Plants. Examples of signaling components in each of the steps are shown (for more detailed information, see Xiong and Zhu, ).Secondary signaling molecules can cause receptor-mediated Ca 2+ release (indicated with a feedback arrow).
Examples of signaling partners that modulate the main Cited by: