Molecular cloning and characterization of a gene encoding RING zinc finger ankyrin protein from drought-tolerant Artemisia desertorum

Yang, Xiuhong; Sun, Chao; Hu, Yuanlei; Zhang, Lin

doi:10.1007/s12038-008-0026-7

Cited by 30 publications

(32 citation statements)

References 31 publications

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Section: Ank-rf With E3 Ubiquitin Ligase Activitymentioning

confidence: 99%

“…A RING zinc finger ankyrin protein gene from Artemisia desertorum, designated AdZFP1, is strongly induced under various environmental stresses such as drought, salt, cold, heat and abscisic acid (ABA) treatment (Yang et al 2008; Table 2). Overexpression of AdZFP1 in tobacco is known to enhance drought tolerance (Yang et al 2008; Table 2). The Star (Solanum tuberosum ankyrin repeat) gene, the first ANK-RF gene reported in potato, is involved in late blight resistance and organ development (Wu et al 2009; Table 2).…”

Section: Ank-rf With E3 Ubiquitin Ligase Activitymentioning

confidence: 99%

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Molecular insights into the function of ankyrin proteins in plants

Kim

Chandran

et al. 2015

J. Plant Biol.

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Ankyrin (ANK) repeat domain-containing proteins comprise one of the largest known protein superfamilies in all species including plants. Recently, several genomeanalysis studies have provided valuable information on the structure of ANK proteins in plants. Among the 13 subgroups based on the presence of various additional domains in addition to the ANK domain, the E3 ubiquitin ligase activity and transcriptional regulation functions of ANK-RF and ANK-ZF subgroup members, respectively, are relatively well understood. NPR1 (nonexpressor of pathogenesis-related1), a key regulator of systemic acquired resistance in Arabidopsis, is a noteworthy member of the ANK-BTB subgroup; however, ANK-M and ANK-TM, the two main subgroups, have been less functionally characterized. With the ability to mediate protein-protein interactions, the majority of plant ANK proteins play crucial roles in defense responses and, on occasion, functions in growth and development. In this review, we summarize on the current knowledge of plant ANK superfamily members and focus on ANK proteins involved in defense responses. In addition, we provide a valuable framework for the future functional characterization of ANK genes with current unknown function in rice, a model crop species.

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Section: Ank-rf With E3 Ubiquitin Ligase Activitymentioning

confidence: 99%

Section: Ank-rf With E3 Ubiquitin Ligase Activitymentioning

confidence: 99%

Molecular insights into the function of ankyrin proteins in plants

Kim

Chandran

et al. 2015

J. Plant Biol.

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“…Arabidopsis XBAT and XBAT-related genes from other plant species are involved in development, re-production, ABA signaling, and biotic and abiotic stress tolerance (Nodzon et al, 2004;Huang et al, 2006;Stone et al, 2006;Wang et al, 2006;Xu et al, 2007;Yang et al, 2008). Loss of Arabidopsis XBAT32, for example, results in a delayed growth phenotype and reduced lateral root production due to a decrease in lateral root initiation (Nodzon et al, 2004).…”

Section: Aba Promotes Lateral Root Production In Xbat32mentioning

confidence: 99%

“…S1). Given the previous association detected between the XBAT-related genes and ABA signaling (Stone et al, 2006;Yang et al, 2008), xbat32, xbat34, and xbat35 seedlings were treated with ABA and its inhibitory effect on root growth was analyzed. Three-day-old seedlings were transferred to growth medium (GM) with or without ABA, and root development was analyzed after 5 d. Interestingly, from this analysis, we discovered that ABA promoted rather than inhibited xbat32 lateral root production ( Fig.…”

