Cytokinin Response Factor 2 positively regulates salicylic acid-mediated plant immunity in &lt;i&gt;Arabidopsis thaliana&lt;/i&gt;

Kwon, Tackmin

doi:10.5511/plantbiotechnology.16.0711a

Cited by 9 publications

(6 citation statements)

References 25 publications

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“…6 ). Such result agrees with those of the CRFs that highly participate in the crosstalk between cytokinin and other hormones, such as auxin, ABA, and salicylic acid [ 20 , 25 , 83 ]. To date, numbers of AP2/ERF TFs have been identified to be related to abiotic stress responses in various plant species [ 70 , 71 ].…”

Section: Discussionsupporting

confidence: 88%

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Comparative analysis of cytokinin response factors in Brassica diploids and amphidiploids and insights into the evolution of Brassica species

et al. 2018

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BackgroundCytokinin is a classical phytohormone that plays important roles in numerous plant growth and development processes. In plants, cytokinin signals are transduced by a two-component system, which involves many genes, including cytokinin response factors (CRFs). Although CRFs take vital part in the growth of Arabidopsis thaliana and Solanum lycopersicum, little information of the CRFs in the Brassica U-triangle species has been known yet.ResultsWe identified and compared 141 CRFs in the diploids and amphidiploids of Brassica species, including B. rapa, B. oleracea, B. nigra, B. napus, and B. juncea. For all the 141 CRFs, the sequence and structure analysis, physiological and biochemical characteristics analysis were performed. Meanwhile, the Ka/Ks ratios of orthologous and paralogous gene pairs were calculated, which indicated the natural selective pressure upon the overall length or a certain part of the CRFs. The expression profiles of CRFs in different tissues and under various stresses were analyzed in B. oleracea, B. nigra, and B. napus. The similarities and differences in gene sequences and expression profiles among the homologous genes of these species were discussed. In addition, AtCRF11 and its ortholog BrCRF11a were identified to be related to primary root growth in Arabidopsis.ConclusionThis study performed a genome-wide comparative analysis of the CRFs in the diploids and amphidiploids of the Brassica U-triangle species. Many similarities and differences in gene sequences and expression profiles existed among the CRF homologous genes of these species. In the bioinformatics analysis, we found the close relativity of the CRF homologous genes in the Brassica A and C genomes and the distinctiveness of those in the B genome, and the CRF homologous genes in B subgenome were considerably influenced by the A subgenome of B. juncea. In addition, we identified a new function of the Clade V CRFs related to root growth, which also clarified the functional conservation between Arabidopsis and B. rapa. These results not only offer useful information on the functional analysis of CRFs but also provide new insights into the evolution of Brassica species.Electronic supplementary materialThe online version of this article (10.1186/s12864-018-5114-y) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 88%

“…Notably, AtCRF2 can positively regulate salicylic acid-mediated plant immunity in A. thaliana , and plants overexpressing AtCRF5 exhibit pathogen resistance. All these phenomena suggest that CRFs play a role in biotic stress responses [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of cytokinin response factors in Brassica diploids and amphidiploids and insights into the evolution of Brassica species

et al. 2018

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“…The negative CK-regulating type A ARR transcription factors are found to be negative regulators of resistance to biotrophic pathogen H. arabidopsidis Noco2 (Argueso et al 2012). Overexpression of a CK response factor 2 (AtCRF2) leads to autoimmune response by enhancing SA biosynthesis in Arabidopsis (Kwon 2016). The direct binding targets of these transcription factors in the later cases were not known.…”

Section: Discussionmentioning

confidence: 99%

“…tomato DC3000, and a direct interaction was found between the CK-activated transcription factor ARR2 and the SA-response transcription factor TGA3 (TGA1A-related gene 3) (Choi et al 2010(Choi et al , 2011. Overexpression of a CK response factor 2 (AtCRF2) enhances SA biosynthesis and leads to autoimmune response in Arabidopsis (Kwon 2016). On the other hand, SA is found to inhibit CK signaling in resistance against H. arabidopsidis, which may form a feedback mechanism to fine-tune the effect of CK in plant immunity (Argueso et al 2012).…”

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confidence: 99%

A Role of Cytokinin Transporter in Arabidopsis Immunity

Wang

Shu

Sun

et al. 2017

MPMI

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The phytohormone cytokinin (CK) is not only essential for plant growth and development but also impacts plant immunity. A mutant screen in a constitutively active plant immune receptor mutant snc1 (suppressor of npr1, constitutive1) identified a suppressor mutation of SNC1-induced defense responses in an ABC transporter coding gene ABCG14. ABCG14 transports CK from roots to the shoots, and the suppression of the SNC1-mediated defense response by the loss of ABCG14 is due to a deficiency of trans-zeatin (tZ)-type CK in the shoot. In addition, exogenous application of the tZ-type CK enhances disease resistance associated with increased expression of the plant immune receptor gene SNC1. Taken together, this study further established the role of tZ-type CK in disease resistance and suggests a new intersection of CKs with plant immunity at the expression regulation of a plant immune receptor gene.

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“…As CRFs and Type-B ARRs both act downstream of AHKs and AHPs, they may share some common target genes while also having their own specific target genes. Functional studies have shown that CRFs are a cluster of plant vascular abundantly expressed genes that are involved in the development of cotyledons, leaves, and embryos, and the regulation process in correlation with various abiotic stresses and phytohormone interaction networks [ 13 , 121 , 122 , 123 , 124 ].…”

Section: Two-component Signaling Elements In Arabidopsismentioning

confidence: 99%

The Interaction Network and Signaling Specificity of Two-Component System in Arabidopsis

Huo

Liu

et al. 2020

IJMS

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Two-component systems (TCS) in plants have evolved into a more complicated multi-step phosphorelay (MSP) pathway, which employs histidine kinases (HKs), histidine-containing phosphotransfer proteins (HPts), and response regulators (RRs) to regulate various aspects of plant growth and development. How plants perceive the external signals, then integrate and transduce the secondary signals specifically to the desired destination, is a fundamental characteristic of the MSP signaling network. The TCS elements involved in the MSP pathway and molecular mechanisms of signal transduction have been best understood in the model plant Arabidopsis thaliana. In this review, we focus on updated knowledge on TCS signal transduction in Arabidopsis. We first present a brief description of the TCS elements; then, the protein–protein interaction network is established. Finally, we discuss the possible molecular mechanisms involved in the specificity of the MSP signaling at the mRNA and protein levels.

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Cytokinin Response Factor 2 positively regulates salicylic acid-mediated plant immunity in <i>Arabidopsis thaliana</i>

Cited by 9 publications

References 25 publications

Comparative analysis of cytokinin response factors in Brassica diploids and amphidiploids and insights into the evolution of Brassica species

Comparative analysis of cytokinin response factors in Brassica diploids and amphidiploids and insights into the evolution of Brassica species

A Role of Cytokinin Transporter in Arabidopsis Immunity

The Interaction Network and Signaling Specificity of Two-Component System in Arabidopsis

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