Tobacco transcription factor WRKY4 is a modulator of leaf development and disease resistance

Ren, X. J.; Huang, Weidong; Li, W. Z.; Yu, Di Qiu

doi:10.1007/s10535-010-0121-0

Cited by 17 publications

(6 citation statements)

References 35 publications

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“…According to previous reports, WRKY proteins are involved in multiple biotic stress responses as well as developmental and physiological processes, including trichome and seed coat development [ 14 ], regulation of seed size [ 15 ], modulation of leaf development [ 16 ] and regulation of leaf senescence [ 17 ]. Currently, WRKY proteins are also proposed to be involved in the regulation of plant responses to abiotic stresses.…”

Section: Introductionmentioning

confidence: 99%

The Cotton WRKY Gene GhWRKY41 Positively Regulates Salt and Drought Stress Tolerance in Transgenic Nicotiana benthamiana

et al. 2015

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WRKY transcription factors constitute a very large family of proteins in plants and participate in modulating plant biological processes, such as growth, development and stress responses. However, the exact roles of WRKY proteins are unclear, particularly in non-model plants. In this study, Gossypium hirsutum WRKY41 (GhWRKY41) was isolated and transformed into Nicotiana benthamiana. Our results showed that overexpression of GhWRKY41 enhanced the drought and salt stress tolerance of transgenic Nicotiana benthamiana. The transgenic plants exhibited lower malondialdehyde content and higher antioxidant enzyme activity, and the expression of antioxidant genes was upregulated in transgenic plants exposed to osmotic stress. A β-glucuronidase (GUS) staining assay showed that GhWRKY41 was highly expressed in the stomata when plants were exposed to osmotic stress, and plants overexpressing GhWRKY41 exhibited enhanced stomatal closure when they were exposed to osmotic stress. Taken together, our findings demonstrate that GhWRKY41 may enhance plant tolerance to stress by functioning as a positive regulator of stoma closure and by regulating reactive oxygen species (ROS) scavenging and the expression of antioxidant genes.

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Section: Introductionmentioning

confidence: 99%

The Cotton WRKY Gene GhWRKY41 Positively Regulates Salt and Drought Stress Tolerance in Transgenic Nicotiana benthamiana

et al. 2015

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“…Among these, WRKY TF are a large family of regulatory proteins (Eulgem et al 1999, Wei et al 2008, defined as master regulators of plant response to biotic and abiotic stimuli (Du and Chen. 2000, Pandey and Somossich 2009, Ren et al 2010. However, few studies have described the involvement of these transcription factors in light signaling.…”

Section: Discussionmentioning

confidence: 99%

“…These interact with diverse partners to control a broad range of signaling processes (Wang and Deng 2002), as being essential positive signal transducers for phyA-mediated FR-high irradiance responses (HIRs) in response to white light. With respect to JrBtbTaz TDF, this is one member of a BTB protein subfamily (Ren et al 2007, Robert et al 2008, Mandadi et al 2009). The role of BTB proteins in mediating signaling pathways of diverse stimuli were recently documented (Mandadi et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Early gene expression in the walnut tree occurring during stimulation of leaf hydraulic conductance by irradiance

Baaziz¹,

Lopez²,

Bouzid³

et al. 2012

Biologia plant.

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International audienceLeaf hydraulic conductance (Kleaf) plays a significant part in plant-water regulation. In walnut leaves, Kleaf is stimulated by irradiance and closely relates to the accumulation of JrPIP2s aquaporin transcripts, but it is independent of stomatal aperture. To provide an insight into the early molecular events occurred during light-induced Kleaf, a large-scale transcriptomic analysis consisting of the cDNA-amplified fragment length polymorphism (AFLP) was carried out on walnut leaves maintained under irradiance or in darkness. Of the total 12 000 transcript-derived fragments (TDFs) obtained using cDNA-AFLP with 128 primer pairs, 187 TDFs were selected after sequencing, and only 93 (49 %) that had been ascribed known functions through BLAST searching of the GenBank databases. Most of these TDFs correspond to genes whose protein products are involved in cellular regulation (57.9 %) and global metabolism (39.8 %). To validate cDNA-AFLP expression patterns, 30 TDFs were further analyzed using real-time quantitative polymerase chain reaction. Moreover, exposure of leaves to irradiance was accompanied by the modification of the Ca2+-signaling pathway, ubiquitin-proteasome pathway, vesicle trafficking process and expression of multiple transcription factors

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“…These AP2/EREBP TFs are involved in the response to abiotic stresses and ABA, and the NAC TFs play an important role in senescence. On the other hand, the SubTs contains many WRKY TFs that are responsive to biotic stresses, such as WRKY4 (CL8232; Lai et al, 2008;Ren et al, 2010), WRKY75 (CL11313; Encinas-Villarejo et al, 2009), and WRKY50 (CL12354; Gao et al, 2011). These results suggest that the TFs related to abiotic and biotic stresses are critical factors that can be used to distinguish tight-and loose-skin citrus and play different roles in the senescence of different citrus varieties.…”

Section: Differential Expression Patterns Of Transcription Factors Ammentioning

confidence: 92%

Network Analysis of Postharvest Senescence Process in Citrus Fruits Revealed by Transcriptomic and Metabolomic Profiling

Ding¹,

Chang²,

Ma³

et al. 2015

Plant Physiol.

108

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Citrus (Citrus spp.), a nonclimacteric fruit, is one of the most important fruit crops in global fruit industry. However, the biological behavior of citrus fruit ripening and postharvest senescence remains unclear. To better understand the senescence process of citrus fruit, we analyzed data sets from commercial microarrays, gas chromatography-mass spectrometry, and liquid chromatography-mass spectrometry and validated physiological quality detection of four main varieties in the genus Citrus. Network-based approaches of data mining and modeling were used to investigate complex molecular processes in citrus. The Citrus Metabolic Pathway Network and correlation networks were constructed to explore the modules and relationships of the functional genes/metabolites. We found that the different flesh-rind transport of nutrients and water due to the anatomic structural differences among citrus varieties might be an important factor that influences fruit senescence behavior. We then modeled and verified the citrus senescence process. As fruit rind is exposed directly to the environment, which results in energy expenditure in response to biotic and abiotic stresses, nutrients are exported from flesh to rind to maintain the activity of the whole fruit. The depletion of internal substances causes abiotic stresses, which further induces phytohormone reactions, transcription factor regulation, and a series of physiological and biochemical reactions.

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Tobacco transcription factor WRKY4 is a modulator of leaf development and disease resistance

Cited by 17 publications

References 35 publications

The Cotton WRKY Gene GhWRKY41 Positively Regulates Salt and Drought Stress Tolerance in Transgenic Nicotiana benthamiana

The Cotton WRKY Gene GhWRKY41 Positively Regulates Salt and Drought Stress Tolerance in Transgenic Nicotiana benthamiana

Early gene expression in the walnut tree occurring during stimulation of leaf hydraulic conductance by irradiance

Network Analysis of Postharvest Senescence Process in Citrus Fruits Revealed by Transcriptomic and Metabolomic Profiling

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