Section: Aba Promotes Lateral Root Production In Xbat32mentioning

confidence: 99%

Arabidopsis RING E3 Ligase XBAT32 Regulates Lateral Root Production through Its Role in Ethylene Biosynthesis

et al. 2010

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XBAT32, a member of the RING domain-containing ankyrin repeat subfamily of E3 ligases, was previously identified as a positive regulator of lateral root development. Arabidopsis (Arabidopsis thaliana) plants harboring a mutation in XBAT32 produce fewer lateral roots that wild-type plants. We found that xbat32 mutants produce significantly more ethylene than wild-type plants and that inhibition of ethylene biosynthesis or perception significantly increased xbat32 lateral root production. XBAT32 interacts with the ethylene biosynthesis enzymes AMINOCYCLOPROPANE-1-CARBOXYLIC ACID SYNTHASE4 (ACS4) and ACS7 in yeast-two-hybrid assays. XBAT32 is capable of catalyzing the attachment of ubiquitin to both ACS4 and ACS7 in in vitro ubiquitination assays. These results suggest that XBAT32 negatively regulates ethylene biosynthesis by modulating the abundance of ACS proteins. Loss of XBAT32 may promote the stabilization of ACSs and lead to increased ethylene synthesis and suppression of lateral root formation. XBAT32 may also contribute to the broader hormonal cross talk that influences lateral root development. While auxin treatments only partially rescue the lateral root defect of xbat32, they completely restore wild-type levels of xbat32 lateral root production when coupled with ethylene inhibition. Abscisic acid, an antagonist of ethylene synthesis/signaling, was also found to stimulate rather than inhibit xbat32 lateral root formation, and abscisic acid acts synergistically with auxin to promote xbat32 lateral root production.

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“…Of the RING ankyrin repeat proteins studied so far XBAT32 is the only member found to be involved in ethylene synthesis/ signaling. Other XBAT or XBAT-related proteins are involved in disease resistance, drought tolerance, flower senescence and fertilization [14][15][16][17] (Fig. 1).…”

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confidence: 99%

Further analysis of XBAT32, an Arabidopsis RING E3 ligase, involved in ethylene biosynthesis

Prasad

Stone

2010

Plant Signaling & Behavior

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The Arabidopsis RING E3 ligase, XBAT32, was previously characterized as a regulator of lateral root initiation. However, how XBAT32 function to modulate lateral root initiation was unknown. In our recent paper, we demonstrated that XBAT32 is involved in ethylene biosynthesis and it is through this function that XBAT32 is able to regulate lateral root production. Here we discuss a few other findings, observed in the ethylene overproducing mutant, xbat32, that reflect the effect of elevated ethylene levels on plant growth and development. Ethylene signaling also regulates plant responses to adverse environmental conditions such as high salinity. Consistent with ethylene's role as a stress hormone, xbat32 exhibited increased sensitivity to salt stress during seed germination and postgerminative growth. Thus, XBAT32 may also play a role in ethylene mediated response to abiotic stresses.Protein ubiquitination is an integral part of numerous cellular processes and is required for proper growth and development of all eukaryotic organisms. The ubiquitination pathway covalently attaches ubiquitin, a small regulatory peptide, to selected proteins. The fate of the ubiquitinated protein differs depending upon the number of attached ubiquitin molecules as well as polyubiquitin chain topology.1,2 Most notable is degradation of proteins modified by the attachment of a lysine 48 linked polyubiquitin chain by the 26S proteasome, a multi-catalytic protease. Ubiquitination is a multi-step reaction involving the sequential action of three enzymes, E1 (ubiquitin activating

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Molecular cloning and characterization of a gene encoding RING zinc finger ankyrin protein from drought-tolerant Artemisia desertorum

Cited by 30 publications

References 31 publications

Molecular insights into the function of ankyrin proteins in plants

Molecular insights into the function of ankyrin proteins in plants

Arabidopsis RING E3 Ligase XBAT32 Regulates Lateral Root Production through Its Role in Ethylene Biosynthesis

Further analysis of XBAT32, an Arabidopsis RING E3 ligase, involved in ethylene biosynthesis

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