scholarly journals Salt hypersensitive mutant 9, a nucleolar APUM23 protein, is essential for salt sensitivity in association with the ABA signaling pathway in Arabidopsis

2018 ◽  
Vol 18 (1) ◽  
Author(s):  
Kai-Chau Huang ◽  
Wei-Chih Lin ◽  
Wan-Hsing Cheng
Keyword(s):  
Signaling Pathway ◽  
Salt Sensitivity ◽  
Aba Signaling

scholarly journals The OsOXO2, OsOXO3 and OsOXO4 Positively Regulate Panicle Blast Resistance in Rice

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Jingfang Dong ◽  
Lian Zhou ◽  
Aiqing Feng ◽  
Shaohong Zhang ◽  
Hua Fu ◽  
...  
Keyword(s):  
Signaling Pathways ◽  
Signaling Pathway ◽  
Molecular Mechanisms ◽  
Blast Resistance ◽  
Aba Signaling ◽  
Leaf Blast ◽  
Expression Levels ◽  
Panicle Blast ◽  
Localization Analysis ◽  
Sa Signaling

Abstract Background Although panicle blast is more destructive to yield loss than leaf blast in rice, the cloned genes that function in panicle blast resistance are still very limited and the molecular mechanisms underlying panicle blast resistance remain largely unknown. Results In the present study, we have confirmed that the three Oxalate oxidase (OXO) genes, OsOXO2, OsOXO3 and OsOXO4 from a blast-resistant cultivar BC10 function in panicle blast resistance in rice. The expression of OsOXO2, OsOXO3 and OsOXO4 were induced by panicle blast inoculation. Subcellular localization analysis revealed that the three OXO proteins are all localized in the nucleus and cytoplasm. Simultaneous silencing of OsOXO2, OsOXO3 and OsOXO4 decreased rice resistance to panicle blast, whereas the OsOXO2, OsOXO3 and OsOXO4 overexpression rice plants individually showed enhanced panicle blast resistance. More H2O2 and higher expression levels of PR genes were observed in the overexpressing plants than in the control plants, while the silencing plants exhibited less H2O2 and lower expression levels of PR genes compared to the control plants. Moreover, phytohormone treatment and the phytohormone signaling related gene expression analysis showed that panicle blast resistance mediated by the three OXO genes was associated with the activation of JA and ABA signaling pathways but suppression of SA signaling pathway. Conclusion OsOXO2, OsOXO3 and OsOXO4 positively regulate panicle blast resistance in rice. The OXO genes could modulate the accumulation of H2O2 and expression levels of PR gene in plants. Moreover, the OXO genes mediated panicle blast resistance could be regulated by ABA, SA and JA, and may be associated with the activation of JA and ABA signaling pathways but suppression of the SA signaling pathway.

The tomato IQD gene SUN24 regulates seed germination through ABA signaling pathway

Planta ◽  
2018 ◽  
Vol 248 (4) ◽  
pp. 919-931 ◽  
Author(s):  
Lulu Bi ◽  
Lin Weng ◽  
Zhuyan Jiang ◽  
Han Xiao
Keyword(s):  
Seed Germination ◽  
Signaling Pathway ◽  
Aba Signaling

scholarly journals Involvement of CmWRKY10 in Drought Tolerance of Chrysanthemum through the ABA-Signaling Pathway

2016 ◽  
Vol 17 (5) ◽  
pp. 693 ◽  
Author(s):  
Muhammad Jaffar ◽  
Aiping Song ◽  
Muhammad Faheem ◽  
Sumei Chen ◽  
Jiafu Jiang ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Signaling Pathway ◽  
Aba Signaling

scholarly journals OsDET1 Modulates the ABA Signaling Pathway and ABA Biosynthesis in Rice

2016 ◽  
pp. pp.00059.2016
Author(s):  
Guangchao Zang ◽  
Hanyan Zou ◽  
Yuchan Zhang ◽  
Zheng Xiang ◽  
Junli Huang ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Aba Signaling ◽  
Aba Biosynthesis

scholarly journals Control of ABA Signaling and Crosstalk With Other Hormones by Selective Degradation of Pathway Components

2021 ◽  
Author(s):  
Agnieszka Sirko ◽  
Anna Wawrzyńska ◽  
Jerzy Brzywczy ◽  
Marzena Sieńko
Keyword(s):  
Abscisic Acid ◽  
Signaling Pathway ◽  
Plant Hormone ◽  
Aba Signaling ◽  
Degradation Mechanisms ◽  
E3 Ligases ◽  
Selective Autophagy ◽  
Selective Degradation ◽  
Different Parts

