RETRACTED:
            <i>HOS10</i>
            encodes an R2R3-type MYB transcription factor essential for cold acclimation in plants

Zhu, Jianhua; Verslues, Paul E.; Zheng, Xianwu; Lee, Byeong-ha; Zhan, Xiangqiang; Manabe, Yuzuki; Sokolchik, Irina; Zhu, Yanmei; Dong, Chun-Hai; Zhu, Jian‐Kang; Hasegawa, Paul M.; Bressan, Ray A.

doi:10.1073/pnas.0503960102

Cited by 167 publications

(99 citation statements)

References 42 publications

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“…1a). Cold treatment, which does not induce a high level of ABA accumulation (Zhu et al 2005), produced the same induction of RD29A:-LUC as in wild-type (Fig. 1b).…”

Section: Resultsmentioning

confidence: 53%

Altered ABA, proline and hydrogen peroxide in an Arabidopsis glutamate:glyoxylate aminotransferase mutant

2007

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Plant responses to abiotic stress are determined both by the severity of the stress as well as the metabolic status of the plant. Abscisic acid (ABA) is a key component in integrating these various signals and controlling downstream stress responses. By screening for plants with decreased RD29A:LUC expression, we isolated two alleles, glutamate:glyoxylate transferase1-1 (ggt1-1) and ggt1-2, of a mutant with altered ABA sensitivity. In addition to reduced ABA induction of RD29A, ggt1-1 was altered in ABA and stress regulation of D 1 -pyrroline-5-carboxylate synthase, proline dehydrogenase and 9-cis-epoxycarotenoid dioxygenase 3, which encode enzymes involved in Pro and ABA metabolsim, respectively. ggt1-1 also had altered ABA and Pro contents after stress or ABA treatments while root growth and leaf water loss were relatively unaffected. A light-dependent increase in H 2 O 2 accumulation was observed in ggt1-1 consistent with the previously characterized role of GGT1 in photorespiration. Treatment with exogenous H 2 O 2 , as well as analysis of a mutant in nucleoside diphosphate kinase 2 which also had increased H 2 O 2 content but is not involved in photorespiration or amino acid metabolism, demonstrated that the greater ABA stimulation of Pro accumulation in these mutants was caused by altered H 2 O 2 content as opposed to other metabolic changes. The results suggest that metabolic changes that alter H 2 O 2 levels can affect both ABA accumulation and ABA sensitivity.

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“…1a). Cold treatment, which does not induce a high level of ABA accumulation (Zhu et al 2005), produced the same induction of RD29A:-LUC as in wild-type (Fig. 1b).…”

Section: Resultsmentioning

confidence: 53%

Altered ABA, proline and hydrogen peroxide in an Arabidopsis glutamate:glyoxylate aminotransferase mutant

2007

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“…Thus, it appears that TaCHP can act as a negative regulator of ABA biosynthesis, so that its down-regulation in response to salinity stress may partially account for the accumulation of ABA. Some MYB transcription factors are known to be required for ABA biosynthesis (Zhu et al, 2005), and the abundance of AtABA1 transcript was increased when AtMYB15 was overexpressed in nonstressed Arabidopsis seedlings (Ding et al, 2009). Here, the overexpression of TaCHP significantly reduced AtMYB15 transcription (Fig.…”

Section: Tachp Is Involved In An Aba-dependent Pathwaymentioning

confidence: 86%

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

Zhao

et al. 2010

Plant Physiology

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The plant response to abiotic stresses involves both abscisic acid (ABA)-dependent and ABA-independent signaling pathways. Here we describe TaCHP, a CHP-rich (for cysteine, histidine, and proline rich) zinc finger protein family gene extracted from bread wheat (Triticum aestivum), is differentially expressed during abiotic stress between the salinity-sensitive cultivar Jinan 177 and its tolerant somatic hybrid introgression cultivar Shanrong No.3. TaCHP expressed in the roots of seedlings at the three-leaf stage, and the transcript localized within the cells of the root tip cortex and meristem. TaCHP transcript abundance was higher in Shanrong No.3 than in Jinan 177, but was reduced by the imposition of salinity or drought stress, as well as by the exogenous supply of ABA. When JN17, a salinity hypersensitive wheat cultivar, was engineered to overexpress TaCHP, its performance in the face of salinity stress was improved, and the ectopic expression of TaCHP in Arabidopsis (Arabidopsis thaliana) also improved the ability of salt tolerance. The expression level of a number of stress reporter genes (AtCBF3, AtDREB2A, AtABI2, and AtABI1) was raised in the transgenic lines in the presence of salinity stress, while that of AtMYB15, AtABA2, and AtAAO3 was reduced in its absence. The presence in the upstream region of the TaCHP open reading frame of the cis-elements ABRE, MYBRS, and MYCRS suggests that it is a component of the ABA-dependent and -independent signaling pathways involved in the plant response to abiotic stress. We suggest that TaCHP enhances stress tolerance via the promotion of CBF3 and DREB2A expression.

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“…Reverse transcription and PCR (10 mL) were performed with 0.1 mg of total RNA using the One-Step RT-PCR kit (Qiagen). To quantify the copy number of each RNA, the C t (threshold cycle) value was compared with a standard curve generated using PCR products for each gene that had been purified and quantified by UV light absorbance (Zhu et al, 2005). Three biological and three technical replicates were performed for each experiment.…”

Section: Rt-pcr and Quantitative Pcr Analysis Of Gene Expressionmentioning

confidence: 99%

Identification of Two Protein Kinases Required for Abscisic Acid Regulation of Seed Germination, Root Growth, and Gene Expression in Arabidopsis

2007

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Abscisic acid (ABA) is an important phytohormone regulating various plant processes, including seed germination. Although phosphorylation has been suggested to be important, the protein kinases required for ABA signaling during seed germination and seedling growth remain elusive. Here, we show that two protein kinases, SNF1-RELATED PROTEIN KINASE2.2 (SnRK2.2) and SnRK2.3, control responses to ABA in seed germination, dormancy, and seedling growth in Arabidopsis thaliana. A snrk2.2 snrk2.3 double mutant, but not snrk2.2 or snrk2.3 single mutants, showed strong ABAinsensitive phenotypes in seed germination and root growth inhibition. Changes in seed dormancy and ABA-induced Pro accumulation consistent with ABA insensitivity were also observed. The snrk2.2 snrk2.3 double mutant had a greatly reduced level of a 42-kD kinase activity capable of phosphorylating peptides from ABF (for ABA Response Element Binding Factor) transcription factors. ABA-induced expression of several genes whose promoters contain an ABA response element (ABRE) was reduced in snrk2.2 snrk2.3, suggesting that the mechanism of SnRK2.2 and SnRK2.3 action in ABA signaling involves the activation of ABRE-driven gene expression through the phosphorylation of ABFs. Together, these results demonstrate that SnRK2.2 and SnRK2.3 are redundant but key protein kinases that mediate a major part of ABA signaling in Arabidopsis.

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RETRACTED: HOS10 encodes an R2R3-type MYB transcription factor essential for cold acclimation in plants

Cited by 167 publications

References 42 publications

Altered ABA, proline and hydrogen peroxide in an Arabidopsis glutamate:glyoxylate aminotransferase mutant

Altered ABA, proline and hydrogen peroxide in an Arabidopsis glutamate:glyoxylate aminotransferase mutant

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

Identification of Two Protein Kinases Required for Abscisic Acid Regulation of Seed Germination, Root Growth, and Gene Expression in Arabidopsis

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