A rapid and appropriate genetic and metabolic acclimation, which is crucial for plants’ survival in a changing environment, is maintained due to the coordinated action of plant hormones and cellular degradation mechanisms influencing proteostasis. The plant hormone abscisic acid (ABA) rapidly accumulates in plants in response to environmental stress and plays a pivotal role in the reaction to various stimuli. Increasing evidence demonstrates a significant role of autophagy in controlling ABA signaling. This field has been extensively investigated and new discoveries are constantly being provided. We present updated information on the components of the ABA signaling pathway, particularly on transcription factors modified by different E3 ligases. Then, we focus on the role of selective autophagy in ABA pathway control and review novel evidence on the involvement of autophagy in different parts of the ABA signaling pathway that are important for crosstalk with other hormones, particularly cytokinins and brassinosteroids.

scholarly journals Downregulation of lncRNA PpL-T31511 and Pp-miRn182 Promotes Hydrogen Cyanamide-Induced Endodormancy Release through the PP2C-H2O2 Pathway in Pear (Pyrus pyrifolia)

2021 ◽  
Vol 22 (21) ◽  
pp. 11842
Author(s):  
Liang Li ◽  
Jinhang Liu ◽  
Qin Liang ◽  
Yu Feng ◽  
Chao Wang ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Inhibitory Effect ◽  
Signal Pathway ◽  
Pyrus Pyrifolia ◽  
Aba Signaling ◽  
Rna Seq ◽  
Effective Measure ◽  
Hydrogen Cyanamide ◽  
Complex Process ◽  
Pp2c Gene

Bud endodormancy is an important, complex process subject to both genetic and epigenetic control, the mechanism of which is still unclear. The endogenous hormone abscisic acid (ABA) and its signaling pathway play important roles in the endodormancy process, in which the type 2C protein phosphatases (PP2Cs) is key to the ABA signal pathway. Due to its excellent effect on endodormancy release, hydrogen cyanamide (HC) treatment is considered an effective measure to study the mechanism of endodormancy release. In this study, RNA-Seq analysis was conducted on endodormant floral buds of pear (Pyrus pyrifolia) with HC treatment, and the HC-induced PP2C gene PpPP2C1 was identified. Next, software prediction, expression tests and transient assays revealed that lncRNA PpL-T31511-derived Pp-miRn182 targets PpPP2C1. The expression analysis showed that HC treatment upregulated the expression of PpPP2C1 and downregulated the expression of PpL-T31511 and Pp-miRn182. Moreover, HC treatment inhibited the accumulation of ABA signaling pathway-related genes and hydrogen peroxide (H2O2). Furthermore, overexpression of Pp-miRn182 reduced the inhibitory effect of PpPP2C1 on the H2O2 content. In summary, our study suggests that downregulation of PpL-T31511-derived Pp-miRn182 promotes HC-induced endodormancy release in pear plants through the PP2C-H2O2 pathway.

scholarly journals VlbZIP30 of grapevine functions in drought tolerance via the abscisic acid core signaling pathway

2017 ◽  
Author(s):  
Mingxing Tu ◽  
Xianhang Wang ◽  
Yanxun Zhu ◽  
Dejun Wang ◽  
Xuechuan Zhang ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Drought Stress ◽  
Drought Tolerance ◽  
Signaling Pathway ◽  
Growth And Development ◽  
Transgenic Arabidopsis ◽  
Dehydration Stress ◽  
Aba Signaling ◽  
Group A ◽  
Cotyledon Greening

AbstractDrought stress limits the growth and development of grapevines, thereby reducing productivity, but the mechanisms by which grapevines respond to drought stress remain largely uncharacterized. Here, we characterized a group A bZIP gene from ‘Kyoho’ grapevine, VlbZIP30, which was shown to be induced by abscisic acid (ABA) and dehydration stress. Overexpression of VlbZIP30 in transgenic Arabidopsis enhanced dehydration tolerance during seed germination, and in the seedling and adult stages. Transcriptome analysis revealed that a major proportion of ABA- and/or drought-responsive genes are transcriptionally regulated by VlbZIP30 during ABA or mannitol treatment at the cotyledon greening stage. We identified an A. thaliana G-box motif (CACGTG) and a potential grapevine G-box motif (MCACGTGK) in the promoters of the 39 selected A. thaliana genes up-regulated in the transgenic plants and in the 35 grapevine homologs, respectively. Subsequently, using two grapevine-related databases, we found that 74% and 84% (a total of 27 genes) of the detected grapevine genes were significantly up-regulated by ABA and drought stress, respectively, suggesting that these 27 genes involve in ABA or dehydration stress and may be regulated by VlbZIP30 in grapevine. We propose that VlbZIP30 functions as a positive regulator of drought-responsive signaling in the ABA core signaling pathway.HighlightVlbZIP30 positively regulate plant drought tolerance through regulated the expression of 27 grapevine candidate genes via G-box cis-element (MCACGTGK) in ABA signaling pathway.

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